john_drummond
17-04-2005, 04:12 PM
Hi all,
here's another image from last night - the Trifid and Lagoon Nebs. It was taken with the Sigma 70-200mm f2.8 APO + a 1.4x telextender. Thus 200 x 1.4 x 1.6 = 448mm f4.
The transparancy last night was bad - high humidity, chimney smoke?, high cloud etc so the sky looks a little brown...:confuse3:
A larger image can be seen at:
http://www.possumobservatory.co.nz/lagoon&trifid-448mm@f4-17x3min-050416-web.jpg
or
http://tinyurl.com/b8mz5
Cheers
John
here's another image from last night - the Trifid and Lagoon Nebs. It was taken with the Sigma 70-200mm f2.8 APO + a 1.4x telextender. Thus 200 x 1.4 x 1.6 = 448mm f4.
The transparancy last night was bad - high humidity, chimney smoke?, high cloud etc so the sky looks a little brown...:confuse3:
A larger image can be seen at:
http://www.possumobservatory.co.nz/lagoon&trifid-448mm@f4-17x3min-050416-web.jpg
or
http://tinyurl.com/b8mz5
Cheers
John