Miss Fleming discovered 43 IC objects. She inspected plates taken with Harvard's Bache telescope, an 8" f/5.5 refractor, which could be equipped with an objective prism. It was first used at Harvard College Observatory and transported to Arequipa in spring 1889 (see e.g. PASP 4, 58 (1892)). The objects in Orion were found on a plate, taken at Harvard. The othe objects, mostly Planetary Nebulae, were discovered from plates taken at Arequipa with the aid of the objective prism. HN stands vor "Harvard nebula" (see Ref. 6). Some objects were credited by Dreyer to Pickering.

IC	HN	Con	Date	Type	Ref	Rem
418	69	LEP	Mar. 26, 1891	planetary nebula	2, 6	Pickering
420	63	ORI	Jun. 27, 1888	emission nebula	1, 6	Pickering
421	66	ORI	Jun. 27, 1888	galaxy	1, 6	Pickering
423	58	ORI	Jun. 27, 1888	emission nebula	1, 6	Pickering
424	56	ORI	Jun. 27, 1888	reflexion nebula	1, 6	Pickering
426	57	ORI	Jun. 27, 1888	reflexion nebula	1, 6	Pickering
427	67	ORI	Jun. 27, 1888	emission nebula	1, 6	Pickering
428	64	ORI	Jun. 27, 1888	emission nebula	1, 6	Pickering
430	65	ORI	Jun. 27, 1888	reflexion nebula	1, 6	Pickering
431	61	ORI	Jun. 27, 1888	reflexion nebula	1, 6	Pickering
432	60	ORI	Jun. 27, 1888	reflexion nebula	1, 6	Pickering
435	59	ORI	Jun. 27, 1888	reflexion nebula	1, 6	Pickering
1266		ARA	1894	planetary nebula	3	Pickering
1292		SGR	1894	not found	4
1297		CRA	1894	planetary nebula	3, 6	Pickering
1644	83	TUC	1901	emission nebula	6
1747	103	CAS	1905	planetary nebula	6
2105	84	DOR	1901	emission nebula	6
2111	85	DOR	1901	emission nebula	6
2117	89	DOR	1901	emission nebula	6
2145	92	DOR	1901	emission nebula	6
2149	105	AUR	1906	planetary nebula	6
2165	79	CMA	1898	planetary nebula	6
2189	75	CMI	1894	star	5, 6
2206	76	PUP	1895	2 stars	5, 6
2448	80	CAR	1898	planetary nebula	6
2501	101	CAR	1904	planetary nebula	6
2553	70	CAR	1893	planetary nebula	6
4191	107	MUS	1907	planetary nebula	6
4544	71	NOR	1893	not found	6
4593	108	HER	1907	planetary nebula	6
4634	72	OPH	1894	planetary nebula	6
4637	95	SCO	1901	planetary nebula	6
4642	96	ARA	1901	planetary nebula	6
4663	97	SCO	1901	planetary nebula	6
4699	98	TEL	1901	planetary nebula	6
4732	99	SGR	1901	planetary nebula	6
4776	77	SGR	1896	planetary nebula	6
4816	81	SGR	1899	galaxy	6
4846	100	AQL	1901	planetary nebula	6
4850	82	AQL	1901	emission nebula	6
5117	104	CYG	1905	planetary nebula	6
5217	102	LAC	1904	planetary nebula	6

References: [1] Pickering, E. C., Detection of Nebulae by Photography, Ann. Harv. Obs. 18, 113-117 (1890); [2] Stars having Peculiar Spectra, AN [3049] 128,11-14 (1891); [3] Stars having Peculiar Spectra, AN [3227] 135, 195-198 (1894); [4] Stars having Peculiar Spectra, AN [3269] 137, 71-74 (1894); [5] Stars having Peculiar Spectra. Eleven New Variable stars, AN [3299] 138, 175-180 (1895), [6] Pickering, E. C., Nebulae discovered at the Harvard College Observatory, Ann. Harv. Obs. 60, 147-194 (1908)

There are Fleming objects in the IC, seen first by other observers (most by J. Herschel from his Cape observations 1834-38).

Obituary: MNRAS 72, 261 (1912); ApJ 34, 314 (1911)

 

Harvard Observatory and Spectroscope