SL 17 lies very close to Gum55 and The Dark Tower. It is a dark nebula which is surrounded by an area of hydrogen alpha. Located in the constellation of Scorpius, it can be found at co-ordinates of RA 16hr 54m 01s and Dec -43 36' 17".
The image contains nearly 21 hours of data.
Ha 12.25 hours
Red 3 hours
Green 2.83 hours
Blue 2.66 hours
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