Richard Crisp wrote:
here is one more from the Microline ML8300 and the Pentax 6x7 400mm f/4
ED(IF) lens

I was planning to take a full set of sulfur, hydrogen and oxygen but the
conditions deteriorated last night by the time i finished the oxygen data so
I had to give up with only Ha and O3 in the can

I managed to get 11 x 10 minutes of decent Ha shots and 10 x 10 minutes of
decent [OIII].

the seeing was not so hot and got worse but the killer was the cloud cover
that moved in just past midnight :-(

anyway here is the Rosette in Ha / [OIII]

It is sort of OK, maybe you will like it

http://www.narrowbandimaging.com/inc...x10min_xga.jpg

Short focal length but small pixels makes a good combination. How was
the color mapped? Red for Ha and OIII for green and a combination for
blue? Just guessing

Rick


--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".