Image of the day

Captured by
Patrick Forster

Evening Grosbeak

My Account

New to Astromart?

Register an account...

Need Help?

"An Apochromatic Refractor"

Started by Karen, 10/25/2002 08:14PM
Posted 10/25/2002 08:14PM Opening Post
Does anyone now where I can get a copy of the essay/article written by Roland Christian "An Apochromatic Refractor?" Written in the early 1980's I believe. Thanks.