NGC 4945 and surrounds..

Astroman (Andrew Wall) · #1 21-05-2007, 05:55 PM

Here is a pretty average pic of NGC 4945 and surrounding area. 25 frames @ ISO400 each 100s, bias, darks and flats applied. I think I may have induced some unwanted noise as I forgot to take the flats when the camera was still attached so its orientation may be off slightly..unguided. I think atmospheric seeing had a lot to do with the average images I was getting, as we had storms later that night and the air was pretty unstable. Some shots may have had cloud in them too. I did however manage to pull in a few 15th mag galaxies around 4945 which is good. I would like to try a longer exposure of this object as I feel it has alot more to show us. Pic is 80% cropped due to stacking rubbish on edges. Taken with a canon 400D and Berts 80mm ED refractor @ 450mm FL.

http://southcelestialpole.org.au/for...ach=3981;image

h0ughy (David) · #2 21-05-2007, 06:55 PM

thats a great image Andrew, I like it

Ric · #3 21-05-2007, 11:23 PM

A very nice image Andrew, the galaxies against a starry backdrop looks fantastic.

Cheers

ballaratdragons (Ken) · #4 21-05-2007, 11:44 PM

Cooool. One of my favourite Galaxies

You have done a great job of imaging a wider field of 4945, Andrew. Top stuff

iceman (Mike) · #5 21-05-2007, 11:55 PM

I like these widefields, nice job.

It seems to be distinctly lacking in colour though - any reason why?

Astroman (Andrew Wall) · #6 22-05-2007, 06:18 AM

When I saturated it, it looked a pale pink in colour. I know this galaxy seems to chew up the blue as I have read in some write-ups on it. So I knocked it back so it wasn't quite as strong in colour. I also only did 100second exposures with very poor seeing conditions. I will try again when conditions get better, I will also autoguide on it and do longer exposures..

Garyh · #7 22-05-2007, 08:52 AM

Good widefield Andrew!, longer subs and some good seeing will bring out more detail for you..same up here, still bad seeing with this jetstream.
CS and GS

Tamtarn · #8 22-05-2007, 02:30 PM

Very nice widefield Andrew, well done.

ballaratdragons (Ken) · #9 22-05-2007, 02:50 PM

Quote:

Originally Posted by Astroman

When I saturated it, it looked a pale pink in colour. I know this galaxy seems to chew up the blue as I have read in some write-ups on it. So I knocked it back so it wasn't quite as strong in colour. I also only did 100second exposures with very poor seeing conditions. I will try again when conditions get better, I will also autoguide on it and do longer exposures..

Maybe it IS pink. My close-up of it came out Yellow/Brown.

I have no idea what colour it really is

mick pinner · #10 22-05-2007, 05:34 PM

very very nice Andrew.

Dr Nick (Nick) · #11 22-05-2007, 06:19 PM

You have some incredible detail in that shot!
Well done!

tornado33 · #12 23-05-2007, 12:00 PM

Yes great shot, a rich starfield there too
Scott

EzyStyles (Eric) · #13 24-05-2007, 09:37 AM

very nice andrew. looks 3d.