Dataset
NGDC Scanned images
Abstract
The digitising of the Royal Observatory Greenwich Photo-Heliographic Results was a joint project between the National Geophysical Data Center (NGDC) and the UK Solar System Data Centre (UKSSDC), in order to preserve the physical copies as well as to easily distribute the copies. The originals are held at NGDC and UKSSDC if required.
The difference in the quality of copies comes from the different methods used to digitise the Photo-Heliographic Results.
Publications containing errors have been annotated to link errors to the relevant errata. Annotated PDFs are marked with the suffix "(Annotated)".
The data in the 1874 and 1875 books are presented in a format that was changed after a few years. The data are repeated in the '1877 Greenwich Astronomical Results' book with angles given in degrees and minutes, and is repeated again in the '1874-1885 Greenwich Photo-Heliographic Results' book in decimal degrees (the format used from 1881 December 22).
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: http://creativecommons.org/licenses/by/4.0/. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
needed |
| File Format: |
Data are ASCII text formatted
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Related Documents
Process overview
No variables found.
Temporal Range
1974-01-01T00:00:00
1976-12-31T23:59:59
Geographic Extent
90.0000° |
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-180.0000° |
180.0000° |
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-90.0000° |