Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  NGC 7789  ·  NGC7789
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NGC7789 Caroline’s Rose, 



    
        

            Sergiy_Vakulenko
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NGC7789 Caroline’s Rose

Getting plate-solving status, please wait...
NGC7789 Caroline’s Rose, 



    
        

            Sergiy_Vakulenko
Powered byPixInsight

NGC7789 Caroline’s Rose

Imaging telescopes or lenses: Skywatcher ED80

Imaging cameras: ATIK 383L+

Mounts: AZ-EQ6

Guiding cameras: Starlight Xpress Lodestar x2

Focal reducers: Skywatcher .85x Focal Reducer & Corrector

Software: Main Sequence Software SGPro  ·  Pixinsight

Filters: Baader Blue 36 mm  ·  Baader Red 36 mm  ·  Baader Green 36 mm  ·  Baader Luminance 36 mm

Accessory: DIY Focus controllers


Dates:Aug. 1, 2019

Frames:
Baader Blue 36 mm: 51x180" (2h 33') bin 1x1
Baader Green 36 mm: 30x180" (1h 30') bin 1x1
Baader Luminance 36 mm: 50x180" (2h 30') bin 1x1
Baader Red 36 mm: 30x180" (1h 30') bin 1x1

Integration: 8h 3'

Avg. Moon age: 0.44 days

Avg. Moon phase: 0.21%


Astrometry.net job: 3302971

RA center: 23h 57' 4"

DEC center: +56° 44' 3"

Pixel scale: 2.139 arcsec/pixel

Orientation: 94.636 degrees

Field radius: 0.841 degrees


Resolution: 2000x2000

Locations: Remote observatory, Kiev, Ukraine

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

Found among the rich starfields of the Milky Way, star cluster NGC 7789 lies about 8,000 light-years away toward the constellation Cassiopeia. A late 18th century deep sky discovery of astronomer Caroline Lucretia Herschel, the cluster is also known as Caroline's Rose. Its flowery visual appearance in small telescopes is created by the cluster's nestled complex of stars and voids. Now estimated to be 1.6 billion years young, the galactic or open cluster of stars also shows its age. All the stars in the cluster were likely born at the same time, but the brighter and more massive ones have more rapidly exhausted the hydrogen fuel in their cores. These have evolved from main sequence stars like the Sun into the many red giant stars shown with a yellowish cast in this lovely color composite. Using measured color and brightness, astronomers can model the mass and hence the age of the cluster stars just starting to "turn off" the main sequence and become red giants. Over 50 light-years across, Caroline's Rose spans about half a degree (the angular size of the Moon) near the center of the wide-field telescopic image.

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NGC7789 Caroline’s Rose, 



    
        

            Sergiy_Vakulenko