| RefNo | MS/312/4 |
| Previous numbers | MS/315 |
| Level | File |
| Title | Volume IV, sunspot observations made at Kew Observatory, by Warren de la Rue |
| Date | 4 January 1865-3 May 1865 |
| Description | Tables of Warren de la Rue's astronomical observations recording sunspot activity between January and May 1865, accompanied with albumen prints. Data recorded is indicated at the start of the volume, with each data set represented by a letter of the alphabet, as follows: A) Name of spot; B) Reading of vernier on A Slide; C) Distance from apparent centre of the sun; D) Radial distance; E) Observed angle of position; F) Distance from optical centre of instruments.
Part of the Kew Observatory project to capture daily images of the sun and track sun-spots over time, using the photoheliograph built for this purpose by Warren de la Rue. This pursuit was first suggested by Sir Jon Herschel and executed by Warren de la Rue from February 1862 to late January 1871.
Notes include comments on the quality of individual photographs. |
| Extent | 1 volume: pp. 1-150 |
| Format | Photograph |
| Manuscript |
| PhysicalDescription | Ink on paper. Contains photographic prints. |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA3837 | Rue; Warren de la (1815 - 1889); chemist and astronomer | 1815 - 1889 |