Calculating/estimating minimum exposure time per sub

Started Sep 24, 2017 | Questions thread
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RudyPohl Veteran Member • Posts: 5,295
Calculating/estimating minimum exposure time per sub

HI there,

I need some help figuring out what should be my minimum ideal exposure time for my subs so that with 2-3 hours of data I can render the fainter details in the image like dust, nebulosity, faint stars, etc. of DSOs like Orion Nebula, Andromeda Galaxy, Rosette Nebula, etc.

I will be using this gear:

a Nikon D5500 camera
a Nikon 300/f4 lens set at aperture f5.2
ISO 1600
Star Adventurer tracker


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Nikon D5500
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