Filter Switch Systems
Buying a Brand New Denk II Newtonian or Universal Power x Switch System? Add a Filter Switch now and save money. Only $249. See the product at the very bottom of this page and add it to your Newly Purchased Denk II Newtonian or Universal Power x Switch System order.
Filter Switch for Camera T-Ring: $249. Includes Filter Switch and Camera Adapter (See online Filter Switch Manual)Move filters in or out of your camera's light path. Filters are fully protected. Load in your 2" or 1.25" filters. Additional 2" Carrier Pairs are $36, 1.25" optional adapters for using 1.25" filters are $12 each and may be ordered singly.
Ordering Optional 2" Carrier Pairs: $36 per pair includes a Right and Left 2" Carrier. each Carrier is enclosed in its own plastic square case. The Case will protect your 2" Filters after they are loaded into the carrier. Open the plastic case, load the Carrier into the Filter Switch and you are ready to go. Go to "Shopping Cart Page 2" at bottom of this web page.
Using 1.25" Filters: $12 per 1.25" Step-Down Adapters. These may be ordered singly. They can fit into both Left and Right 2" Carriers. Order one for each 1.25" Filter. It is a good idea to order 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. Go to "Shopping Cart Page 2" at bottom of this web page.
First User Comments
"The scope I tested the Filter Switch on is a Nightsky 18 F4.2 Dobsonian. I use a Feathertouch 2 focuser and the new replacement tubes fit perfectly in the focuser. All pieces connected smoothly to the original Denk II System. I used two sets of lenses (eyepieces) for the test. A Pair of 19mm eyepieces and a pair of 8x24 click stop zooms with powers of 24,16,12 and 8. This provided a total range, using the Denk II Power x Switch, of 112x through 600x. I had no problems reaching focus throughout the range mentioned utilizing the above mentioned lense combos. I ran the lenses through the entire range of the Denkmeier Power x Switch as well as all of the zoom powers available and had plenty of focus travel both in and out throughout. I did not have to extend the spacer tube with the slip ring as focus was reached with all pieces tightened completely.
I used both 2 and 1 ¼ filters and they fit perfectly in the respective holders. The left/right holders fit into the filter switch perfectly as well and the motion to move them in and out of the FOV is smooth and effortless. In conclusion, I have thought about adding a filter switching system to the scope's focuser but I really like the idea of an all in one bino-viewer system even more, especially since is is portable and the entire system can be moved to various scopes I own. I added some counterweights to the back of the mirror box to compensate for the additional weight of the filter switch and incurred no balance problems once that was done, even when the scope was pointing to objects low in the sky. Thanks Denkmeier for another great observing tool to compliment the best bino-viewing system out there." -Michael Cefola.
"The filter swtich is quite amazing! You've solved, for me, the biggest pain with using a binoviewer to observe. Pulling out the whole unit just to thread on a UHC filter was a real pain, especially when after finally locating the object, I loose alignment because of the removing/replacing the bino. Thanks!" - Jeremy Davis
FAQs Detailed operating instructions with illustrations can be found in The Filter Switch Manual in PDF Format here. This section may help answer some basic questions.
Q:Can I add the Filter Switch to any WO diaognal?
A: No. It appears that the Quartz Mirror versions cannot accpet our parts. Any other 2" WO Diaognal seems fine.
Q: I have an existing Power Switch Star Diagonal. Do I have to send it to Denkmeier Optical for retro-fitting of the Filter switch?
A: No! We can now set you up with an easy to install Kit.
Buy a Filter Switch Kit that will be user installed on your WO Diagonal for $249 + Shipping.
Q: I have a Power x Switch on my Denk Binoviewer. Can I install the Filter Switch myself?
A: Yes. This is a very different procedure and no tools are involved. The Binoviewer nosepiece is removed from the binoviewer Power x Switch, The Dovetail Adapter is then threaded into the Power x Switch, and then the Filter Switch is Docked to the Dovetail Connector using two thumbscrews. The Filter Switch includes a new special 2" nosepiece that threads to the telescope-side of the Filter Switch. The same installation procedure will apply to all Denk Binoviewers without Power x Switches. The Filter Switch will dock to the Dovetail Connector and can be oriented at any angle and locked into place.
Q: I have a Newtonian or Universal Power x Switch System. Is there are there different parts needed when adding a Filter Switch?
