Record

PP - Proceedings Papers
- 16 - Scientific papers published in the Proceedings of the Royal Society volume 48, 1890

RefNo	PP/16/18
Previous numbers	PP/48/18
Level	Item
Title	Paper, 'Preliminary note on photographs of the spectrum of the nebula in Orion' by J [Joseph] Norman Lockyer
Date	1890
Description	Lockyer writes: 'In other communications to the Society, I have shown that the chief nebula line coincides absolutely in position with the remnant of the fluting seen in the flame of burning magnesium near λ 500, with the highest dispersion we could command at South Kensington. Attempts have recently been made, therefore, with the 30-inch reflector at Westgate-on-Sea, to obtain photographs of the spectrum of the nebula, using magnesium as the term of comparison. The objects sought were, primarily, to determine whether there was a line in the nebula corresponding with one of the lines of the magnesium triplet about λ 373, and to obtain as complete a photographic record as possible of, the spectrum between this triplet and λ 500. With this view, Mawson’s instantaneous plates were used, these having been found to be fairly sensitive to the green. The exposures have been carried up to four hours, and five photographs have already been taken, some of them with shorter exposures than that named, in consequence of the sky becoming clouded or irregularities in the driving clock, which is not yet completely finished.' Annotations in pencil and ink. Note on front reads 'Copy 14/2/90'. Subject: Astronomy / Spectroscopy Received and read 13 February 1890. A version of this paper was published in volume 48 of the Proceedings of the Royal Society as 'Preliminary note on photographs of the spectrum of the nebula in Orion'.
Extent	5p
Format	Manuscript
PhysicalDescription	Ink and graphite pencil on paper
Digital images	View item on Science in the Making
AccessStatus	Open
RelatedMaterial	DOI: 10.1098/rspl.1890.0026
RelatedRecord	PP/16/16
RelatedRecord	PP/16/17

Fellows associated with this archive

Code	PersonName	Dates
NA6349	Lockyer; Sir; Joseph Norman (1836 - 1920)	1836 - 1920

Add to My Items

Papers of Elsie Widdowson and Robert McCance

Papers of Elsie Widdowson and Robert McCance

Tweets by theRCN

Papers of Robert Boyle

Papers of Robert Boyle

Campi Phlegraei

Campi Phlegraei

Botanical paintings by Jacob van Huysum and William Sartorius

Botanical paintings by Jacob van Huysum and William Sartorius

Photographs of British algae: cyanotype impressions

Photographs of British algae: cyanotype impressions

Browse Collections