Historical Identification: Per Dreyer, NGC 6800 (= GC 4497 = JH 2041 = WH VIII 21, 1860 RA 19 21 23, NPD 65 08.4) is "a cluster, very large, pretty rich, very little compressed, stars from 10th magnitude". The position listed above is more or less in the middle of a wide scattering of brighter stars for which different catalogs list positions differing from each other by several arcmin. Dreyer's position precesses to RA 19 27 11.9, Dec +25 08 25, southeast of some listed positions but northwest of others, so the uncertainty in modern positions is larger than the difference between any of them and Dreyer's position, and the identification can be considered certain.
Physical Information: The cluster is a group of perhaps a hundred slightly brighter stars scattered across a region more than 20 arcmin in diameter.

Historical Identification: Per Dreyer, NGC 6801 (Swift list IV (#76), 1860 RA 19 24 26, NPD 35 54.5) is "extremely faint, pretty small, round, faint star near to south".
Physical Information: Apparent size 1.3 by 0.7? arcmin.

Historical Identification: Per Dreyer, NGC 6802 (= GC 4498 = JH 2042 = WH VI 14, 1860 RA 19 24 30, NPD 70 01.1) is "a cluster, large, very compressed, extended 0°, stars from 14th to 18th magnitude".
Discovery Notes: Herschel's published papers list the date of his first observation of WH VI 14 as Jul 11, 1784, but according to Steinicke, he had already observed it before (presumably during studies of double stars) on Sep 22, 1783, as shown above.
Physical Information: Apparent size 5? arcmin.

Historical Identification: Per Dreyer, NGC 6803 (Pickering (HN 52), 1860 RA 19 24 39, NPD 80 13) is a "planetary nebula, stellar". The position precesses to RA 19 31 18.9, Dec +10 04 31, a little over an arcmin to the northeast of the nebula (roughly equidistant from NGC 6803 and the 11th-magnitude star just to its north), but there is nothing else nearby that fits the description, so the identification is certain.
PGC Designation Note: For purposes of completeness, LEDA assigned a PGC designation to this object, even though it isn't a galaxy; however, a search of the database for that designation returns no result, so it is shown in quotes.
Physical Information: Stellar is indeed an appropriate description for NGC 6803, as it is only about 4 arcsec across, looks just like a star save at high magnification, and even then shows only the slightest hint of nebular structure. The main way in which amateurs can tell that such an object is a nebula is by using a filter (such as an OIII filter) that blocks most visible light, save for a narrow band centered on a wavelength at which interstellar gases emit their radiation. "Blinking" the field (viewing it with, then without such a filter) changes the brightness of normal stars far more than the brightness of nebulae, allowing the observer to pick out objects which don't change their brightness much. As it happens, that is not the way that Pickering discovered his planetaries. Instead, he placed an objective prism in the light-path of the telescope, which turned stellar images into short rainbows (or more accurately, since the eye cannot see color at low light levels, pale gray lines), but left nebulae as "stellar" objects, since they only emit light at a few wavelengths. The first pair of images below shows a normal closeup of NGC 6803 and a filtered view, in which the stars look much fainter. The following image shows a filtered closeup of the nebula superimposed on the "normal" image. The inset shows a 3 arcsec wide roughly circular core, surrounded by an almost as circular halo which extends another arcsec or so. Given estimates of the distance of the nebula (about 6 to 10 thousand light years from the Sun), the brighter core is a little over a tenth of a light year across, while the outer halo is a little less than twice that size.

Above and below, an example of how "blinking" a field (observing it with and without nebular filters such as an OIII filter) affects the appearance of stars and nebulae. Both images show a 50 arcsec wide image, and in each view NGC 6803 looks essentially stellar and relatively bright. But in the broad-spectrum visible light DSS image above, the background of nearby stars is also bright, while in the filtered view below (Image Credit Romano Corradi; used by permission) the stars are much fainter (in fact, I have enhanced the stellar images to make it easier to see that the fields of view are the same).

Historical Identification: Per Dreyer, NGC 6804 (= GC 4499 = JH 2043 = WH VI 38, 1860 RA 19 24 53, NPD 81 04.0) is "considerably bright, small, irregularly round, well resolved, clearly consisting of stars".
PGC Designation Note: For purposes of completeness, LEDA assigned a PGC designation to this object, even though it isn't a galaxy; however, a search of the database for that designation returns no result, so it is shown in quotes.
Physical Information: NGC 6804 is four to six thousand light years from the Sun. Apparent size 1.1? arcmin, corresponding to perhaps 1.3 light years physical extent.

