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Accessories/Upgrades


Binoviewers Ala Carte
What is a Binoviewer Ala Carte?
Normally, Denkmeier Binoviewers are sold as part of a Package. Example;Standard Refractor Power x Switch Package, DII Newtonian Power x Switch Package, Big Easy Package etc. Our patent pending Optical Corrector Systems (OCS) are integrated directly into the Binoviewer in those packages. However, the latest Denkmeier innovation is the Power x Switch Star Diagonal, used for SCTs and Refractors. We now give you the choice of using a great 2" star diagonal with the corrector systems and Power x Switches fully integrated into the diagonals. This means that single eyepieces or binoviewers can be used with a variety of instant magnifications that these Power x Switch Star diagonals now provide. So if you are using an SCT or Refractor and want to become a Denk Binoviewer user, the latest option is to purchase one of our Power x Switch Star Diaognals like #S2, #R1 or #R2 and then add a Denk Binoviewer Ala Carte. See our Binoviewers Ala Carte tab in the far left column at anytime.

Some Information To Help In your Decision
In this section, we provide a Comparison Chart of the available Denkmeier Binoviewers. After reading what we have to say about The Standard vs The Denk II, you should be able to make an informed decision about which binoviewer to buy although it's not always easy to decide!

But I Own Several Telescopes!
Using More Than One Telescope?
                                
Please Select From Choices Below



Complete Product List


Denkmeier Eyepieces
Update: 03-31-06
The new D14s are shipping!  Price is $289 each. Customer comments have been great!!!

The Top-Rated Denkmeier Eyepieces
Our D21s and D14s have been designed specifically with binoviewing in mind. Over one year in the making, users are raving about the awesome contrast delived by way of our super efficient multi-coatings. We use only the finest Japanese raw glass for these and each optical set is carefully examined with loupes in our Maryland, USA facility and then assembled as a pair and finally tested in a Denkmeier Binoviewer before being shipped to the customer. Superb and accurate maching of all of the anodized aluminum housings mean perfect image merges everytime. The optional Vaults ($39 per pair) ....well, they certainly break new ground when it comes to protective storage of your cherished Denk Eyepieces. We consider them just about "Meteorite Proof". The 20mm eye relief and 65 degree field of view provide an amazing porthole-like effect. They are specially designed to provide maximum illumination with our Power x Switch Systems. (Photo Shows Optional Eyepiece Vaults)

Filter Switch Systems
                  Brand New for 2007..The Filter Switch
New! Just install your own 2" or 1.25" filters into The filter Switch and instant filter switching is at your fingertips! Protects your valuable filters at all times too. Add to any Denkmeier Binoviewer Power x Switch System, any Denkmeier Star Diagonal, or your own William Optics Star Diagonal. If you already own a Denkmeier Binoviewer or Power Switch Diagonal, not to worry.....The Filter Switch can be retro-fitted to anything made by Denkmeier! Available for cameras too. Shipping now! call 866-340-4578
Download Filter Switch Manual (PDF) Note: The "Back Button" may be used to return to this screen after the Manual is viewed.

H-a Use With A Denk Binoviewer
Use the following links for information and to place an order  for the optical components necessary to focus your Standard or Denk II Binoviewer when used on a refractor equipped with a Solarmax Filter or when using a Solarmax Telescope.  Our Bino-Corrector for The Personal Solar Telescope (P.S.T.) can also be ordered allowing a Denk Binoviewer to operate at two magnifications on the P.S.T. with a single pair of eyepieces.

Solarmax Filter Use and Solarmax Telescope Use

P.S.T. Use

Hydrogen Alpha
Viewing The Sun?
                                
Please Select From Choices Below

Hydrogen Alpha Use
How To Use Your Denk Binoviewer With H-a

World Class Solar observers (like Greg Piepol who took the image used for this link) are now viewing our nearest star in the narrow bandpass of H-a with Denk Binoviewers and D21 Eyepieces. Be sure to read this section and get ready to start viewing The Sun with both eyes! You won't be disappointed. For serious Solar observers, the Denk II's amazing contrast when used for H-a observation is gaining kudos from the most experienced H-a observers in the world.


Newtonians (and Mak-Newts)

By selecting this, you will be directed to information for all Denk Binoviewer Systems designed for use with Newtonians. Please note that other telescope designs that are also compatable are listed in parenthesis next to "Newtonians" in the link.  So, if you have a Mak-Newt, use this selection as well.

 


P.S.T." Personal Solar Telescope by Coronado
Psssst.....You can now use any Denkmeier Binoviewer with your P.S.T." for amazing two-eyed views of the Sun in H-a light. We produced this very versatile corrector with the same super-high quality specs as our other optical systems. Best of all, it operates at 1.5X and also 2.6X! Click on the picture for expanded information. Very economically priced too!

Power x Switch Diagonals

The Power x Switch Star Diagonals
Our patent pending 2" Power x Switch Star Diagonals are not just for Binoviewers!! Anyone with an SCT should run to buy one because every eyepiece in your case becomes three eyepieces, instantly! Never thread on a focal reducer again. Never pull an eyepiece out and dig for your 2X barlow again when higher power is called for. With a Denk Power x Switch Diagonal, focal reduction for beautiful wide vistas of deep space as well as normal and high power Lunar and Planetary views are seconds away. There is nothing to thread in or out, remove or fetch from an eyepiece case in the dark. It's all in the diagonal. Yes, Binocular viewers become amazingly versatile as well! Read about these diagonals in this section and have a look at the online Power x Switch Star Diagonal Manual also.


Refractors (Also The TAK FSQ 106, Classical Cassegrains, Tak Mewlons, TEC Maksutov Cassegrains, RCs)
By selecting this, you will be directed to information for all Denk Binoviewer packages designed for use with Refractors. Please note that other telescope designs that are also compatable are listed in parenthesis next to "Refractors" in the link. So, if you have a Mewlon, a Maksutov Cassegrain,  or Classical Cassegrain for example, use this selection.

