Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Carole on May 17, 2019, 00:08:08

Title: Cat's Eye Nebula NGC6543
Post by: Carole on May 17, 2019, 00:08:08
Taken at Cairds on Sunday 12th May (1st quarter Moon)
Decided after processing the first night's data that it was pretty futile doing a 2nd night as I obviously didn't have a long enough focal length for the target, so only did the one night on it. 

Both short and long subs were taken for all filters due to the bright centre.
Ha 11 x 600
Oiii 6 x 600
Plus shorter subs of 30secs for both Ha and Oiii
RGB for stars 150 secs each 5 & 6 of each plus 30secs subs
Atik428EX, Skywatcher ED120 + FR x 0.8
HEQ5
Total imaging time amounts to 3 hours 45 mins

Processing was a real pain as all channels had to have short and long subs taken and combined due to the bright centre (the famous bit - just about got the rough shape of it and that is all).

Combined as HOORGB

(https://cdn.astrobin.com/thumbs/dkXmy0QkKgE2_1824x0_wmhqkGbg.jpg)

Version 2
Managed to extract a tiny bit more detail from the planetary Nebula in the middle.  Difficult to get anything at all at this focal length and resolution:
(https://cdn.astrobin.com/thumbs/ERsIerH7ipT0_1824x0_wmhqkGbg.jpg)

Full resolution:
https://www.astrobin.com/full/406203/C/?real=&mod=
Title: Re: Cat's Eye Nebula NGC6543
Post by: Apophis on May 17, 2019, 09:43:31
like it, not seen that one before, nice detail,
Roger
Title: Re: Cat's Eye Nebula NGC6543
Post by: Carole on May 17, 2019, 10:04:39
Yes it's not often done.  In the centre, there is a fabulous famous Hubble image, but few amateur scopes are able able to get that and even if they do it's a much smaller version of it.

This is what i am referring to and THIS IS A HUBBLE IMAGE of the centre of my image.

(https://www.nasa.gov/sites/default/files/styles/full_width_feature/public/thumbnails/image/64884main_image_feature_211_jwfull.jpg)

this is another version of it.
(https://upload.wikimedia.org/wikipedia/commons/thumb/5/5a/NGC6543.jpg/800px-NGC6543.jpg)

All I managed was a small white outline.  Lol

Carole

Title: Re: Cat's Eye Nebula NGC6543
Post by: The Thing on May 17, 2019, 17:41:20
Quote
All I managed with a small white outline.  Lol
But your not in space... Looks very nice.
Title: Re: Cat's Eye Nebula NGC6543
Post by: Carole on May 17, 2019, 20:18:55
Quote
But your not in space... Looks very nice.
Thanks, yes, makes a difference, plus much bigger scope of course.  Lol

Carole