Through the Telescope

by James Baikie

• Hale, calcium photographs of sun, [60]
• Hall, Asaph, discovers satellites of Mars, [8], [143];
  • rotation of Saturn, [173], [174]
• Hall, Chester Moor, discovers principle of achromatic, [5]
• Halley's comet, [207], [213]
• Harding discovers Juno, [149]
• Hebe, discovery of, [150]
• Hegel proves that there are only seven planets, [149]
• Helium in chromosphere, [73]
• Helmholtz, speed of sensation, [48];
  • solar contraction, [79]
• Hencke discovers Astræa and Hebe, [150]
• Henry, 30-inch Nice telescope, [8]
• Heraclides promontory, [117]
• Hercules, [237]
• Herculis α, double star, [242]
• Herodotus, valley of, [118], [119], [126]
• Herschel, Sir John, drawing of Orion nebula, [262]
• Herschel, Sir William, 4-foot telescope, [13];
  • impairs sight, [47];
  • misses satellites of Mars, [143], [144];
  • rotation of Saturn, [173];
  • discovers Saturn's sixth and seventh satellites, [186], [187];
  • early history, [190], [191];
  • discovers Uranus, [191];
  • discovers two satellites of Uranus, [196];
  • binary stars, [244];
  • gaseous constitution of nebulæ, [260];
  • distribution of nebulæ, [267];
  • translation of solar system, [269]
• Herschelian. See [Telescope], forms of
• Hevelius, description of Saturn, [176]
• Hind discovers Nova Ophiuchi, [252]
• Hirst, colouring of Jupiter, [159]
• Hirst, Miss, colouring of Jupiter, [159]
• Holden on solar rotation, [59], [60]
• Holmes, Edwin, telescope-house, [38];
  • comet, [211]
• Holmes, Oliver Wendell, 'Poet at the Breakfast-table,' [13]
• Holwarda observes ο Ceti, [248]
• Hooke, observation of Gamma Arietis, [240]
• Howlett, criticism of Wilsonian theory of sun-spots, [61]
• Huggins, atmosphere of Mars, [140];
  • gaseous nature of nebulæ, [210];
  • spectrum of Winnecke's comet, [211];
  • discovers nebula in Draco to be gaseous, [260];
  • spectrum of Andromeda nebula, [264]
• Humboldtianum, Mare, [111]
• Humboldt observes meteor-shower of 1799, [224]
• Hussey, search for Neptune, [197]
• Hussey, W. J., period of δ Equulei, [245]
• Huygens, improvement on telescopes, [3];
  • aerial telescopes, [4];
  • discovers nature of Saturn's ring and first satellite of Saturn, [177], [186];
  • observation of θ Orionis, [240];
  • of great nebula in Orion, [261]
• Huygens, Mount, [116]
• Hydrogen in chromosphere, [73]
• Hyginus cleft, [119]

I

• Imbrium, Mare, [116]
• Iron in chromosphere, [73]

J

• Jansen, Zachariah, claim to invention of telescope, [1]
• Janssen, photographs of sun, [57]
• Journal of British Astronomical Association, [23], [38]
• Juno, discovery of, [149];
  • diameter of, [152]
• Jupiter, brilliancy compared with Venus, [90];
  • period of, [155];
  • distance of, [155];
  • diameter of, [155];
  • compression, volume, density, [155];
  • brilliancy, [156];
  • apparent diameter of, [156];
  • belts of, [157] et seq.;
  • colouring, [158], [159];
  • changes on surface of, [159], [160];
  • great red spot, [160-164];
  • rotation period, [163-165];
  • resemblance to sun, [164-166];
  • satellites of, [166-169];
  • observation of, [169-171];
  • visibility of satellites, [166];
  • diameters of, [167];
  • occultations of, eclipses of, transits of, [167]

K

• Kaiser sea, Mars, [145]
• Keeler, report on Yerkes telescope, [9];
  • rotation of Saturn, [174];
  • constitution of Saturn's rings, [180];
  • photographic survey of nebulæ, [267]
• Kelvin, solar combustion, [78], [79]
• Kepler, suggestion for improved refractor, [3];
  • predicts transit of Mercury, [87];
  • lunar crater, ray-system of, [120], [121];
  • observes new star, [252]
• Kirchhoff, production of Fraunhofer lines, [75]
• Kirkwood, theory of asteroid formation, [153];
  • periodic meteors, [214]
• Kitchiner, visibility of Saturn's satellites, [188]
• Klein's Star Atlas, [255]

L

• Lampland, photographs of Mars, [137]
• Langley, heat of umbra of sun-spot, [50];
  • changes in sunspots, [55]
• Lassell, 4-foot reflector, [37];
  • discovers Saturn's eighth satellite, [187];
  • discovers satellite of Uranus, [196];
  • search for Neptune, [200];
  • discovers satellite of Neptune, [201];
  • drawing of Orion nebula, [262]
• Leibnitz, mountains, [117]
• Lemonnier, observations of Uranus, [193]
• Leonid, meteors, [214], [224], [225], [226]
• Leonis γ, colour of, [236]
• Leverrier, search for Neptune, [199-201]
• Lewis, revision of Struve's 'Mensuræ Micrometricæ,' [278]
• Lick, 36-inch telescope, [8]
• Light, speed of, [231]
• Light-year, [230]
• Lippershey, claim to invention of telescope, [1]
• Lohrmann, lunar chart of, [122]
• Lowell, rotation of Mercury, [85];
  • surface of Mercury, [86];
  • surface of Venus, [95];
  • rotation of Venus, [96];
  • 'oases' of Mars, [137], [138];
  • projections on Mars, [141]
• Lunar observation, [123-125]
• Lyræ ε, double double, [241], [242];
  • β, variable star, [249];
  • spectroscopic binary, [250]
• Lyra, ring nebula in, [265];
  • photographs of, [266]
• Lyrid, meteors, [214], [224], [226]

M