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IND-IIA-F025-I04 · Item · 1861-04-18
Part of Compilation of Pogson's observations and drawing

This item was about the discovery of 5 Asteroids (or minor planets as they were known at that time) Asia, Sappho, Sylvia, Camilla and Vera at Madras. The first was named asteroid 'Asia' as it was the first to be discovered by an observer on this continent. This page from Pogson's log book shows the first observations of Asia made on April 18th and 19th 1861.

Pogson, Norman Robert
IND-IIA-F025-I02 · Item · 1868-08-18
Part of Compilation of Pogson's observations and drawing

This item was about total solar eclipse of 18th August 1868. At Masulipatnam Pogson detected the hydrogen line emission, with a spectroscope. He saw a bright yellow line near the position of D lines of Sodium. The line originated from hitherto unknown element later termed as helium after the source of earliest detection. Hand coloured sketch of the solar spectrum during the Total Solar Eclipse of 1868. Hand coloured picture of the sun before and after the total solar eclipse 1868.

Pogson, Norman Robert

The item comprises observations made as Madras Equatorial Observations of the minor planet Ariadne. N.R. Pogson took these observations from Madras in 1861, 1863, 1864, and 1866. N.R. Pogson discovered this minor planet on 15 April 1857. Harmonia (minor planet designation: 40 Harmonia) is a giant main-belt asteroid.

Pogson, Norman Robert