O the transit instrument of the Royal Observatory of San Fernando
O the transit instrument, when used for finding time and latitude, by observations on the prime vertical
O the transit of Mercury in 1832; and on Encke's comet
O the transit of Mercury in 1832; and on Encke's comet
O the transit of Mercury, November 1822, and occultations of stars
O the triple star ξ Cancri, &c.
O the Variable Magnitude of Gamma Cassiopeiae
O the Visibility of Lunar Appulses
O two invariable pendulums
O VI + Ly beta + C II from Starburst and Poststarburst Galaxies. I. Stellar Library and Evolutionary Synthesis Profiles
O VI Emission from NGC7009, the Saturn Nebula.
O VI Emission from Superbubble in the Large Magellanic Cloud
O VI Emission from Superbubbles in the Large Magellanic Cloud
O VI Emission From The Supernova Remnant N49 In The Large Magellanic Cloud
O VI Emission in the Starburst Merger System NGC3256
O VI Emission Line Detection Limit of Far-Ultraviolet Imaging Spectrograph
O VI Imaging Instrumentation and Spectroscopic Observations in Supernova Remnants
O VI Recombination Lines in Ultraviolet and Visible Spectra of RR Telescopii
O VI towards the Large Magellanic Cloud.
O VII/O VIII Emission of Warm/Hot Gas