Refractors/Newtonians (and Classical Cassegrains, Mewlons, TEC Maks, Mak-Mewts)

By selecting this, you will be directed to information for all Denk Binoviewer Systems designed for use with Refractors and Newtonians. Importantly, use this link only if you intend to use both telescope types with your Denk Binoviewer System. Please note that other telescope designs that are also compatable are listed in parenthesis next to "Refractors/Newtonians" in the link.  So, if you have a Newtonian or Mak-Newt and also a Mewlon or Classical Cassegrain for example, use this selection as well.

 


Refractors/SCTs (and Classical Cassegrains, Mak-Mewts, Maksutovs, Mewlons, TEC Maks)

By selecting this, you will be directed to information for all Denk Binoviewer Systems designed for use with Refractors and Schmidt Cassegrain Telescopes (SCTs). Importantly, use this link only if you intend to use both telescope types with your Denk Binoviewer System. Please note that other telescope designs that are also compatable are listed in parenthesis next to "Refractors/SCTs" in the link.  So, if you have a Mewlon or Classical Cassegrain for example in addition to an SCT or Maksutov, use this link as well.


Refractors/SCTs/Newtonians (and Classical Cassegrains, Maksutovs, Mewlons, TEC Maks, Mak-Newts)

By selecting this, you will be directed to information for all Denk Binoviewer Packages designed for use with Refractors, Newtonians and Schmidt Cassegrain Telescopes (SCTs). Importantly, use this link only if you intend to use all of these telescope types with your Denk Binoviewer System. Please note that other telescope designs that are also compatable are listed in parenthesis next to Refractors/Newtonians/SCTs" in the link. So, if you have a Mewlon or Classical Cassegrain for example in addition to a Newtonian and SCT, and Refractor, use this link as well.


SCT 2" Power-Switch
For any and all SCTs that are 8" or larger! This revolutionary 2" diagonal can eliminate the need to own more than one eyepiece! This patent pending diagonal is a must if you love to view the sky in widefield mode!!

SCTs (and Maksutov Cassegrains ex; ETX,Questar, Meade, Intes Micro)
By selecting this link, you will be directed to all Denk Binoviewer Systems that will allow operation with your Schmidt Cassegrain Telescope (SCT). Please note that other telescope designs that operate similarly with our Binoviewers are in parenthesis next to this SCT link. If you own one  of them, use this selection as well.

Special Deals!


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Products

#150 Cell For Coronado Blocking Filters
The #150 Cell For Coronado Blocking Filters
This 1.25" Cell is Fully Multi-Coated (FMC) and threads into the 1.25" Coronado Star Diagonals that contain either the 5mm, 10mm, or 15mm blocking filters. It attaches by way of male threads to the telescope-side filter threads on the coronado BF Diagonals. Read about the #150 Cell where we explain whether you need to add this optional cell or if you may already have a substitute cell already contained in your Binoviewer Package.

#R1 Power x Switch Diagonal
The #R1 2" Power x Switch Star Diagonal
Diagonal #R1 is made to allow multi-magnification of most binoviewers when used in Refractors. Just add any Denkmeier Binoviewer (purchased ala carte) and #R1 will allow the Denk Binoviewer to reach low, mid, and high magnifications with a single pair of eyepieces. Single eyepieces also have a multi-magnification function. This diagonal also includes our special 2" Low Power S Cell that threads directly into the telescope-side diagonal housing. This cell allows #R1's eyepiece-side Power x Switch to function when using a binoviewer. The Dovetail Connector is included and will allow the user to change the focusing range to suit a particular refractor when using a Denk Binoviewer. As with all of our Star Diagonals, this unit is available in 97% enhanced silver or 99% Dielectric Coatings (add $120). Remember to add an ala carte Denk Binoviewer!

#R1 Power x Switch Star Diagonal
The #R1 2" Power x Switch Star Diagonal
Diagonal #R1 is made to allow multi-magnification of most binoviewers when used in Refractors. Just add any Denkmeier Binoviewer (purchased ala carte) and #R1 will allow the Denk Binoviewer to reach low, mid, and high magnifications with a single pair of eyepieces. Single eyepieces also have a multi-magnification function. This diagonal also includes our special 2" Low Power S Cell that threads directly into the telescope-side diagonal housing. This cell allows #R1's eyepiece-side Power x Switch to function when using a binoviewer. The Dovetail Connector is included and will allow the user to change the focusing range to suit a particular refractor when using a Denk Binoviewer. As with all of our Star Diagonals, this unit is available in 97% enhanced silver or 99% Dielectric Coatings (add $120). Remember to add an ala carte Denk Binoviewer!

Tak FSQ 106
This R1 Power x Switch Star Diagonal is available in a special version for The Takahashi FSQ 106 Refractor. This version includes a special adapter that connects R1 to the Tak FS106 visual back. The Optical Adapter (included) contains a specifically designed optical element that allows R1 to reach focus with the Denk Binoviewer at three magnifcations with a single pair of eyepieces: 1.4X, 2.5X and 3.5X. The other Non-Optical Adapter (included) connects R1 to the Tak visual back and contains no optical element. This allows single 2" and 1.25" eyepieces to be used with the R1 Diagonal at 1X (normal power) and also allows a barlow effect by way of the multiplying optic in the Power x Switch. Note that the opposite Power x Switch Arm does not function when single eyepieces are being used and the non-optical adapter connects the R1 Power x Switch Diagonal to the Tak visual back.

Select: "R1 for FSQ" ($50 additional compared to #R1 for other refractors, and specify Dielectric ($120 additional) or Silver enhanced coatings. Pictorials will be available soon.

