B33 - The Horsehead Nebula in Ha
Dark nebula in Orion, with reflection nebula NGC 2023
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B33 - The Horsehead Nebula in Ha Dark nebula in Orion, with reflection nebula NGC 2023 |
| Optics | Celestron 80ED @ f/7.5, guided with an 8" LX200 Classic @ f/5.9 |
| Mount | LX200 |
| Camera | Starlight Xpress SXV-M7 |
| Filter | Astronomik 13nm Ha, IDAS LPR light pollution filter |
| Exposure | 360 min Ha - 12 min subs, over two nights |
| Processing | Acquired in AstroArt3, Deconvolution, DDP. , final work in Photoshop7 |
| Date | 02.07.06-02.08.06 |
| Location | Elk Grove, CA |
| Notes | The moon was 75% full, and appears to have affected the image, even with the Ha filter, as it was unusually noisy. In addition, the guiding performance was particularly poor, resulting in oval stars and a soft image. The stars were fixed with processing. Bad flexure was also apparent, with a shift of over 50 pixels from the 1st to the last image in a night. |