NGC 6939 nebula in Halpha
NGC 6939 nebula in Halpha |
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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: | 2005-10-11/12 | |
| Location: | Schlierbach / Austria (400m) | |
| Telescope: | TeleVue NP101 (4" Apo f=540mm) | |
| Camera: | ST2000XM with CFW8 and Astronomik Halpha (13 nm) | |
| Binning: | Halpha 1x1 | |
| Exposure time: | 15 x 20 min | |
| Exposure time total: | 5 h | |
| Notes: |
nebula near NGC6939 is very faint The nebula is better visible with a clear filter (see LRGB image)
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