I am running into problems figuring out the focal length to use with my new ZWO ASIAir Pro and ZWO ASI071 MC Pro camera and AP Stowaway. I have tried inputting 0 to have the ASIAir Pro calculate it but it comes up with 648 or 649, and I'm not sure it takes into account the field flattener (or the Precise Parts Adapter). I haven't used the Pro with the AP130 Gran Turismo yet since I'm having so much trouble. And I have tried uploading an image from the first night where things worked to Astrometry.net to calculate but it's going on 12 hrs processing/queued! Unfortunately I didn't write the focal length down for reference later that first night. So my plate solves are a crap shoot and I get told my FOV is ? x ? and outside the range and plate solve fails. I have posted questions on the ZWO Facebook group and on the Celestron AVX group and still no clear answers.
Any help in figuring this out would be much appreciated. Here are the two scenarios I would be using per George at Astro-Physics.
130 EDFGT with 67PF562 field flattener:
67PF562 + A1262 CCD Adapter + A3503-A (Extension) + ADA27-42 + new camera (ASI071MC Pro)
Stowaway with 92FF field flattener:
The below screenshot is the info on the Precise Parts Adapter: on my Stowaway: