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| User galleriesThis category contains albums that belong to Coppermine users. |
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| 132 files in 12 albums and 1 categories with 0 comments viewed 81,664 times |
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Venus_3sec_freehand.jpg562 viewsVenusMartin
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jewelbox.jpgJewelbox.2209 viewsThe Jewel Box (also known as NGC 4755, the Kappa Crucis Cluster and Caldwell 94) is an open cluster in the constellation of Crux. As Kappa Crucis, it has a Bayer designation despite the fact that it is a cluster rather than an individual star.
It is one of the finest open clusters discovered by Nicolas Louis de Lacaille when he was in South Africa during 1751–1752. This cluster is one of the youngest known, with an estimated age of only 7.1 million years. It has an apparent magnitude of 4.2, and is located 6,440 light years from Earth and contains around 100 stars.
This famous group of young bright stars was named the Jewel Box from its description by Sir John Herschel as "a casket of variously coloured precious stones," which refers to its appearance in the telescope. The bright orange star Kappa Crucis contrasts strongly against its predominantly blue, hot companions. Kappa Crucis is a very large (hence very luminous) young star in its red supergiant stage, which paradoxically indicates that its life is drawing to a close. The cluster looks like a star to the unaided eye and appears close to the easternmost star of the Southern Cross, (Beta Crucis), so is only visible from southern latitudes.Martin
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Lagoondone2Mb.jpgLagoon nebula743 viewsDone with the ED100 and Hutech FR/FF.Martin
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Eta-done2G.jpgEta Carinae guiding test with a OAG on the g11 and G2 controller.610 viewsLuminance 5 Minutes and RGB 200 Seconds eachMartin
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IMG_0509.jpg289 viewsNice view 2Martin
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Grasshopper.jpg474 viewsMartin
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IMG_0518.jpgnice view591 viewsnice viewMartinMay 21, 2016
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IMG_0517.jpgARB Kev662 viewsARB Kev.MartinMay 21, 2016
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IMG_0516.jpg330 viewsKev's CarMartinMay 21, 2016
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IMG_0515.jpg335 viewsJacki and carMartinMay 21, 2016
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IMG_0514.jpg336 viewsAlex's carMartinMay 21, 2016
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IMG_0513.jpg335 viewsScotty's carMartinMay 21, 2016
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IMG_0512.jpg347 viewsMark beside his carMartinMay 21, 2016
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IMG_0511.jpg333 viewsHang this in the ceiling and Mark will be out of business :PMartinMay 21, 2016
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