Rivers of Gas

[gregbradley]

My fascination with the Vela Supernova Remnant continues.
It took me a while to locate this part of the nova. It shows up best in O111. But it is nearly invisible in less than about a minute exposure so a lot of trial and error to locate the interesting parts of the nova.

What an amazing amount of debris left over when a large star blows up. Huge amount of stuff. Just shows you how highly condensed stars must be.

TEC180FL, FLI PL16803, Tak NJP mount.
Astrodon 5nm O111S11HaO111 140 130 130 Ha was 1x1 binned and O111 and S11 were 1x1. I think its better to do 2x2 even on the Ha
and I did that on the last night imaging the Nova.

http://www.pbase.com/gregbradley/image/122389833

Greg.

[TrevorW]

Another really top image Greg

maybe a mosaic of the whole area could be on the cards ???

[Octane]

Electric dreams of neural networks.

Exquisite. Just the right focal length.

H

[[1ponders]]

Wow, I had to go back and look at it a second and a third time. What a depth of field you have given it Greg. I can almost touch the foreground veil. Beautiful shot.

[Bassnut]

Thats really cool Greg, detailed and smooth :thumbsup:.

Red (SII?) seems to have left some star artifacts. As an alternative view, ive clipped the background to isolate the cloud structure, sorry about the low res.

[DavidU]

What can one say?
Well I'll say it...........awesome.

[avandonk]

Here is your lovely picture on my HA widefield Greg. I think you have a tad more resolution. Never mind the quality feel the width!

Bert

[AlexN]

:eyepop:

I like it.

[spearo]

Wow!
frank

[alan meehan]

That would have to be one of the most amazing parts of the sky thanks greg for taking us there.
Alan

[Craig_L]

Amazing!

[AG Hybrid]

brilliant!

[jase]

Punchy details Greg. A not often seen sight of this vast complex. Thanks for sharing. Well done.

[leon]

Excellent work Greg, very punchy sort of stuff, and a joy to look at well done.

Leon

[Garyh]

Love it! This area has so much potential but gets overlooked by alot of imagers!

[gregbradley]

Thanks Trevor. I'd like to do a mosaic once I have my home observatory up as it would take a few weeks probably. FSQ106 with its reducer and the 16803 would be the choice or perhaps even AP140 with its reducer would be even better.





Its the O111 that has all the detail. It seems a lot of these objects are best in O111 - like Thors Helmet.



I fixed that now. Got rid of the red. Not sure where that comes from. I suppose S11 must see some stars that Ha and O111 don't?



Thanks David, I appreciate.

[Liz]

WOW!! That is beautiful Greg, thankyou .... and now my wallpaper :thumbsup:

[multiweb]

Beautiful part of the sky indeed. I can see why it's one of your favourites. Top shot. :thumbsup:

[gregbradley]

Its the O111 that has all the fine detail. Ha has some but O111 is the bulk. S11 is quite detailed as well which surprised me as it is usually the most bland.



Thanks Fred. I fixed those red stars. Not sure what causes that - S11 lets some stars through the other 2 don't? Anyway a bit of colour range tool fixed it.

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.



Thank you very much David.



That's amazing how you do that Bert. I see I lucked out in that that was the exact area I wanted to image as it looked like it had the most detail in it for O111 and Ha areas. I was hit or miss though as I wasn't sure where I was in the field. I guess the hour I spent trying to find it was worth it. 1 minute exposures just to frame it. I wish the Sky V6.0 had Vela in it - its a hell of an omission.



Thanks Alex. The TEC180 does all the work really.



Thanks Frank.



I think its one of the best areas of both the northern and southern skies.



Thanks Craig.





Thanks Jase.



Its quite a dramatic part of the sky. The vastness of the explosion is mind boggling. Lets hope one of these stars doesn't blow up near earth.

I wonder if there is dangerous amounts of energy left in these shock waves or is it all dissipated by now?



Thanks Gary. Its not well documented in software and it is virtually invisible to anything less than about a minute exposure so its a tad hidden.



Excellent!



It sure is my favourite. Rob Gendlers image is a reference image for me. He has done the best job of it. FSQ106N and STL11 on a Paramount ME in Bringelly is what he used and the sky 6 and the mosaic tool I imagine for software planning and execution of the mosaic.

Greg.

[lacad01]

Outstanding work Greg :thumbsup:

[Tom Davis]

Lots of filaments! Great shot mate!

Tom

[gregbradley]

Thanks for that.



Yes I'll say. Its a busy area.

Thanks Tom.

[marc4darkskies]

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

Cheers, Marcus

[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 :thumbsup:

Mike

[Bassnut]

11002?, oh please, QE? woefull :P. 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]

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 :thumbsup:...I think I will have my camera before Humi too :P :D

Mike

[gregbradley]

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.



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.