DEEP SKY OBSERVING
May 2009
by Mark Wagner

Targets are rated 1 to 4 for challenge, with 1 very easy, 4 most difficult. Targets are in a one hour window of R.A., and arranged north to south, for easy star hopping. Available as a Megastar .obs file or Excel spreadsheet.
Rating
Object Con Type Size Mag
RA
Dec
Other
4
Arp 109 Dra GX 0.5'x0.4' 15.2
15 48 07
69 28 11
UGC 10053
4
Arp 109 Dra GX 1.2'x0.7' 15.0
15 47 50
69 28 11
UGC 10053
22 f/4.1 (203, 293, 377 and 528x) Four galaxies were immediately seen arranged like an L. UGC 10053 appeared as a considerably faint round smudge with a slightly brighter center. It is about 45 across. A 15th magnitude double star lies about 1 WSW from the core. A blinding 7.5 magnitude star lies 4.5 due west and must be kept off the field. This galaxy marks the top of the L. MCG+12-15-18 shows a considerably faint, round smudge with a slightly brighter center. It is about the same size and brightness as UGC 10053, which lies 1.2 WNW. MCG+12-15-20 Considerably faint, 3:1 elongated even surface brightness patch. It is about 45 long with a position angle of 170 . An 11.1 magnitude star lies 38 SSW. This galaxy marks the corner of the L. MCG+12-15-18 lies 3.5 WNW and IC 1146 lies 3.8 SSW. IC 1146 is a considerably bright round patch with a stellar nucleus. This galaxy is about 90 across and lies on the end of the short arm of the L. A nice 13th and 15th magnitude double star lies 2.2 north. - Alvin Huey

4
HGC 078A Dra GX2 1.4'x0.6' 14.9B
15 48 17
68 13 14
UGC 10057
4
HGC 078B Dra GX2 0.7x0.2 14.9B
15 48 08
68 12 24
MCG +11-19-016
18" At 225x HCG 78A appeared faint, small, very elongated 3:1 E-W, 0.6'x0.2', with a low even surface brightness. Located 2.5' NW of a mag 13 star. Forms a close pair wth HCG 78B = MCG +11-19-016 just 1.2' SW. This faint member of HCG 78 appeared extremely small and round at first glance. In fact, all that I noticed initially was the fairly bright substellar nucleus, ~6" in diameter but with averted vision, small thin extensions were occasionally visible extending the size to 0.6'x0.2'. Although both galaxies are edge-ons, 78A has a low even surface brightness while 78B is sharply concentrated with extremely faint arms.

4
HGC 080C Dra GX3 0.4'x0.3' 16.1B
15 59 07
65 14 01
PGC 56572
4
HGC 080A Dra GX3 0.9'x0.2' 15.5B
15 59 19
65 13 58
CGCG 319-038
4
HGC 080B Dra GX3 0.5'x0.3' 16.4B
15 59 21
65 13 22
PGC 56590
18" HCG 80A = CGCG 319-038 is the brightest in a tight trio. At 223x, it appeared faint, small, very elongated 3:1 WSW-ENE, 0.6'x0.2', with a low even surface brightness. Collinear with a 30" pair of mag 14 stars about 2' S. HCG 80C is found 1.2' to the west and appeared extremely faint and small, round, just 6" diameter. The "C" component was noticed before "B" which required more effort to view. HCG 80B, a mere 30" to the south of HCG 80A was only glimpsed on several occasions as an extremely faint, extremely small knot, ~6" diameter. Back in '96, I could could almost hold this galaxy steadily with averted vision. Must by gettin' old.

2
N6015 Dra GX 5.4x2.1 11.1
15 51 25
62 18 35
 
13" (5/14/83): fairly faint, fairly large, elongated 2:1 SSW-NNE, 4.0'x1.8', diffuse, almost even surface brightness. Located 2.3' E of a mag 11 star. A mag 13.5 star is at the SSW end 1.9' from the center.

2
NGC5982 Dra GX 1.2x.8 10.9
15 38 39
59 21 21
 
18" (6/17/06): fairly bright, moderately large, slightly elongated, sharply concentrated with a high surface brightness core increasing to a stellar nucleus. The halo is much fainter and increases in size to ~1.5'x1.2'. Second of an excellent trio in a string with N5981 and N5985.

