2020-07-10, 01:37 AM
(This post was last modified: 2020-07-10, 01:52 AM by theskyhound.)
(2020-07-10, 01:11 AM)RonM64 Wrote: For reflecting telescope setup, is the secondary mirror percent obstruction defined based on linear units, (e.g. diameter2/diameter1) or area units (e.g. area2/area1). I think most often the obstruction is reported based on linear units, but not necessarily always, so I wanted to confirm what SkyTools expects. Thanks!
Hello,
Yes, you are correct. The central obstruction is expressed as a fraction (e.g 39.1% is 0.391) of the diameter of the primary aperture.
That would make a really nice addition to the help.
Clear skies,
Greg
Head Dude at Skyhound
Greg
Head Dude at Skyhound