Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: MarkS on Apr 13, 2010, 06:19:54

Title: M101 Widefield from Riberac
Post by: MarkS on Apr 13, 2010, 06:19:54
Modified Canon 350D on Tak Epsilon 180ED (F2.8 with 500mm focal length) with 2" Baader IR/UV filter.
36 x 5min exposures at ISO 800
Stacked, asinh range compression, then scaled by 2/3 in IRIS
Date taken: 8 April 2010

Here's the cropped version:

(http://www.markshelley.co.uk/webdisk/takm101_08042010crop.jpg)

Here's the full version
http://www.markshelley.co.uk/webdisk/takm101_08042010.jpg

Essentially it is the same image as this one from Sidcup: http://forum.orpington-astronomy.org.uk/index.php?topic=5930.0  
This time taken under the darker skies of Riberac

Mark
Title: Re: M101 Widefield from Riberac
Post by: Mac on Apr 13, 2010, 07:01:54
Nice image,
I like the colours in this one better then the one from Sidcup.

Mac.
Title: Re: M101 Widefield from Riberac
Post by: MarkS on Apr 13, 2010, 08:01:55
Quote from: Mac on Apr 13, 2010, 07:01:54
I like the colours in this one better then the one from Sidcup.

The Sidcup one used a CLS filter - it causes a strange colour cast.

Mark