Two faint large Planetary Nebulae. Abell 35 & 24.

[tilbrook@rbe.ne (Justin Tilbrook)]

Here's a couple of rarely imaged planetary nebulae.

Abell 35 in Hydra is 770 arc seconds making it around the same size as the helix but at magnitude 12.0 it is very faint, the Helix is 6.5.

Here's a link to Capella Observatory image, the best I was able to find.
http://www.capella-observatory.com/I...Ns/Abell35.htm

Here's another link about the shock wave in this nebula, fascinating!!
http://cosmoquest.org/forum/showthre...in-PN-abell-35

I had to experiment quite a bit to bring the nebula out, quite proud of what I've dug out! ( See Unprocessed image ) I think the striations in background of the the image is nebulosity and not colour noise.
Can't be sure as there's not many images of this one.

Abell 24 is in Canis Minor is unusually red, diameter 355 arc seconds and magnitude 13.6!!
Seemed to be much easier to process, even stands out more in unprocessed image. See below.

Here's a link to Misti mountain Observatories image.
http://www.mistisoftware.com/astrono...pk217p14v1.htm

Both final images are cropped.

8” F/4 astrograph , baader type 3 coma corrector,. HEQ Pro 5 mount, orion mini guider.
Camera.
Unmodded Cannon 1100D plus cooler box. 72 subs x 2 minutes at ISO 6400. Abell 35, 32 x 6400 and 12 x 5 minutes for Abell 24. Stacked in Deep Sky Stacker .Processed in Photoshop Cs2..

Cheers,

Justin.

[cometcatcher (Kevin)]

Beautiful shots Justin. The second one is very pretty.

[Paul Haese]

Those objects are very faint Justin. Quite a challenge by the looks. Well done for giving them a go. I think the Abell 24 image is the best of the two.

[strongmanmike (Michael)]

Always amazes me what some of you DSLR boys can pull out of your raw frames, that often look like little more than flats

Nice

Mike

[RickS (Rick)]

That's punching well above your weight, Justin

[tilbrook@rbe.ne (Justin Tilbrook)]

Originally Posted by cometcatcher

Beautiful shots Justin. The second one is very pretty.

Thanks Kevin!

Originally Posted by Paul Haese

Those objects are very faint Justin. Quite a challenge by the looks. Well done for giving them a go. I think the Abell 24 image is the best of the two.

Thanks Paul!

Yep, enjoy the challenge, always worth a go.

Originally Posted by strongmanmike

Always amazes me what some of you DSLR boys can pull out of your raw frames, that often look like little more than flats

Nice

Mike

Thanks Mike!

Really stretching to limit on some of these, which doesn't make for the best image, but it's fun trying.

Originally Posted by RickS

That's punching well above your weight, Justin

Thanks Rick!

There's still a lot of obscure stuff out there to image, I'm lucky with dark skies makes it worthwhile giving it a go.

Cheers,

Justin.

[Placidus (Mike and Trish)]

Fantastic. To capture it at all with a DSLR and short subs is amazing. I didn't fully understand the bit about reverse shock waves but it makes me want to learn more.

[tilbrook@rbe.ne (Justin Tilbrook)]

Originally Posted by Placidus

Fantastic. To capture it at all with a DSLR and short subs is amazing. I didn't fully understand the bit about reverse shock waves but it makes me want to learn more.

Thanks Mike!

I certainly don't understand the paper.

I'm just going the brief explanation and trying to visualize that.

Cheers,

Justin.

[Stevec35 (Steve)]

Constantly amazed at the quality of your DSLR images Justin. You are really stretching the boundaries with these two. The red DSS image for Abell 35 shows nothing!

Cheers

Steve

[tilbrook@rbe.ne (Justin Tilbrook)]

Originally Posted by Stevec35

Constantly amazed at the quality of your DSLR images Justin. You are really stretching the boundaries with these two. The red DSS image for Abell 35 shows nothing!

Cheers

Steve

Thanks Steve!

I'll have to check out the DSS images, most of the reference images I studied are from amateurs.

Cheers,

Justin.

[Ross G]

Great captures Justin.

Amazing work!

Ross.

[tilbrook@rbe.ne (Justin Tilbrook)]

Originally Posted by Ross G

Great captures Justin.

Amazing work!

Ross.

Thanks Ross!

Good fun trying the faint stuff.

Cheers,

Justin.