2
N5985 Dra GX 5.5x3.0 11.1
15 39 37
59 15 55
 
18" (6/17/06): fairly bright, large, elongated 3:2 ~N-S, the halo extends to ~4'x2.5'. Broadly concentrated to a brighter 40" core that increases slightly to the center. The halo is mottled and patchy giving a strong impression of spiral structure. This is largest and brightest overall of an excellent trio with N5981 and N5982.

4
Arp 188 Dra GX 3.6'x0.8' 14.4
16 06 03
55 25 29
UGC 10214
17.5": the "Tadpole Galaxy" appeared very faint, small, elongated ~E-W, 0.5'x0.3', low surface brightness. The previous month I mistook fainter MCG +09-26-052 located 12' NNW for this galaxy from the Sierra Buttes. In poorer conditions (haze from fires cut down transparency) from Fiddletown I couldn't see MCG +09-26-052.

3
Arp 2 Her GX 2.8'x2.2' 13.2
16 16 18
47 02 47
UGC 10310
22" Very faint, very low surface brightness, slightly elongated (5:4) patch with even surface brightness throughout. Neither structure nor nucleus spotted. PA = 160 and about 2.5 long. A 15th magnitude star lies about 45 off the NW edge and another 15th mag star lies about 2 off the SE edge. Increasing the magnification did not reveal any additional detail, but rather dimmed it even more.

3
Arp 90 Boo GX 1.7'x0.9' 12.2
15 26 07
41 40 39
NGC 5930
18" (5/3/08): fairly bright, moderately large, elongated 2:1 NNW-SSE, 1.3'x0.6'. Contains a small, bright round core. Interacting pair (Arp 90) with N5929 attached on the SW side of the core.

3
Arp 90 Boo GX 1.0'x0.9' 13.6
15 26 06
41 40 39
NGC 5929
18" (5/3/08): this is the SW member of a contact, interacting pair with brighter N5930. At 280x it appeared moderately bright, small, round, 25" diameter, high surface brightness, very small bright core, faint stellar nucleus. The pair is only 34" between centers and barely resolved.

3
N6058 Her PN 24"x21" 12.9
16 04 26
40 40 59
 
18" (7/20/06): picked up at 115x as a mag 13-13.5 star surrounded by a small 20" halo. Adding an OIII filter the halo brightened significantly and increased slightly in size. Nice view at 225x as the central star and halo are both prominently displayed. At this magnification, the halo was slightly elongated NNW-SSE, roughly 25"x20" in size. At 325x, the planetary was beautifully framed within an isosceles triangle that just fits within the high power field of view. Adding a UHC filter the halo appeared irregular in surface brightness and dimmed around the periphery, perhaps extending to 30".

4
AGC 2124 CrB GXCL 13.4' 15.6
15 45 00
36 03 00
UGC 10012
18" 7mm - UGC 10012 is dim but unquestionably visible. Picked up nearby galaxies, MAC 1545+3605, MAC 1545+3607B, MAC 1545+3611 - Mark Wagner

4
AGC 2162 CrB GXCL 56.0' 13.7
16 12 30
29 32 00
NGC 6086
18" 7mm - NGC 6085, NGC 6086, MCG 5-38-32, CGCG 167-55, CGCG 167-56, MCG 5-38-28, U10258, MCG 5-38-27, U10259, U10262. - Mark Wagner.

4
AGC 2079 CrB GXCL 17.9' 15.4
15 28 06
28 52 00
UGC 9861
18" 7mm - MGC 5-34-36, U9861, I4547, I4546, CGCG 165-55. - Mark Wagner.

3
Arp 220 Ser GX 1.5'x1.2' 13.1
15 34 57
23 30 11
IC 4553
3
Arp 220 Ser GX 1.8' 13.1
15 34 57
23 30 11
IC 4554
17.5" (4/7/89): fairly faint, almost round, even surface brightness. This is an interacting double system with an extremely faint "knot" or extension at the south end [elongated E-W on the POSS]. Considered the prototype of a megamaser with 98% of its emission in the infrared. IC 4554 is a separate galaxy 2.2' SE of the double system observed.

