NGC7309 - Three armed spiral?

JD2439975 (Justin) · #1 26-06-2010, 04:17 PM

Not sure if this is a true three armed spiral but it sure looks that way.

4 hrs 50 mins of 5min subs, darks, no flats, processed in PS.

Took this one a while ago & was hoping to add some to it but the weather as it is I'll probably never get around to it.
At a Mag of 12.8 & a size of approx 2 arcmins square it really needed a bit more to bring out the faint spirals.

But here it is anyway...I'm happy enough.

Justin.

DavidU (Dave) · #2 26-06-2010, 05:13 PM

Nice wide field there Justin. done with a Newt?

SkyViking (Rolf) · #3 26-06-2010, 06:54 PM

Beautiful image Justin. Thats a nice little fellow, I don't think I have ever seen this imaged before. Nice work!

JD2439975 (Justin) · #4 26-06-2010, 07:53 PM

Quote:

Originally Posted by DavidU

Nice wide field there Justin. done with a Newt?

Gidday Dave, yep done with the 10" GSO & 40D, something like a 50-60% crop & it still looks wide.

Quote:

Originally Posted by SkyViking

Beautiful image Justin. Thats a nice little fellow, I don't think I have ever seen this imaged before. Nice work!

As soon as I saw an image of it in WWT I thought "got to have it".

So, so many striking galaxies of this size in the sky, just a shame they're so hard to image in detail at that size.

David Fitz-Henr · #5 26-06-2010, 11:08 PM

Nice image Justin! It looks like a three armed spiral to me as well (with one broken arm) - certainly a challenge to image at such a small angular diameter. Well done!

JD2439975 (Justin) · #6 27-06-2010, 02:00 AM

Quote:

Originally Posted by David Fitz-Henr

Nice image Justin! It looks like a three armed spiral to me as well (with one broken arm) - certainly a challenge to image at such a small angular diameter. Well done!

Thanks David, yes the broken arm is an interesting feature, makes me wonder what sort of dynamics are involved...then my brain starts to hurt so I go back to looking at pretty pictures.

strongmanmike (Michael) · #7 27-06-2010, 03:04 AM

So what exactly attracted you to imaging this galaxy then

It's pretty cool, the spiral arms are quite well defined

MIke

JD2439975 (Justin) · #8 27-06-2010, 04:08 AM

Quote:

Originally Posted by strongmanmike

So what exactly attracted you to imaging this galaxy then

It's pretty cool, the spiral arms are quite well defined

MIke

Definitely the unusual three armed nature of the beast, a few one armed bandits on my hit list as well.

Would love to get a collection of Arp galaxies together, interacting galaxies are very cool.
ESO 510-G13 the warped edge-on spiral is another I'd like to have, smaller & fainter than 7309 it would never be a masterpiece even at 2.4m FL in perfect seeing but would like to get it anyway.

I guess it's just the attraction to the more unusual, less often seen or imaged stuff...bit like me really.

alan meehan (Alan) · #9 27-06-2010, 07:37 AM

Nice shot Justin its great when you can image some of these faint galaxies its like a new discovery,there seems to be more galaxies in the b/g as well.
thanks for sharing
AL

Hagar (Doug) · #10 28-06-2010, 11:13 AM

Very nice Justin , Love those siral arms. This would be an interesting target with lots of Focal length.

JD2439975 (Justin) · #11 28-06-2010, 04:03 PM

Quote:

Originally Posted by alan meehan

Nice shot Justin its great when you can image some of these faint galaxies its like a new discovery,there seems to be more galaxies in the b/g as well.
thanks for sharing
AL

Thanks Alan, most shots I've seen of this one are older, grainy monochromes, really wanted to see it in colour...near enough to a new discovery.

Quote:

Originally Posted by Hagar

Very nice Justin , Love those siral arms. This would be an interesting target with lots of Focal length.

Eww yeah, thought about barlowing it to 2400mm FL...but 4 times the exposure for the same photons/pixel had me running scared.

Ric · #12 28-06-2010, 04:14 PM

A lovely widefield capture Justin.

"A galaxy far far away" is the impression it gives me.

Cheers

Paul Haese · #13 28-06-2010, 09:45 PM

There are some nice quirky images popping up this week. I like this galaxy. Perhaps some more time on the capture side to sort some noise, but overall a nice capture.

JD2439975 (Justin) · #14 29-06-2010, 01:54 AM

Quote:

Originally Posted by Ric

A lovely widefield capture Justin.

"A galaxy far far away" is the impression it gives me.

Cheers

From what I can work out about 180 Mlys away Ric, far enough to be a faint little bugger.

Quote:

Originally Posted by Paul Haese

There are some nice quirky images popping up this week. I like this galaxy. Perhaps some more time on the capture side to sort some noise, but overall a nice capture.

Thanks Paul, it does have a certain appeal to it this one.
More time with flats taken is on the cards if this cloud ever goes away.