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Contains:  M 3, NGC 5272
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Messier 3 Globular Cluster in Canes Venatici, 





    
        

            Harri Heikkinen
Messier 3 Globular Cluster in Canes Venatici

Messier 3 Globular Cluster in Canes Venatici

Technical card

Resolution: 1594x1164

Dates:March 29, 2019

Frames:
31x120" ISO1600
17x180" ISO1600
19x60" ISO1600

Integration: 2.2 hours

Darks: ~20

Flats: ~40

Flat darks: ~20

Bias: ~20

Avg. Moon age: 23.33 days

Avg. Moon phase: 37.51%

Bortle Dark-Sky Scale: 8.00

Temperature: 4.00

Astrometry.net job: 2613962

RA center: 205.547 degrees

DEC center: 28.380 degrees

Pixel scale: 1.969 arcsec/pixel

Orientation: 91.886 degrees

Field radius: 0.540 degrees

Locations: Backyard, Vantaa, Finland

Data source: Backyard

Description

Experimenting with new CLS filter on a brighter DSO target from heavily light polluted backyard. Surprisingly warm and clear night but with strong jet streams affecting seeing and wind gusts troubling autoguiding and ruining many subs. This CLS filter throws the color balance off big time making post processing a challenge. Will need to do few more iterations to get it better aligned.

Unmodified Canon 1100d ISO 1600 and Altair GPCAM2 224c guidecamera. Lights: 17x180" + 31x120" + 19x60s. Calibration: 40 flats, darks: 20x180" + 20x120" + 20x60", 20 dark flats, 20 bias.

Comments

Author

uluru
Harri Heikkinen
License: None (All rights reserved)
710
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Revisions

  • Messier 3 Globular Cluster in Canes Venatici, 





    
        

            Harri Heikkinen
    Original
  • Final
    Messier 3 Globular Cluster in Canes Venatici, 





    
        

            Harri Heikkinen
    B

Sky plot

Sky plot

Histogram

Messier 3 Globular Cluster in Canes Venatici, 





    
        

            Harri Heikkinen