Loading ...
Sorry, an error occurred while loading the content.
 

Re: [ccd-newastro] Increasing FL for planets

Expand Messages
  • Paul Sterngold
    I believe the rule-of-thumb for lunar/planetary CCD imaging is 0.5 arc-secs per pixel resolution. EP projection will provide a more dramatic increase in
    Message 1 of 1 , Sep 5, 2000
      I believe the rule-of-thumb for lunar/planetary CCD imaging is 0.5 arc-secs
      per pixel resolution. EP projection will provide a more dramatic increase
      in effective FL than inserting a Barlow. Use whichever one gives you the
      appropriate resolution.

      Paul Sterngold

      --- john_strachan <john_strachan@...> wrote:
      > I have a TV101 and an MX5c camera. I would like to be able to be able to
      > increase the focal length of the system so that I can attempt to take
      > pictures of Saturn and Jupiter. I understand that I could use either
      > eyepiece projection or barlow(s) to increase FL. What would be the
      > reccomendation of the group. I have a decent selection of EP's and a
      > single x2 Meade 140 barlow. Using a flip mirror, how would I arrange the
      > various elements? Would the same reccomendations hold to simply increase
      > the FL by x2 to get the Nyquist sampling right for deep space imaging?
      >
      > John
      >
      >
      > --== Sent via Deja.com http://www.deja.com/ ==--
      > Before you buy.
      >


      __________________________________________________
      Do You Yahoo!?
      Yahoo! Mail - Free email you can access from anywhere!
      http://mail.yahoo.com/
    Your message has been successfully submitted and would be delivered to recipients shortly.