Add the Denk II Binoviewer in the "Binoviewer Ala Carte" section found in the left margin of all pages on this web site. Remember that for best illumination, our D21 Eyepieces are optimized for all Denk Binoviewer Systems and Diagonals and are made in USA and assemble and tested as matched eyepiece pairs. Performance is awesome, we guarantee it!

Note: You may choose  "Short Tube" diagonal or "Regular Tube" diagonal.  Why a Shorty? If you also plan on using an SCT that is smaller than 10", it is recommended that you choose the option of "Shorty Tube Diagonal"  and then add a "Shorty SCT Adapter" so that the #R1 Power x Switch Diagonal may be used with the SCT in addition to your Refractor. The Shorty Tube was designed to allow "swing-through clearance" for smaller SCTs so that the base of the fork mount is not contacted by the star diagonal bottom.

All #R1 Diagonals including the FSQ version, include the typical telescope-side tube that slips into any female 2" focuser. When the FSQ is used, this tube is removed and instead, the included FSQ Adapters are used to connect to the TAK106. However, FSQ owners may have other scopes and the diagonal is designed to convert to and operate as any 2" diagonal does should the need arise.

#R2 Power x Switch Star Diagonal
The #R2  Power x Switch Star Diagonal
This is one amazing diagonal. We designed this for refractors that can handle a little extra weight and it has two 2" format Power x Switch devices that produce a wonderful range of magnifications with any single eyepiece or a binoviewer. Our #R2 Power x Switch Star Diagonal allows a Denkmeier Standard or Premium Denk II Binoviewer as well as some other binoviewers to work at up to 6 magnifications with only one pair of eyepieces in most Refractors. Add a Standard or Premium Denk II Binoviewer purchased ala carte to your #R2 Power x Switch Star diagonal and typical Refractors will operate at up to 7 magnifications with a single eyepiece. Includes a silver enhanced 97% reflective 1/10 Wave mirror  Also available with a 99.4 %, 1/10 Wave Dielectric Mirror (add $120).

1.25" Part O/ Cell #150 For Coronado Filters
Parts O & The #150 1.25" Cell For Coronado Blocking Filters
This pair allows any Denk Binoviewer to reach focus at Low Power in Solarmax equipped scopes that use the Coronado 1.25" Blocking Filters (B5,B10 or B15). For Denk Binoviewers with no Power x Switch. The Part we call Part O is actually a 1.25" Nosepiece for Denk Binoviewers and contains an optical doublet that is Fully-Multi-Coated (FMC). The other 1.25" #150 Cell threads into the ffilter threads on the Telescope-Side of the BF filter diagonal. When used together, low 1.2X Magnification is the result. If the Hollow nosepiece for the Denk Binoviewer without the doublet is used in combination with the BF diagonal and #150 cell, 2.5X magnification results and an outward focus position is required.

1.25" Step Down Adpater
Using 1.25" Filters: $8 per 1.25" Step-Down Adapters. These may be ordered individually. Any 1.25" Step Down Adapter will fit into both Left and Right 2" Carriers. Order one for each 1.25" Filter. It is a good idea to have a 2" Carrier for each Step-Down Adapter so that the 1.25" Filter may remain loaded into the Step-Down Adapter and the Step-Down Adapter may remain loaded into the 2" Carrier, protected within the plastic case included with all 2" Carriers. In this way, either 1.25" Filters pre-loaded in such a way, or 2" Filters loaded in their designated 2" Carriers may be instantly inserted into the Main Filter Switch Housing. This takes seconds! Illustration shows the larger 2" Carrier with included hex tool engaged to secure the 1.25" Step-Down Carrier that has been loaded with a 1.25" Moon Filter. A separate drop-down window is provided for ordering plastic cases. Remember that all 2" Carrier Pairs ($20 per pair) include two plastic cases and that your 1.25" Step-Down Adapters do not include a plastic case. usually, the 1.25" Step-Down Adapters are stored within a 2" Filter Carrier and the plastic case that was included with that 2" Filter Carrier.

2" Filter Switch Carriers
Adding these optional 2" Filter Carrier Pairs allows you  to load all of your 2" Filters so that they are ready to insert into the Filter Switch Housing. These 2" Format Carriers accept typical 2" (48mm) filters. $20 includes one Pair of 2" Carriers and includes a plastic case for each carrier. Shipping is free when purchased with a Filter switch System. Otherwise, $5.50 priority shiopping in USA will be added to shopping cart total when these carriers are ordered after the Filter Switch System has been delivered previously. So, order at time of the Filter switch purchase to save on shipping!  Note that stacked filters such as variable polarizing filters are probably not suitable for use and may be to high in profile to fit. 

2" Filter Switch Star Diagonal
The new Filter Switch Star Diagonal. Collimated in our Ocean City Facility, this 2" Star Diagonal is available with a 97% Silver Enhanced, or 99% Dielectric Mirror. The 2" Filter Switch includes two 2" Filter Carriers. Order optional 1.25" Step-Down Filter Carriers or additional 2" Filter Carrier Pairs so that all of your filters are ready to load into the Filter Switch in seconds!

Adding Filter Switch to Newtonian and Universal Power X Switch Systems
This Filter Switch is an "add-on" for those who currently own a Denk II Newtonian or Universal Power x Switch System. Add a Filter Switch to your Denk II Newtonian Power x Switch System or your Denk II Universal Power x Switch System. Also available for Standard Newtonian Power x Switch Systems though an upgrade to the 2" Newtonian OCS Cell is required ($149). Blink Planetaries all night long. Works great!

