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Sharpless catalog

Made of a list

The Sharpless catalog is a list of 313 H II 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 the second and final version was published by US astronomer Stewart Sharpless in 1959 with 312 objects. Sharpless also includes some planetary nebulae and supernova remnants, in addition to H II regions.

In 1953 Stewart Sharpless joined the staff of the United States Naval Observatory Flagstaff Station, where he surveyed and cataloged H II regions of the Milky Way using the images from the Palomar Sky Survey. From this work Sharpless published his catalog of H II regions in two editions: the first in 1953, with 142 nebulae; and the second and final edition in 1959, with 312 nebulae.

Sharpless coordinates are based on the star catalogs Bonner Durchmusterung (BD) and Cordoba Durchmusterung (CD), but the second release was adjusted to the 1900 epoch.

In the second release, some coordinates for southern hemisphere regions have an uncertainty over 1 minute of arc. This can make them difficult to find, so a revised catalog called BFS (Blitz, Fich and Stark) was released with 65 new regions and about 20 removals. Most of the removed items were the aforementioned nebula or remnants.

The 312 items in Sharpless sometimes overlap with the 110 Messier objects (M), 7,840 objects in the New General Catalogue (NGC), the Caldwell catalogue (itself a "best of" from other catalogues, with 109 items), and the RCW catalog. Contemporary catalogs were Gum and RCW, but they mainly covered the southern hemisphere.

Table

Table of second Sharpless (1958 version) catalog; click on image for image credit, most of which are either various amateur astronomers, the ESO, ESA, or NASA

Sh2 No.		common name		Images		Names and designations
Sh 2-1
Sh 2-3
Sh 2-4
Sh 2-5
Sh 2-6
Sh 2-8
Sh 2-9
Sh 2-10
Sh 2-11
Sh 2-12
Sh 2-17
Sh 2-20
Sh 2-21
Sh 2-25
Sh 2-27
Sh 2-29
Sh 2-30
Sh 2-31
Sh 2-34
Sh 2-37
Sh 2-41
Sh 2-42
Sh 2-44
Sh 2-45
Sh 2-46
Sh 2-49
Sh 2-54
Sh 2-64
Sh 2-68
Sh 2-71
Sh 2-80
Sh 2-82
Sh 2-86
Sh 2-88
Sh 2-91
Sh 2-101
Sh 2-105
Sh 2-106
Sh 2-112
Sh 2-113
Sh 2-114
Sh 2-115
Sh 2-117
Sh 2-125
Sh 2-126
Sh 2-129
Sh 2-131
Sh 2-132
Sh 2-136
Sh 2-140
Sh 2-142
Sh 2-155
Sh 2-157
Sh 2-158
Sh 2-162
Sh 2-170
Sh 2-174
Sh 2-171
Sh 2-184
Sh 2-185
Sh 2-188
Sh 2-190
Sh 2-191
Sh 2-197
Sh 2-199
Sh 2-201
Sh 2-211, Sh 2-212
Sh 2-216
Sh 2-220
Sh 2-222
Sh 2-229
Sh 2-230
Sh 2-232
Sh 2-237
Sh 2-238
Sh 2-239
Sh 2-240
Sh 2-244
Sh 2-248
Sh 2-260
Sh 2-261
Sh 2-263
Sh 2-264
Sh 2-273
Sh 2-274
Sh 2-275
Sh 2-276
Sh 2-277
Sh 2-279
Sh 2-281
Sh 2-282
Sh 2-284
Sh 2-290
Sh 2-292
Sh 2-297
Sh 2-298
Sh 2-302
Sh 2-308
Sh 2-311
Sh 2-313

List

Sh 2-1
Sh 2-2
Sh 2-3
Sh 2-4
Sh 2-5
Sh 2-6
Sh 2-7
Sh 2-8
Sh 2-9
Sh 2-10
Sh 2-11
Sh 2-12
Sh 2-13
Sh 2-14
Sh 2-15
Sh 2-16
Sh 2-17
Sh 2-18
Sh 2-19
Sh 2-20
Sh 2-21
Sh 2-22
Sh 2-23
Sh 2-24
Sh 2-25
Sh 2-26
Sh 2-27
Sh 2-28
Sh 2-29
Sh 2-30
Sh 2-31
Sh 2-32
Sh 2-33
Sh 2-34
Sh 2-35
Sh 2-36
Sh 2-37
Sh 2-38
Sh 2-39
Sh 2-40
Sh 2-41
Sh 2-42
Sh 2-43
Sh 2-44
Sh 2-45
Sh 2-46
Sh 2-47
Sh 2-48
Sh 2-49
Sh 2-50
Sh 2-51
Sh 2-52
Sh 2-53
Sh 2-54
Sh 2-55
Sh 2-56
Sh 2-57
Sh 2-58
Sh 2-59
Sh 2-60
Sh 2-61
Sh 2-62
Sh 2-63
Sh 2-64
Sh 2-65
Sh 2-66
Sh 2-67
Sh 2-68
Sh 2-69
Sh 2-70
Sh 2-71
Sh 2-72
Sh 2-73
Sh 2-74
Sh 2-75
Sh 2-76
Sh 2-77
Sh 2-78
Sh 2-79
Sh 2-80
Sh 2-81
Sh 2-82
Sh 2-83
Sh 2-84
Sh 2-85
Sh 2-86
Sh 2-87
Sh 2-88
Sh 2-89
Sh 2-90
Sh 2-91
Sh 2-92
Sh 2-93
Sh 2-94
Sh 2-95
Sh 2-96
Sh 2-97
Sh 2-98
Sh 2-99
Sh 2-100
Sh 2-101
Sh 2-102
Sh 2-103
Sh 2-104
Sh 2-105
Sh 2-106
Sh 2-107
Sh 2-108
Sh 2-109
Sh 2-110
Sh 2-111
Sh 2-112
Sh 2-113
Sh 2-114
Sh 2-115
Sh 2-116
Sh 2-117
Sh 2-118
Sh 2-119
Sh 2-120
Sh 2-121
Sh 2-122
Sh 2-123
Sh 2-124
Sh 2-125
Sh 2-126
Sh 2-127
Sh 2-128
Sh 2-129
Sh 2-130
Sh 2-131
Sh 2-132
Sh 2-133
Sh 2-134
Sh 2-135
Sh 2-136
Sh 2-137
Sh 2-138
Sh 2-139
Sh 2-140
Sh 2-141
Sh 2-142
Sh 2-143
Sh 2-144
Sh 2-145
Sh 2-146
Sh 2-147
Sh 2-148
Sh 2-149
Sh 2-150
Sh 2-151
Sh 2-152
Sh 2-153
Sh 2-154
Sh 2-155
Sh 2-156
Sh 2-157
Sh 2-158
Sh 2-159
Sh 2-160
Sh 2-161
Sh 2-162
Sh 2-163
Sh 2-164
Sh 2-165
Sh 2-166
Sh 2-167
Sh 2-168
Sh 2-169
Sh 2-170
Sh 2-171
Sh 2-172
Sh 2-173
Sh 2-174
Sh 2-175
Sh 2-176
Sh 2-177
Sh 2-178
Sh 2-179
Sh 2-180
Sh 2-181
Sh 2-182
Sh 2-183
Sh 2-184
Sh 2-185
Sh 2-186
Sh 2-187
Sh 2-188
Sh 2-189
Sh 2-190
Sh 2-191
Sh 2-192
Sh 2-193
Sh 2-194
Sh 2-195
Sh 2-196
Sh 2-197
Sh 2-198
Sh 2-199
Sh 2-200
Sh 2-201
Sh 2-202
Sh 2-203
Sh 2-204
Sh 2-205
Sh 2-206
Sh 2-207
Sh 2-208
Sh 2-209
Sh 2-210
Sh 2-211
Sh 2-212
Sh 2-213
Sh 2-214
Sh 2-215
Sh 2-216
Sh 2-217
Sh 2-218
Sh 2-219
Sh 2-220
Sh 2-221
Sh 2-222
Sh 2-223
Sh 2-224
Sh 2-225
Sh 2-226
Sh 2-227
Sh 2-228
Sh 2-229
Sh 2-230
Sh 2-231
Sh 2-232
Sh 2-233
Sh 2-234
Sh 2-235
Sh 2-236
Sh 2-237
Sh 2-238
Sh 2-239
Sh 2-240
Sh 2-241
Sh 2-242
Sh 2-243
Sh 2-244
Sh 2-245
Sh 2-246
Sh 2-247
Sh 2-248
Sh 2-249
Sh 2-250
Sh 2-251
Sh 2-252
Sh 2-253
Sh 2-254
Sh 2-255
Sh 2-256
Sh 2-257
Sh 2-258
Sh 2-259
Sh 2-260
Sh 2-261
Sh 2-262
Sh 2-263
Sh 2-264
Sh 2-265
Sh 2-266
Sh 2-267
Sh 2-268
Sh 2-269
Sh 2-270
Sh 2-271
Sh 2-272
Sh 2-273
Sh 2-274
Sh 2-275
Sh 2-276
Sh 2-277
Sh 2-278
Sh 2-279
Sh 2-280
Sh 2-281
Sh 2-282
Sh 2-283
Sh 2-284
Sh 2-285
Sh 2-286
Sh 2-287
Sh 2-288
Sh 2-289
Sh 2-290
Sh 2-291
Sh 2-292
Sh 2-293
Sh 2-294
Sh 2-295
Sh 2-296
Sh 2-297
Sh 2-298
Sh 2-299
Sh 2-300
Sh 2-301
Sh 2-302
Sh 2-303
Sh 2-304
Sh 2-305
Sh 2-306
Sh 2-307
Sh 2-308
Sh 2-309
Sh 2-310
Sh 2-311
Sh 2-312
Sh 2-313

References

Stewart Sharpless, [http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1953ApJ...118..362S A Catalogue of Emission Nebulae Near the Galactic Plane], ''[[Astrophysical Journal]],'' vol. 118, p.362, 1953
Steven, Dick. (2002). "Sky and Ocean Joined: The [[United States Naval Observatory". [[Cambridge University Press]].
Stewart Sharpless, [http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1959ApJS....4..257S A Catalogue of H II Regions], ''Astrophysical Journal'' Supplement, vol. 4, p.257, 1959
[http://galaxymap.org/drupal/node/156 Galaxy Map – The Gum, RCW, Sharpless and BFS catalogs]

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