[back] NGC 4755 (Jewel Box / Schmuckkästchen) in Crux [NED]
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Type I3r |
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60" |
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(c) 2004 All astro photo images are copyrighted. They may not be used or reproduced without explicit written permission from the authors.
About this Image / Über dieses Bild
| CCD: | ST10 XME |
| Image Type, Orientation: | LRGB Composite, North is at 8:00 |
| Exposure time: | L:20x3 sec, 1x1bin, R,G,B: 20x3 sec.each, 2x2 bin |
| Exposure date: | May 8th, 2004 (the 70th birthday of Stefan's mom! What else could he photograph that day ;-) |
| Location: | Capella Observatory at Amani Lodge, Kupferberg near Windhoek, Namibia |
| Filter: | FR03 + Astronomik Typ II LRGB filters |
| Instrument: | Ganymed 60cm-Hypergraph in secondary focus, f=4800 mm |
| Seeing (FWHM): | 2.0" |
| Photographer: | Rainer Sparenberg, Stefan Binnewies, Volker Robering |
| Remarks: | The jewel box near the southern cross contains about 50 stars mag 6...10. Even in binoculars this open cluster attracts attention by its "colored diamond" (spectral class M). |
| Bemerkungen: | Das Schmuckkästchen ganz in der Nähe des Kreuz des Südens enthält etwa 50 Sterne 6. bis 10. Größenklasse und fällt selbst im Feldstecher durch seinen "farbigen Diamanten" (Spektralklasse M) auf. |
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