Nice one Richard, enough data for the Ha:OIII:OIII. I am too lazy to take
three narrow band channels anyway, so I like this approach even if was
forced by the weather.

Stefan

"Richard Crisp" schrieb im Newsbeitrag
m...
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