I set up an ASI2600MM on an 80mm Apo triplet with a 2" ZWO EFW and M68 OAG-L. All is screwed together as shown in your method to connect these together to achieve the 55mm backfocus (shown here:https://astronomy-imaging-camera.com/tutorials/asi2600-guide-4-connection-methods-to-get-55mm-back-focus-length.html under 3.2 method). The Stellarvue 80 mm scope has an excellent flattener to image at it is used at f/6. My guiding is excellent but I am experiencing some tilt (around 14% according to CCD Inspector). I have not determined whether the tilt is due to optics or the camera as I would need to unscrew the camera and re-orient it. But either way, how do I correct for this as I can see some elongated stars on one side of the image? Do I try to adjust using the M48 adapter plate that was installed as part of the setup described?
First, you need to refer to below link: https://astronomy-imaging-camera.com/tutorials/reason-of-field-tilt-problems-and-how-to-solve-it.html https://www.testar.com.au/blogs/astro-testing/ccd-inspector You can refer to 2600 manual about Tilt Adjustment: https://astronomy-imaging-camera.com/manuals/ASI2600_Manual_EN_V1.3.pdf
I read all of those but they do not help to adjust the tilt with the setup you suggest with the camera screwed to the filter wheel after the tilt plate is removed. Do you try to adjust the tilt with the tilt plate which is now on the OAG-L?
umasscrew39 Do you try to adjust the tilt with the tilt plate which is now on the OAG-L?
No, you need to adjust the tilt on camera first.
ok- thank you for clarifying
