Filter Wheel
Here are some pictures of an Andy Saulietis filter wheel.
Here is an up to date list of filter sets from Edmund Optics.
* I used the same listing Chuck Shaw has on his web site. The main difference is that I retrieved the latest part numbers and prices. Please don't be angry Mr. Shaw for my plagiarism.
(Part numbers and prices last updated December 18, 2004)
RGB Filter set: Part # NT52-546 for three unmounted 25mm dia, 2mm thick, additive dichroic filters ($59.00+shipping)
CMY Filter Set: Part # NT52-549 for three unmounted 25mm dia, 2mm thick, subtractive dichroic filters ($59.00+shipping)
IR Cutoff Filter: Part # NT53-710 for one unmounted 25mm 1.1mm thick filter ($46.00+shipping)
Clear Filter: Part # NT32-951 for one unmounted 25mm dia, 2mm thick filter, AR coated both sides, one wave flat ($19.00+shipping)
Click on the picture to see a larger version.
| Here is Andy's new design for his filter wheels. As you can see they now have 6 holes for filters than the original 4. Also the whole case design is completely different. If your interested in seeing the previous design check out this link to Chuck Shaw's web site. |
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| Here I am trying to show how Andy has made it easier to mount the filters into the wheel. There is a little lip on both sides of a hole that hold filters in place. From what I have read and understand from the CCD listserv the previous version of the wheel had no easy way to hold filters in place and people came up with ingenious ways to hold them in place. |
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| Here is another picture from a different angle and closer that shows the inside of one of the holes in the wheel. |
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| Here you can see how to place filters into the wheel. There are two small screws to remove and then one side of the wheel comes off. You can then place the filters into the holes and then replace the removed side. Makes for easy insertion and holding of ones filters. |
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| Here is a picture of the wheel attached to my camera. The wheel now screws into the same place as the T-adapter. For me this doesn't work so well as the wheel hits the screws that hold the metal box cover on. I may have to look for some adapter that would extend out and then attach the wheel to that. |
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| Here is a front side shot of the camera and filter wheel. |
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| Here is a shot of the camera and filter wheel mounted on the telescope. |
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