Abell 61

Abell 61 is pretty faint and pretty ancient planetary nebula in Cygnus. It is located somewhere aroud 4,500 light years away and its age is estimated to 22,000 years. Central star apparent brightness ... Read More

WeBo1 and Mel15

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Do you remember december molecular trophies? There were hydrogen alpha only band of Melotte 15 open cluster in the middle of the Heart nebula IC1805. I collected some more – oxygen III band and ... Read More