photoheliograph
(fəʊtəʊˈhiːlɪəʊgrɑːf, -æ-)
[f. photo- + Gr. ἥλιο-ς sun + -graph: cf. heliograph.]
A photographic telescope adapted for taking photographs of the sun: = heliograph 2.
| 1861 W. Fairbairn Address Brit. Assoc., The careful registering of the appearances of the sun by the photo⁓heliograph of Sir John Herschel. 1884 Brit. Almanac, Comp. 20 The great photoheliograph with which Mr. De la Rue took sun-pictures during the eclipse in Spain in 1860. 1899 Westm. Gaz. 24 Aug. 8/2 This novel instrument will be practically a horizontal photo-heliograph, giving images of the moon exceeding a foot in diameter. |
So ˌphotohelioˈgraphic a., pertaining to a photoheliograph or to ˌphotoheliˈography, the art or process of taking photographs of the sun; photoˈhelioscope [see -scope] = photoheliograph.
| 1865 Reader No. 141. 292/1 Perfection attained in photo⁓heliography. 1871 Herschel Outl. Astron. (ed. 11) 261 Photographic representations of the spots have been made..with a ‘photohelioscope’ at Kew. 1890 Cent. Dict., Photo⁓heliographic. 1905 Athenæum 29 Apr. 535/1 The volume of ‘Greenwich Observations’ for the year 1902..together with..‘Magnetical and Meteorological Observations’, and ‘Photoheliographic Results’. |