Les Granges - Supernova remnant Simeis 147

[RobertM]

This is a very large and faint Supernova remnant on the Auriga/Taurus border.  It's my second attempt at this but I wasn't able to get sufficient quality sub-exposures as dawn was approaching.  My next attempt will be  4-5 hours exposure which should be enough even for South East London.  This was the only narrow band image I did at Les G.

Field of view: 5.3 x 4 degrees which makes it a larger angular diameter than the Cygnus loop.



Capture details:
Exposure: 5 x 600s
Filter: Baader Ha 7nm passband
Camera: Finger Lakes ML 8300 @-30C
Optics: Canon 200L lens@f/3.2
Conditions: Clear but dawn dawn light
Sky Magnitude: approx 5.5
Location: Les Granges, Haut Alps, Southern France
Date: 5,8/9/2010
Guiding: Lodestar + converted 50mm finder


TFL
Robert

[Rocket Pooch]

Its massive 

[Mike]

Looks like a ball of spider web. Lovely image. Would be fantastic if you could do some more exposures of this. It looks like it needs many hours of captures.

[MarkS]

Wow - that's a really cool object!

By Cygnus loop, do you mean the Veil Nebula complex?  Does it also have other pretty colours like the Veil does?

Mark

[RobertM]

Yes, I meant the Veil and I'm not sure it has any pretty colours.  Ha is faint enough, I've never seen it in tri-band so I don't know.

[mickw]

I'm not sure it has any pretty colours

Scroll to near the bottom of the images - interesting write up too
http://www.ing.iac.es/PR/last_img.html

[Fay]

I really like that Robert, did not know you had done that one. It has been on my to do list for ages

[MarkS]

Nice version of this on today's APOD (12 Feb 2011): http://apod.nasa.gov/apod/ap110212.html

[Fay]

I really like it, but would need a good DSC to have a chance

[RobertM]

That's one of the best if not the best I've seen of that.