Celestial Atlas
(NGC 6650 - 6699) ←     NGC Objects: NGC 6700 - 6749 Link for sharing this page on Facebook     → (NGC 6750 - 6799)
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6717, 6718, 6719, 6720, 6721, 6722, 6723, 6724, 6725, 6726, 6727, 6728, 6729, 6730, 6731, 6732, 6733,
6734, 6735, 6736, 6737, 6738, 6739, 6740, 6741, 6742, 6743, 6744, 6745, 6746, 6747, 6748, 6749

Page last updated Mar 27, 2017
Noted the equality of NGC 6748 and 6751, added Dreyer NGC entries
WORKING 6708/9: Still cleaning up mess involving identity of NGC 6708
WORKING 6700: Add/update Steinicke listings/data, check IDs

NGC 6700 (= PGC 62376)
Discovered (Aug 17, 1873) by
Édouard Stephan
A 13th-magnitude spiral galaxy (type SBc?) in Lyra (RA 18 46 04.3, Dec +32 16 46)
Historical Identification: Per Dreyer, NGC 6700 (= GC 5930, Stephan list V (#3), 1860 RA 18 40 50, NPD 57 52.0) is "extremely faint, a little extended, diffuse, irregularly round".
Physical Information: Apparent size 1.4 by 1.0? arcmin

NGC 6701 (= PGC 62314)
Discovered (Aug 6, 1883) by
Lewis Swift
A 12th-magnitude spiral galaxy (type SBa?) in Draco (RA 18 43 12.6, Dec +60 39 11)
Historical Identification: Per Dreyer, NGC 6701 (Swift list II (#71), 1860 RA 18 41 27, NPD 29 29.3) is "pretty bright, pretty small, much extended, faint star close to east".
Physical Information: Apparent size 1.5 by 1.3? arcmin

NGC 6702 (= PGC 62395)
Discovered (Sep 8, 1863) by
Heinrich d'Arrest
A 12th-magnitude elliptical galaxy (type E2?) in Lyra (RA 18 46 57.6, Dec +45 42 22)
Historical Identification: Per Dreyer, NGC 6702 (= GC 5931, d'Arrest, 1860 RA 18 42 54, NPD 44 26.9) is "pretty faint, small, a little extended".
Physical Information: Apparent size 1.9 by 1.5? arcmin

NGC 6703 (= PGC 62409)
Discovered (Sep 4, 1863) by
Heinrich d'Arrest
An 11th-magnitude lenticular galaxy (type E/S0?) in Lyra (RA 18 47 18.9, Dec +45 33 03)
Historical Identification: Per Dreyer, NGC 6703 (= GC 5932, d'Arrest, 1860 RA 18 43 16, NPD 44 36.1) is "bright, small, round, much brighter middle".
Physical Information: Apparent size 2.7 by 2.5? arcmin

NGC 6704 (= OCL 82)
Discovered (Jul 23, 1854) by
August Winnecke
Also observed? (date?) by Arthur von Auwers
A 9th-magnitude open cluster (type I3m) in Scutum (RA 18 50 45.8, Dec -05 12 18)
Historical Identification: Per Dreyer, NGC 6704 (= GC 4435, Winnecke, 1860 RA 18 43 20, NPD 95 21.3) is "a cluster, bright, 60 stars of 13th magnitude (Auwers 43)".
Physical Information: Apparent size 6.0? arcmin

NGC 6705 (=
M11 = OCL 76), The Wild Duck Cluster
Discovered (1681) by Gottfried Kirch
Also observed (1733) by William Derham
Recorded (1764) by Charles Messier as M11
Also observed (Jul 23, 1827) by John Herschel
A 6th-magnitude open cluster (type I2r) in Scutum (RA 18 51 05.0, Dec -06 16 12)
Historical Identification: Per Dreyer, NGC 6705 (= GC 4437 = JH 2019, Kirch 1681, M 11, 1860 RA 18 43 33, NPD 96 25.9) is "a remarkable object, a cluster, very bright, large, irregularly round, rich, a 9th magnitude star and stars from 11th magnitude".
Discovery Notes: As is the case with many of the objects in Messier's catalog, M11 was first noticed (as a fuzzy patch in the sky) nearly a century earlier, in this case by German astronomer Gottfried Kirch, in 1681. William Derham was probably the first to see that it consisted of a cloud of faint stars, in 1733.
Physical Information: Approximately 5000 light-years distant, M11 is one of the richest and most compact open clusters, with nearly 3000 stars concentrated in a region only twenty light-years across (or from our perspective, about 11 arcmin), many of which are upper Main Sequence blue giants, or more highly evolved yellow and red giants. As a result, an observer in the center of the cluster would see several hundred first magnitude stars scattered around the sky. Given the presence of Main Sequence stars up to spectral class B8, the age of the cluster is estimated at 250 million years, or only about 5% the age of our solar system.
CFHT image of open cluster NGC 6705, also known as M11, or the Wild Duck Cluster
Above, a ? arcmin wide image of NGC 6705
(Image Credit & © Jean-Charles Cuillandre (CFHT), Hawaiian Starlight, CFHT)

NGC 6706 (= PGC 62596)
Discovered (Jun 8, 1836) by
John Herschel
Also observed (date?) by DeLisle Stewart
A 13th-magnitude lenticular galaxy (type E/S0?) in Pavo (RA 18 56 51.0, Dec -63 09 59)
Historical Identification: Per Dreyer, NGC 6706 (= GC 4436 = JH 3760, 1860 RA 18 43 37, NPD 153 19.7) is "a nebula. No description".The second IC adds (per DeLisle Stewart) "very faint, very small, considerably extended 120 degrees, stellar nucleus".
Physical Information: Apparent size 1.5 by 0.7? arcmin.

NGC 6707 (= PGC 62563)
Discovered (Jul 8, 1834) by
John Herschel
A 13th-magnitude spiral galaxy (type SBc?) in Telescopium (RA 18 55 21.9, Dec -53 49 09)
Historical Identification: Per Dreyer, NGC 6707 (= GC 4438 = JH 3761, 1860 RA 18 44 02, NPD 143 58.8) is "faint, small, very little extended, gradually brighter middle".
Physical Information: Apparent size 2.1 by 1.0? arcmin

NGC 6708 (= PGC 62569)
Discovered (Jun 9, 1836) by
John Herschel
A 12th-magnitude spiral galaxy (type Sb?) in Telescopium (RA 18 55 35.6, Dec -53 43 24)
Historical Identification: Per Dreyer, NGC 6708 (= GC 4439 = JH 4021, hon, 1860 RA 18 44 18, NPD 143 53.3) is "pretty faint, small, round, gradually pretty much brighter middle, last of group", the previous entry (NG 6707) also being a member of the "group".
Discovery Notes: The "hon" in Dreyer's entry refers to a group of observations by Herschel (his 4016 through 4021) which were inadvertently left out of the main part of his catalog and only mentioned in the errata.
Physical Information: Apparent size 1.2 by 0.9? arcmin

NGC 6709 (= OCL 100)
Discovered (Aug 21, 1827) by
John Herschel
A 7th-magnitude open cluster (type III2m) in Aquila (RA 18 51 30.0, Dec +10 20 00)
Historical Identification: Per Dreyer, NGC 6709 (= GC 4440 = JH 2020, 1860 RA 18 44 53, NPD 79 49.0) is "a cluster, pretty rich, a little compressed, irregular figure".
Physical Information: Apparent size 15? arcmin

NGC 6710 (= PGC 62482)
Discovered (Aug 3, 1864) by
Albert Marth
Discovered (Jul 18, 1871) by Édouard Stephan
A 13th-magnitude lenticular galaxy (type S0/a?) in Lyra (RA 18 50 34.0, Dec +26 50 19)
Historical Identification: Per Dreyer, NGC 6710 (= GC 5933, Marth #391, Stephan list I (II #25), 1860 RA 18 44 56, NPD 63 19.5) is "very faint, small, round, brighter middle".
Discovery Notes: Although Dreyer credits Stephan's observation to his first list, the object actually appears in his second (as shown in parentheses); so the "I" must be a typographical error. (The objects in Stephan's list II are listed singly and in groups and are not listed by number, so the "#25" is not as useful as the NGC coordinates in identifying the particular object in question, as they agree with Stephan's 1870 RA 18 45 19.95, NPD 63 18 50.1.)
Physical Information: Apparent size 1.7 by 1.0? arcmin

NGC 6711 (= PGC 62456)
Discovered (Aug 5, 1885) by
Lewis Swift
A 13th-magnitude spiral galaxy (type SBbc? pec) in Draco (RA 18 49 00.9, Dec +47 39 27)
Historical Identification: Per Dreyer, NGC 6711 (Swift list II (#72), 1860 RA 18 45 04, NPD 42 30.6) is "very faint, pretty small, round, a little brighter middle".
Physical Information: Apparent size 1.1 by 0.9? arcmin

NGC 6712 (= GCL 103)
Discovered (Jun 16, 1784) by
William Herschel
Also observed (May 27, 1835) by John Herschel
An 8th-magnitude globular cluster (type IX) in Scutum (RA 18 53 04.3, Dec -08 42 20)
Historical Identification: Per Dreyer, NGC 6712 (= GC 4441 = JH 3762 = WH I 47, 1860 RA 18 45 26, NPD 98 52.4) is "a globular cluster, pretty bright, very large, irregular, very gradually a little brighter middle, well resolved, clearly consisting of stars".
Physical Information: Apparent size 9.8? arcmin

NGC 6713 (= PGC 62487)
Discovered (Aug 3, 1864) by
Albert Marth
A 14th-magnitude lenticular galaxy (type S0?) in Lyra (RA 18 50 44.2, Dec +33 57 37)
Historical Identification: Per Dreyer, NGC 6713 (= GC 5934, Marth #392, 1860 RA 18 45 39, NPD 56 12) is "very faint, small, round, brighter middle".
Physical Information: Apparent size 0.4 by 0.3? arcmin

NGC 6714
Recorded (May 27, 1886) by
Lewis Swift
A lost or nonexistent object in Draco (RA 18 45 49.0, Dec +66 43 30)
Historical Identification: Per Dreyer, NGC 6714 (Swift list IV (#74), 1860 RA 18 45 46, NPD 23 25.8) is "most extremely faint, pretty small, very difficult, several bright stars to north".

NGC 6715 (=
M54 = GCL 104)
Discovered (Jul 24, 1778) by Charles Messier (and listed as M54)
Also observed (Jun 2, 1826) by James Dunlop
Also observed (Jul 31, 1834) by
John Herschel
An 8th-magnitude globular cluster (type III) in Sagittarius (RA 18 55 03.3, Dec -30 28 40)
Historical Identification: Per Dreyer, NGC 6715 (= GC 4442 = JH 3763, M 54, Dunlop 624, 1860 RA 18 46 06, NPD 120 38.5) is "a globular cluster, very bright, large, round, gradually then suddenly much brighter middle, well resolved, clearly consisting of stars, stars of 15th magnitude".
Physical Information: M54 was formerly thought to be an outlying member of the Milky Way's globular clusters, at perhaps 60 thousand light years distance. Recent evidence, however, makes it probable that it is actually part of one of the Milky Way's nearest neighbors, the Sagittarius Dwarf Elliptical Galaxy. If so, it is almost 90 thousand light years away, and its 12 arcmin apparent size would correspond to 150 light years.
NOAO image of globular cluster NGC 6715, also known as M54
Above, a ? arcmin wide image of NGC 6715 (Image Credit REU Program, AURA, NSF, NOAO)
Below, a ? arcmin wide image of the cluster
(Image Credit & © Jim Misti, Misti Mountain Observatory; used by permission)
Misti Mountain Observatory image of globular cluster NGC 6715, also known as M54
Below, a 3.4 arcmin wide HST image of the cluster (Image Credit ESA, HST, NASA)
HST image of globular cluster NGC 6715, also known as M54

NGC 6716 (= OCL 46)
Discovered (Jul 14, 1830) by
John Herschel
An 8th-magnitude open cluster (type IV1p) in Sagittarius (RA 18 54 34.0, Dec -19 54 30)
Historical Identification: Per Dreyer, NGC 6716 (= GC 4443 = JH 2021, 1860 RA 18 46 17, NPD 110 04.1) is "a cluster, pretty rich, stars from 9th to 13th magnitude".
Physical Information: Apparent size 10? arcmin

NGC 6717 (= GCL 105)
Discovered (Aug 7, 1784) by
William Herschel
Also observed (Jul 1, 1826) by John Herschel
An 8th-magnitude globular cluster (type VIII) in Sagittarius (RA 18 55 06.2, Dec -22 42 01)
Historical Identification: Per Dreyer, NGC 6717 (= GC 4444 = JH 2022 = JH 3766 = WH III 143, 1860 RA 18 46 40, NPD 112 52.3) is "faint, small, partially resolved (some stars seen), a cluster plus nebulosity".
Physical Information: Apparent size 5.4? arcmin

NGC 6718 (= PGC 62688)
Discovered (Jun 23, 1835) by
John Herschel
A 13th-magnitude spiral galaxy (type SBb?) in Pavo (RA 19 01 28.9, Dec -66 06 37)
Historical Identification: Per Dreyer, NGC 6718 (= GC 4445 = JH 3764, 1860 RA 18 47 26, NPD 156 17.2) is "very faint, small, round, gradually a little brighter middle, 9th magnitude star to southwest".
Physical Information: Apparent size 1.4 by 0.8? arcmin

NGC 6719 (= PGC 62710)
Discovered (Jun 23, 1835) by
John Herschel
A 13th-magnitude spiral galaxy (type Sc?) in Pavo (RA 19 03 07.3, Dec -68 35 16)
Historical Identification: Per Dreyer, NGC 6719 (= GC 4446 = JH 3765, 1860 RA 18 48 03, NPD 158 47.0) is "very faint, pretty large, round, very gradually a very little brighter middle".
Physical Information: Apparent size 1.7 by 0.8? arcmin

NGC 6720 (=
M57), The Ring Nebula
Discovered (January, 1779) by Antoine Darquier
Discovered (Jan 31, 1779) by Charles Messier and listed as M57
Also observed (Aug 19, 1828) by John Herschel
A 9th-magnitude planetary nebula in Lyra (RA 18 53 35.1, Dec +33 01 47)
Historical Identification: Per Dreyer, NGC 6720 (= GC 4447 = JH 2023, M 57, Darquier, 1860 RA 18 48 23, NPD 57 08.6) is "a magnificent or otherwise interesting object, an annular nebula, bright, pretty large, considerably extended (in Lyra)".
Physical Information: NGC 6720 is about 2000 light years away. Apparent size 3.0 by 2.4? arcmin.
HST image of planetary nebula NGC 6720, the Ring Nebula, also known as M57
Above, a ? arcmin wide image of NGC 6720 (Image credit H. Bond et al., Hubble Heritage Team (STScI/AURA), NASA)

NGC 6721 (= PGC 62680)
Discovered (Jul 12, 1834) by
John Herschel
A 12th-magnitude elliptical galaxy (type E1?) in Pavo (RA 19 00 50.9, Dec -57 45 34)
Historical Identification: Per Dreyer, NGC 6721 (= GC 4448 = JH 3767, 1860 RA 18 48 51, NPD 147 56.8) is "pretty faint, considerably small, round, very much brighter middle".
Physical Information: Apparent size 1.6 by 1.4? arcmin

NGC 6722 (= PGC 62722)
Discovered (Jun 8, 1836) by
John Herschel
A 13th-magnitude spiral galaxy (type Sb?) in Pavo (RA 19 03 40.1, Dec -64 53 42)
Historical Identification: Per Dreyer, NGC 6722 (= GC 4449 = JH 3768, 1860 RA 18 49 59, NPD 155 05.4) is "pretty faint, small, extended, gradually a little brighter middle, 2 stars of 8th magnitude to west".
Physical Information: Apparent size 2.9 by 0.4? arcmin

NGC 6723 (= GCL 106)
Discovered (Jun 2, 1826) by
James Dunlop
Also observed (Aug 31, 1834) by John Herschel
A 7th-magnitude globular cluster (type VII) in Sagittarius (RA 18 59 33.2, Dec -36 37 52)
Historical Identification: Per Dreyer, NGC 6723 (= GC 4450 = JH 3770, Dunlop 573, 1860 RA 18 50 08, NPD 126 48.8) is "a globular cluster, very large, very little extended, very gradually brighter middle, well resolved, clearly consisting of stars, stars from 14th to 16th magnitude".
Physical Information: Apparent size 13? arcmin

NGC 6724
Discovered (Sep 5, 1828) by
John Herschel
A group of stars in Aquila (RA 18 56 46.0, Dec +10 25 42)
Historical Identification: Per Dreyer, NGC 6724 (= GC 4451 = JH 2024, 1860 RA 18 50 25, NPD 79 49.3) is "a cluster".
Physical Information:

NGC 6725 (= PGC 62692)
Discovered (Jul 8, 1834) by
John Herschel
Also observed (date?) by DeLisle Stewart
An 11th-magnitude lenticular galaxy (type S0?) in Telescopium (RA 19 01 56.4, Dec -53 51 51)
Historical Identification: Per Dreyer, NGC 6725 (= GC 4452 = JH 3769, 1860 RA 18 50 26, NPD 144 07.5) is "extremely faint, pretty large, round". The second IC adds (per DeLisle Stewart) "not pretty large, round, but considerably faint, extremely small, stellar nucleus, with straight wisp at 40 degrees".
Physical Information: Apparent size 2.2 by 0.5? arcmin.

NGC 6726
Discovered (Jun 15, 1861) by
Julius Schmidt
Discovered (Jul 2, 1864) by Albert Marth
A reflection nebula in Corona Australis (RA 19 01 39.2, Dec -36 53 29)
Historical Identification: Per Dreyer, NGC 6726 (= GC 5935, Marth #393, Schmidt, 1860 RA 18 52 13, NPD 127 04.6) is "a 6th or 7th magnitude star in a faint, pretty large nebulosity".
Physical Information: Apparent size 9.0 by 7.0? arcmin. Paired with NGC 6727.

NGC 6727
Discovered (Jun 15, 1861) by
Julius Schmidt
Discovered (Jul 2, 1864) by Albert Marth
A reflection nebula in Corona Australis (RA 19 01 42.2, Dec -36 52 35)
Historical Identification: Per Dreyer, NGC 6727 (= GC 5936, Marth #394, Schmidt, 1860 RA 18 52 15, NPD 127 03.8) is "an 8th magnitude star in a faint, pretty large nebulosity".
Physical Information: Apparent size 80? arcmin. Paired with NGC 6726.

NGC 6728
Discovered (Jun 16, 1784) by
William Herschel
A group of stars in Scutum (RA 18 57 31.4, Dec -08 57 56)
Historical Identification: Per Dreyer, NGC 6728 (= GC 4453 = WH VIII 13, 1860 RA 18 52 21, NPD 99 07.6) is "a cluster, very large, poor".
Physical Information: Apparent size 18? arcmin

NGC 6729
Discovered (Jun 15, 1861) by
Julius Schmidt
Discovered (Jul 2, 1864) by Albert Marth
An emission and reflection nebula in Corona Australis (RA 19 01 55.3, Dec -36 57 28)
Historical Identification: Per Dreyer, NGC 6729 (= GC 5937, Marth #395, Schmidt, 1860 RA 18 52 28, NPD 127 08.5) is "a variable star (11th magnitude and fainter) with nebulosity, a very remarkable object".
Physical Information: Apparent size 25 by 20? arcmin. In same region as reflection nebulae NGC 6726 and 6727.

NGC 6730 (= PGC 62796)
Discovered (Jul 23, 1835) by
John Herschel
An 11th-magnitude elliptical galaxy (type E1?) in Pavo (RA 19 07 33.6, Dec -68 54 44)
Historical Identification: Per Dreyer, NGC 6730 (= GC 4454 = JH 3771, 1860 RA 18 52 32, NPD 159 06.8) is "very faint, small, round, pretty much brighter middle, 7th or 8th magnitude star to northeast".
Physical Information: Apparent size 1.8 by 1.5? arcmin. Only 1.5 arcmin southwest of 7th magnitude SAO 254465.
DSS image of region near elliptical galaxy NGC 6730
Above, a 12 arcmin wide DSS image centered on NGC 6730
Below, a 2.4 arcmin wide DSS image of the galaxy
DSS image of elliptical galaxy NGC 6730

NGC 6731
Discovered (1886) by
Gerhard Lohse
A group of stars in Lyra (RA 18 57 13.5, Dec +43 04 38)
Historical Identification: Per Dreyer, NGC 6731 (J. G. Lohse, 1860 RA 18 52 34, NPD 47 07.1) is "very faint".
Physical Information:

NGC 6732 (= PGC 62586)
Discovered (Oct 16, 1886) by
Lewis Swift
Also observed (Sep 8, 1888) by Guillaume Bigourdan
Also observed (date?) by Herbert Howe
A 14th-magnitude elliptical galaxy (type E4?) in Draco (RA 18 56 24.1, Dec +52 22 39)
Historical Identification: Per Dreyer, NGC 6732 (Swift list V (#87), 1860 RA 18 52 50, NPD 37 48.0) is "pretty bright, very small, round, faint star to north". The second IC lists a corrected RA (per Howe and Bigourdan) of 18 53 09.
Physical Information: Apparent size 1.2 by 0.7? arcmin.
DSS image of region near elliptical galaxy NGC 6732
Above, a 12 arcmin wide DSS image centered on NGC 6732
Below, a 2.4 arcmin wide DSS image of the galaxy, also showing PGC 2413402
DSS image of elliptical galaxy NGC 6732 and compact galaxy PGC 2413402

PGC 2413402
Not an NGC object but listed here since an optical double with
NGC 6732
A 15th-magnitude compact galaxy (type C??) in Draco (RA 18 56 26.2, Dec +52 22 38)
Physical Information: Apparent size 0.1 by 0.1? arcmin; nothing else available. Probably an optical double with NGC 6732 (which see for images), rather than a physical pairing. Given the poor quality of available images possibly a foreground star or stars (as suggested by NED).

NGC 6733 (= PGC 62770)
Discovered (Aug 8, 1834) by
John Herschel
A 12th-magnitude lenticular galaxy (type SB0?) in Pavo (RA 19 06 10.7, Dec -62 11 48)
Historical Identification: Per Dreyer, NGC 6733 (= GC 4455 = JH 3772, 1860 RA 18 53 15, NPD 152 23.6) is "most extremely faint, very gradually a little brighter middle, very difficult".
Physical Information: Apparent size 1.8 by 1.2? arcmin

