[back] M 91 in Coma Berenice [NED]
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Type SBb, distance ~ 18Mpc/60MLy. |
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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 3:00 |
| Exposure time: | L: 12x300 sec. 1x1 bin, R,G,B: 4x300 sec.3x3 bin |
| Exposure date: | May 13th, 2004 |
| 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): | 2.1" |
| Photographer: | Rainer Sparenberg, Stefan Binnewies, Volker Robering |
| Remarks: | M91 is the prototype of a SBb spiral with bright bars and dim arms of the "Grand Design Type" |
| Bemerkungen: | M91 ist der Prototyp einer SBb-Spirale mit hellem Balken und schwachen Armen vom „Grand Design-Typ“ |
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