Historical Identification: Per Dreyer, NGC 6805 (= GC 4500 = JH 3796, 1860 RA 19 27 18, NPD 128 51.5) is "extremely faint, round, very gradually brighter middle".
Physical Information: Apparent size 1.1 by 0.9? arcmin

Historical Identification: Per Dreyer, NGC 6806 (= GC 4501 = JH 3795, 1860 RA 19 27 19, NPD 132 36.3) is "extremely faint, very small, 14th magnitude star attached".
Physical Information: Apparent size 1.2 by 0.8? arcmin

Historical Identification: Per Dreyer, NGC 6807 (Pickering (HN 51), 1860 RA 19 27 41, NPD 84 36) is "a planetary nebula, stellar". The position precesses to RA 19 34 34.5, Dec +05 42 07, about an arcmin north of the correct position, an error similar to that of NGC 6803, which shares a similar description and appearance. That object is about 5 arcsec across, and barely distinguishable from a star at high magnification; but NGC 6807 is only 2 arcsec across, and appears perfectly stellar regardless of the magnification used to view it. So even more so than in the case of NGC 6803, distinguishing the nebula from a star relies on using filters (such as an OIII filter) which block all light save the line emission radiated by interstellar clouds of gas (see NGC 6803 for a discussion of the technique involved).
PGC Designation Note: For purposes of completeness, LEDA assigned a PGC designation to this object, even though it isn't a galaxy; however, a search of the database for that designation returns no result, so it is shown in quotes.
Physical Information: NGC 6807 is 15 to 20 thousand light years from the Sun. Given that, its apparent size (of 2 arcsec?) corresponds to a diameter of a sixth of a light year.

Below, the non-stellar nature of NGC 6807 is revealed in a ? arcmin wide monochromatic (black and white) HST image (this is a "raw" image which has had minimal post-processing to remove some cosmic ray artifacts). (Image Credit ESA, NASA, Hubble Legacy Archive)

Historical Identification: Per Dreyer, NGC 6808 (= GC 4502 = JH 3794, 1860 RA 19 28 30, NPD 160 57.5) is "pretty bright, extended, binuclear, 8th magnitude star to east".
Physical Information: Apparent size 1.6 by 0.9? arcmin

Historical Identification: Per Dreyer, NGC 6809 (= GC 4503 = JH 3798, Lacaille I 14, M 55, Dunlop 620, 1860 RA 19 31 08, NPD 121 15.7) is "a globular cluster, pretty bright, large, round, very rich, very gradually brighter middle, stars from 12th to 15th magnitude".
Physical Information: Apparent size 19? arcmin.

Historical Identification: Per Dreyer, NGC 6810 (= GC 4504 = JH 3797, 1860 RA 19 31 43, NPD 148 58.7) is "pretty small, round, very gradually brighter middle". The second IC adds "Not round, but considerably faint, small, considerably extended 170 degrees, stellar nucleus (DeLisle Stewart). h. called it once round, another time much extended", "h." being John Herschel.
Physical Information: Apparent size 1.2 by 0.9? arcmin.

Historical Identification: Per Dreyer, NGC 6811 (= GC 4505 = JH 2044, 1860 RA 19 33 59, NPD 43 44.8) is "a cluster, large, pretty rich, a little compressed, stars from 11th to 14th magnitude".
Physical Information: Apparent size 15? arcmin.

Historical Identification: Per Dreyer, NGC 6812 (= GC 4506 = JH 3799, 1860 RA 19 34 07, NPD 145 40.3) is "pretty bright, pretty small, pretty much extended, gradually a little brighter middle".
Physical Information: Apparent size 1.1 by 0.6? arcmin.

Historical Identification: Per Dreyer, NGC 6813 (= GC 5944, Marth #400, 1860 RA 19 34 41, NPD 63 01) is "a double star in a very faint, small nebula".
Physical Information: Apparent size 3.0 by 3.0? arcmin

Historical Identification: Per Dreyer, NGC 6814 (= GC 4507 = JH 2045 = WH III 744, 1860 RA 19 35 00, NPD 100 38.5) is "pretty faint, pretty large, round, brighter middle, mottled but not resolved".
Physical Information: Apparent size 3.0 by 2.8? arcmin

Historical Identification: Per Dreyer, NGC 6815 (= GC 4508 = JH 2046, 1860 RA 19 35 07, NPD 63 30.9) is "a cluster, very large, pretty rich, a little compressed, stars from 10th to 15th magnitude".
Physical Information:

Historical Identification: Per Dreyer, NGC 6816 (= GC 4509 = JH 3800, 1860 RA 19 35 16, NPD 118 52.7) is "extremely faint, pretty small, round, a very little brighter middle, star to northwest". The second IC says "Delete 'star to northwest' (not in Cape Obs.). There is a 14th magnitude star in position angle 20 degrees, distance 30 arcsec (per Howe)".
Physical Information: Apparent size 1.2 by 0.8? arcmin.

