No one has mentioned that the atmospheric turbulence typically smears stars across an arcsecond or more (depending on local heat sources, jet stream etc),”. Above about 8” and you start getting affected by atmospheric turbulence and the resolution doesn’t improve with aperture (Freid parameter), unless you have an expensive laser powered adaptive optics setup.
For seeing the most stars in a field of view the following might be useful:
https://www.cloudynights.com/articl...oculars-will-give-you-maximum-star-counts-r88
Don’t forget he power of binocular vision, enabling fainter little stars to be seen using a solidly mounted binoculars… close one eye and they vanish.
Binastro, II have always used 2.7+5log10(D)…. From Norton’s. Interesting the first number isn’t so carved in Stone! What was your suggested formula?
Unless you are good at counting I would avoid intensifiers, that can show vast numbers of stars in otherwise blank skies (using suitable filters), reminding you of the impact of light pollution. Intensifiers are like other imaging devices though and respond best when paired to very fast optics.
Collecting data on human optical perception is usually hindered by very small sample size as it’s hard to persuade sane people to spend hours in dark boxes looking at dim flickering lights. The standard human observer for colour perception is only based on a few dozen subjects and so not necessarily very representative of the spread actually found in society.
Interesting thread!
Peter
For seeing the most stars in a field of view the following might be useful:
https://www.cloudynights.com/articl...oculars-will-give-you-maximum-star-counts-r88
Don’t forget he power of binocular vision, enabling fainter little stars to be seen using a solidly mounted binoculars… close one eye and they vanish.
Binastro, II have always used 2.7+5log10(D)…. From Norton’s. Interesting the first number isn’t so carved in Stone! What was your suggested formula?
Unless you are good at counting I would avoid intensifiers, that can show vast numbers of stars in otherwise blank skies (using suitable filters), reminding you of the impact of light pollution. Intensifiers are like other imaging devices though and respond best when paired to very fast optics.
Collecting data on human optical perception is usually hindered by very small sample size as it’s hard to persuade sane people to spend hours in dark boxes looking at dim flickering lights. The standard human observer for colour perception is only based on a few dozen subjects and so not necessarily very representative of the spread actually found in society.
Interesting thread!
Peter