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Contains:  NGC 7789
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Caroline's Rose Cluster NGC7789, 





    
        

            Vikas Sahota
Caroline's Rose Cluster NGC7789

Caroline's Rose Cluster NGC7789

Acquisition type: Electronically-Assisted Astronomy (EAA)

Technical card

Resolution: 4044x2695

Dates:June 2, 2019June 16, 2019June 17, 2019

Frames:
Baader B 2": 21x165" (gain: 381.00) -15C bin 1x1
Baader G 2": 13x135" (gain: 381.00) -15C bin 1x1
Skytech LPRO Max: 18x90" (gain: 381.00) -15C bin 1x1
Baader R 2": 6x360" (gain: 381.00) -15C bin 1x1

Integration: 2.5 hours

Darks: ~50

Flats: ~50

Bias: ~200

Avg. Moon age: 19.13 days

Avg. Moon phase: 66.74%

Bortle Dark-Sky Scale: 6.00

Astrometry.net job: 3048801

RA center: 359.456 degrees

DEC center: 56.745 degrees

Pixel scale: 1.393 arcsec/pixel

Orientation: 46.397 degrees

Field radius: 0.940 degrees

Locations: Backyard, Slough, Berkshire, United Kingdom

Data source: Backyard

Description

Carolines Rose Cluster imaged in LRGB with Altair's Hypercam 183m PROTEC. Short nights and plenty of clouds meant this took a couple of weeks to assemble a decent set of data.

This was discovered way back in 1783 by Caroline Herschel, sister and chief cataloguing wizard of William Herschel, and of course great astronomer in her own right. It must have been spotted on the 20ft reflector at the Herschell observatory right here in Slough :)

Comments

Author

gassman
Vikas Sahota
License: None (All rights reserved)
810
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Revisions

  • Caroline's Rose Cluster NGC7789, 





    
        

            Vikas Sahota
    Original
  • Caroline's Rose Cluster NGC7789, 





    
        

            Vikas Sahota
    C
  • Caroline's Rose Cluster NGC7789, 





    
        

            Vikas Sahota
    F
  • Final
    Caroline's Rose Cluster NGC7789, 





    
        

            Vikas Sahota
    G

F

improved my L and B subs and calibrated the star colours

G

I wanted to reprocess this early one as I was pretty sure I could improve this now. We had a clouple hours of clear yesterday so I did a speed run, grabbing 15s subs at high gain and stacking 100 frames for each filter. Combining that with earlier unity gain data, I came to this result.

Sky plot

Sky plot

Histogram

Caroline's Rose Cluster NGC7789, 





    
        

            Vikas Sahota