M20
Trifid Nebula and Open Cluster in Sagittarius
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| Other names: |
NGC 6514 |
| Optics: |
Deep Sky Instruments RC10C Ritchey-Chrétien at f/7.3 — photo of setup |
| Mount: |
Astro-Physics 900 GTO on ATS portable pier |
| Camera: |
Canon EOS 5D Mark II [ unmodified ] |
| Exposure: |
42 minutes [ 7 x 6 minutes ] at ISO 1600 |
| Accessories: |
Autoguided with Orion StarShoot Autoguider and Canon 200mm lens with 2x telextender |
| Location: |
Julian, CA [ Julian Starfest ] |
| Date |
August 7, 2010 |
| Notes: |
Processing: Image acquisition with Canon EOS Utility. Image calibration, align, and combine in ImagesPlus 3.75. Levels, curves, noise smoothing (Noel Carboni's PS Tools), crop, and resize in Photoshop.
10 darks. 15 flats. Ambient temperature was about 48°F during the imaging session.
Click the image for a larger version (1800 x 1200, ~1.4 MB).
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