4
HGC 077C Ser GX3 0.6'x0.4' 16.5B
15 49 16
21 49 51
UGC 10049
4
HGC 077B Ser GX3 0.4'x0.2' 16.2B
15 49 16
21 49 25
UGC 10049
4
HGC 077A Ser GX3 1.4x0.6 13.7
15 49 16
21 49 10
UGC 10049
18" At 257x, HCG 77A and 77B appeared as a soft elongated patch, extended N-S, ~20"x10". With concentration the glow appeared clumpy and at moments A or B would resolve into two 10" knots, although it was very difficult to view both simultaneously. The brighter southern knot was HCG 77A and the tiny northern knot was 77B.

4
HGC 075A Ser GX5 0.4'x0.3' 15.0B
15 21 30
21 11 26
CGCG 135-050
4
HGC 075D Ser GX5 0.4'x0.2' 16.3
15 21 37
21 10 53
PGC 54824
4
HGC 075B Ser GX5 1.2'x0.4' 15.6
15 21 34
21 10 43
PGC 54818
4
HGC 075C Ser GX5 0.4'x0.3' 16.5B
15 21 38
21 10 37
PGC 54827
18" HCG 75A was missed by the great visual observers of the 19th century and first picked up from the Palomar Observatory Sky Survey plates in the early 1960's. CGCG 135-050 appeared faint, small, roundish though with an irregular outline, 20" diameter. Occasionally, a very faint stellar nucleus was visible with direct vision. Located 1' SW of a mag 12 star. This is a double system (with HCG 75B), although the companion was not seen with confidence. HCG 75C, situated 2' SE, appeared as a mag 15.5 star with no detectable size (only the stellar nucleus seen). It required averted to see this member clearly but the observation was easily repeatable. HCG 75D is a mere 26" NW and was only intermittently glimpsed as an extremely difficult, virutally stellar knot on line with 75C and the mag 12 star close north of the group.

4
HGC 079B Ser GX5 0.9'x0.4' 14.4B
15 59 14
20 46 00
NGC 6027E
4
HGC 079C Ser GX5 0.5'x0.3' 15.3
15 59 11
20 45 41
NGC 6027B
4
HGC 079E Ser GX5 0.3'x0.3' 16.5B
15 59 13
20 45 33
NGC 6027D
4
HGC 079A Ser GX5 0.9'x0.6' 14.8
15 59 11
20 45 15
NGC 6027A
4
HGC 079D Ser GX5 0.7'x0.2' 16.5
15 59 12
20 44 47
NGC 6027C
18" Seyfert's Sextet is arguably the quintessential Hickson group. Five or six galaxies crammed into a couple of arc minutes. I've returned to this object many times over the past 20 years and always resolve the three brightest components (a 4th component was barely visible in a 30-inch Starmaster last summer). HCG 79B is the brightest component of Seyfert's Sextet and at 257x appeared faint, very small, slightly elongated ~E-W, 15"x10", containing a faint stellar nucleus with direct vision. A mag 14.5 star lies 1' ESE and two additional mag 14.5 stars lie close SE. HCG 79C lies just 22" west of center and is the faintest in the resolved clump of three. It appeared extremely faint, round, 8"-10" diameter. Close south of this pair is HCG 79A, another small knot that appeared very faint, slightly elongated, 15"x10". To give credit where it's due, Seyfert's Sextet was actually discovered by Edouard Stephan in 1882. Carl Seyfert's name was later attached after a paper he authored in 1951 revealed this knot contained five or six galaxies crammed into a space smaller than our Milky Way. Although Stephan recorded this ultra-compact group as only a single object, his description "eF, vF* inv, 2 vF st nr" implies to me that he probably resolved three members though he mistook two of the nearly stellar galaxies for stars.

