Image of the day

From the
ATWB Customer Gallery

My First WOW image

My Account

New to Astromart?

Register an account...

Need Help?

Atmospheric dispersion correctors

Started by ddoctor, 01/23/2007 02:10PM
Posted 01/23/2007 02:10PM Opening Post
Anyone out there using these and if so, what specific product do you like and what are your experiences in general with them. Specifically,
1) Do they really help if you are also using dichroic filters?
2) Below what altitude of the object of interest do you find it necessary to use them
3) Do they change significantly FL of your set-up and/or are there certain barlows/ televues that they don't work well with
4) Are the corrections easy to make visually and/or does it depend on the specific product?

Thanks very much,