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Karoline Herschel discovered 10 NGC objects using a small Newtonian comet seeker of 4.2" f/6.4 (magnification 30), build 1783 at Datchet. NGC 6819 was idependently found by Harding in 1824.
| NGC |
H |
Con |
Date |
Type |
| 189 |
CAS |
Sept. 27, 1783 |
open cluster |
|
| 225 |
VIII 78 |
CAS |
Sept. 27, 1783 |
open cluster |
| 253 |
V 1 |
SCL |
Sep. 23, 1783 |
galaxy |
| 659 |
VIII 65 |
CAS |
Sept. 27, 1783 |
open cluster |
| 2349 |
VII 27 |
MON |
Mar. 4, 1783 |
open cluster |
| 2360 |
VII 12 |
CMA |
Feb. 26, 1783 |
open cluster |
| 6819 |
CYG |
May 12, 1784 |
open cluster |
|
| 6866 |
VII 59 |
CYG |
July 23, 1783 |
open cluster |
| 7380 |
VIII 77 |
CEP |
Aug. 7, 1787 |
open cluster |
| 7789 |
VI 30 |
CAS |
Oct. 30, 1783 |
open cluster |
Karoline Herschel found 4 other NGC objects, using the comet seeker at Datchet, but all were discovered earlier by other observers:
- NGC 205 (M 110), the companion galaxy of M 31 in Andromeda, found by Messier Aug. 8, 1771, and by her Aug. 27, 1783
- NGC 752, open cluster in Andromeda, found by Hodierna 1654, and by her Sept. 29, 1783
- NGC 2548 (M 48), open cluster in Hydra, found by Messier Feb. 19, 1771, and by her Mar. 8, 1783
- NGC 6633, open cluster in Ophiuchus, found in 1745-46 by de Cheseaux, and by her July 31, 1783
All objects are contained in her observing log 1782-87, most of them are included (by their H designation) in William Herschel's three papers in the Philosophical Transactions 76, 457 (1786); 79, 212 (1789); 92, 477 (1802). See also the article by Jane Houston Jones, The Caroline Herschel Objects, Sky & Telescope Nov. 2002, 107.
Karoline Herschel is not involved in the discovery of NGC 381, NGC 891 and NGC 2204 (all discovered by William Herschel).