Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  NGC 7789
Caroline's Rose (NGC 7789), 


            Scott Davis
Caroline's Rose (NGC 7789)
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Caroline's Rose (NGC 7789)

Technical card

Imaging telescopes or lenses: Explore Scientific ED102 APO

Imaging cameras: Canon EOS Rebel T3i

Mounts: Celestron CGEM Hypertuned

Guiding telescopes or lenses: Orion ShortTube 80

Guiding cameras: Orion StarShoot Autoguider

Focal reducers: Astro-Tech AT2FF

Software: Sequence Generator Pro  ·  DeepSkyStacker  ·  Photoshop CS6  ·  Scott Davis AAPPS

Filters: One-Shot Color

Accessory: Robofocus

Dates:Oct. 18, 2014

Frames:One-Shot Color: 36x150" (1h 30') ISO1600

Integration: 1h 30'

Darks: ~25

Flats: ~40

Flat darks: ~40

Bias: ~40

Avg. Moon age: 24.55 days

Avg. Moon phase: 25.57%

Bortle Dark-Sky Scale: 2.00

Basic astrometry details

Astrometry.net job: 393425

RA center: 23h 57' 24"

DEC center: +56° 42' 7"

Pixel scale: 2.175 arcsec/pixel

Orientation: -48.005 degrees

Field radius: 1.088 degrees

Resolution: 620x412

Locations: Big Stump, Kings Canyon National Park, CA, United States


NGC 7789 is a beautiful, dense open cluster in the constellation Cassiopeia. It was discovered by Caroline Herschel, sister of William Herschel, in 1783. It lies at a distance of 7,600 light years from Earth. Observers of this cluster are greatly benefited by using a large telescope, as it is fainter than some of the more well-known clusters.


Sky plot

Sky plot


Caroline's Rose (NGC 7789), 


            Scott Davis