Gary Imm

GaryI

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A backyard amateur astrophotographer enjoying retirement with my wife on beautiful Lake Livingston in Onalaska, Texas, about 90 minutes north of Houston.

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Stewart Sharpless created the Sharpless catalog of HII regions (emission nebulae) in 1959. The list is intended to be comprehensive north of declination −27°. Almost every object on the list begins with the prefix Sh2, perhaps because the final list of 313 objects is his second catalog. There are two Sh1 objects which were not included in the updated Sh2 catalog because they were discovered not to be emission regions by that time, but I plan to include these two as well below as soon as I image them. The images below are sorted in order starting with Sh2-1, following the Sh1 images.