The Double Cluster & Stock 2

Last night I managed 16 x 5-minute subs on the Double Cluster region using the Canon 200mm lens with the M25C OSC and a 52mm IDAS filter on the front of the lens.  The filter stops the lens down to f#3.85 with the native lens diaphragm wide open – hence no 8-pointed diffraction spikes 🙂  Lots of water vapour in the air – but fortunately no Moon.

Share:
  • Print
  • Digg
  • StumbleUpon
  • del.icio.us
  • Facebook
  • Yahoo! Buzz
  • Twitter
  • Google Bookmarks
  • LinkedIn
  • Live
  • Reddit
  • Tumblr

Leave a Reply

Your email address will not be published. Required fields are marked *