Adding Filter Switch to SCT/Refractor Binoviewer Power Switch
This Filter switch is an "add-on" for those who currently own an SCT or Refractor Power x Switch System. This Filter Switch comes ready to dock to any Denk Binoviewer or Binoviewer with an SCT or Refractor Power x Switch. It will include a Special 2" Nosepiece that replaces your current Binoviewer 2" nosepiece. (For Newtonian or Universal Power x Switch Systems, choose "Filter Switch for Newtonian/Universal Systems). Add Filter Switching to your Power Switching for a completely great astronomical experience!

Bino-Corrector For P.S.T.
Use your Denkmeier Binoviewer in your P.S.T. Solar Telescope! Be sure to add some D21 Eyepieces, considered the ultimate for H-a viewing. Click on the Picture and use the link that is provided after to learn more about the Denkmeier P.S.T. Bino-Corrector!

Binoviewer Power x Switches
Binoviewer Power x Switches
The revolutionary Binoviewer Power x Switch is a patent pending Denkmeier Optical innovation that has changed the way people all over the world use their telescopes. During previous years of visiting star parties and speaking with amateur astronomers, we found that one of the key objections that they had to using binoviewers was that multiple pairs of eyepieces would have to be purchased. The Power x Switch not only eliminates this problem but makes observing objects at multiple magnifications a wonderful experience. In short, you'll do it! Without having to worry about stepping off of a ladder and loading other eyepieces into your unit, just push in a Power x Switch Arm, quickly re-focus and there it is: The Dumbell's central star. When you want to see it from a wider persepective, move a Power x Switch Arm to the "OUT" position. It's that easy and absolutely encourages you to examine each object at several magnifications. Add one today. If you have an existing Standard or Denk II Binoviewer without the Power x Switch System, it's easy to order and installs quickly with no tools. Our Power x Switch innovation is sold for Denkmeier Binoviewers only. We take our patents seriously and appreciate the fact that other astronomy manufacturers have cooperated in respecting our right to invent and then provide our unique designs to the community. Check out the information by clicking on the Power x Switch picture. We explain the differences in our Power x Switches and let you know what to order.

Complete Product List
This is a complete list of our Binoviewer Systems and other products. By clicking on the product, you will be brought to that item and can add it to your shopping cart.

D14 Matched Eyepieces
The D14 Eyepieces
One Matched Pair of the new, D14 Eyepieces from Denkmeier Optical.  Use in your Denk Binoviewer for awesome high contrast planetary, Lunar and Deepsky views of The Heavens. You deserve the best.

Note: An Aluminum Eyepiece Carrying case is free with the purchase of both D21, and D14 pairs. The case may be added as an option ($19) with the purchase of one pair of either the D21s or D14s. The eyepiece case or the binoviewer case are normally $29 each. Use the drop-down window to select the appropriate choice under the case option.




Deals OF The Month!!!
Check Out These Current Denk Deals!! Use The Code # When Placing Your Order With Us Here On The Website & You Will Automatically Get The Special Deal! In Your Shopping Cart Under The "Add Comments" Option, Just Place The Code # For The Special Deal And That Is How Your System Will Be Shipped! Free Upgrades Are a Good Thing! Click "More..." to See The Deals!

Denk II Premium Binoviewer With SCD Holders/Case
We tested the "real-world" performance of The Denk II in many telescope designs before going ahead with production of this Binoviewer. The prisms are polished to 1/8 wave surface accuracy and include special baffling to control off axis reflections. Super transmissive coatings formulated to provide maximum contrast throughout the visible spectrum are all features that are rolled into our Premium Denk II Binoviewer. SCD Holders and fully machined, and laser engraved aluminum eyepiece holder dust plugs are standard inclusions. Shipped in an aluminum case with die-cut foam padding. This is a finely tuned optical instrument worthy or being called our "Premium" Denk II Binoviewer.

Denk II Premium SCT Power x Switch Package
The Denk II Premium Power x Switch Package
The Premium Denk II Power x Switch Package has been used all around the world and makes any SCT amazingly versatile. The top-rated optical performance of our Denk II Prisms used in combination with our patent pending Power x Switch allows instant magnification changes. Never struggle with installing a focal reducer again! .66X, normal and 2X magnifications are instantly obtainable while viewing any and all objects! Our highest expression of quality is eveident. Add D21 Eyepieces for an amazing porthole-to-space effect!

Fillter Switch for Photography
This Filter Switch quickly docks to any camera using a T-ring. Whether using a conventional SLR like the Pentax K1000 pictured, or a new Digital SLR, this Filter switch gives you the ability to move filters in and out of the light path of your camera instantly. Add optional pairs of the 2" carriers or 1.25" Step-Down Adapters. Protects your filters from dew and dust!

Filter Switch For Existing Power x Switch Star Diagonal
This Filter Switch is installed on any existing Denkmeier Power x Switch Diagonal. We do the installation after you ship the diagonal to us. This is not a user-installed. Please follow the instructions for shipping the #S1,#S2, #R1, or #R2 Power x Switch Diagonals to us, outlined on the web page for this retro-fit.

Filter Switch For New Denk II Newtonian or Universal Power x Switch System
Ready to buy a brand new Denk II Newtonian or Universal Power x Switch System? Add a Filter Switch at time of purchase and save money. $189 includes the special Spacer Tubes and Dovetail Connector for Docking the Filter Switch to the Binoviewer's Dual Arm Power x Switch. Filter Switch and Power Switch the night away while exploring the Cosmos!

Filter Switch for New SCT/Refractor PXS System
Ready to buy a brand new Denk II SCT or Refractor Power x Switch System? Add a Filter Switch at the time of purchase for only $189 complete. Includes a Filter switch with a 2" Nosepiece and Connector for Docking to the Binoviewer's Power x Switch. Price includes shipping when added to a new Denk II SCT or Refractor Power x Switch System.

