Quote:
Originally Posted by cometcatcher
Notice the middle part of the photo is lighter than the edges? Most scopes have this to some extent. It becomes amplified with image stretching. You could always setup early and take the flats before you start the session, but you have to keep the camera orientation the same throughout the imaging session.
Sorry no idea on exposure for your circumstances. I think you are limited anyway being unguided if you are still using the EQ3.
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Really thanks for your help. You like my mentor teach me a lot.
If I have to take flat in the same session I guess will be very hard. I normally do it in my balcony after work which the sky is getting dim. I was considering use light box or something however I have the LP filter in my cam so I guess it may not working probably? I tried to leave the setting until next day and use the sunlight however I have to wait till weekend to do that.
Anyway
