NGC 6946 + NGC 6939
NGC 6946 + NGC 6939 |
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Object data of NGC6946 |
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| Object type: | galaxy (SBc) | |
| Size: | 11.2' x 9.8' ( >16' in negative image) | |
| Magnitude: | 9.7 mag | |
| Constellation: | Cep / Cyg | |
| Distance: | 18 MLy | |
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Object data of NGC6939 |
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| Object type: | open cluster (II 1 r) | |
| Size: | 8' | |
| Magnitude: | 7.8 mag | |
| Constellation: | Cep | |
| Distance: | 6,000 Ly | |
Exposure data |
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| Date: | 2005-09-07 + 2005-09-08 | |
| Location: | Schlierbach / Austria (400m) | |
| Telescope: | TeleVue NP101 (4" Apo f=540mm) | |
| Camera: | ST2000XM with CFW8 and SBIG Filters | |
| Binning: | L 1x1 / RGB 2x2 | |
| Exposure time: | L 25x12m / R 6x10m / G 6x5m / B 6x5m | |
| Exposure time total: | L 5h / RGB 2 h | |
| Notes: |
nebula near NGC6939 (very good visible in negative image) The nebula is very faint in a deep Halpha image
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Below you find a 200% zoom of NGC6946. (The red HII regions of this barred spiral galaxy are clearly visible.) Supernova SN2004ET (1 year old) is indicated. |
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