NGC 6734 (= PGC 62786)
Discovered (Jun 8, 1836) by
John Herschel
A 13th-magnitude lenticular galaxy (type E/S0?) in Pavo (RA 19 07 14.4, Dec -65 27 39)
Historical Identification: Per Dreyer, NGC 6734 (= GC 4456 = JH 3773, 1860 RA 18 53 29, NPD 155 39.7) is "very faint, small, round, gradually a little brighter middle, western of 2", the other being NGC 6736.
Physical Information: Apparent size 1.3 by 1.1? arcmin

NGC 6735
Discovered (Jul 18, 1827) by
John Herschel
A star group in Aquila (RA 19 00 45.3, Dec -00 27 21)
Historical Identification: Per Dreyer, NGC 6735 (= GC 4457 = JH 2025, 1860 RA 18 53 33, NPD 90 39.1) is "a cluster, very large, poor, stars from 12th magnitude".
Physical Information: Apparent size 8.0? arcmin. Near 7th-magnitude SAO 142915.

NGC 6736 (= PGC 62792)
Discovered (Jun 8, 1836) by
John Herschel
A 13th-magnitude elliptical galaxy (type E2?) in Pavo (RA 19 07 29.3, Dec -65 25 43)
Historical Identification: Per Dreyer, NGC 6736 (= GC 4458 = JH 3774, 1860 RA 18 53 45, NPD 155 38.2) is "extremely faint, small, round, gradually a little brighter middle, eastern of 2", the other being NGC 6734.
Physical Information: Apparent size 1.1 by 0.9? arcmin

NGC 6737
Discovered (Jul 14, 1830) by
John Herschel
A group of stars in Sagittarius (RA 19 02 10.0, Dec -18 32 48)
Historical Identification: Per Dreyer, NGC 6737 (= GC 4459 = JH 2026, 1860 RA 18 53 59, NPD 108 44.1) is "a cluster, pretty large, pretty rich, round, stars from 12th to 15th magnitude".
Physical Information:

NGC 6738 (= OCL 101)
Discovered (Jul 29, 1829) by
John Herschel
An 8th-magnitude open cluster in Aquila (RA 19 01 20.0, Dec +11 36 54)
Historical Identification: Per Dreyer, NGC 6738 (= GC 4460 = JH 2027, 1860 RA 18 54 50, NPD 78 35.3) is "a cluster, poor, a little compressed".
Physical Information: Apparent size 15? arcmin

NGC 6739 (= PGC 62799)
Discovered (Aug 7, 1834) by
John Herschel
A 12th-magnitude lenticular galaxy (type S0?) in Pavo (RA 19 07 48.7, Dec -61 22 03)
Historical Identification: Per Dreyer, NGC 6739 (= GC 4461 = JH 3775, 1860 RA 18 55 07, NPD 151 34.4) is "considerably faint, very small, considerably extended, pretty suddenly brighter middle, 3 stars to west".
Physical Information: Apparent size 2.4 by 0.9? arcmin

NGC 6740 (= PGC 62675)
Discovered (Jun 28, 1864) by
Albert Marth
A 14th-magnitude spiral galaxy (type Sb?) in Lyra (RA 19 00 50.5, Dec +28 46 16)
Historical Identification: Per Dreyer, NGC 6740 (= GC 5938, Marth #396, 1860 RA 18 55 20, NPD 61 25) is "most extremely faint, small".
Physical Information: Apparent size 0.9 by 0.8? arcmin

NGC 6741
Discovered (Aug 19, 1882) by
Edward Pickering
A 12th-magnitude planetary nebula in Aquila (RA 19 02 37.0, Dec -00 26 56)
Historical Identification: Per Dreyer, NGC 6741 (Pickering (HN 50), 1860 RA 18 55 25, NPD 90 38) is "a planetary nebular, stellar".
Physical Information: Apparent size 0.13? arcmin

WORKING HERE: remove artifact in DSS image

NGC 6742 (= Abell 50)
Discovered (Jul 8, 1788) by
William Herschel
Also observed (Sep 24, 1862) by Heinrich d'Arrest
A 13th-magnitude planetary nebula in Draco (RA 18 59 19.8, Dec +48 27 59)
Historical Identification: Per Dreyer, NGC 6742 (= GC 4462 = WH III 742, d'Arrest, 1860 RA 18 55 32, NPD 41 45.2) is "very faint, stellar".
Physical Information: NGC 6742 is probably about 13 thousand light years away. If so, the nebula's apparent size of 33 arcsec corresponds to about 0.9 light years. The 20th-magnitude central star has a temperature of about 100 thousand Kelvins, and because of its high temperature is about 50 times as bright as the Sun despite having collapsed to a white dwarf about the size of the Earth.
NOAO image of region near planetary nebula NGC 6742, also known as Abell 50, superimposed on a DSS image to fill in otherwise missing areas
Above, a 12 arcmin wide NOAO/DSS composite image centered on NGC 6742
Below, a 2.4 arcmin wide image of the nebula (Image Credit above & below Adam Block/NOAO/AURA/NSF)
NOAO image of planetary nebula NGC 6742, also known as Abell 50

