Image of the day

Captured by
Erwin Forbragd

M27, The Dumbell Nebula

My Account

New to Astromart?

Register an account...

Need Help?

Re: Determining 'Illuminated Field'

Started by 1953, 11/17/2007 03:05AM
Posted 11/17/2007 03:05AM Opening Post
Good old algebra for a straight line. Y=MX+B. B is one half of the fully illuminated field you choose. I recommend 35MM.

Jeff

"Don't sweat the petty things and don't pet the sweaty things" 8O