3
Arp 209 Her GX 0.9'x0.7' 13.0
16 05 12
20 32 31
NGC 6052
22" - This pair shows very interesting structure. It appeared as double galaxy; a thin streak and a small round galaxy connected on the west side of the thin streak. NGC 6052 a bright even surface brightness thin streak with no signs of a nucleus. It is about 60 long and positioned at 0 . Companion a considerably bright round even surface brightness with no brightening towards the center. About 20 in diameter. - Alvin Huey

4
Arp 218 Ser GX 0.9'x0.5' 15.4
15 53 32
18 36 38
CGCG 107-052

3
Arp 72 Ser GX 1.8'x0.9' 12.8
15 46 58
17 53 05
NGC 5996
17.5" (5/14/88): moderately bright, fairly large, elongated ~N-S, bright core, faint stellar nucleus. A mag 14 star lies 1.5' S. Forms a close, interacting pair (Arp 72) with N5994 1.5' SSW.

4
Arp 72 Ser GX 0.4' X0.2' 14.2
15 46 53
17 53 05
NGC 5994
17.5" (5/14/88): fainter member of an interacting system with N5996. Very faint, extremely small. Appears as a barely non-stellar knot just 1.5' SW of the center of N5996. A mag 14 star lies 1.3' SE.

4
Arp 272 Her GX 0.7'x0.4' 15.2
16 05 30
17 46 09
NGC 6054
17.5" (5/13/88): very faint, very small, slightly elongated. Located 1.0' NE of a mag 12.5 star. Member of Abell Galaxy Cluster 2151 with an extremely faint galaxy 1.5' W (MCG +03-41-099) and IC 1182 2.1' NNW.

3
Arp 71 Her GX 1.3'x0.3' 13.9
16 05 07
17 45 28
NGC 6045
17.5" (5/13/88): very faint, small, very elongated 4:1 WSW-ENE. Located in the core of Abell Galaxy Cluster 2151 between the N6040/6041/6042 trio to the W and N6050 3.8' E. This is a double system with a companion attached at the E end (not seen).

4
Arp 122 Her GX 0.8' 14.9
16 04 26
17 45 02
NGC 6040B
17.5" (5/13/88): very faint, very small, slightly elongated E-W. This is the fainter member of a double system attached at the SW end of N6040A. Located in the central core of Abell Galaxy Cluster 2151.

3
Arp 122 Her GX 1.4'x0.5' 13.6
16 04 26
17 45 02
NGC 6040A
17.5" (5/13/88): faint, small, elongated 5:2 SSW-NNE, low even surface brightness. Forms a close interacting system with N6040B 26" S. First of three NGC galaxies with N6041 2.7' SE and N6042 4.3' SE. Als, IC 1170 is just visible 2.0' SSE. Located within the central core of Abell Galaxy Cluster 2151.

3
AGC 2151 Her GXCL 56.0' 13.8
16 05 12
17 44 00
NGC 6047
18" I spotted quite a few of the galaxies in this cluster. I actually looked at several of the Hercules galaxy clusters on two consecutive nights. Lots of mag 13 and 14 galaxies here. I checked off 15 galaxies in this group over the 2 observations. Chains of galaxies and galaxy groupings make it an especially nice find. NGC 6039, 40, 41, 42 made up one little group. NGC 6043, 45 and 47 another, and IC 1182, 83 and 85 yet another group -- all near the center. - Jane Houston Jones.

4
Arp 172 Her GX 1.1'x0.9' 15.2
16 05 33
17 36 18
IC 1178
17.5" (5/13/88): faint, small, round, bright core. Brighter of a close pair with IC 1181 20" SE. Located 12' S of IC 1182 in Abell Galaxy Cluster 2151. Combined CGCG mag of 15.0z for the pair.

4
Arp 172 Her GX 0.8'x0.7' 15.9
16 05 33
17 36 18
IC 1181
17.5" (5/13/88): extremely faint and small, possibly elongated. Forms a very close pair 20" SE of IC 1178 in Abell Galaxy Cluster 2151.

3
AGC 2152 Her GXCL 37.0' 13.8
16 05 24
16 26 00
MCG+3-41-95
18" I spotted five of the members, a straight line of galaxies PGC 57177, 57067/68 and PGC 57004, plus a little edge on PGC 57093. - Jane Houston Jones.

