GUM-15 / RCW 32 in Ha (UPDATED with more data)

[lazjen (Chris)]

Had some breaks within the clouds the other night, so I thought I would start on this target.

Some Ha data while the moon is up.



Larger version (looks better than this thumbnail), with details: https://astrob.in/l01v16/0/

[lazjen (Chris)]

Now with 4 days of data, cropped to remove integration borders:



Larger version on astrobin: https://astrob.in/l01v16/D/

Edit: Newer version: https://astrob.in/l01v16/E/

[Atmos (Colin)]

Given that it’s fairly faint sucker it’s coming up nicely, especially in the background

[lazjen (Chris)]

Yes, I'll get some more Ha when the Moon is up, but the combination of weather and its current position limits the amount per night I can get.

And then I'm also considering if I get some RGB to add to it... My current thinking is to grab some RGB before the Moon rises then switch to Ha until I can't image it any more. Going to have to do some calculations to see if I can get enough RGB that way to make it worthwhile - or just wait until it's back up again at a convenient time.

[gregbradley]

Looks good Chris. That's with a one shot colour cam as well. Nice.

Greg.

[lazjen (Chris)]

Originally Posted by gregbradley

Looks good Chris. That's with a one shot colour cam as well. Nice.

Greg.

Thanks, but I'm using a mono camera ASI1600MM-C - the "C" is cooled.

Looking at the weather forecasts and the stupid clouds coming over now, I may not get much more time on this target in the next week, so whatever I can get I'm going to add more Ha.

On a different note, I was comparing my Ha image to other GUM 15 images on astrobin, including Lee's recent one. I noticed something interesting - Lee's recent one and others (in colour) had 2 extra (smallish) stars in the main/centre dark structure that I don't have. At first I thought I must have wiped them out some how, but going back over the raw data they're definitely not there. Interesting.