 |
(Royal Astronomical Society)
Denning discovered 18 IC objects with his 10" Newtonian from Bristol. All objects were found from 1890-92.
|
IC
|
Con
|
Date
|
Type
|
Ref
|
|
166 |
CAS |
1890 |
open cluster |
|
|
334 |
CAM |
Sep. 30, 1891 |
galaxy |
1 |
|
342 |
CAM |
Aug. 19, 1892 |
galaxy |
2 |
|
361 |
CAM |
Feb. 11, 1893 |
open cluster |
3 |
|
381 |
CAM |
Aug. 26, 1889 |
galaxy |
4 |
|
391 |
CAM |
Nov. 7, 1890 |
galaxy |
4 |
|
396 |
CAM |
Oct. 19, 1890 |
galaxy |
4 |
|
440 |
CAM |
Nov. 16, 1890 |
galaxy |
4 |
|
442 |
CAM |
Nov. 9, 1890 |
galaxy |
4 |
|
450 |
CAM |
1890 |
galaxy |
|
|
451 |
CAM |
1890 |
galaxy |
|
|
455 |
CEP |
Oct. 17, 1890 |
galaxy |
4 |
|
467 |
CAM |
Nov. 7, 1890 |
galaxy |
4 |
|
469 |
CEP |
Sep. 14, 1890 |
galaxy |
4 |
|
499 |
CAM |
Sep. 8, 1890 |
galaxy |
4 |
|
512 |
CAM |
Aug. 23, 1890 |
galaxy |
4 |
|
529 |
CAM |
1890 |
galaxy |
|
|
1454 |
CEP |
Aug. 9, 1891 |
planetary nebula |
1 |
Ref: [1] Notes on New and Old Nebulae, Obs. 15, 104 (1892); [2] Four New Nebulae, Obs. 13, 316 (1890); [3] The Cluster No. 361, Dreyer's Index Catalogue (1895), Obs. 41, 40 (1918); [4] New Nebulae, MNRAS 51,96 (1890).
There is now reference for 4 objects (and yet no exact date). One additional object was found by Denning, the galaxy IC 356 in Camelopardalis. He saw it on Nov. 11, 1890 (see [1]), but Barnard came first on Aug. 23, 1889 (AN #3097).
Obituary: MNRAS 92, 248 (1932); PASP 43, 361 (1931); AN 243, 63 (1931)
Biographical extract (Martin Beech)
