SGP and pixel scale.

[MARS1960]

Hi all,

Just downloaded SGP and i'm stuck on the pixel scale, i have the specs of my camera but it doesn't give pixel scale, i'm not even sure i know what that means.

Can anyone help with pixel scale for a QHY8L please.

[vlaiv]

Depends on focal length used. It's ratio of angular size on sky and size in imaging plane - expressed in (famous) arc seconds / pixel, or "/pixel.

You can either calculate it manually, and hence approximately, or you can do plate solve and get a bit more precise value.

http://www.wilmslowastro.com/software/formulae.htm#ARCSEC_PIXEL

 

[MARS1960]

19 minutes ago, vlaiv said:

Depends on focal length used. It's ratio of angular size on sky and size in imaging plane - expressed in (famous) arc seconds / pixel, or "/pixel.

You can either calculate it manually, and hence approximately, or you can do plate solve and get a bit more precise value.

http://www.wilmslowastro.com/software/formulae.htm#ARCSEC_PIXEL

 

Thanks, i did that on the attached screen shot, i didn't realise that resolution and pixel scale were the same thing, we learn something new everyday, thank you.