Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: MarkS on Oct 25, 2011, 23:22:57

Title: Orion Constellation
Post by: MarkS on Oct 25, 2011, 23:22:57
The Orion Constellation on Sunday night.  I piggybacked the Canon 400D on the Tak whilst shooting M42 - so it was a case of shoot one image, get another free!

35 x 5min at ISO 800.  H-alpha modified Canon 400D with Nikon 35mm lens at F/4 and CLS filter.

(http://www.markshelley.co.uk/Astronomy/2011/hhorion23102011small.jpg)

Larger version here:
http://www.markshelley.co.uk/Astronomy/2011/hhorion23102011.jpg

It's the best image I've ever obtained of Barnard's Loop so I'm pretty happy with this.  Again, this image was affected by passing high level thin cloud but not too badly.

Processing sequence was to stack the frames and apply arcsinh range  compression.  Then subtracted some nasty gradients.

Mark
Title: Re: Orion Constellation
Post by: Mac on Oct 25, 2011, 23:31:05
Very nice indeed.

Mac.
Title: Re: Orion Constellation
Post by: mickw on Oct 26, 2011, 00:03:38
Yes, very nice


You've come on a bit since this.....................
2008 (http://forum.orpington-astronomy.org.uk/index.php?topic=3016.msg12915#msg12915)
Title: Re: Orion Constellation
Post by: MarkS on Oct 26, 2011, 07:15:32
Quote from: mickw
You've come on a bit since this.....................
2008 (http://forum.orpington-astronomy.org.uk/index.php?topic=3016.msg12915#msg12915)

I was very pleased with that one at the time! 
If you look hard enough at it, you can just about see Barnard's Loop emerging.

Mark
Title: Re: Orion Constellation
Post by: RobertM on Oct 26, 2011, 08:51:47
Very nice Mark, that lens looks to be very good.  I can even just make out a faint witches head near Rigel.

Robert
Title: Re: Orion Constellation
Post by: JohnP on Oct 26, 2011, 09:58:56
Looks nice Mark - even see the 'itsy bitsy' horse-head. It is really improved over your earlier efforts & Bloop shows up really nice. My only comment would be colour on 3 main belt stars perhaps looks a tad 'turquoise'....

Great though - John
Title: Re: Orion Constellation
Post by: MarkS on Oct 26, 2011, 11:01:20
Quote from: RobertM
Very nice Mark, that lens looks to be very good.  I can even just make out a faint witches head near Rigel.

The lens is a really old one - I got it for about £30 I think, off eBay.

As you can see, it's passable at F/4 but it's not much good at max aperture F/2.8

Mark
Title: Re: Orion Constellation
Post by: MarkS on Oct 26, 2011, 11:05:23
Quote from: JohnP
Bloop shows up really nice.

What is Bloop?
Title: Re: Orion Constellation
Post by: JohnP on Oct 26, 2011, 11:14:30
You don't know what the Bloop is!!!!!!


Just me being lazy - Barnard's Loop.......  :lol: