Blackie's Sharpless Images ngc2239  

 
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Blackie's "Shiftless" Images

The Sharpless catalog is a list of 313 HII regions (emission nebulae), intended to be comprehensive north of declination -27. (It does include some nebulae south of that declination as well.) The first edition was published in 1953 with 142 objects (Sh1) and second and final version (Sh2) was published by the astronomer Stewart Sharpless in 1959 with 313 objects.

Stewart Sharpless is an American astronomer who studied the structure of the Milky Way Galaxy and helped determine the shape of our galaxy. As a graduate student at Yerkes Observatory he worked under William Morgan with fellow graduate student Don Osterbrock. For a while Sharpless was at Mount Wilson Observatory where he worked on galaxy photography with Walter Baade and Edwin Hubble.

In 1953 Sharpless joined the staff of the United States Naval Observatory Flagstaff Station. While there he surveyed and cataloged H II regions of the Milky Way Galaxy.

Unlike the surveys done in the southern hemisphere, Sharpless did not create his own images but instead used existing red-filtered photographs taken using the 48 inch Schmidt telescope on Palomar Mountain, southeast of Los Angeles.

Sharpless revised his first catalog using additional plates (also acquired from the 48 inch Schmidt telescope on Palomar Mountain) produced for the National Geographic - Palomar Sky Atlas. He published his second and final catalog of 313 nebulae in 1959.

My imaging combination of a Nexstar 11GPS telescope enhanced with the Hyperstar 3 lens system, coupled with my modified Canon 1000xs camera, seems to be especially well equipped to shoot many of the brighter Sharpless objects. With the new addition of the "monofied" Nikon d90 and the Astronomik narrowband clip-filters, I am even more disposed to shoot Sharpless objects. I also like the Arizona connection based on the Flagstaff location of the United States Naval Observatory. Below, you can see my "Shiftless" images.



Click thumbnail to see larger image
M8.jpg
Sh 2-25
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Empty
M20.jpg
Sh 2-30
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Empty
M17.jpg
Sh 2-45
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Empty
M16.jpg
Sh 2-49
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Empty
Sh2-105
Sh 2-105
Sh2-108.jpg
Sh 2-108
C33.jpg
Sh 2-111
C34.jpg
Sh 2-111
C20.jpg
Sh 2-117
Sh2-117.jpg
Sh 2-117a
Sh2-125.jpg
Sh 2-125
NGC7380.jpg
Sh 2-142
C9.jpg
Sh 2-155
Sh2-162.jpg
Sh 2-162
NGC281.jpg
Sh 2-184
Sh2-190.jpg
Sh 2-190
Sh2-199.jpg
Sh 2-199
Sh2-220.jpg
Sh 2-220
Sh2-229.jpg
Sh 2-229
ThBlank.jpg
Empty
Sh2-244.jpg
Sh 2-231
Sh2-248.jpg
Sh 2-232
Sh2-275.jpg
Sh 2-235
Sh2-244.jpg
Sh 2-244
Sh2-248.jpg
Sh 2-248
Sh2-275.jpg
Sh 2-275
Sh2-277.jpg
Sh 2-277
Sh2-279.jpg
Sh 2-279
Sh2-281.jpg
Sh 2-281
Sh2-292.jpg
Sh 2-292
Sh2-296.jpg
Sh 2-296
Sh2-298.jpg
Sh 2-298




 




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