|Rob Hawley's Pages||Almaden Observatory Main Page|
2011- February 2012
Sharpless 274 is a planetary nebula in
Gemini. It is cataloged also as Abell 21. It does not have either an
NGC or IC number. According to Wikipedia
its common name is the Medusa Nebula and is a planetary nebula.
I began capturing data in the beginning of
December 2011 (mostly after 2AM PST). Initially I started imaging
this to give the scope something to do after it finished the Horsehead Mosaic. As I started
collecting data I came to decide that this was an interesting, if obscure,
object in its own right.
The images below show the object in the CFHT
and Hubble Palettes. The two images are the same data. The Hubble
image is remapped from the CFHT image.
Click on the images below for a full size
in Hubble Palette (SHO)
in CFHT palette (HOS)
Of course this is only what met the image quality standards. I
probably took between 10 and 20% more images than shown above. The
images were processed with PixInsight.
Click on the image below for a full size image
The nebula is marked
by the square above. It is located in Gemini about 1/2 between Leo and