Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Carole on Dec 11, 2018, 21:37:02

Title: Witch Head nebula - experiment
Post by: Carole on Dec 11, 2018, 21:37:02
I started this last month, but my FOV is too small (one of the reasons was to see how much I could get in), and secondly to see how faint it was.

I was horrified that every single sub had satelittes (sometimes a whole bunch of them and some going in different directions, plus plane trails through them.  Not having enough data before the clouds rolled in meant I had to spend ages trying to clone them out, it also means that the image is quite noisy. 
I contacted Mark as I recall him saying he had a target with geostationery satellites in it, and as some of the trails were the same as last month, I think that must indeed be the case.

I have decided not to bother further with the CCD camera on this target as the FOV is too small.  If I ever get another opportunity, I think I will do it with my DSLR.

Anyway:

3 x 600 Lum
+ 7 x 300 binned x 2
RGB 2 each binned

Atik460EX & WOZS71
HEQ5

(https://cdn.astrobin.com/thumbs/QLeFVVJIEwiY_1824x0_wmhqkGbg.jpg)
Title: Re: Witch Head nebula - experiment
Post by: Roberto on Dec 12, 2018, 14:46:59
Carole
This must be a difficult target from anywhere in the UK.  My house sits to the south of my RoR so no luck for me on this one though I have always wanted to do it (my imaging FoV is 1.6 degrees square).

Roberto
Title: Re: Witch Head nebula - experiment
Post by: Carole on Dec 12, 2018, 16:18:01
Agree Roberto
Title: Re: Witch Head nebula - experiment
Post by: NoelC on Dec 13, 2018, 10:54:12
I think it's a good image.
I must have a look at this target to compare satellites!

Noel
Title: Re: Witch Head nebula - experiment
Post by: Carole on Dec 13, 2018, 11:48:37
QuoteI must have a look at this target to compare satellites!
It's a nightmare, I might even do a Mosaic of all the subs just to let you guys see how bad it was.

Carole
Title: Re: Witch Head nebula - experiment
Post by: Carole on Dec 13, 2018, 12:16:20
This is a selection of the fits files horribly stretched to show the satellites and planes trails.  There were none that had no satellites on, but I haven't put them all up as they don't all show until stacking and processing.

Click to enlarge.

(https://cdn.astrobin.com/thumbs/VjwXB0E8NHg6_620x0_wmhqkGbg.jpg)

Title: Re: Witch Head nebula - experiment
Post by: MarkS on Dec 15, 2018, 16:31:58
The image is looking good!

When I imaged the Witch Head I had the same problem with the geostationaries.   You can find my animation here:
http://forum.orpington-astronomy.org.uk/index.php?topic=10910

Mark