Cometary Globule

[Paul Haese]

I have been collecting data on on CG4 for quite some time. It's in a great spot for me and I collected about 36 hours. 20 hours or so is the Ha data but it was quite noisy until I collected 17 or so hours.


The globule itself is located in Puppis at a distance of around 1300 light years. It is a star forming emission nebula and has the really nice ESO 257-19 galaxy in the field too.


Click here (http://paulhaese.net/CG4.html) to view the larger image. An annotated image is below the main image. Details of capture below those.

[Xeteth]

That's an awesome looking object, great job and dedication to collecting the vast amount of data for it!

Just wondering - is it a program you use to annotate the picture automatically, or do you do it yourself?

[Peter Ward]

Very smooth. Nicely done. :thumbsup:

[Andy01]

Looks good Paul, those star spikes have a wonderful prism effect - you’ve got the beast dialled in well!
From previous experience, there’s even more Ha there if you wanted to go deeper & push the background a bit more.
An awesome target indeed. :D

[topheart]

Top capture, nicely done!
Cheers,
Tim

[astroron]

Well done Paul,that is the best picture
of this object and it's accompanying galaxy
I have seen,except for David Malin's image taken
about 30 years ago with the AAT 3.9 meter at Siding Spring.
Splendid.
Cheers:thumbsup:

[strongmanmike]

Nice result Paul, the deep red Ha certainly looks bold but I recon this object is a little more "dusty" ie brown :confuse3: but regardless, it's such a cool object none the less and that galaxy getting eaten is a unique pairing in the sky really :thumbsup:

Mike

[Atmos]

Very nice Paul, it looks very similar to another object maybe 2 degrees from the Horsehead. Very smooth and well captured :thumbsup:

[gregbradley]

Nice shot Paul. Very smooth from the long exposure. You got the OOUK dialled in nicely.

Greg.

[Paul Haese]

Thanks everyone for the comments and observations.






David I used Pixinsight to do the annotation. There are a couple of routines to use in scripting to make it happen.



Thanks Ron, but there are some very nice images of this target. I am appreciative that you think so highly of this one though.



Thanks Mike, yes the dust is reasonably evident but might need more luminance to bring out further. I have collected some more subsequent to publishing this image hoping to get more the dust out. I wonder if the Ha is overwhelming the look a bit. I'll try to pick up some more data when the Moon heads back a bit.



Thanks Greg, there are still some minor tweaks that need to occur but this scope is working well. The other AG12 I have is still undergoing issues. I am getting some adapters made up to allow that scope to take the STXL 11002 for wider work and also have a threaded connection to the Aluma 694. I trialed using a parracor 2 with a compression ring and the Aluma, but the stars are all over the place. So I am going to try to get the corrector that came with the new AG12 to work with both cameras. In the mean time I am still going to have this AG12 working.

[astroron]

Thanks Ron, but there are some very nice images of this target. I am appreciative that you think so highly of this one though.

Hi Paul, I did say"That I have seen. ;)
It's a really cool shot none the less:cool::cool:
Cheers:thumbsup:

[Geoff45]

Beautiful colour with an interesting and very detailed field. Nicely done Paul

[codemonkey]

Solid effort, Paul, well done! I'm not one for seeing shapes in nebulae, but this one always reminds me of an Afghan dog.

[topheart]

A beautiful rendition!!
Cheers,
Tim

[Ryderscope]

A lovely display of the galaxy eating globule. The dust overlayed on the red makes it look like a fire storm rushing through space.

[Retrograde]

Wow what an amazing object. I love the contrast between the dust and Ha. Awesome job Paul. :thumbsup: