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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: 2500x1665

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

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 job: 2753048

RA center: 359.370 degrees

DEC center: 56.698 degrees

Pixel scale: 2.931 arcsec/pixel

Orientation: 228.297 degrees

Field radius: 1.223 degrees

Locations: Backyard, Slough, Berkshire, United Kingdom

Data source: Backyard


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 :)



Vikas Sahota
License: None (All rights reserved)


  • Caroline's Rose Cluster NGC7789, 


            Vikas Sahota
  • Caroline's Rose Cluster NGC7789, 


            Vikas Sahota
  • Final
    Caroline's Rose Cluster NGC7789, 


            Vikas Sahota


improved my L and B subs and calibrated the star colours

Sky plot

Sky plot


Caroline's Rose Cluster NGC7789, 


            Vikas Sahota