Celestron provides a T-adapter to SC which gives you the right distance, but it uses only the T-thread (M42x0.75) and will cause vignetting on a full-frame sensor (and is also calculated for a DSLR with 55mm flange distance.
Answer by: Baader Web Team (Admin) on Jun 5, 2020 3:00:00 PM
When using the Safety Herschel Wedge, no additional front aperture filter is needed.
Please also read the instructions for the Herschel Wedge thoroughly and only use this product if you feel well informed about the consequenzes of wrong handling.
Answer by: Baader Web Team (Admin) on Jun 5, 2020 8:36:00 AM
I also have a Celestron Evolution HD 8 telescope. My diagonal is 1.25 inches. Can I install the 2 inch Clicklock as the telescope’s new visual back, immediately followed by the 2 to 1.25 inch Clicklock Reducer, then my 1.25 inch diagonal (regular non-Baader)?
My telescope is a Celestron NexStar Evolution 8 HD. I have a Morpheus 6.5 mm eyepiece and want to do eyepiece projection with a Celestron Neximage 10 camera. Page 2 of the Morpheus Instruction Manual lists required parts to do this but I don’t understand the multiple choice part selection I should consider. First, the camera is at the top with immediately below it either a Clicklock clamp 2458100 or a focusing eyepiece holder 2458125. Is there a purpose for choosing 2458125 which can move (also cheaper than the Clicklock clamp which doesn’t move)? Then there is a T-2 extension tube in three sizes. How do I determine which size to purchase (7.5, 15, 40mm)? I also have a Hyperion Zoom eyepiece and would the same choice of required parts apply to it?
There you will also find the formula which gives you the effective focal length which you reach with this method. It depends on the distance between eyepiece and sensor. Also, with a larger sensor like a DSLR, you need a larger distance, otherwise there will be distortions at the field of view. Also, the desired f/ratio depends on the pixel size of your camera; it shouldn't be slower than f/30; cameras with very small pixel even work best at f/10, otherwise the pixel size and the resolution of your camera don't match.
So, you should determine the desired effective focal length and match the T-2-extensions to it. With a long-focal-length telescope like a Schmidt-Cassegrain, you'll probably prefer the Hyperion zoom over the Morpheus because of the resulting focal length.
Both Morpheus and the recent Hyperion eyepieces require the M43/T-2-adapter #2958080.
You can use both 1.25" clamps. The Clicklock gives a firmer grip, while you can better finetune the distance with the cheaper clamp - and it is especially interesting for focusing, so that you can avoid any mirror shift by telescopes like a Schmidt-Cassegrain.
Answer by: Baader Web Team (Admin) on Jun 3, 2020 9:24:00 AM
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