Historical Identification: Per Dreyer, NGC 6817 (Swift list II (#81), 1860 RA 19 35 26, NPD 27 55.6) is "most extremely faint, pretty small, a little extended".
Physical Information: Apparent size 0.7 by 0.6? arcmin. Listed in NED as NGC 6817 NED02.

Historical Identification:
Physical Information: Apparent size 0.2 by 0.2? arcmin

Historical Identification: Per Dreyer, NGC 4510 = JH 2047 = WH IV 51, 1860 RA 19 36 04, NPD 104 29.0) is "a planetary nebula, bright, very small, round".
PGC Designation Note: For purposes of completeness, LEDA assigned a PGC designation to this object, even though it isn't a galaxy; however, a search of the database for that designation returns no result, so it is shown in quotes.
Physical Information: Between five and eight thousand light years away. Apparent size 0.45 by 0.4 arcmin.

Historical Identification: Per Dreyer, NGC 6819 (= GC 4511 = JH 2048, Harding 1827, 1860 RA 19 36 30, NPD 50 08.5) is "a cluster, very large, very rich, stars from 11th to 15th magnitude".
Discovery Notes: Caroline Herschel's observations were not noted in her brother's published papers, so Dreyer was often unaware of them; and since William Herschel didn't publish this object at all, her absence in the NGC entry is unsurprising. Also, though Dreyer (and John Herschel) listed "Harding 1827" that was the date of his published paper, not the date of this observation.
Physical Information: Apparent size 5.0? arcmin

Historical Identification: Per Dreyer, NGC 6820 (= GC 5945, Marth #401, 1860 RA 19 36 32, NPD 67 15) is "faint, small, round, brighter middle".
Physical Information: Apparent size 0.5 by 0.5? arcmin (a knot in Sharpless 2-86)

Historical Identification: Per Dreyer, NGC 6821 (= GC 5946, Marth #402, 1860 RA 19 36 54, NPD 97 09) is "faint, pretty large, round".
Physical Information: Apparent size 1.3 by 1.1? arcmin

Historical Identification: Per Dreyer, NGC 6822 (Barnard, 1860 RA 19 37 03, NPD 105 06) is "very faint, large, extended, diffuse". The second IC says (per Howe) "Not large but very small". Dreyer and his successors made a number of mistakes in listing this galaxy and various parts of it which acquired NGC/IC listings of their own. A later iteration of this page will include a labeled version of the image below, to show which numbers correspond to which regions; but for now, refer to Steinicke's article for a discussion of the confusion involving the discovery (and mis-discovery) of this galaxy.
Physical Information: The recessional velocity of NGC 6822 is -55 km/sec, meaning it is so close that its Hubble expansion velocity is less than its peculiar (non-Hubble expansion) velocity, and its distance cannot be determined from the velocity (although it can be inferred that it is very close, intergalactically speaking). Redshift-independent distance estimates range from 1.4 to 2.3 million light years, with a "best" estimate of 1.65 million light years, making it one of the closest galaxies known, and a member of the Local Group of galaxies (which includes our Milky Way Galaxy and the Andromeda Galaxy). Because of its proximity NGC 6822 appears large (about 15.5 by 14 arcmin), but it is actually a dwarf galaxy, only about 8 thousand light years across.

Historical Identification: Per Dreyer, NGC 6823 (= GC 4512 = JH 2049 = WH VII 18, 1860 RA 19 37 14, NPD 67 01.8) is "a cluster, considerably rich, extended, stars from 11th to 12th magnitude".
Physical Information: Apparent size 7.0? arcmin

Historical Identification: Per Dreyer, NGC 6824 (= GC 4513 = WH II 878, d'Arrest, 1860 RA 19 40 39, NPD 34 13.6) is "pretty bright, irregularly faint, brighter middle".
Physical Information: Apparent size 1.9 by 1.4? arcmin

Historical Identification: Per Dreyer, NGC 6825 (Swift list II (#82), 1860 RA 19 40 45, NPD 26 16.0) is "extremely faint, very small, very difficult, faint star near".
Physical Information: Apparent size 0.5 by 0.3? arcmin

Historical Identification: Per Dreyer, NGC 6826 (= GC 4514 = JH 2050 = WH IV 73, 1860 RA 19 41 02, NPD 39 48.8) is "a planetary nebula, bright, pretty large, round, 11th magnitude star in middle".
Note About PGC Designation: As is true of almost all NGC/IC objects, HyperLEDA assigned a PGC Designation to this object, even though it isn't a galaxy; but as in most such cases, a search for that designation returns no result, hence its being placed in quotes.
Physical Information: NGC 6826 is three to five thousand light years from the Sun. Apparent size 0.6? arcmin.

