Galaxies in Grus

Heian (Mark) · #1 25-10-2006, 02:42 PM

Hi,
thought I'd share an image that I captured on Sat night from Wollongong. It's a galaxy grouping in Grus. Image taken on a Meade DSI with 135mm SLR lens, 10x180 sec exposures, LPR filter included, stacked in Registax and adjusted in GIMP.
Was meant to be colour but found the red channel overwhelmed green + blue channels (no IR filter), converted to a greyscale and the image appeared to show greater detail. The galaxies are:
NGC7552 mag 10.6
NGC7582 mag 10.6
NGC7599 mag 11.5
NGC7590 mag 11.5
NGC7632 mag 12.1
Info + chart from Skymap Pro.

cheers
Mark

rogerg (Roger) · #2 25-10-2006, 02:53 PM

I like it.

It'd be nice to have the galaxies labelled on the image, that would help a lot... next time maybe ?..

I like these fields of many galaxies. I was going to start on a new field of PGC galaxies last night but got side tracked by NGC 289 instead.

A shame about the little bit of guiding error but I think it's small enough to not detract from the image much.

Roger.

Heian (Mark) · #3 25-10-2006, 03:49 PM

Roger,
quite right, I should have labelled them. Hope this editted version is a bit clearer.

Mark

rogerg (Roger) · #4 25-10-2006, 04:44 PM

That's lots better

thierry · #5 25-10-2006, 11:24 PM

hello,there is world,bravo

Gama · #6 26-10-2006, 02:03 AM

I also got hooked on groups of galaxies recently, plus i really wanted to image galaxies that are normally too small or faint for most scopes to even resolve.

So i opted to give it a go and was very suprised just how well i did in the end given the short exposures.

I already have uploaded one image (NGC7549) on another thread, but i'll re upload it here as well, plus a couple of others i took that night too.

NGC-782 is 13th Mag and 2.1 arc minutes diameter

NGC-7546 is 15th Mag and 1 arc min diameter (face on spiral) not sure of other 2.

NGC7549 is 14th Mag and 2.9 arc min diameter (Barred spiral), the spiral edge on is 15th mag and 1.3 arc min, and the round galaxy is 14th Mag at 1.4 arc min.
Exposures were between 6 and 10 minutes, scope was a 22" f4.5, CCD was a SXV-H9.

Endless swarms of galaxies, just blows your mind.....

strongmanmike (Michael) · #7 26-10-2006, 07:16 AM

Nice work Gama, I enjoyed them.

I love galaxies too, just as well too becuase the FOV of my SXV-H9 and AP152EDF is rather narrow so most nebulae are too big for the FOV

What focal length were they taken at? Are these full frame images?

Mike

Gama · #8 26-10-2006, 01:52 PM

The images are binned at 2x2 and just slightly croped, the focal length is 99" or 2515mm (22" f4.5).
So im in the same boat as far as FOV.