Cass-A: a difficult target from the North and impossible from the south

[ptc]

I took this from my backyard in 2007. It was a faint bugger that seemingly took forever to capture in tricolor emission line. I did this at full resolution instead of binning 2x2 (which would have sped things up considerably). I just wanted it with as much detail as my system could supply

After 22 hours of exposure over a month roughly I decided to stop. I may shoot this one again from the ranch with the much better skies/seeing...

http://www.narrowbandimaging.com/3c461_cassA_mk1sn2_cm10_geg_cs4_s2h ao3_page.htm

[renormalised]

A great attempt at a very faint target:) Most guys I've seen capture this little beastie usually don't even attempt it with anything under a 20" scope. You'd probably do better under darker skies, but it'll still be faint. From where I live in Oz, I can see Cassiopeia, but I still wouldn't attempt this fella...too low down.

[sjastro]

Thanks for showing a very obscure object.

Is this a SNR?

Regards

Steven

[renormalised]

Cas A, yes.

[sjastro]

Thanks.

That reminds me of SN1006.

Apparently part of SN1006 still emits photons in the optical range.
I've been intending to image it as challenge.:)

Steven

[multiweb]

Here (http://www.youtube.com/watch?v=ZOsRK1ZxFZs)it is. :thumbsup:

[renormalised]

Probably from decay products in the remnant.

[renormalised]

Nice video, Marc. You wouldn't want to know but one of these EU twits made comment there!!!!. They're like rabbits....everywhere.

[multiweb]

Don't you worry I got the domestos handy just in case. :P

[seeker372011]

Oh Hi, Richard, good to see you posting your leading edge stuff here in Ice In Space


those additional 5 hours seemed to add quite a bit didn't they
Narayan

[ptc]

Well thanks Narayan. You just cannot beat adding exposure time, especially if the seeing is good.

As I said earlier I'd prefer to spend three hours processing a week's worth of data than to spend a week processing three hours worth of data...:D