The measurement of arc seconds per pixel is used when taking pictures of the sky for astronomical purposes. An arc second is a unit of measurement of the sky, and is equal to 1/360th of 1 degree. To get accurate photographs that are of good quality, it’s important to find out how many arc seconds per pixel your camera equipment can record in. This measurement is easy to figure out, thanks to a simple formula. Writer Bio

How to Calculate Arc Seconds Per Pixel - 84