The Medusa nebula or Abell21 in Gemini.
As far as planetary nebula go this is a large dim object. Originally classified as a supernova remnant until the early 80s when it was found to be a planetary. The blueish star near the center of the nebula is said to be the source of the emission.
To me it looks more like the Ghostrider than Medusa
I have two version to post of this,one is the Ha image which this objects is very rich with. The 2nd is a HaRGB.
Ha was 18x600s
RGB 15x300s each
Poor seeing for the Ha subs or I may have been able to get more detail.
Taken with my TMB115 and ST10xme.
1200gto guided with a remote guide head and e-finder.
First,here is the Ha image.
Thanks for looking,your comments always welcome.
Jason
As far as planetary nebula go this is a large dim object. Originally classified as a supernova remnant until the early 80s when it was found to be a planetary. The blueish star near the center of the nebula is said to be the source of the emission.
To me it looks more like the Ghostrider than Medusa
I have two version to post of this,one is the Ha image which this objects is very rich with. The 2nd is a HaRGB.
Ha was 18x600s
RGB 15x300s each
Poor seeing for the Ha subs or I may have been able to get more detail.
Taken with my TMB115 and ST10xme.
1200gto guided with a remote guide head and e-finder.
First,here is the Ha image.
Thanks for looking,your comments always welcome.
Jason
Attached Image:
