Karoline Lucretia Herschel

 

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).