Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5457  ·  NGC 5477
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M101 in H alpha, 



    
        

            erdmanpe
M101 in H alpha
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M101 in H alpha

Getting plate-solving status, please wait...
M101 in H alpha, 



    
        

            erdmanpe
M101 in H alpha
Powered byPixInsight

M101 in H alpha

Equipment

Imaging Telescopes Or Lenses
TMB Optical 203mm f/9
Imaging Cameras
SBIG STL6303e
Mounts
Paramount ME
Filters
Barr Associates H alpha filter, 3nm
Software
MaximDL 5
Guiding Telescopes Or Lenses
TMB Optical 203mm f/9
Guiding Cameras
SBIG STL6303e

Acquisition details

Dates:
June 10, 2007
Frames:
16x1800" (8h)
Integration:
8h
Avg. Moon age:
24.33 days
Avg. Moon phase:
27.66%

Basic astrometry details

Astrometry.net job: 488615

RA center: 14h04m01s.2

DEC center: +54°2454

Pixel scale: 1.015 arcsec/pixel

Orientation: 86.927 degrees

Field radius: 0.512 degrees

Resolution: 3031x2003

Locations: driveway, Daytona Beach, FL, United States

Description

Taken in H alpha light, M101 is transformed into something resembling an Alaskan King Crab, or a giant space spider. The look is quite different than that undergone by M33 between luminance and H alpha images. Data acquired over multiple nights. Log stretch, no sharpening, in Maxim5.

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Histogram

M101 in H alpha, 



    
        

            erdmanpe