Steve Gottlieb's NGC/IC Notes on Dunlop's galaxies are as follows
http://adventuresindeepspace.com/steve.ngc.htm
NGC 1512
James Dunlop discovered NGC 1512 = D 466 = h2607 on 29 Oct 1826 and described "a small faint round nebula, about 25" diameter, a little brighter in the centre: a star of 10th or 12th magnitude preceding the nebula [HD 25651]." Dunlop made a single observation and his position is 10' SE of the galaxy (typical error).
NGC 1515
James Dunlop discovered NGC 1515 = D348 = h2609 on 5 Nov 1826 using his 9-inch f/12 reflector from Parramatta. He found "a very faint nebula, about 35 arcseconds diameter. This precedes a group of small stars." His position is 1 min 15 sec of RA too far east (typical error) and a group of mag 12 stars follows, clinching the identification. John Herschel first observed this galaxy on 5 Dec 1834 and logged "B, L, very much extended, gradually brighter in the middle; 3' l, 40" br".
NGC 1527
James Dunlop discovered NGC 1527 = D 409 = D 429 = h2612 on 28 Sep 1826 and described "a very small and very faint round nebula, about 20" diameter." His position was 10' too far NE. D 429 is probably a duplicate observation with a 55' error in declination (too far north).
NGC 1532
James Dunlop discovered NGC 1532 = D 600 = h2621 on 29 Oct 1826. He described "an extremely faint ill-defined nebula, rather elongated in the direction of the meridian [N-S], gradually a little brighter towards the centre." His notes mention it was situated southwest of a pretty bright star, which is mag 7.0 HD 26799.
NGC 1543
James Dunlop discovered NGC 1543 = D 306 = h2627 on 5 Nov 1826 with his 9" reflector and described as "a small round pretty well defined nebula, 10" or 12" diameter, slightly bright to the centre, a bright star in the field south following." Dunlop's position is 11' too far south.
NGC 1553
James Dunlop discovered NGC 1553 = D 331 on 5 Nov 1826 and described "a rather bright nebula about 1' diameter, very faint at the margin, gradually bright to the centre: a small star north, and another south, both involved in the margin of the nebula. A group of very small stars north." Dunlop made a transcription error of 1 hour in RA so his published position is 1 hour too large. His two notebook entries are only 10' too far south. I'm surprised Dunlop apparently missed NGC 1549. He mentioned "a group of very small stars north", which are just off the south side of NGC 1549.
NGC 1559
James Dunlop discovered NGC 1559 = D 264 = h2634 on 6 Nov 1826. He made two observations with summary description, "faint round nebula, about 40" diameter, slightly bright to the centre; this is north preceding Theta Rhomboidis". His published position is 18' too far south (accurate in RA) as he overestimated the separation from Theta Ret.
NGC 1566
James Dunlop discovered NGC 1566 = D 338 = h2635 on 28 May 1826 with his 9" reflector from Parramatta and described "a pretty large round nebula, about 4' diameter, moderately and gradually condensed to the centre. A very small star near the following edge, not involved." His handwritten notes also mention a "pretty bright star precedes it and about 3' to 4' north", matching Mag 8.2 HD 27713, which is 5.4' NW of center.
NGC 1617
James Dunlop discovered NGC 1617 = D 339 on 5 Nov 1826 and described "a small round pretty well defined nebula, bright in the centre, NW of Alpha Doradus". His position was off by 11.5' (typical error) to the SE. John Herschel observed the galaxy on 5 Dec 1834 and logged (for h2651), "B, L, mE, first very gradually then very suddenly much brighter to the middle to a nucleus 5" in diameter; 3' long, 1' broad." The next night he reobserved it and noted "pB, L, mE, suddenly brighter in the middle, 3' long, 2' broad, pos. 105.8 degrees." His mean position is accurate.
IC 1633
James Dunlop discovered IC 1633 = D 437 = Sw. 11-13 on 5 Aug 1826 and recorded (single observation) "an extremely faint small nebula; round, with a very minute bright point in the center." Dunlop's position is 6.6' SW of ESO 243-046, but this is a typical error and there no other brighter galaxies nearby. Lewis Swift independently discovered this galaxy on 29 Sep 1897, assumed it was new, and logged Sw. 11-13 as "vF; S; R; no B* near; vF one following." In his 4th list from Lowe Observatory, the declination was off by 2° too far north, but this error was corrected in his large Astronomische Nachrichten (AN) table.
NGC 1672
James Dunlop discovered NGC 1672 = D 296 = h2665 on 5 Nov 1826. He described "a faint ill-defined nebula about 50" diameter, irregularly round with a small bright point near the preceding side, which I suspect to be a star; a pretty bright star about 20' south-preceding [mag 5.3 Kappa Dor] and also another following [mag 6.8 HD 30790]."
NGC 1792
James Dunlop discovered NGC 1792 = D 531 = h2730 on 4 Oct 1826 and described "a long or rather elliptical nebula, about 2' long and 50" broad, a little brighter in the middle, and well defined. There is a group of small stars on the north side."
NGC 1808
James Dunlop discovered NGC 1808 = D 549 = D 532 = h2740 on 10 May 1826. Based on two observations he described "a faint nebula, about 2.5' long, and fully 1' broad, extended S.p. and N.f.; a very minute star near each extremity, not involved." D 532 is another observation and he noted it was very similar to D 531 = NGC 1792 (observed together), but he made a large error (nearly 40') in declination.
NGC 1947
James Dunlop discovered NGC 1947 = h2855 on 5 Nov 1826 with his 9" reflector, although due to an oversight he failed to include it in his 1828 catalogue (NGC 6300 and Tr 9 are two more cases). His handwritten notes read, "a faint round nebula 25" or 30" diameter, pretty well defined, south following a small star." His position is 7' too far SW and 4' NNW is mag 9.7 HD 36355, consistent with his description.
NGC 2090
James Dunlop discovered NGC 2090 = D 594 = h2944 on 29 Oct 1826. He described "a small faint nebula, with a ray shooting out on the north side." Dunlop observed this galaxy only once and his position was only 3' SSW. The "ray" he mentions perhaps consists of 3 mag 13-14 stars. John Herschel recorded the galaxy twice, on 8 Jan 1836 (sweep 662) recording a "globular cluster, B; R; with an appendage to northward; 2.5' diameter." The following night he described it as "B, irreg R, gradually brighter in the middle; 3' long; 2' broad with stars appended. This RA to be preferred". Herschel called this galaxy a globular in the GC and Dreyer followed in the NGC.
NGC 4696
James Dunlop discovered NGC 4696 = D 510 = D 511 = h3424 on 7 May 1826. He described D 510 (from handwritten notes) as a "faint nebula, about 12" or 15" diameter, very ill defined at the edges, slightly condensed to the center, 14' or 15' south - rather preceding - a star 7th mag." His position was 16' too far NW. D 511 was logged as a "pretty large faint nebula." and his position was 12' too far SE. Neither of these positional discrepancies are unusually large.
NGC 4709
James Dunlop probably discovered NGC 4709 = h3428 = D 511? on 7 May 1826 and reported "pretty large faint nebula". His position (single observation) is 6.7' SW of NGC 4709.
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