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Bloating M1 and a PM star, 



    
        

            sky-watcher (johny)

Bloating M1 and a PM star

Technical card


Dates:Jan. 12, 2020

Frames: 150x60" (gain: 200.00) 5C bin 1x1

Integration: 2.5 hours

Darks: ~25

Avg. Moon age: 16.61 days

Avg. Moon phase: 96.20%


Basic astrometry details

Astrometry.net job: 3574982


Resolution: 1838x1232

Data source: Backyard

Description

We can see here how the Crab nebula is changing shape within 29 years.
In the top right of the image is also to seen the High Proper Motion star G 100-20
The image from 1991 is a DSS2 red plate
the image from 2020 is my own.

Comments

Author

sky-watcher
sky-watcher (johny)
License: None (All rights reserved)
3386
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Revisions

  • Bloating M1 and a PM star, 



    
        

            sky-watcher (johny)
    Original
  • Final
    Bloating M1 and a PM star, 



    
        

            sky-watcher (johny)
    B

B

Description: Negative image

Sky plot

Sky plot

Histogram

Bloating M1 and a PM star, 



    
        

            sky-watcher (johny)