NGC869 NGC884 Double Cluster in Perseus

            NGC 884 and NGC 869 – The Double Cluster
Sometimes when I look at the night sky my telescope is jammed full of stars. There are even stars between the stars.
The Double Cluster is the name for two open clusters of stars – NGC 869 and NGC 884 – located close together in the Perseus constellation. Also known as h Persei and chi Persei, the clusters both lie at an approximate distance of 7,600 light years from Earth and are about 12.8 million years old. Apparently the Double Cluster is visible even without binoculars in good conditions, but best observed with binoculars or small telescopes. Each cluster contains more than 300 blue-white supergiants.

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Telescope: William Optics Zenithstar 81 APO
Mount: SkyWatcher EQ6-R Pro
 
Controller: ZWO ASIAIR Plus
Main Camera: ZWO ASI533MC Pro at -10C
Filter: ZWO UV/IR Cut filter
Focal reducer: William Optics 0.8x 2.00"
Focuser: ZWO EAF
Guide Camera: ZWO ASI290MM Mini guidecam
Guide via: William Optics 50mm Guidescope
 
Stacked from:
Lights 58 at 60 seconds, gain 101, temp -10C
Darks 30 at 60 seconds, gain 101, temp -10C
Flat 30 at 100 ms, gain 101, temp -10C
Dark Flat 30 at  100 ms gain 101 temp -10C
 
Bortle 4 sky.
Integrated the saved frames in Astro Pixel Processor.
Adjusted in Photoshop CS4 and Topaz DeNoise AI
 


   

Taken on: October 11, 2022

Tags:

zwo

asiairplus

william

optics

Zenithstar81

skywatcher

eq6r-pro

astronomy

astrophotography

NGC869

NGC884

Double

Cluster

Perseus

h-persei

chi-persei « less

Sets appears in: • Astronomy • Star Clusters and Asterisms

Groups appears in: • astrometry • BBC Sky at Night and Stargazing Live

Camera: notAvailable, 4920 sec (more info) (hide info)

Camera:	notAvailable
Exposure Time:	4920
Color Space:	Uncalibrated
Software:	Adobe Photoshop CS4 Windows
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