| Object: | Galaxy M101 in Ursa Major |
| Date: | January and February 2004 (four nights) |
| Equipment: | TEC140 at F/7, HX916 CCD, G11 mount, ST-4 |
| Exposure: | L(R+Ha)GB
180:(45+120):45:45 minutes. L binned 1x1, R, G, B and Ha binned 2x2. H-a data was blended into the red channel using Photoshop's Lighten combine method (maximum pixel value) |
| Processing: | Photoshop, flats, no darks |
| Comments: | The
exposure was interrupted by clouds nearly every night it was attempted.
Some of the frames were shot through thin clouds. Click here for the full resolution image |
Copyright © 2004 Paul Kanevsky