[back] LoTr 5 (PK 339.9+88.4) in Coma Berenices [NED]
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(c) 2009 All astro photo images are copyrighted. They may not be used or reproduced without explicit written permission from the authors.. |
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180" |
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About this Images / Über diese Bilder
| CCD: | SBIG STL-11000M |
| Image Type, Orientation: | (OIII+Ha+L)-(R+Ha)-(G+OIII)-(B+OIII) Composite, North is at 12:00h |
| Exposure time: |
L:8x900sec, OIII: 19x900sec, Ha (6 nm): 8x900sec, R, G, B: 3x900sec, all 1x1 bin |
| Exposure date: |
May 31st…June 29th, 2009 |
| Location: | Skinakas Observatory at Crete, Greece, remote-controlled from Much and Bad Arolsen/Germany |
| Filter: | SBIG 2" LRGB filter set for STL |
| Instrument: | Ganymed 60cm-Hypergraph in secondary focus (f=4938.3 mm) |
| Seeing (FWHM): | 1.6" |
| Photographer: | Stefan Binnewies, Josef Pöpsel |
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Remarks: |
Some of the OIII-images were captured during the moon was visible. During image editing of this very dim PN strong color noise was desturbing the image in all aspects. Stefan Heutz did the final smoothing of this noise as well as some color correction and is jointly responsible for the image impression. Informations of LoTr5 (in German) can be found here. |
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Bemerkungen: |
Ein Teil der OIII-Belichtungen
erfolgte während der Mond am Himmel stand. Bei der Bearbeitung dieses sehr
schwachen PN machte sich dann besonders störendes Farbrauschen in allen
Bereichen der Aufnahme bemerkbar. Stefan Heutz übernahm die abschließende
Glättung dieses Rauschens sowie einige Farbanpassungen und ist für den
Bildeindruck mit verantwortlich. |
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