NGC 6743
Discovered (Jul 6, 1828) by
John Herschel
A group of stars in Lyra (RA 19 01 26.7, Dec +29 17 24)
Historical Identification: Per Dreyer, NGC 6743 (= GC 4463 = JH 2028, 1860 RA 18 55 58, NPD 60 55.6) is "a cluster, pretty large, poor, stars from 11th to 12th magnitude".
Physical Information: Apparent size 8.0? arcmin

NGC 6744 (= PGC 62836)
Discovered (Jun 30, 1826) by
James Dunlop
Also observed (Jun 20, 1835) by John Herschel
A 9th-magnitude spiral galaxy (type SBbc?) in Pavo (RA 19 09 46.1, Dec -63 51 24)
Historical Identification: Per Dreyer, NGC 6744 (= GC 4464 = JH 3776, Dunlop 262, 1860 RA 18 56 27, NPD 154 04.0) is "considerably bright, considerably large, round, very gradually then suddenly very much brighter middle, mottled but not resolved".
Physical Information: Apparent size 20.1 by 12.9? arcmin. NGC 6744 is about 30 million light years away. Its appearance is thought to be nearly identical to our own galaxy, save for the fact that it is about twice as large, and therefore probably about ten times as massive. (Note: the stated size of the galaxy includes some very faint outer arms. In the Observatorio Antilhue image immediately below the faint tracery of the northernmost arm extends nearly to the top of the image, then curves around past the faint irregular galaxy (PGC 62815) to the northwest of the spiral.)
Observatorio Antilhue image of spiral galaxy NGC 6744
Above, a nearly 20 arcmin wide image of NGC 6744
(Credit & © for image above Daniel Verschatse, Observatorio Antilhue; used by permission)
Below, a ? arcmin wide multi-spectral image of the galaxy emphasizes its emission nebulae
(Image Credit ESO; the mis-registration of component images is not uncommon in such composites)
ESO multi-spectral image of spiral galaxy NGC 6744

PGC 62815 (= "NGC 6744A")
Not an NGC object, but listed here since sometimes called NGC 6744A
A 15th-magnitude irregular galaxy (type IBm?) in
Pavo (RA 19 08 43.7, Dec -63 43 48)
Physical Information: Apparent size 1.8 by 0.7? arcmin.
Observatorio Antilhue image of irregular galaxy PGC 62815, sometimes referred to as NGC 6744A
Above, a 2.4 arcmin wide image centered on PGC 62815
(Credit & © for images above & below Daniel Verschatse, Observatorio Antilhue; used by permission)
Below, a 12 arcmin wide image showing the galaxy's position relative to NGC 6744
Labeled Observatorio Antilhue image of spiral galaxy NGC 6744, also showing PGC 62815

NGC 6745 (= PGC 62691 (= PGC 2170240) + PGC 200362)
Discovered (Jul 24, 1879) by
Édouard Stephan
A 13th-magnitude spiral galaxy (type S??) in Lyra ( RA 19 01 41.7, Dec +40 44 37)
Companion PGC 200361 = a 15th-magnitude spiral galaxy (type Sm?) at RA 19 01 41.9, Dec +40 45 35
Historical Identification: Per Dreyer, NGC 6745 (Stephan list X (#38), 1860 RA 18 57 07, NPD 49 27.3) is "very faint, a little extended north-south". The position precesses to RA 19 01 42.0, Dec +40 44 41, dead center on the galaxy, and the description fits, so the identification is certain.
Physical Information: NGC 6745 collided with its northern "companion" (PGC 200361) about ten million years ago (this is determined by the ages of the stars created by the collision; some of the brighter ones are already dying, and their properties correspond to stars with lifetimes of about ten million years). Dynamical studies indicate that the smaller galaxy approached the larger one from the lower right, swung around it and collided with its tidally distorted outline. In the process, clouds of gas and dust in each galaxy slammed into similar clouds in the other, resulting in shock-wave formation of large numbers of stars, most notably large numbers of hot, bright stars which make up the knots of bright stars on the left and upper side of NGC 6745 (the collisional region being so bright that it has its own listing, as PGC 200362). Despite their collision the two galaxies are unlikely to merge, as the smaller one appears to be moving away from the larger one at close to a thousand km/sec (data are scant, but there is an NED reference to the difference in velocity). Based on its recessional velocity of 4545 km/sec, NGC 6745 is about 200 million light years away. Given that and its apparent size of 1.4 by 0.5 arcmin (counting the extension referred to as PGC 200362), it is about 85 thousand light years across. Its companion (PGC 200361) is about 0.3 by 0.2 arcmin, which corresponds to about 20 thousand light years.
SDSS image of region near spiral galaxy NGC 6745
Above, a 12 arcmin wide SDSS image centered on NGC 6745 and PGC objects 200361 and 200362
Below, a 2.4 arcmin wide SDSS image of the interacting galaxy pair
SDSS image of spiral galaxy NGC 6745 and its collisional neighbor, spiral galaxy PGC 200361
Below, a ? arcmin wide image of NGC 6745 and part of PGC 200361
(Image Credit NASA and The Hubble Heritage Team (STScI/AURA), Roger Lynds (KPNO/NOAO), Hubblesite)
HST image of spiral galaxy NGC 6745 and part of its collisional neighbor, spiral galaxy PGC 200361