Below, a ? arcmin wide HST image of the central portion of the nebula (Image Credit Bruce Balick (University of Washington), Jason Alexander (University of Washington), Arsen Hajian (U.S. Naval Observatory), Yervant Terzian (Cornell University), Mario Perinotto (University of Florence, Italy), Patrizio Patriarchi (Arcetri Observatory, Italy) & NASA)

Historical Identification: Per Dreyer, NGC 6827 (Stephan list IX (#25), 1860 RA 19 42 47, NPD 69 08.0) is "very faint, extended, diffuse, several stars involved".
Physical Information: Apparent size 2.0? arcmin

Historical Identification: Per Dreyer, NGC 6828 (= GC 4515 = JH 2051 = WH VIII 73, 1860 RA 19 43 30, NPD 82 26.4) is "a cluster, poor, a little compressed".
Physical Information:

Historical Identification: Per Dreyer, NGC 6829 (Swift list IV (#77), 1860 RA 19 44 59, NPD 30 26.7) is "extremely faint, pretty small, round, pretty bright star close to south, western of 2", the other being NGC 6831.
Physical Information: Apparent size 1.6 by 0.4? arcmin

Historical Identification: Per Dreyer, NGC 6830 (= GC 4516 = JH 2052 = WH VII 9, 1860 RA 19 45 04, NPD 67 15.8) is "a cluster, large, pretty rich, pretty compressed, stars from 11th to 12th magnitude".
Physical Information: Apparent size 6.0? arcmin

Historical Identification: Per Dreyer, NGC 6831 (Swift list IV (#78), 1860 RA 19 45 44, NPD 30 26.7) is "extremely faint, small, round, eastern of 2", the other being NGC 6829.
Physical Information: Apparent size 1.4 by 1.4? arcmin

Historical Identification: Per Dreyer, NGC 6832 (= GC 4517 = JH 2053, 1860 RA 19 45 44, NPD 30 55.9) is "a cluster, very large, a little compressed, stars from the 7th magnitude".
Physical Information: Apparent size 12? arcmin

Historical Identification: Per Dreyer, NGC 6833 (Pickering (HN 54), 1860 RA 19 45 47, NPD 41 23.5) is "a planetary nebula, stellar". As for NGC 6803 and 6807, which share the same discoverer and description, the 5 arcsec disc of NGC 6833 is indistinguishable from a star in visual or broad-spectrum photographic surveys. Only the use of filters (such as an OIII filter) which block most wavelengths but pass the radiation emitted by interstellar gases allows an observer to tell the difference between ordinary stars, which look fainter when viewed through such filters, and planetary nebulae, which remain about the same brightness.
PGC Designation Note: For purposes of completeness, LEDA assigned a PGC designation to this object, even though it isn't a galaxy; however, a search of the database for that designation returns no result, so it is shown in quotes.
Physical Information: NGC 6833 probably lies in the next spiral arm out from the center of our galaxy, or even in the inner halo beyond that arm, which would put it at least seven thousand light years from the Sun, and most likely considerably further.

Below left, a HST closeup of the star shows a faint outer disk about 5 arcsec in width (Image Credit Hubble Legacy Archive). Below right, a composite HST image shows a low-ionization region about one arcsec in size centered on the star (Image Credit WFPC2/PC Casertano GO6943, NASA/ESA/STScI, Hubble Archives)

Historical Identification: Per Dreyer, NGC 6834 (= GC 4518 = JH 2054 = WH VIII 16, 1860 RA 19 46 34, NPD 60 57.1) is "a cluster, poor, a little compressed, stars from 11th to 12th magnitude".
Physical Information: Apparent size 6.0? arcmin

Historical Identification: Per Dreyer, NGC 6835 (Stephan list XII (#91), 1860 RA 19 46 45, NPD 102 55.8) is "faint, pretty large, much extended".
Physical Information: Apparent size 2.4 by 0.7? arcmin

Historical Identification: Per Dreyer, NGC 6836 (Stephan list XII (#92), 1860 RA 19 46 53, NPD 103 02.9) is "very faint, pretty large, round, diffuse". The second IC adds (per Howe) "13.5 magnitude star attending to east".
Physical Information: Apparent size 1.7 by 1.5? arcmin.