Filter Switch Retro-Fit to William Optics 2" Diagonals
Add a new Denkmeier Filter Switch to your 2" William Optics Star Diagonal. 1/2" Additional in-travel should be available with your refractor. Please check before sending us your star diagonal.

Newtonian Focal Reducer System
All information and a complete operating manual will appear in late March, 2008

One Matched Pair Of D21 Eyepieces
One Pair Of Matched D21 Eyepieces (IN-Stock: Ignore Out Of Stock Indication)
Includes plastic bolt cases and plastic lens covers. Always In-stock!

Note: An Aluminum Eyepiece Carrying case is free with the purchase of both D21, and D14 pairs. The case may be added as an option ($19) with the purchase of one pair of either the D21s or D14s. The eyepiece case or the binoviewer case are normally $29 each. Use the drop-down window to select the appropriate choice under the case option.


Power x Switch Diagonal #R1 (click here for details)
The #R1 2" Power x Switch Star Diagonal
Diagonal #R1 is made to allow multi-magnification of most binoviewers when used in Refractors. Just add any Denkmeier Binoviewer (purchased ala carte) and #R1 will allow the Denk Binoviewer to reach low, mid, and high magnifications with a single pair of eyepieces. Single eyepieces also have a multi-magnification function. This diagonal also includes our special 2" Low Power S Cell that threads directly into the telescope-side diagonal housing. This cell allows #R1's eyepiece-side Power x Switch to function when using a binoviewer. The Dovetail Connector is included and will allow the user to change the focusing range to suit a particular refractor when using a Denk Binoviewer. As with all of our Star Diagonals, this unit is available in 97% enhanced silver or 99% Dielectric Coatings (add $120). Remember to add an ala carte Denk Binoviewer!


Tak FSQ 106
This R1 Power x Switch Star Diagonal is available in a special version for The Takahashi FSQ 106 Refractor. This version includes a special adapter that connects R1 to the Tak FS106 visual back. The Optical Adapter (included) contains a specifically designed optical element that allows R1 to reach focus with the Denk Binoviewer at three magnifcations with a single pair of eyepieces: 1.4X, 2.5X and 3.5X. The other Non-Optical Adapter (included) connects R1 to the Tak visual back and contains no optical element. This allows single 2" and 1.25" eyepieces to be used with the R1 Diagonal at 1X (normal power) and also allows a barlow effect by way of the multiplying optic in the Power x Switch. Note that the opposite Power x Switch Arm does not function when single eyepieces are being used and the non-optical adapter connects the R1 Power x Switch Diagonal to the Tak visual back.

Select: "R1 for FSQ" ($50 additional compared to #R1 for other refractors, and specify Dielectric ($120 additional) or Silver enhanced coatings. Pictorials will be available soon.

Add the Denk II Binoviewer in the "Binoviewer Ala Carte" section found in the left margin of all pages on this web site. Remember that for best illumination, our D21 Eyepieces are optimized for all Denk Binoviewer Systems and Diagonals and are made in USA and assemble and tested as matched eyepiece pairs. Performance is awesome, we guarantee it!

Note: You may choose  "Short Tube" diagonal or "Regular Tube" diagonal.  Why a Shorty? If you also plan on using an SCT that is smaller than 10", it is recommended that you choose the option of "Shorty Tube Diagonal"  and then add a "Shorty SCT Adapter" so that the #R1 Power x Switch Diagonal may be used with the SCT in addition to your Refractor. The Shorty Tube was designed to allow "swing-through clearance" for smaller SCTs so that the base of the fork mount is not contacted by the star diagonal bottom.

All #R1 Diagonals including the FSQ version, include the typical telescope-side tube that slips into any female 2" focuser. When the FSQ is used, this tube is removed and instead, the included FSQ Adapters are used to connect to the TAK106. However, FSQ owners may have other scopes and the diagonal is designed to convert to and operate as any 2" diagonal does should the need arise.

Power x Switch Diagonal #R2 (click here for details)
The #R2  Power x Switch Star Diagonal
This is one amazing diagonal. We designed this for refractors that can handle a little extra weight and it has two 2" format Power x Switch devices that produce a wonderful range of magnifications with any single eyepiece or a binoviewer. Our #R2 Power x Switch Star Diagonal allows a Denkmeier Standard or Premium Denk II Binoviewer as well as some other binoviewers to work at up to 6 magnifications with only one pair of eyepieces in most Refractors. Add a Standard or Premium Denk II Binoviewer purchased ala carte to your #R2 Power x Switch Star diagonal and typical Refractors will operate at up to 7 magnifications with a single eyepiece. Includes a silver enhanced 97% reflective 1/10 Wave mirror  Also available with a 99.4 %, 1/10 Wave Dielectric Mirror (add $120).

Power x Switch Diagonal #S1 (click here for details)
Star Diagonal #S1 
Use this with your SCT if plan on doing single eyepiece observations only (non-binoviewer)

Why will every SCT user own one of these soon? This very important Denkmeier innovation allows an owner of an F/10 SCT to have a focal reducer and Barlow incorporated into a top quality 2" Star Diagonal. This means that 3 instant magnifcations with a single eyepiece is at your fingertips. A Denkmeier D21 65 degree Widefield  eyepiece suddenly becomes a 45mm 65 degree widefield eyepiece. Move the reducer arm to "OUT" and it reverts back to a 21mm eyepiece. Move the opposite Power x Switch Arm to the "IN" position and it becomes a 10.5mm eyepiece. The 65 degree apparant field is maintained in all Power Switch settings. In a few years, these diagonals will be standad equipment with all F/10 SCTs. Includes the 2" Power x Switch Diagonal #S1, 2"/1.25" eyepiece adapter, thread-on SCT visual back which fits all SCTs from 8"-16" in diameter. Comes with an engraved aluminum eyepiece holder plug and a 2" machined aluminum sealing cap for the telescope side diagonal tube.

