Harvard-Smithsonian Center for Astrophysics Harvard University Plate Stacks Plate Characteristics

Based on the collection summary as of 2002-10-31, this table was last updated 2007-04-23 ii

Series	Aperture (in.)	Scale "/mm	Scale '/inch	+-dec	at d=0 +-ra	N/S	Total	Years	Limit	Q	Logs	Remarks
A	24	60	0.42	2.9	14.3	S	27504	1893-1950	18	5	Scanned logs	primary (Some early plates northern hemisphere)
ADH	30	68	0.48	2.4	9.6	S	7067	1950-1963	18-19	4	Not scanned	Circular plates, north edge at mark
AC	1.5	600	4.23	21.1	67.7	N/S	42749	1898-1957	13-14	3	Scanned logs	primary
AI	1.5	1200	----	----	----	N	44730	1901-1958	--	2	Scanned logs	bright_objects
AM	1.5	600	4.23	21.1	67.7	N/S	28562	1898-1957	13-14	3	Scanned logs	primary
AX	3.0	700	4.93	24.6	79.0	N/S	4833	1922-1954	13-14	3	Scanned logs	primary
AY	2.6	700	4.93	24.6	79.0	N	1974	1923-1927	13-14	3	Scanned logs	primary
B	8	179	1.26	6.3	20.2	S	76874	1885-1954	17	4	Scanned logs	primary
BM	3	390	2.76	13.8	44.2	N	3222	1934-1941	15	3	Scanned logs	primary
BR	8	209	1.46	7.3	23.4	S	4176	1938-1944	17	4	Scanned logs	like MF
C	11	84	0.59	2.4	5.9	N	23270	1886-1947	--	2	Scanned logs	Mostly spectra; limited use
DNB	1.6	580	4.09	20.5	65.4	N	6711	1962-1989	15	5	Scanned logs	**Patrol (>1962)
DSB	1.6	580	4.09	20.5	65.4	S	2895	1962-1989	15	5	Scanned logs	**Patrol (>1962)
FA	1.5	1200	8.46/td>	21.1	67.7	N	13884	1901-1958	--	2	Scanned logs	bright_objects
H	24	60	0.42	0.9	3.6	N	6644	1906-1953	--	3	Scanned logs	Reflector (small field)
I	8	163	1.14	5.7	18.2	N	59246	1889-1946	17	4	Scanned logs	primary
IR	8	162	1.13	5.6	18.0	N	12798	1934-1976	17	4	Scanned logs	--
J	24	98	0.68	2.7	10.8	N	4770	1942-1957	--	3	Scanned logs	Schmidt; square plates, N-S diagonal
MA	12	97	0.68	3.4	10.9	N	11737	1905-1983	17-18	5	Scanned logs	primary
MB	4	193	1.4	6.8	22	N	2722	1914-1932	--	2	Scanned logs	MA piggy-back
MC	16	98	0.68	2.7	13.6	N	40596	1909-1992	17-18	5	Scanned logs	primary
MD	4	193	1.36	6.8	21.7	N	30000	1911-	11	2	Not scanned	MC piggy-back
MF	10	167	1.17	5.8	18.7	S	40897	1915-1955	17	4	Scanned logs	primary(Some early plates N)
R	3	390	2.75	13.8	44.2	S	320	1937-1958	15	3	Scanned logs	Radcliffe College
RB	3	391	2.76	13.8	44.2	S	17030	1928-1963	15	3	Scanned logs	primary
RH	3	391	2.76	13.8	44.2	N	16178	1928-1963	15	3	Scanned logs	primary
RL	4	290	2.05	8.2	32.8	N	5062	1933-1962	--	--	Scanned logs	--
SB	60	26.3	.18	.36	.45	S	6396	1933-1955	--	--	Scanned logs	4x5 plates, Asteroids (Reflectors)
SH	60	25.0	.18	.36	.45	N/S	13830	1934-1989	--	--	Scanned logs	4x5 plates, Asteroids (Reflectors)
Superschmidt	12	1200	8.4	27	108	N	30000	1953-1968	--	--	Not scanned	Meteor films (circular, molded)
X	13	42	.29	1.2	5.8	S	19090	1888-1951	--	--	Scanned logs	primary (4x5 and 8x10 plates)