Historical Identification: Per Dreyer, NGC 6837 (= GC 4519 = JH 2055 = WH VIII 18, 1860 RA 19 46 53, NPD 78 40.5) is "a cluster, small, poor".
Physical Information: Apparent size 3.0? arcmin.

Historical Identification: Per Dreyer, NGC 6838 (= GC 4520 = JH 2056, Méchain, M 71, 1860 RA 19 47 30, NPD 71 35.1) is "a cluster, very large, very rich, pretty much compressed, stars from 11th to 16th magnitude".
Physical Information: About 30 light years across and 12 thousand light years away (8 arcmin wide?). Perhaps a massive "open" cluster, rather than a globular (its age would determine the difference).

Historical Identification: Per Dreyer, NGC 6839 (= GC 4521 = JH 2057 = WH VI 16?, 1860 RA 19 48 14, NPD 72 28.4) is "a cluster, very small, very compressed".
Physical Information: Apparent size 4.0? arcmin

Historical Identification: Per Dreyer, NGC 6840 (= GC 4522 = JH 2058 = WH VIII 19, 1860 RA 19 48 42, NPD 78 15.6) is "a cluster, poor, a little compressed".
Physical Information: Apparent size 4.0? arcmin

Historical Identification: Per Dreyer, NGC 6841 (= GC 4523 = JH 3802, 1860 RA 19 48 58, NPD 122 11.5) is "very faint, small, round, pretty suddenly brighter middle".
Physical Information: Apparent size 1.5 by 1.4? arcmin

Historical Identification: Per Dreyer, NGC 6842 (= GC 5947, Marth #403, d'Arrest, (Safford #??), 1860 RA 19 49 19, NPD 61 05.4) is "faint pretty large, very little extended".
Discovery Notes: Safford's observations were not published until many years after the fact, so Dreyer was not aware of them until in the final stages of preparing the NGC for publication. As a result Safford's observations are only noted in an appendix, and none of the NGC entries mention his name (hence its being shown here in parentheses).
PGC Designation Note: For purposes of completeness, LEDA assigned a PGC designation to this object, even though it isn't a galaxy; however, a search of the database for that designation returns no result, so it is shown in quotes.
Physical Information: Apparent size 0.95? arcmin

Historical Identification: Per Dreyer, NGC 6843 (= GC 4524 = JH 2059, 1860 RA 19 49 32, NPD 78 12.6) is "a cluster, small, poor".
Physical Information: Apparent size 4.0? arcmin

Historical Identification: Per Dreyer, NGC 6844 (= GC 4525 = JH 3801, 1860 RA 19 49 43, NPD 155 36.8) is "extremely faint, very small, round, pretty suddenly brighter middle, 11th magnitude star to northwest".
Physical Information: Apparent size 1.4 by 1.1? arcmin

Historical Identification: Per Dreyer, NGC 6845 (= GC 4526 = JH 3803, 1860 RA 19 50 50, NPD 137 27.5) is "very faint, small, very little extended, gradually a little brighter middle".
Physical Information: Apparent size 2.3 by 1.0? arcmin

Physical Information: Apparent size 1.1 by 0.6? arcmin

Physical Information: Apparent size 0.6 by 0.2? arcmin

Physical Information: Apparent size 0.7 by 0.2? arcmin

Historical Identification: Per Dreyer, NGC 6846 (= GC 5948, Stephan list V (#4), 1860 RA 19 51 02, NPD 58 01.0) is "extremely faint, very small, 3 stars involved".
Physical Information: Apparent size 0.8? arcmin

Historical Identification: Per Dreyer, NGC 6847 (= GC 4527 = WH II 202, 1860 RA 19 51 23, NPD 61 01.7) is "a nebula, mottled but not resolved".
Physical Information:

Historical Identification: Per Dreyer, NGC 6848 (= GC 4528 = JH 3804, 1860 RA 19 51 33, NPD 146 28.3) is "considerably faint, considerably large, round, very gradually a little brighter middle, 2 stars to east".
Physical Information: Apparent size 2.4 by 1.0? arcmin

Historical Identification: Per Dreyer, NGC 6849 (= GC 4529 = JH 3805, 1860 RA 19 51 48, NPD 130 35.4) is "pretty bright, small, round, very small star to northwest".
Physical Information: Apparent size 1.9 by 1.1? arcmin