File:CTB1 Supernova Remnant in Cassiopeia.jpg
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English: CTB1 Supernova remnant in Cassiopeia
This is an extremely faint but rewarding target. For this image I used 12 hours of H alpha data (73x600 sec) and 2 hours RGB data (in 120 second subs) Esprit 100 f5.5 APO triplet/ QHY16200 @ -20C. Acquisition dates: 25,26,27,28 en 29 september 2017.Italiano: Il resto di supernova CTB 1 nella costellazione di Cassiopea. Sulla sinistra dell'immagine sono individuabili piuttosto facilmente tre ammassi aperti NGC 7790, NGC 7788 e, più centrale, King 12. Altri due ammassi aperti, Frolov 1 e Harvard 21, sono presenti nel campo di vista ma individuabili solo con difficoltà. La stella più luminosa presente nell'immagine, HD 224893, possiede una magnitudine apparente pari a 5,567. |
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| Source | Own work |
| Author | Keesscherer |
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| Annotations | This image is annotated: View the annotations at Commons |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 12:32, 22 May 2018 | | 3,973 × 2,337 (8.98 MB) | Keesscherer (talk | contribs) | User created page with UploadWizard |
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