Managed to get the colour for the NGC 5044 galaxy group in southern Virgo ...although it was collected under a near full moon ....
If anyone has ever taken RGB data under a near full moon with the object less than 45deg away from the moon...you will know how hard this set was to process Actually, I had to add a 200mm cardboard extension screen to the front of the scope, (held on with cloths pegs ) to stop the moonlight, which was shining down the inside of the tube, from entering the corrector
This is quite a short exposure of just LHaRGB = 90 30 40 40 40min (Ha was collected to help reveal the HII regions in the spiral NGC 5054) and there is deffinitely galactic cirrus present in the field too but gradient removal techniques (BLOODY MOON!) have corrupted the subtle variations in the background so I have not tried to enhance it
Could have been deeper ie longer exposure but I am impatient, should not have collected RGB under a full moon but I am impatient and should have the scope under the Sirius Dome... but I am procrastinating...
Mike
Last edited by strongmanmike; 28-03-2013 at 04:36 PM.
Cool looking image for such a short amount of integration time. What are you sub exposure lengths? Are you still using 10 minutes? Any idea what your background ADU is on the subs?
Pavrotti - how could you forget him! But here's one of my favourite Italian artists with a tune that's just perfect for a rousing sing-a-long.... and no it's not Joe Dolce!! No, this song, Gli altri siamo noi, is one that I love to sing along to and the sentiments behind it are just as current today as they were back in the early 90's.
The title says it all and from your fantastic image it's pretty obvious we are!! I can just imagine it now, the hills of Wallaroo would definitely come alive with this blasting across the countryside...
Cool looking image for such a short amount of integration time. What are you sub exposure lengths? Are you still using 10 minutes? Any idea what your background ADU is on the subs?
Nice image.
I use only 5min subs actually, to avoid differential flexure (yeah I know, I should do something about it..I will, I will...). checking the peak of the histogram curve, ADU background on a single 5min sub is about 2500, on a 90 min stack of 5min subs about 500...?
Quote:
Originally Posted by multiweb
Pure eye candy. Lovely field and resolution.
Cheers Marc, sweet
Quote:
Originally Posted by cybereye
Pavrotti - how could you forget him! But here's one of my favourite Italian artists with a tune that's just perfect for a rousing sing-a-long.... and no it's not Joe Dolce!! No, this song, Gli altri siamo noi, is one that I love to sing along to and the sentiments behind it are just as current today as they were back in the early 90's.
The title says it all and from your fantastic image it's pretty obvious we are!! I can just imagine it now, the hills of Wallaroo would definitely come alive with this blasting across the countryside...
Cheers,
Mario
Yes, agree about the title...but sorry, Pav rules
Quote:
Originally Posted by marc4darkskies
Very nice Mike! I love fields like this - stretches the imagination huh?
Cheers, Marcus
Thanks Marcus, yes it is fields such as this that I really wanted to use this scope for, there was no chance under the blurry and heavily light polluted skies of Newcastle hence the monopoly on colourful emission nebulae with NB filters for over a year.
Quote:
Originally Posted by h0ughy
would have been more mike but your just teasing with the data. how much more would you have got in that shot if you went longer? its a travesty
Not that much really, there is some foreground galactic cirrus in there but although there was little wind and average seeing, the Lum was taken on a night of poor transparency and some high cloud and the RGB with a near full moob, so I couldn't do a good job of revealing the galactic cirrus. It's there but has been corrupted by gradient removal anmd high cloud, so I am not sure what is GC and what is redistributed background and or Earth cloud so I didn't try and enhance it.
Quote:
Originally Posted by alpal
Mike
Yes it's interesting to see a galaxy field as part of a super-structure & filaments in the Universe.
Note: your link to NGC 5054,
the image has a typo - it says NGC 5044.
This was the only other image I could find of NGC 5054:
...although it was collected under a near full moon 
....
Actually, I had to add a 200mm cardboard extension screen to the front of the scope, (held on with cloths pegs 
) to stop the moonlight, which was shining down the inside of the tube, from entering the corrector 
but I am procrastinating...
- i expect tripple the effort next time 8.9/10
I would have been much happier though 
back to the repro board to get me some neon, bah! 
so I didn't try and enhance it.