Power x Switch Diagonal #S2 (click here for details)
Power x Switch Star Diagonal #S2
Use this for both binoviewing and single eyepiece viewing in your SCT (The #S2 is optimized for Binoviewing but works with single eyepieces as well. An extension is required if single eyepieces are to achieve the amount of focal reduction produced with #S1)
For SCTs Using Binoviewers All Power x Switch Star Diagonals are Patent Pending. #S2 is designed for use with binoviewers in an SCT and will operate with single eyepieces as well. The wonderful ability to call upon focal reduction, normal and 2X magnifications at any time instantly is yours. The new  #S2 Power x Switch Star Diagonal allows 3 magnifications with your binoviewer and three magnifications with any single eyepiece. Buy an ala carte Standard or Denk II Binoviewer and you will not only have a Binoviewing System that operates at three magnifications, but your single eyepieces will operate at three magnifications as well. Available with a Silver Enhanced 97% reflective mirror or a Dielectric 99% reflective mirror (add $120).

Power x Switch Installed On Your W-O Diagonal
You already own a William Optics Star Diagonal? Well, why not turn that diagonal into a Power switching Diagonal? Now you can elevate your experiences under the stars to a whole new level. Did you know that unlike most other telescope designs, your SCT can operate at reduction, normal and multiplication factors with our Power x Switch System? This means that each eyepiece can work at .5X/1X/2X instantly. You can view every object at these magnification factors with our patent pending Power x Switch. So, if you currently use a William Optics Star Diagonal, we can install the Power x Switch on that diagonal and you can begin enjoying amazing views at 3 different magnifications with a single eyepiece. We'll tell you just what you need to do and for only $249+Shipping, your observing  will be transformed and brought to a whole new level of enjoyment. Click on "More" for details.

Power x Switch Star Diagonal #S2
Power x Switch Star Diagonal #S2
For SCTs Using Binoviewers All Power x Switch Star Diagonals are Patent Pending. #S2 is designed for use with binoviewers in an SCT and will operate with single eyepieces as well. The wonderful ability to call upon focal reduction, normal and 2X magnifications at any time instantly is yours. The new  #S2 Power x Switch Star Diagonal allows 3 magnifications with your binoviewer and three magnifications with any single eyepiece. Buy an ala carte Standard or Denk II Binoviewer and you will not only have a Binoviewing System that operates at three magnifications, but your single eyepieces will operate at three magnifications as well. Available with a Silver Enhanced 97% reflective mirror or a Dielectric 99% reflective mirror (add $120).

Premium Denk II Refractor Power x Switch Package

The Denk II Premium Refractor Power x Switch Package
Multi-Magnification, impeccable quality, color-free images. This system is being used in the world's finest refractors so if you want world class performance and would like to view through your Refractor with both eyes simultaneously, look no further. This Package includes a Premium Denk II Binoviewer with 2 SCD Holders, a Dual Arm Power x Switch, 2" Part SR for Everbright and Maxbright Star Diagonals or a 2" Low Power S Cell for Denkmeier, WO and most other 2" star diagonals, and a locking Denkmeier Aluminum Case. Operates at three magnifications of 1.4X, 2.25X and 3.5X. In-Stock.


Premium Denk II Universal Power x Switch Package
The Premium Denk II Universal Power x Switch Package
This is our top of the line Denk Binoviewer System for use in all of your telescopes. The Denk II Binoviewer comes with a Dual Arm Power x Switch allowing three instant magnifications in Newtonians.  Refractors and SCTS also obtain three magnifcations with the Universal Power x Switch and the included Optical Corrector System (OCS). For those who want the capability of Power x Switching with a Denk Binoviewer in all three telescope designs, this package is a very good choice.

Premium Denk II Universal Power x Switch Package


Premium Denk II Universal Power x Switch Package
The Premium Denk II Universal Power x Switch Package
This is our top of the line Denk Binoviewer System for use in all of your telescopes. The Denk II Binoviewer comes with a Dual Arm Power x Switch allowing three instant magnifications in Newtonians.  Refractors and SCTS also obtain three magnifcations with the Universal Power x Switch and the included Optical Corrector System (OCS). For those who want the capability of Power x Switching with a Denk Binoviewer in all three telescope designs, this package is a very good choice. If you currently own a Refractor and SCT and do not plan on adding a Newtonian to your collection, stck with a different System in this section. But if you plan on adding a Newtonian to your aresenal of observing equipment, this Package would be a good choice.

Select Optional Filter Carriers Below


Standard Binoviewer With SCD Holders/Case
Setting A New Standard
It's true. An historic review called "Binoviewer Shootout In The Desert" by Jim Gutman assembled 9 observers for a long night of side by side comparisons involving 5 binoviewers. We hadn't produced the Denk II at that time but suffice to say, The Standard came out very well.  After the review, several improvements were made to our Standard binoviewer. It now includes our special SCD Holders and the old Delrin slip-in holders while effective, were phased out long ago. Read more about the Denk Standard here by clicking on the photo! This version includes SCD holders and a Denk Aluminum Case.

Standard Universal Power x Switch Package
The Standard Universal Power x Switch Package
This extremely versatile system includes a Standard Denk Binoviewer with 2 SCD Holders, the Universal Single Arm Power x Switch, a 1.25" Optical Corrector System (OCS) that morphs into all corrector configurations necessary for reaching focus at multiple instant magnifications on Newtonians, Refractors and SCTs, and comes shipped in our Denkmeier locking aluminum case.

Star*Sweepers & Multipliers
Note: The 2" SCT Star*Sweeper is the cell used in the Cloudy Nights article featuring the Collins I3 image intensifying eyepiece. The price is $149 + Shipping.

