M7 in Scorpius
M7 in Scorpius
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CLICK ON IMAGE FOR FULL SIZE VIEW (1800x1350) Scope: Zenithstar 66 mm refractor at f/4.6, Location: Tierra Del Sol (SDAA Club site), CA 6 July 2013 Camera: Artemis285 Exposure:
13 x 6 min (1x1 bin) exposure with UV/IR block, 8 x 2.5 min (2x2 bin) RGB
exposures.
Processing: Data
Collection - Artemis Capture (as FITs). Calibrated, stacked (Sigma
Combine), LRGB channel registration, equalization, central gradient removal -
Astroart. Curves, Levels, LRGB combine and finishing - Photoshop.
Final color Calibration with eXcalibrator. This image is a straightforward LRGB
combine with Luminance layering. Final Image size is
approximately 1800x1350. North is up in this image. This
is an image of a popular Southern Open
Cluster sometimes called Ptolemy's Cluster. It is relatively young at an
estimated 220 million years and relatively close at an estimated 800 light
years. You can also see the
Globular Cluster NGC 6453 as a golden smudge in the upper right. This image
replaces an earlier image now in the Archives
here. Horizontal FOV is about 101'. Image center is approximately - Equatorial 2000: RA: 17h 53m 54.0s Dec: -34°49'00"
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