Narrowband NGC 3293 - The Gem Cluster (Rolf Olsen)

Celestial hemisphere: Southern · Constellation: Carina (Car) · Contains: HD91572 · HD91619 · HD91824 · HD91943 · HD91969 · HD91983 · HD92007 · HD92024 · HD92044 · HD92121 · HD92313 · NGC 3293

Image of the day 06/04/2024

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Narrowband NGC 3293 - The Gem Cluster

Link: https://www.rolfolsenastrophotography.com/Astrophotography/Star-Clusters/i-7sfjkps

Image of the day 06/04/2024

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Narrowband NGC 3293 - The Gem Cluster

Link: https://www.rolfolsenastrophotography.com/Astrophotography/Star-Clusters/i-7sfjkps

NGC 3293, often referred to as the Gem Cluster, is a spectacular bright open star cluster located in the constellation of Carina. In this narrowband bicolour image the delicate nebulosity across the entire background really stands out.
It is one of the Southern Sky's finest binocular objects and consists of nearly one hundred stars huddled together in a tight group, with a contrasting bright red supergiant near it's centre - similar in appearance to Kappa Crucis in the Jewel Box Cluster.
Floating against a colourful backdrop of Milky Way stars and red Hydrogen emission, the cluster is also surrounded by a delicate faint blue haze visible in broadband images.
The cluster was discovered by Abbé Nicolas Louis de La Caille in 1752 during his expedition to the Cape of Good Hope in South Africa.

Image details:
Date: April - May 2022<br>
Exposure: H-Alpha OIII: 405:540 mins, total 15 hours 45 mins @ -25C
Telescope: Homebuilt 12.5" f/4 Serrurier Truss Newtonian
Camera: QSI 683wsg with Lodestar guider
Filters: Astrodon 3nm Ha OIII
Taken from my observatory in Auckland, New Zealand

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Status	Advanced success
Started	...
Astrometry.net job	9903660
PixInsight job	AWQV84FI1A4KJMX98E4Z4G2QPARQYYJR
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	10h35m48s.711
RA (top/left)	10h38m22s.500
RA (top/right)	10h33m03s.692
RA (bottom/right)	10h33m13s.339
RA (bottom/left)	10h38m36s.208

Dec (center)	-58°13′27″.10
Dec (top/left)	-57°56′25″.40
Dec (top/right)	-57°58′29″.78
Dec (bottom/right)	-58°30′16″.78
Dec (bottom/left)	-58°28′10″.66

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Image of the day 06/04/2024

Narrowband NGC 3293 - The Gem Cluster

Image of the day 06/04/2024

Narrowband NGC 3293 - The Gem Cluster

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Image of the day 06/04/2024

Narrowband NGC 3293 - The Gem Cluster

Image of the day 06/04/2024

Narrowband NGC 3293 - The Gem Cluster

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