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

[ptc (Richard)]

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/3c4...2hao3_page.htm

[renormalised (Carl)]

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 (Carl)]

Originally Posted by sjastro

Thanks for showing a very obscure object.

Is this a SNR?

Regards

Steven

Cas A, yes.

[sjastro]

Originally Posted by renormalised

Cas A, yes.

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 (Marc)]

Originally Posted by renormalised

Cas A, yes.

Here it is.

[renormalised (Carl)]

Probably from decay products in the remnant.

[renormalised (Carl)]

Originally Posted by multiweb

Here it is.

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

[multiweb (Marc)]

Originally Posted by renormalised

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

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

[seeker372011 (Narayan)]

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 (Richard)]

Originally Posted by 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

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...