View Full Version here: : NGC6744 - Spiral Galaxy in Pavo
29-04-2012, 01:38 PM
Another clear night here last night, and with the gear already set up from the night before I decided it was time for a bit more of a challenge. This is my longest sequence of sub exposures yet: 41 x 8 min subs @ ISO800 of the spiral galaxy NGC6744 in Pavo. I've cropped the shot as i'm getting a red 'glow' around the edge of the full frame that i'm still trying to address. (see my other M83 thread from yesterday)
I've also included a further cropped enlargement which shows off a bit more of the detail.
A good start I think. Obviously need some more data to bring out those outer arms a bit better, although some careful processing magic would probably help too. If it's clear tonight i might have another go to add to the image dataset.
As always, comments/advice welcomed :)
30-04-2012, 10:31 AM
shot this one again last night. had planned for another 40 x 8min, but a combination of high cloud and dew cut to session to about 3 hours.
I've combined this with the subs i acquired the night before and re-stacked in DSS (another first for me - combining image data from several nights!).
This is the result. Because i had the extra 3 hours of data i didn't push this one quite so hard in the processing, so i think less noise and a more pleasing colour balance.
In total: 63 x 8 min subs @ ISO800
:hi: What do you think?
Nice effort at a less common object. :)
30-04-2012, 06:46 PM
Great shots Richard.
01-06-2012, 10:40 PM
Obtained a trial version of PixInsight a few days ago, and have been experimenting and learning by reprocessing some of my previous images. All I can say is *WOW* - what an awesome piece of software! Will definitely be buying the full version when the trial expires.
This is a reprocess of my NGC6744 data from late April. I've basically just followed Harry's newbie video tutorials, and this is what i've been able to produce - a HUGE DIFFERENCE. Really starts to give me an insight into what my imaging scope and DSLR is really capable of.
The first is the "full frame" (well actually after i cropped the edges of the full frame after stacking). The second is simply a crop of that first frame to 'zoom in' on the galaxy.
01-06-2012, 10:47 PM
Nice shootin' Richard :thumbsup:
02-06-2012, 03:21 PM
Richard, I really like this shot. The small, elongated line on the very tip on the bottom arm is that NGC 6744A? I couldn't find any reference to it in Burnham's.
02-06-2012, 04:48 PM
i'm don't know what that is called. however it is in Martin Pugh's shot here (http://www.martinpughastrophotography.id.a u/Galaxies/NGC6744.htm), so its meant to be there ;)
02-06-2012, 06:23 PM
Yes, it is NGC 6744A.
Nice shot, BTW Richard :thumbsup:
Beautiful Richard. I actually prefer your second set to your third. Nicely done.
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