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Rho Ophiuchus Area Emission & Reflection Nebulae with Star Clusters |
| Other Names/Objects | Rho Ophiuchus Reflection Nebula, M4 Globular Star Cluster |
|---|---|
| Optics | Canon EF 200mm f/2.8L II Lens at f/3.5 |
| Mount | Astro-Physics 900-GTO German Equatorial Go-To Mount |
| Camera | Canon EOS 60Da DSLR |
| Exposure | 70 minutes (14 x 5 minutes) at ISO 400 |
| Calibration | 15 darks | 20 flats | 0 bias |
| Air Temperature | 45°F |
| Accessories | Autoguided with Deep Sky Instruments RC10C and SBIG ST-i camera |
| Location | CaliforniaStars Observatory in Landers, California |
| Date | May 26, 2012 |
| Notes |
Processing: Canon EOS Utility for framing and capturing. Calibrate, align and combine in ImagesPlus v4.75. Curves, saturation, sharpen, crop, resize, and JPG compression in Photoshop CS4. Larger versions: 1800 x 2700 (~4.0 MB) |