Abell 39 - Planetary Nebula
| Object | Planetary nebula (Abell 39), in Hercules | |
| Telescope (Photo) | Celestron 11" EdgeHD SCT OTA with Optec/Lepus f/6.2 focal reducer on Losmandy G-11 Mount | |
| Telescope (Guiding) | Orion EON 80mm ED Refractor @ f/6.25 on Losmandy G11 Mount | |
| Camera (Photo) | SBIG ST8300M monochrome CCD | |
| Camera (Guiding) | Starlight Express Lodestar w/ PHD Guiding | |
| Exposure Detail |
LRGB combination: Luminance: excluded-average combination of 12 images ( binned 1x1) at 600 seconds Red: excluded-average combination of 10 images (binned 2x2) at 300 seconds Green: excluded-average combination of 10 images (binned 2x2) at 300 seconds Blue: excluded-average combination of 10 images (binned 2x2) at 300 seconds RAW file conversion, full calibration (flat, dark, bias, flat-dark), and initial image processing using ImagesPlus 4.0; final image processing using Photoshop CS3 |
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| Location | Cincinnati Astronomical Society's Dark-Sky Site (Adams County, Ohio) (N38.876, W83.464) | |
| Date | 08/26/11 - 08/27/11 | |
| Comments | Extremely faint and challenging object! |