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Astrophotography Exposure Calculator
Calculate optimal exposure settings for deep sky astrophotography
Telescope Focal Length
(mm)
Telescope Aperture
(mm)
Camera Pixel Size
(μm)
Target Magnitude
(mag)
Sky Conditions
Excellent (Bortle 1-2)
Good (Bortle 3-4)
Moderate (Bortle 5-6)
Poor (Bortle 7-9)
Calculate