Rivers of Gas

[Tom Davis (Tom)]

Lots of filaments! Great shot mate!

Tom

[gregbradley]

Originally Posted by lacad01

Outstanding work Greg

Thanks for that.

Originally Posted by Tom Davis

Lots of filaments! Great shot mate!

Tom

Yes I'll say. Its a busy area.

Thanks Tom.

[marc4darkskies (Marcus)]

I'm not a big fan of NB but this is a very striking image Greg! Well done!

Cheers, Marcus

[strongmanmike (Michael)]

I'm in the process of redoing it from the ground up to use median combine as these newer sensitive chips really pick up cosmic rays and sum combine lets these little squiggly lines through and median combine filters them out. The slight extra detail of the sum combine (not always any difference though) isn't worth the rubbish it leaves behind.

Yeh..? Hmmm? I'll be interested to see this..? My subs from the PL11002 have been so clean off the camera that I have always just used Sum too.

Do you use the RBI feature all the time or, like others, have you found it somewhat unecessary with the 16803?

Great shot BTW Greg

Mike

[Bassnut (Fred)]

11002?, oh please, QE? woefull . Your in for a pleasent shock Mike (with the 16803), and RBI is a shocker hope you dont have to use that any more.

[strongmanmike (Michael)]

Originally Posted by Bassnut

11002?, oh please, QE? woefull . Your in for a pleasent shock Mike (with the 16803), and RBI is a shocker hope you dont have to use that any more.

Yes the 16803 has better QE than teh 11002 so I am looking forward to that, any extra QE especially in the red will be very welcomed.

I didn't have RBI problems with the 11002 and I am lead to believe it isn't bad in the 16803 and maybe even non existant? The ProLine has the RBI flush system anyway just in case though ...I think I will have my camera before Humi too

Mike

[gregbradley]

Originally Posted by marc4darkskies

I'm not a big fan of NB but this is a very striking image Greg! Well done!

Cheers, Marcus

I am not super big on NB either but they can turn out nicely sometimes. Fred is more the master of them, so is Ken Crawford. I think objects rich in O111 may be overall more pleasant than those with low O111 content.

Originally Posted by strongmanmike

Yeh..? Hmmm? I'll be interested to see this..? My subs from the PL11002 have been so clean off the camera that I have always just used Sum too.

Do you use the RBI feature all the time or, like others, have you found it somewhat unecessary with the 16803?

Great shot BTW Greg

Mike

RBI feature is only accessible using Maxim DL and I use CCDsoft so no I haven't used it. I haven't noticed RBI on either the 16803 or the STL11.
Richard Crisp says its there even if not too bad. RBI flush increases noise so it comes at a cost. Also the flushing means some noise leaks out as the exposure progresses hence the need for higher cooling for RBI flush to be effective to keep your darks matching the lights. RBI flush was a late extra added to the Apogee U16M which could be retrofitted but I didn't bother as it didn't seem to be a factor in my images or if it were I missed it. The 16803 and 8300 though pick up a lot more cosmic rays than the 11002 at least my STL11 showed very few cosmic rays whereas you look at a single dark from a 16803 and it has quite a few squigglies in it. They sigma reject out when doing your combine for a master dark.

[Martin Pugh]

Love this image Greg - not sure I have seen this region before.

I can see a bit of noise in this, but still, a fine image indeed.

cheers
Martin

[gregbradley]

Thanks Martin. I probably stretched the data a little hard. Its "only" 5 hours but that has to do until I build an observatory at my new house which has relatively dark skies. Then I can do mega data like you which is the way to go.

When I travel to my dark site getting a few clear nights you decide carefully what to image as a night lost doesn't come around again for another month. Also some objects don't turn out like you thought they might. So lots of hours on one project that may not turn out is a risky investment of available time.

Cheers,

Greg.