Hemisphere:  Southern  ·  Constellation: Crux (Cru)  ·  Contains:  Jewel Box  ·  NGC 4755  ·  The star κCru  ·  kap Cru  ·  kappa Cru cluster
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The Jewel Box, 



    
        

            Geoff
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The Jewel Box

Getting plate-solving status, please wait...
The Jewel Box, 



    
        

            Geoff
Powered byPixInsight

The Jewel Box

Imaging telescopes or lenses: Plane Wave Instruments CDK 12.5"

Imaging cameras: Finger Lakes Instruments Proline 16803

Mounts: AP900GTO

Guiding telescopes or lenses: Plane Wave Instruments CDK 12.5"

Guiding cameras: Starlight Xpress Lodestar guide camera

Software: PixInsight  ·  MaximDL

Filters: Astronomik RGB Series II


Dates:Jan. 26, 2020

Frames: 12x300" (1h)

Integration: 1h

Avg. Moon age: 1.50 days

Avg. Moon phase: 2.51%


RA center: 12h52m45s.40

DEC center: -60°2051.9

Pixel scale: 1.451 arcsec/pixel

Orientation: 178.520 degrees

Field radius: 0.337 degrees

More info:Open 


Resolution: 1224x1143

Locations: Wiruna Dark Sky Site, Ilford, NSW, Australia

Data source: Traveller

Description

The Jewel Box (Kappa Crucis Cluster or NGC 4755) is an open cluster in the constellation Crux, originally discovered by Nicolas Louis de Lacaille in 1751–1752. This cluster was later named the Jewel Box by John Herschel when he described its telescopic appearance as "...a superb piece of fancy jewellery". It is easily visible to the naked eye as a hazy star some 1.0° southeast of the first-magnitude star Mimosa (Beta Crucis).

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The Jewel Box, 



    
        

            Geoff