Box 20: RGO 43/187-200
Container
Contains 14 Results:
File
Measurement of miscellaneous chronograph plates from the Photographic Zenith Tube (PZT) at Herstmonceux, 21 August - 17 September 1955
File
Reference Code: GBR/0180/RGO 43/187
Scope and Contents
From the Sub-Series:
Please note: further PZT files are described later in the catalogue.
Dates:
21 August - 17 September 1955
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
File
Notes on the reconditioning and refurbishing of the Photographic Zenith Tube (PZT), 1973 - 1974
File
Reference Code: GBR/0180/RGO 43/192
Scope and Contents
Also includes undated notes on the refurbishing and automation of the PZT, and a typed report by N.P.J. O'Hara on the 'Reconditioning of the PZT', Nov. 1973. O'Hora also produced two other reports: 'A scheme for refurbishing the PZT', Jun. 1974, and 'Staff saving in PZT operations', July 1974.
Dates:
1973 - 1974
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
File
Correspondence of the Royal Greenwich Observatory concerning the role of the Photographic Zenith Tube (PZT) in gathering data for the Jet Propulsion Laboratory project, California, USA, 1971 - 1973
File
Reference Code: GBR/0180/RGO 43/193
Scope and Contents
Comprises: an information letter and raw results sheet from the Bureau Internationale de l'Heure to the RGO, together with a list of other participating observatories, Nov. 1971. Also included is correspondence from the JPL project to the BIH, Sept. 1971; the Pioneer/Jupiter bulletin, Nov. 1973; and the Mariner/Venus bulletin, Dec. 1973.
Dates:
1971 - 1973
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
Item
Comparison of the time determinations of the Photographic Zenith Tube (PZT), at Herstmonceux and at Washington, USA, respectively, 1956 - 1960
Item
Reference Code: GBR/0180/RGO 43/195
Scope and Contents
From the Sub-Series:
Please note: further PZT files are described later in the catalogue.
Dates:
1956 - 1960
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
Item
Diagrams of the drive system of the Photographic Zenith Tube (PZT), together with a 'Brief description of the PZT time equipment, undated [c.1955-1984]
Item
Reference Code: GBR/0180/RGO 43/196
Scope and Contents
Comprises two diagrams. The papers are undated.
Dates:
undated [c.1955-1984]
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
Item
Calculations to measure the Right Ascendant, using the Photographic Zenith Tube (PZT), c.1959
Item
Reference Code: GBR/0180/RGO 43/197
Scope and Contents
Includes two diagrams.
Dates:
c.1959
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
File
Azimuth test and plates, 1963
File
Reference Code: GBR/0180/RGO 43/199
Scope and Contents
From the Sub-Series:
Please note: further PZT files are described later in the catalogue.
Dates:
1963
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
File
Information on the Photographic Zenith Tube (PZT) observing programme for 1958 and notes on results, 1957 - 1958
File
Reference Code: GBR/0180/RGO 43/200
Scope and Contents
From the Sub-Series:
Please note: further PZT files are described later in the catalogue.
Dates:
1957 - 1958
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
File
Photographic Zenith Tube (PZT) plate carriage tests, with the azimuth determination test of the carriage plate motion, 1955 - 1956
File
Reference Code: GBR/0180/RGO 43/198
Scope and Contents
From the Sub-Series:
Please note: further PZT files are described later in the catalogue.
Dates:
1955 - 1956
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
File
'Stepping on' tests on chronograph plate, undated [c.1950s]
File
Reference Code: GBR/0180/RGO 43/188
Scope and Contents
Data file, with a glass slide connected with the same tests.
Dates:
undated [c.1950s]
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
File
Chronograph tests taken at night, 21 Sept. 1955, together with Photographic Zenith Tube (PZT) measurements of one second differences, 1955
File
Reference Code: GBR/0180/RGO 43/189
Scope and Contents
From the Sub-Series:
Please note: further PZT files are described later in the catalogue.
Dates:
1955
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
File
Calculations assessing the effect of tides on the Photographic Zenith Tube (PZT), 1956
File
Reference Code: GBR/0180/RGO 43/190
Scope and Contents
The first integration for variation in the north-south deflexion. Harmonic tidal constants from 1877-1952 are included here [most are missing]. The second integration contain further calculations. Tests conducted in November 1956.
Dates:
1956
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
File
Tests on Loran-C time tracking, 1977 - 1980
File
Reference Code: GBR/0180/RGO 43/191
Scope and Contents
From the Sub-Series:
Please note: further PZT files are described later in the catalogue.
Dates:
1977 - 1980
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
File
Notes on the refurbishing intended for the Enslen Photographic Zenith Tube, undated [c.1955-1984]
File
Reference Code: GBR/0180/RGO 43/194
Scope and Contents
With a report in German, undated.
Dates:
undated [c.1955-1984]
Conditions Governing Access:
From the Series:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.