[sadia]

Hello,
Hope this is the right forum section to ask this. I am quite new to astrophotography and wanted to clarify few things that i am not too sure about. Any input will be very helpful

Suppose i have a set of 60sec frames and set of 120sec frames.

1. Normalizing diffrent length exposure:
when i do normalize them should normalize whole lot or should i only normalize 60sec frames with 60sec frames and 120sec frames with 120sec frames

2. Stacking diffrent length exposure:
Should I be stacking all data together or should I stack them in diffrent groups (eg 60secMaster, 120secMaster) and then process those groups seperately?

Regards
Sad