NGC 6746 (= PGC 62852)
Discovered (Aug 11, 1836) by
John Herschel
A 13th-magnitude lenticular galaxy (type E/S0?) in Pavo (RA 19 10 22.3, Dec -61 58 06)
Historical Identification: Per Dreyer, NGC 6746 (= GC 4465 = JH 3777, 1860 RA 18 57 32, NPD 152 10.6) is "extremely faint, considerably small, round, gradually a little brighter middle".
Physical Information: Apparent size 1.4 by 0.9? arcmin

NGC 6747 (= PGC 62564)
Discovered (Oct 31, 1886) by
Lewis Swift
A 14th-magnitude elliptical galaxy (type E2?) in Draco (RA 18 55 21.5, Dec +72 46 20)
Historical Identification: Per Dreyer, NGC 6747 (Swift list V (#88), 1860 RA 18 57 42, NPD 17 23.5) is "most extremely faint, very difficult, pretty bright star to southeast".
Physical Information: Apparent size 0.5 by 0.4? arcmin

NGC 6748 (=
NGC 6751)
Discovered (Jul 20, 1863) by Albert Marth (and later listed as NGC 6751)
Discovered but misrecorded (Jul 17, 1871) by Édouard Stephan (and later listed as NGC 6748)
Rediscovered (Aug 3, 1881) by Édouard Stephan (and later listed as NGC 6751)
A 12th-magnitude planetary nebula in Aquila (RA 19 05 55.5, Dec -05 59 30)
Historical Identification: Per Dreyer, NGC 6748 (= GC 5939, Stephan list II (#26), 1860 RA 18 57 51, NPD 68 35.8) is "pretty bright, very small, brighter middle".
Discovery Notes: Though NGC 6748 was thought to be irretrievably lost until recently, Esmiol's 1916 update of Stephan's observations to the equinox of 1900 showed that his observation of Jul 17, 1871 was a misrecorded observation of NGC 6751 (which he accurately recorded on Aug 3, 1881), so it was just bad luck that the duplicate listing went unrecognized for so long.

NGC 6749 (= GCL 107 = OCL 91)
Discovered (Jul 15, 1827) by
John Herschel
A 12th-magnitude globular cluster in Aquila (RA 19 05 15.3, Dec +01 54 05)
Historical Identification: Per Dreyer, NGC 6749 (= GC 4466 = JH 2029, 1860 RA 18 57 57, NPD 88 25.2) is "a cluster, large, a little compressed, stars large and small". The position precesses to RA 19 05 02.0, Dec +01 47 12, about 7 arcmin southwest of the cluster, but there is nothing similar nearby, so the description makes the identification certain.
Physical Information: The cluster is about 26 thousand light years from the Sun. Given that and its apparent size of about 6 arcmin, it is about 45 light years across. Compared to many other globulars, NGC 6749 is sparsely populated; as a result, it is also cataloged as a rich open cluster. Which appellation is more accurate depends upon the nature of its stellar content. If it consists of metal-poor stars the best part of 12 billion years old, it might be more appropriate to call it a globular cluster. If it contains metal-rich stars of considerably younger origin, it would be an open (or "galactic") cluster. Which is correct is probably known, but other than Steinicke's statement ("not OCL") a quick survey of the literature does not reveal the answer; so I will leave that question for a later iteration of this page.
DSS image of region near globular cluster NGC 6749
Above, a 12 arcmin wide DSS image centered on NGC 6749
Below, an 8 arcmin wide DSS image of the cluster
DSS image of globular cluster NGC 6749
Below, an 8 arcmin wide PanSTARRS image of the cluster
PanSTARRS image of globular cluster NGC 6749
Celestial Atlas
(NGC 6650 - 6699) ←     NGC Objects: NGC 6700 - 6749     → (NGC 6750 - 6799)