1Compute the field of view in arcmin and the pixel scale in

1.Compute the field of view (in arcmin) and the pixel scale (in arcsec per pixel) for CCD obersvations with the following telescope and instrumnet.

Solution

Pixel Scale = 206,265 arcseconds X pixel size / focal length

f ratio = f/6 = aparture diameter = 1 m

Focal length = 6m

Pixel Scale = 206,265 arcseconds X 18 x 10^-6 / 6 = 0.619 arcsecond

Field of View = 3438 arcminutes X pixel array dimension / focal length

Pixel Array Dimension = Number of Pixels x Pixel Size = 1024 x 1024 x 18 x 10^-6 = 18.87

Field of View = 3438 arcminutes X 18.87 / 6 = 10813 arcminutes