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AstroShop - CCD FOV CALCULATOR

CCD & Telescope FOV calculator

To use this simple calculator, you need to check the specifications of the CCD chip for your camera that comes with the manufacturers specifications. When entering the focal length you must take in to account any focal length shortening (reducers) or barlow lenses etc that alter the telescopes effective primary focal length.

For non-square CCD arrays you'll need need to enter the values for pixel size and number of pixel for each axis of the array to get a final "A" x "B" field of view result. For example, our GSTAR-EX4 camera yields a view on a T.V monitor roughly 32 x 20 arc minutes with a 10-inch 254mm f/5 Sky-Watcher Newtonian.


Camera Pixel Size um (Microns)
No. Pixels across or down (the Chip array)
Telescope focal length mm

 


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