All of our optical components are custom ground and coated by our engineers to the highest specifications. These components feature Multi-Coatings on every air to glass surface (FMC) and high precision surface accuracy. All optical elements are housed in our anodized engraved cells. They are available in 1.25" or 2" format. These Denkmeier Components are suitable for single eyepiece usage or with your Denkmeier Binoviewer Systems. All of our cells are threaded to recieve filters in their corresponding format. All Multipliers & Star*Sweepers include machined caps. Click on the image for more details!

The #R2 Power x Switch Star Diagonal
The #R2 Power x Switch Star Diagonal
This is one amazing diagonal. We designed this for Refractors that can handle a little extra weight and it has two 2" format Power x Switch devices that produce a wonderful range of magnifications with any single eyepiece or a binoviewer. It will also operate with SCTs so owners of both scopes might consider this purchase. Our #R2 Power x Switch Star Diagonal allows a Denkmeier Standard or Premium Denk II Binoviewer as well as many other binoviewers to work at up to 6 magnifications with only one pair of eyepieces in most Refractors. Add a Standard or Premium Denk II Binoviewer purchased ala carte to your #R2 Power x Switch Star diagonal and typical Refractors will operate at up to 7 magnifications with a single eyepiece. Includes a silver enhanced 97% reflective 1/10 Wave mirror  Also available with a 99.4 %, 1/10 Wave Dielectric Mirror (add $120).

THE BIG EASY

Why Do We Call It The Big Easy?
Because our famous Standard Denk Binoviewer included in this Package has a BIG 26mm clear aperture but the price of this super economy package is EASY to afford. This system is also easy to use because a correcting system that allows focus in several magnifcations with Refractors, Newtonians and SCTs is also included. You'll never have a problem bringing focus to a pair of eyepieces and they will operate at two magnifications in any Refractor or Newtonian and three magnifications in an F/10 SCT including a focal reduction mode.  Click on the photo, read all about it.


The BIG EASY
Why Do We Call It The Big Easy? Note: Now Includes SCD Diopter Eyepiece Holders

Because our famous Standard Denk Binoviewer included in this Package has a BIG 26mm clear aperture but the price of this super economy package is EASY to afford. This system is also easy to use because a correcting system that allows focus in several magnifcations with Refractors, Newtonians and SCTs is also included. You'll never have a problem bringing focus to a pair of eyepieces and they will operate at two magnifications in any Refractor or Newtonian and three magnifications in an F/10 SCT including a focal reduction mode.  Click on the photo, read all about it.


THE BIG EASY
Why Do We Call It The Big Easy?
Because our famous Standard Denk Binoviewer included in this Package has a BIG 26mm clear aperture but the price of this super economy package is EASY to afford. This system is also easy to use because a correcting system that allows focus in several magnifcations with Refractors, Newtonians and SCTs is also included. You'll never have a problem bringing focus to a pair of eyepieces and they will operate at two magnifications in any Refractor or Newtonian and three magnifications in an F/10 SCT including a focal reduction mode.  Click on the photo, read all about it.

THE BIG EASY

Why Do We Call It The Big Easy?
Because our famous Standard Denk Binoviewer included in this Package has a BIG 26mm clear aperture but the price of this super economy package is EASY to afford. This system is also easy to use because a correcting system that allows focus in several magnifcations with Refractors, Newtonians and SCTs is also included. You'll never have a problem bringing focus to a pair of eyepieces and they will operate at two magnifications in any Refractor or Newtonian and three magnifications in an F/10 SCT including a focal reduction mode.  Click on the photo, read all about it.


THE BIG EASY
Why Do We Call It The Big Easy?

Because our famous Standard Denk Binoviewer included in this Package has a BIG 26mm clear aperture but the price of this super economy package is EASY to afford. This system is also easy to use because a correcting system that allows focus in several magnifcations with Refractors, Newtonians and SCTs is also included. You'll never have a problem bringing focus to a pair of eyepieces and they will operate at two magnifications in any Refractor or Newtonian and three magnifications in an F/10 SCT including a focal reduction mode.  Click on the photo, read all about it.


The Big Easy Package
Now Includes SDC Diopter Eyepiece Holders

Why Do We Call It The Big Easy?
Because our famous Standard Denk Binoviewer included in this Package has a BIG 26mm clear aperture but the price of this super economy package is EASY to afford. This system is also easy to use because a correcting system that allows focus in several magnifcations with Refractors, Newtonians and SCTs is also included. You'll never have a problem bringing focus to a pair of eyepieces and they will operate at two magnifications in any Refractor or Newtonian and three magnifications in an F/10 SCT including a focal reduction mode.  Click on the photo, read all about it.

The P.S.T." Bino-Corrector
The New P.S.T." Bino-Corrector
Add our new fully multi-coated corrector to any Denkmeier Binoviewer for 1.5X and 2.6X magnifications. Explore our star with both eyes during your lunch-hour using the P.S.T. and
your Denk Binoviewer. In-stock. Super machining and well baffled throughout.

The Premium Denk II Newtonian Power x Switch Package
The Denk II Newtonian Power x Switch Package
With instant multiple magnifcation capabilities, coma correction and our patent pending giant 2" format Optical Corrector System (OCS), this top of the line system is creating quite a stir throughout the dobsonian-user community. This Package includes a Premium Denk II Binoviewer with 2 SCD Holders, a Dual Arm Power x Switch, a 2" Newtonian OCS, and a locking Denkmeier aluminum case.

