Dates:May 29, 2020 , July 19, 2020 , July 23, 2020
Frames:
Astronomik Blue: 100x120" -20C bin 1x1
Astronomik Green: 103x120" -20C bin 1x1
Astronomik Red: 115x120" -20C bin 1x1
Integration: 10.6 hours
Darks: ~50
Flats: ~50
Bias: ~100
Avg. Moon age: 12.66 days
Avg. Moon phase: 18.16%
Bortle Dark-Sky Scale: 3.00
Astrometry.net job: 3872211
RA center: 16h 25' 16"
DEC center: -40° 40' 29"
Pixel scale: 1.646 arcsec/pixel
Orientation: -87.178 degrees
Field radius: 0.627 degrees
Resolution: 2236x1586
Locations: Glanmire Home Observatory, Bathurst, NSW, Australia
Data source: Backyard
A fine display and a nice mix of red giant (cool) stars and many blue/white (very hot) stars. Located in the constellation of Scorpius approximately 18,600 light years from Earth. The cluster consists of approximately 100 stars.
Positioned against the backdrop of the Milky Way, the cluster shares the field with a number of dark nebulae, clouds of dust blocking out the light from the stars behind. The contrasting star colours, dark dust lanes and busy star field makes for an interesting visual display.
Description: Small tweaks in Pixinsight to cut back black point and adjust star colours.
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