Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Roberto on Mar 03, 2019, 11:12:29

Title: Mandel-Wilson 2 - tough one for London
Post by: Roberto on Mar 03, 2019, 11:12:29
I managed to make the most of the good spell of weather we had a week ago and captured over 22 hours of data for this one. It's a very faint object to image from London as, although it sits high up in the North sky, it rides over the LP dome of London.
More information here:
https://www.astrobin.com/393499/C/?nc=user  - check the annotated version for all the background galaxies!

And image here:
(https://cdn.astrobin.com/thumbs/l12kbxIMNXUM_1824x0_wc4_Z8tK.jpg)
Title: Re: Mandel-Wilson 2 - tough one for London
Post by: JohnP on Mar 03, 2019, 12:42:09
Excellent again Roberto - love your processing technique. I'd be really interested to see what a single raw looks like?

Cheers,  John
Title: Re: Mandel-Wilson 2 - tough one for London
Post by: Roberto on Mar 03, 2019, 20:27:36
Hi John

Attached is a single shot of 600s, calibrated and stretched.   This is one of the cleanest sub-frames taken around culmination at 1AM.

Roberto

(https://cdn.astrobin.com/thumbs/KvAhK6JS-BJr_1824x0_wmhqkGbg.jpg)
Title: Re: Mandel-Wilson 2 - tough one for London
Post by: JohnP on Mar 03, 2019, 21:16:28
Thks Roberto. Amazing detail for a single 10 min sub. I love all the background galaxies. No idea what your workflow is from raw to finished image but really like your subtle processing technique.  Cheers,  john
Title: Re: Mandel-Wilson 2 - tough one for London
Post by: Roberto on Mar 04, 2019, 08:12:25
John
Thank you. When I first started using PixInsight to do all my processing, I followed the procedures set out in Warren Keller's online tutorials:  https://www.ip4ap.com/index.htm
I think he's added even more since and there are other sources such as Adam Block's.
Roberto
Title: Re: Mandel-Wilson 2 - tough one for London
Post by: MarkS on Mar 04, 2019, 23:08:40
A tough one for London.  Now that's an understatement! I think you've done an excellent job there.

You have certainly earned my respect by imaging interstellar dust from the London suburbs!!

Mark
Title: Re: Mandel-Wilson 2 - tough one for London
Post by: Roberto on Mar 05, 2019, 05:42:38
Thank you Mark! Much obliged  :D
Title: Re: Mandel-Wilson 2 - tough one for London
Post by: RobertM on Mar 08, 2019, 22:28:14
Sorry for the late reply.  I've seen this image earlier but thought it deserved more time to fully appreciate the detail.  It's a superb result from anywhere let alone a London suburb !  As well as the dust there are all those groups of background galaxies.  22 hours is a lot of exposure but it's needed with our skies, I think that's three times longer than I've ever done.  Voyager is certainly giving you some excellent data to work with and the processing is nice and subtle, I like it a lot.

Robert
Title: Re: Mandel-Wilson 2 - tough one for London
Post by: Roberto on Mar 09, 2019, 08:22:30
Thanks you Robert, very kind. I hope you have solved the driver issues and Voyager is working for you now.
Roberto