4
Arp 324 Her GX 1.7'x1.0' 14.2P
16 02 12
15 58 32
UGC 10143
22" PGC 56782 very faint, very small round patch. Less than 10 across. Lies 1.7 north of UGC 10143. UGC 10143 bright round patch with a slightly brighter center. About 60 across. MAC 1602+1557 very faint, very small round patch. Less than 10 across. Lies 1.1 SSW of UGC 10143. MCG+3-41-52 Bright round patch with a slightly brighter center. About 50 across, a little smaller than UGC 10143. Lies 2.4 SSW of UGC 10143. MAC 1602+1554 considerably bright round patch with a brighter center. About 40 across. Lies about 1.8 south of MCG+3-41-52. MCG+3-41-51 faint thin even surface brightness streak with a position angle of 100 . Lies about 1.5 SW of MAC 1602+1554. - Alvin Huey

3
AGC 2147 Her GXCL 39.2' 13.8
16 02 18
15 53 00
UGC 10143
18" Arp 324, a magnitude 14.3 galaxy is the brightest here and part of a nice little chain of galaxies. I checked off 4 galaxies in this group. - Jane Houston Jones.

3
Arp 91 Ser GX 1.3'x0.6' 12.1
15 34 34
15 11 41
NGC 5954
17.5" (7/7/94): forms the NE member of a striking double system with N5953 attached at the SW side. Fairly faint, fairly small, very elongated 3:1 N-S, 1.0'x0.3'. Almost even surface brightness but possibly brighter on the south end (photograph shows the core asymmetrically placed on the south end). Preceded by a string of three mag 13 stars which are 4' W and a pair of mag 13 stars with 1' separation is 1.5' SE. A mag 10 star lies 6' S.

3
Arp 91 Ser GX 1.6'x1.4' 12.1
15 34 32
15 11 41
NGC 5953
17.5" (7/7/94): bright, very small, round, 0.8' diameter. Sharp concentration with a striking high surface brightness 20" core surrounded by a much fainter halo slightly elongated ~E-W. A mag 15-15.5 star is just visible at the SW edge 23" from the center. Forms a striking double system with N5954 attached at the NE edge 46" between centers. N5951 lies 16' SW.

4
Pal 14 Ser GC 2.5' 14.7
16 11 00
14 57 49
 
20" - Palomar 14's location is exactly as on MegaStar chart. Easy to locate as a bright star is close by. Not nearly as difficult visually as Pal 15. Though its listed mag is fainter, Pal 14 has a higher surface brightness than Pal 15. Seen as a diffuse soft round glow, with no brightening to its middle, and no hint of any resolution. But the edges of the globular are fairly strong against background sky. According to Skiff, brightest stars are 17.6 mag and horizontal branch magnitude of stars in the cluster is 20.06 One of most distant globulars from the Sun. Discovered by H. Arp. - Barbara Wilson.

4
Arp 101 Ser GX 2.1'x0.4' 14.7
16 04 31
14 49 06
UGC 10169
4
Arp 101 Ser GX 1.1'x0.9' 15.5
16 04 24
14 49 06
UGC 10164

4
HGC 081A Her GX4 0.5'x0.3' 17.0
16 18 14
12 47 43
UGC 10319
18" At 257x an extremely faint, small, low surface brightness glow was intermittently visible perhaps 1/3 of the time. Forms the southern vertex of an equilateral triangle with two mag 12.5 to the ENE and NNW. Only a single member or the combined glow of two or more members was seen. A few years back HCG 81 appeared elongated or possibly double, although I still was not able to resolve the glow clearly into separate components

2
N5970 Ser GX 2.9x1.9 11.5
15 38 30
12 11 16
 
13.1" (6/4/83): fairly bright, moderately large, elongated 3:2 ~E-W, broad concentration to core. Located 5.3' SW of mag 7.5 SAO 101663.

4
AGC 2063 Ser GXCL 22.4' 15.1
15 23 00
08 36 00
CGCG 77-97
18" While surveying the NGC, I previously had run across NGC 5919 and 5920 which are outlying members of the rich cluster, Abell 2063. Within the main portion of the cluster, the new version of the Uranometria simply plots one galaxy, MCG +02-39-020. Although this Serpens galaxy cluster was slipping into the western sky when I started observing, I was pretty amazed to identify 21 new galaxies in the cluster -- mostly in the same high power field!! These galaxies are generally in the mag 15.5-15.7 (B) range and sometimes required 300x to distinguish from faint stars. As you might guess, there wasn't much detail in these 10"-15" blobs -- just logging and identifying them was an accomplishment.

