cygnus to cepheus

[toxic]

12 panel mosaic with the canon eos 200d 50mm f1.8 at f7.1 - 15 x 60 second subs per panel all on the SW Star Adventurer.

[adyj1]

I'm impressed ☺ 

A question, though - as a complete noob at widefield (and also having the 200d and a F1.8 50mm), why f7. 1? I have read that the widest aperture is normally too wide, so you have to step it back one, but isn't 7.1 quite a few steps? Do you have to just try it and see? Am I not reading the right stuff? ? 

Thanks 

[toxic]

3 hours ago, adyj1 said:

I'm impressed ☺ 

A question, though - as a complete noob at widefield (and also having the 200d and a F1.8 50mm), why f7. 1? I have read that the widest aperture is normally too wide, so you have to step it back one, but isn't 7.1 quite a few steps? Do you have to just try it and see? Am I not reading the right stuff? ? 

Thanks 

thanks adyj1

the reason for f7.1  is that the stars in the corners stay round  and don't suffer from coma and in this case they are all taken are iso 12800 at 60 seconds but when we get astro dark i will be able to get 5 minutes at 12800  hope this helps.

[adyj1]

It does, thanks. 

Oo, astro darkness - I remember that! ?