On Sun, 25 Oct 2020 21:16:59 +0100, Björn Lundin 
declaimed the following:

>
>I do not have tracking - yet. But that is part of whats fun with a pi
>(and 3d-printer). I control the elevation but not the azimuth.

 Alt/Az mounts will add another complication -- image rotation. From a
quick read of the software web site, I can't tell if the stacking software
applies corrections for image rotation. I believe the software that came
with my (archaic these days) Meade Lunar-Planetary Imager (monochrome) and
Deep-Sky Imager (color) does apply rotations if needed -- haven't used them
in 20 odd years (I need to find new battery holders that fit the arms of
the 8" SCT).

 An equatorial mount, if reasonably polar aligned, only requires
tracking in right ascension (east/west) as the declination (north/south) of
an object doesn't change as the night goes on. No rotation of objects in
the view.


--
 Wulfraed                 Dennis Lee Bieber         AF6VN
 wlfraed@ix.netcom.com    http://wlfraed.microdiversity.freeddns.org/

--- SoupGate-Win32 v1.05