Astro Fov Calculator -

This combo will show you a circle of sky just over twice the width of the full Moon.

: A simplified tool provided by a leading astronomy publication. Helpful Educational Resources Field of View Calculator - astronomy.tools astro fov calculator

You want to photograph the Pinwheel Galaxy (M101) which is 28 arcminutes wide. You input your Canon DSLR (APS-C sensor: 22.3mm x 14.9mm) and your RedCat 51 (250mm focal length). This combo will show you a circle of

Even experienced astronomers fall into these traps. The calculator is your safety net. You input your Canon DSLR (APS-C sensor: 22

To truly master the tool, it helps to understand the variables it uses. You don't need to be a mathematician, but understanding these four parameters will help you interpret the results correctly.

Did you forget you inserted a 2x Barlow? The calculator allows you to add these accessories.