Stellarium is a planetarium, but its Oculars plugin turns it into a live FOV simulator.
Did you know 10x50 binoculars have a ~6.5° TFOV? That’s 13 moons wide! A calculator helps compare binoculars to finder scopes.
print(hot_fov(20, 600, 23.5)) # 2.24° print(hot_fov(35, 600, 23.5)) # 2.23° (notice the slight shrink)
This script proves that on a hot day, your telescope’s focal length actually increases, reducing your true FOV by fractions of a degree. For mosaic planning, this matters.
Stellarium is a planetarium, but its Oculars plugin turns it into a live FOV simulator.
Did you know 10x50 binoculars have a ~6.5° TFOV? That’s 13 moons wide! A calculator helps compare binoculars to finder scopes.
print(hot_fov(20, 600, 23.5)) # 2.24° print(hot_fov(35, 600, 23.5)) # 2.23° (notice the slight shrink)
This script proves that on a hot day, your telescope’s focal length actually increases, reducing your true FOV by fractions of a degree. For mosaic planning, this matters.