A: Yes. The Filter Switch System includes replacement spacer tubes for the 2" Newtonian Power x Switch System. Price is $249. In other words, the series of tubes that currently thread into your Power x Switch on the Binoviewer when used with your Newtonian Telescope must be replaced. When a Filter Switch is ordered for a Denk Newtonian or Universal Power x Switch System, new 2" format tubes will be included so that the system will focus correctly and retain the necessary spacing required for optimal performance. This can easily be user-installed. See the online Filter Switch Manual for more specific details and illustrations.
Q: Will additional in-travel be required on my Newtonian Focuser when adding a Filter Switch to my current Newtonian or Universal Power x Switch System?
A: No. In fact, 1/8" less in-travel will be required. Example: You currently have .25" of remaining in-travel of your focuser tube when using the Denk II Binoviewer with the Low-Power Arm of the binoviewer 's Power Switch being used. After adding the new Filter Switch with the supplied new replacement Spacer Tubes, there will be .5" remaining in-travel. That's a gain of 1/4" back focus. Magnification will not change.
Q: I own a Standard Newtonian or Universal Power x Switch System that is 1.25" format. Will the Filter Switch retro-fit to my Denk Binoviewer?
A: Yes. However, the Filter Switch is designed for use with 2" OCS format systems used on Newtonians. You must replace your 1.25" Newtonian or Universal OCS System (the 1.25" hollow tubes and the 1.25" front cell engraved with the letter "S"). Pricing for a 2" OCS optical cell to be used with your single arm Power x Switch is $149 additonal when purchasing the Filter Switch System for Newtonians. The required 2" format Spacing tubes and Dovetail Connector are already included with the Newtonian Filter Switch System. A 2" focuser on your Newtonian telescope is required.
Q: I have 1.25" and 2" Filters. Can I use them all with the Filter switch?
A: Yes. You must order 1.25" optional step-down adapters at $12 each.
Q: Should extra 2" Carriers and extra 1.25" step-down filter adapters be ordered?
A: The purpose of the Filter Switch is to make using all of your filters easy, convenient, and fun to use while offering protection as well. It is a good idea to load all of your 1.25" and 2" Filters into the carriers so that they may be loaded into the Filter Switch quickly and easily rather than removing filters from the same Carrier and replacing them with other filters. Someone who owns two 1.25" Filters and two 2" filters would ideally order two 1.25" Step-Down Carriers and two additional 2" Carriers to hold the 1.25" Dtep-Down Carriers. Two 2" carriers are always included with the Filter Switch. In this way, the 1.25" Filters would be kept in the plastic cases included with the two optional 2" Carriers and those 2" optional Carriers would already be loaded with the 1.25" Step-Down Carriers that contain the user's 1.25" Filters. The exchanging of Carriers into and out of the Filter Switch Housing only takes seconds. With the proper Carriers ordered, only the removal and introduction of the 2" Carriers into and out of the Filter Switch would be required.
Q: Will I need additional in-travel if I am using a refractor and add a Filter Switch Star Diagonal or have my William Optics 2" Star Diagonal converted? And If I use an SCT, will the Filter Switch add enough profile to cause base clearance problems or focus problems?
A: There is additional in-travel that is required when using refractors. Your eyepieces should reach focus with a typical 2" star diagonal and have .75" remaining in-travel or focus might not be achievable when adding a Filter Switch Diagonal or having your William Optics Diagonal retro-fitted with a Filter Switch. It is advisable to check this situation before making a decision because if there is less than .5" in-travel remaining with certain eyepieces, those same eyepieces will likely not reach focus after a Filter Switch is added. SCTs will not be effected by base clearance issues when adding a Filter Switch Diagonal because the filter Switch is installed on the eyepiece-side of the Star Diagonal. In SCTs, focus issues are not significantly effected by the additional thickness of the Filter Switch unless there is no additional counter-clockwise motion of the SCT focuser knob remaining. This is not a bad thing to check and be sure of, especially for those using a Denkmeier Power x Switch Star Diagonal in "reduction-mode". In such a situation where there is very little or no additional counter-clockwise turns of the telescope's focuser knob available when using a Denk Binoviewer and the Focal Reduction Arm of the Binoviewer Power x Switch or the "A" reducer arm of the Power Switch Star Diagonal, the Filter Switch might make "reduction-Mode" no longer possible. Call techincal assistance if unsure of how to determine this. 866-340-4578.
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.
[Add to Wishlist]