Monday 14 March 2011

Ha Full Disk 13th march 2011

Full Disk Ha lrg, originally uploaded by Mark Townley.

This shot was taken with the double stacked 40mm Coronado etalon mounted on a 420mm fl scope, used with a barlow nosepiece to give an focal ratio of about f16. The camera was the PL130M, and while this is quite a quirky imaging device I think i'm slowly getting the hang of it. This is a 'one shot' exposed to show the disk features and the prominences around the limb simultaneously. Unfortunately there weren't any large proms, however the overall image was quite interesting.