3
N6106 Her GX 2.5x1.4 12.2
16 18 47
07 24 40
 
17.5": fairly faint, fairly small, gradually increases to a bright core, mottled appearance. A knot is visible on the W side (there is a brighter extension on the SW side on the POSS). A mag 15 star is 1.1' S of center and an extremely faint mag 16 star is just off the NNW end.

4
HGC 076B Ser GX4 0.4'x0.3' 14.9B
15 31 40
07 20 19
MCG +01-40-003
4
HGC 076C Ser GX4 0.5' 15.3B
15 31 37
07 18 43
NGC 5941
4
HGC 076A Ser GX4 0.6'x0.3' 15.9B
15 31 47
07 18 27
NGC 5944
4
HGC 076D Ser GX4 0.4' 15.8B
15 31 42
07 17 14
NGC 5942
17.5" This rectangular quartet consists of three NGC galaxies, although NGC 5941 and NGC 5942 (discovered by Lewis Swift) have been misidentified in nearly all modern catalogues. I felt the brightest member visually was NGC 5941 ("B") which appeared faint, fairly small, elongated 4:3 SW-NE, 0.7'x0.5', weak concentration to a brighter core, faint stellar nucleus. NGC 5944 ("A") situated 2.6' SE is very faint, round, 30" diameter, weak concentration with a slightly brighter core. NGC 5942 ("C") is very faint, very small, round, 20" diameter with a stellar nucleus at moments. A mag 14.5 star is off the NW side 45" from center. This is the third brightest in the group. The faintest member MCG +01-40-002 ("D") is 2.0' SE and appears extremely faint, very small, 15" diameter, low even surface brightness. A mag 15 star is 1.1' SE.

1
M5 Ser GC 23.0' 5.7
15 18 33
02 17 13
 
18" (7/26/06): at 435x the cluster overfills the field and the intense 3.5' core is resolved to the center. The core has two easily resolved parallel star lanes oriented E-W that cross the core on the north and south sides and an extremely dense knot of stars is resolved on the west side of the northern lane. M5 was just visible naked-eye but the nearby mag 5 star (5 Ser) detracts from the observation.

2
N6070 Ser GX 3.5x1.9 11.8
16 09 58
00 42 32
 
17.5" (6/11/88): fairly bright, large, oval 2:1 SW-NE, broad moderate concentration. Brightest of trio with N6070B 4.3' NE and 6070C 5.6' NE. Located 7.9' SW of mag 7.7 SAO 121396.

4
Sh 2-033 Ser BN 30'x20' 1
15 59 52
-01 37 03
 

4
Sh 2-024 Oph BN 30'x10' 2
16 11 03
-07 04 38
 

4
Arp 254 Lib GX 1.5'x0.9' 14.5
15 21 32
-07 22 37
NGC 5917
17.5" (7/9/94): moderately bright, fairly small, elongated 3:2 WSW-ENE, brighter along the major axis. A mag 15 star is just off the SW edge. Forms an interacting pair with MCG -01-39-003 4.2' S. Located 4' NNE of a mag 10 star.

1
M80 Sco GC 10.0' 7.3
16 17 02
-22 58 30
 
18" (7/24/06): at 325x appears bright, fairly large, round, pretty symmetrical appearance, contains a blazing 1.5' core in a 5' to 6' halo. At 435x the halo and the periphery of the core are well resolved into roughly 100 stars and additional extremely faint stars pop in and out of visibility. The core itself is overlayed with a number of faint stars. Beautiful view at 565x as the cluster nearly fills the 7' field with stars from edge to edge with 100-150 stars and the core region is well resolved. The cluster appears asymmetric with the halo more extensive to the west (core offset to the east).

4
Sh 2-001 Sco BN 150'x60' 3
15 58 50
-26 07 14
 

Source catalogs


Herschel 400 are identified as NGCXXXX, Herschel 400-II are indentified as NXXXX.

Prior lists available in the Astronomical Catalogs and Observing List section of Adventures In Deep Space.


All descriptions are by Steve Gottlieb, including his NGC Notes, except where otherwise attributed.

visitors since August 31, 2007