Did some test photos of sky with EOS350D digital camera.
All using 75-300 f/4-5.6 telephoto on objects near equator.
Max time for no trailing...
8" 75mm f/5 iso 400
4" 300mm f/5.6 iso 800
Obvious trailing...
8" 300mm f/5.6 iso 1600
I usually write a blog post about once a week. The latest post can be viewed here: Deranged Rants: Many of them are totally feral, unhinged, and totally irrational. (posted 2024-11-13 at 17:55:14). I do podcasts too!. You can listen to my latest podcast, here: OJB's Podcast 2024-08-22 Stirring Up Trouble: Let's just get every view out there and fairly debate them..