The Premium Denk II Refractor Power x Switch Package
The Denk II Premium Refractor Power x Switch Package
Multi-Magnification, impeccable quality, color-free images. This system is being used in the world's finest refractors so if you want world class performance and would like to view through your Refractor with both eyes simultaneously, look no further. This Package includes a Premium Denk II Binoviewer with 2 SCD Holders, a Dual Arm Power x Switch, 2" Part SR for Everbright and Maxbright Star Diagonals or a 2" Low Power S Cell for Denkmeier, WO and most other 2" star diagonals, and a locking Denkmeier Aluminum Case. Operates at three magnifications of 1.4X, 2.25X and 3.5X. In-Stock.

The Premium Denk II Universal Power x Switch Package
The Premium Denk II Universal Power x Switch Package
This is our top of the line Denk Binoviewer System for use in all of your telescopes. The Denk II Binoviewer comes with a Dual Arm Power x Switch allowing three instant magnifications in Newtonians.  Refractors and SCTS also obtain three magnifcations with the Universal Power x Switch and the included Optical Corrector System (OCS). For those who want the capability of Power x Switching with a denk Binoviewer in all three telescope designs, this package is a very good choice.

The Premium Denk II Universal Power x Switch Package

The Premium Denk II Universal Power x Switch Package
This is our top of the line Denk Binoviewer System for use in all of your telescopes. The Denk II Binoviewer comes with a Dual Arm Power x Switch allowing three instant magnifications in Newtonians.  Refractors and SCTS also obtain three magnifcations with the Universal Power x Switch and the included Optical Corrector System (OCS). For those who want the capability of Power x Switching with a Denk Binoviewer in all three telescope designs, this package is a very good choice. If you currently own the telescope that was selected bring you here but you plan on adding other scope designs to your aresenal of observing equipment, this may be a good choice.

 


The Standard Newtonian Power x Switch Package

The Standard Newtonian Power x Switch  Package
Enjoy the amazing Power x Switch system at an affordable price. This Package includes a Standard Denkmeier Binoviewer with 2 SCD Holders, a Single Arm Power x Switch, a 1.25" Newtonian OCS, and a locking Denkmeier aluminum case. Operates at 1.25X and 2.5X. Change between these magnifications instantly without removing the eyepieces or unscrewing anything. Once you try it, you will use two magnifications to view everything, we promise!


The Standard Refractor Power x Switch Package
The Standard Refractor Power x Switch Package
A big bang for the buck. This includes the patent pending Power x Switch that allows instant magnification change. We made our reputation for quality products based on our Standard Binoviewer performance. The Power x Switch makes it all that much better. This Package includes a Standard Denkmeier Binoviewer with 2 SCD Holders, a single arm Power x Switch, a 1.25 OCS Cell #150, part T allowing use in a 2 star diagonal that has 2" (48mm) filter threads on telescope side, and a locking Denkmeier aluminum case. Operates at 1.4X and 2.5X. In-Stock.

The Standard Refractor Power x Switch Package

The Standard Refractor Power x Switch Package
A big bang for the buck. This includes the patent pending Power x Switch that allows instant magnification change. We made our reputation for quality products based on our Standard Binoviewer performance. The Power x Switch makes it all that much better. This Package includes a Standard Denkmeier Binoviewer with 2 SCD Holders, a single arm Power x Switch, a 1.25 OCS Cell #150, part T allowing use in a 2 star diagonal that has 2" (48mm) filter threads on telescope side, and a locking Denkmeier aluminum case. Operates at 1.4X and 2.5X. In-Stock.


The Standard SCT Power x Switch Package
The Standard SCT Power x Switch Package
Extremely versatile turning your SCT into a giant binocular! This Package includes a Standard Denkmeier Binoviewer with 2 SCD Holders, a Single Arm Power x Switch for instant switching between normal and focal reduction modes, a 1.25"  thread-on 2X Multiplier Cell for highest powers, and a locking Denkmeier aluminum case. Operates at .66X reduction, 1.15X, and 2X.  In-Stock.  A real  revelation for those with F/10 SCTs.


The Standard Universal Power x Switch Package
The Standard Universal Power x Switch Package
This extremely versatile system includes a Standard Denk Binoviewer with 2 SCD Holders, the Universal Single Arm Power x Switch, a 1.25" Optical Corrector System (OCS) that morphs into all corrector configurations necessary for reaching focus at multiple instant magnifications on Newtonians, Refractors and SCTs, and comes shipped in our Denkmeier locking aluminum case.

The Standard Universal Power x Switch Package

The Standard Universal Power x Switch Package
This extremely versatile system includes a Standard Denk Binoviewer with 2 SCD Holders, the Universal Single Arm Power x Switch, a 1.25" Optical Corrector System (OCS) that morphs into all corrector configurations necessary for reaching focus at multiple instant magnifications on Newtonians, Refractors and SCTs, and comes shipped in our Denkmeier locking aluminum case. If you only own the telescope that was selected in our Shopping Guide but plan on adding other scopes, consider this package.

 


The Standard Universal Power x Switch Package

The Standard Universal Power x Switch Package
This extremely versatile system includes a Standard Denk Binoviewer with 2 SCD Holders, the Universal Single Arm Power x Switch, a 1.25" Optical Corrector System (OCS) that morphs into all corrector configurations necessary for reaching focus at multiple instant magnifications on Newtonians, Refractors and SCTs, and comes shipped in our Denkmeier locking aluminum case. If you only own the telescope that was selected in our Shopping Guide but plan on adding other scopes, consider this package.


The Standard Universal Power x Switch Package

The Standard Universal Power x Switch Package
This extremely versatile system includes a Standard Denk Binoviewer with 2 SCD Holders, the Universal Single Arm Power x Switch, a 1.25" Optical Corrector System (OCS) that morphs into all corrector configurations necessary for reaching focus at multiple instant magnifications on Newtonians, Refractors and SCTs, and comes shipped in our Denkmeier locking aluminum case. If you only own one of the telescopes that was selected in our Shopping Guide to bring you here but plan on adding another scope like a Newtonian, consider this package.



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