|
Joes reply:
FOV (degrees) = (114.6 x sensor size) / (2 x focal length)
-------------------------------------------------------------------
Worked example:
ZWOASI1600MC has a sensor size of 17.6 x 13.3mm.
My focal length (refractor) = 560mm.
I converted mm to meters (just guessing the right thing to do).
Long dimension of FOV:
(114.6 x 0.0176) / (2 x 0.560) = 1.8 degrees
--------------------------------------------------------------------------
The answer above (1.8 degrees).
Measured dimension taken from my images is 3.4 degrees.
Not sure about this. Might be the field flattener??
|