AMATEUR ASTRONOMY PAGES
Javier Gómez Laina                                                
M101 in Ursa Maior
(click on image for a full resolution M101 wide field  -  438 Kb)


            

Object:             M101 -  The Pinwheel galaxy    
Telescope:       COMELLAS-2  telescope (250 f/4.8 Newton). Lumicon coma corrector, LPS filter.
Camera:           Canon 350d  modified (infrared filter removed)
Exposures:       101 x 300"   (8:25 total exposure)  ISO 400                       
Resolution:       1.1"/pixel   (largest size)
Date:                14 & 16 May 2007
Guiding:           MX716 on Off-Axis Guider 
 

Processing:

Bias, Darks & Flat calibration
SDMask combining
Dynamic Background Extraction (sky gradient correction)
Histogram and Curves adjust


Software:
ImagesPlus, PixInSight, PhotoShop.