[back] NGC 4755 (Jewel Box / Schmuckkästchen) in Crux [NED]

Type I3r




(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

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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