Messier 23. NGC 6494

Click on the image for a full resolution version   See this image also on Instagram     Messier 23 is a pretty bright open cluster in the constellation Sagittarius. Located at about 2,000 light years from us, it contains about 200 stars (estimates range from 165 to 400 stars, but the most probable number … Continue reading Messier 23. NGC 6494