In follow-up to my first question, please tell me the mechanical length of this device, really its optical length in mm from mating surface to mating surface excluding the protruding threads. The charts you mentioned do not provide this information, and I need to determine if there is sufficient backfocus distance on my optic to install it.
I have Celestron Evolution 8 EdgeHD scope with a 2" SCT thread on the rear cell. I am struggling to find the correct model diagonal for that rig, can you please provide additional information? I read the primer helpfully provided, but there are two options that are both recommended, the SCT-Clicklock visual back + the clicklock diagonal CLDIAG-2, and the same diagonal but this time mounted somehow flush on rear cell. Which is actually better? The eyepiece I was most is my Mark IV 8-24mm Zoom w/Barlow combo, if that matters.
The ideal backfocus of the Edge HD 8 telescope is 133,35mm behind the 2" thread on the rear end. The closer you come with the eyepiece field stop to this point, the better is the star image on the edges of the field. The mirror has 112m optical length. The ClickLock 2" clamp for the rear end of the telescope has 47mm optical length. Means either way works similar good, you are always a little more tahn 20mm from the ideal focus point, wich is not an issue for visual observation with this telescope, especially not when observing with high magnification. When attaching a camera, you will need to take care that you are exactly in the right distance with the CCD sensor, as described in the manual of the telescope.
Answer by: Baader Web Team (Admin) on Apr 13, 2021 9:15:00 AM
Unfortunately we don´t know a combination with a coma corrector that will fit. Coma Correctors like our MPCC have 2" barrel to come in the right place in the optical path. And they provide a different thread on the camera side that is not fitting to this adaptor
Answer by: Baader Web Team (Admin) on Apr 13, 2021 8:16:00 AM
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