Loops of NGC3576

Peter Ward · #1 21-04-2010, 11:22 PM

Starting to push the STX system a bit now.

I consider NGC 3576 to be one of the most spectacular nebulae in the SH, but it's not very bright, hence not imaged that often.

The extra QE of the new sensor was quite welcome.

Another couple of hours of H-alpha (if the weather permits) and colour data would be nice...but here is the first hour of H-alpha.

http://www.atscope.com.au/BRO/gallery54.html

alan meehan (Alan) · #2 21-04-2010, 11:28 PM

Peter thats a amazing shot cant wait to see some colour .
ALAN

alexch (Alex) · #3 21-04-2010, 11:29 PM

Superb! The detail and dynamic range are just stunning. Eagerly waiting for the colour version.

Alex

multiweb (Marc) · #4 22-04-2010, 08:24 AM

Beautiful shot. Great area in Ha.

CoolhandJo (Paul) · #5 22-04-2010, 08:45 AM

Thanks for posting this nebula. Very nice image and very nice target. Looking forward to the masterpiece completion for additon to my desktop background!

Hagar (Doug) · #6 22-04-2010, 09:41 AM

The detail is stunning Peter. Looking forward to seeing it fully RGB.

TrevorW · #7 22-04-2010, 09:52 AM

I don't know whether colour would make that any more spectacular sometimes b&w are stunning and this is one of them

Ric · #8 22-04-2010, 10:16 AM

That's a wonderful HA image Peter, reminds of a big piece of fairy floss.

Looking forward to the colour version, that will be something special.

Cheers

Paul Haese · #9 22-04-2010, 10:23 AM

Peter, the field is certain nice. Huge in fact. Detail looks pretty good too. The colour rendition should be interesting. Its on my list to re image this year or next with the TSA. I found that this had a lot of blue in it with the modded 40D and I suspect this would look great with some OIII in the blue. What sub lengths are you running? I was thinking something like 15 to 20 minutes with the QSI to keep the ADU up.

Only thing that really hits me is there is some noise present through out the image. Not a lot but I suspect you already know this and hence the reason for the extra time in Ha planned.

duncan · #10 22-04-2010, 10:32 AM

WOW! incredible detail and can't wait to see this in full colour.
Cheers,
Duncan

h0ughy (David) · #11 22-04-2010, 10:59 AM

its a lovely tease Peter

Peter Ward · #12 22-04-2010, 11:45 AM

Thanks Alan, Alex, Marc, Paul, Doug, Trev, Ric, Paul Duncan and Dave...whew!

As I mentioned, this is not the brightest of nebulae, hence there is a smidge of noise which another hour or three should iron out.

I found while 10 minute subs were fine, the sheer sensor area collected cosmic ray hits by the dozen, which required a good set of darks to eliminate.

Paul Haese · #13 22-04-2010, 02:52 PM

Fair enough. Yes dark subtration means a whole lot more with a larger sensor. Thanks for the info Peter.

marc4darkskies (Marcus) · #14 22-04-2010, 10:37 PM

Now your talking Peter!!

Bring on the colour!

Cheers, Marcus

Peter Ward · #15 22-04-2010, 10:49 PM

Quote:

Originally Posted by marc4darkskies

Now your talking Peter!!

Bring on the colour!

Cheers, Marcus

Bless you Marcus!

But, I'm still banging away at the H-a data.....three hours should do it....self guide, via a remote desktop connection, with a glass not too shabby Hunter red...gee this imaging gets tough at times...