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Contains:  M 91, M91, NGC 4548
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M91, 



    
        

            Gary Imm
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M91

Technical card


Dates:June 23, 2017

Frames:
Blue: 20x60" (gain: 139.00) -15C bin 1x1
Green: 20x60" (gain: 139.00) -15C bin 1x1
Luminance: 60x60" (gain: 139.00) -15C bin 1x1
Red: 20x60" (gain: 139.00) -15C bin 1x1

Integration: 2.0 hours

Avg. Moon age: 28.81 days

Avg. Moon phase: 0.59%


Astrometry.net job: 3257679

RA center: 12h 35' 26"

DEC center: +14° 29' 55"

Pixel scale: 0.851 arcsec/pixel

Orientation: 151.744 degrees

Field radius: 0.358 degrees


Resolution: 2640x1485

Locations: Backyard (Mag 20.8 - New Moon), Onalaska, Texas, United States

Data source: Backyard

Description

This object is a delicately beautiful barred spiral galaxy located in the Virgo Cluster, just over 60 million light years from Earth. It is the faintest of all Messier objects. M91 is classified as an anemic galaxy, which is a spiral galaxy with very little gas and a low rate of star formation. It is home to about 400 billion stars. I think it looks like the Darth Vader TIE fighter from Star Wars.

Comments

Author

GaryI
Gary Imm
License: None (All rights reserved)
1040
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Sky plot

Sky plot

Histogram

M91, 



    
        

            Gary Imm

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The refractors!