Through the Telescope

by James Baikie

• M. [35], cluster, [257];
  • M. [13], number of stars in, [258];
  • M. [92], [259];
  • M. [3] and M. [5], variables in, [259];
  • M. [51], [265]
• MacEwen, drawing of Venus, [94], [95]
• Mädler, heights of lunar mountains, [118];
  • lunar chart, [122], [124], [128]
• Maginus, [120]
• Magnesium in chromosphere, [73]
• Maia, [256]
• Maintenance of solar light and heat, [78], [79]
• Marius, Simon, description of Andromeda nebula, [264]
• Markwick, Colonel, [117]
• Mars, distance, diameter, rotation, year of, phase of, [130-132];
  • oppositions of, [130], [131];
  • polar caps, [132];
  • canals, [135-137];
  • dark areas, [133];
  • 'oases,' [137], [138];
  • atmosphere of, [139], [140];
  • projections on terminator, [141];
  • satellites of, [142-144];
  • visibility of details of, [144]
• Maunder, Mrs., photographs of coronal streamers, [70]
• Maunder, E. W., adjustment of equatorial, [22], [23];
  • electrical influence of sun on earth, [63];
  • 'Astronomy without a Telescope,' [238]
• Mee, Arthur, on amateur observation, [17];
  • visibility of Cassini's division, [183]
• Melbourne 4-foot reflector, [12]
• Mellor, lunar chart, [124]
• Mendenhall, illustration of sun's distance, [48]
• Mercury, elongations of, [81];
  • diameter of, [82];
  • orbit, [83];
  • bulk, weight, density, reflective power, [83];
  • phases, [84];
  • surface, [84];
  • rotation period, [85];
  • transits, [87], [88];
  • anomalous appearances in, [87]
• Merope, [256]
• Merz, Cambridge (U.S.A.), and Pulkowa refractors, [6]
• Messier, lunar crater, [126];
  • 'the comet ferret,' [219];
  • catalogue of nebulæ, [258]
• Meteors, [222] et seq.;
  • shower of 1833, [223];
  • of 1866, [224];
  • Perseid, [214], [224], [225];
  • Leonid, [214], [224], [225];
  • Lyrid, [214], [224], [226];
  • Andromedes, [214], [215], [224], [225];
  • radiant point, [223], [224];
  • sporadic, [226];
  • observation of, [227-229]
• Metius's claim to invention of telescope, [1]
• Milky Way, [239];
  • clustering of stars towards, [240];
  • nebulæ in, [240]
• Mira, ο Ceti, [248];
  • period of, [249]
• Mizar, [240], [241]
• Montaigne, [219]
• Month, lunar and sidereal, [103]
• Moon, size, orbit, area, volume, density, mass, force of gravity, [100];
  • lunar tides, [101], [102];
  • phases, [102];
  • synodic period, [103];
  • reflective power, [104];
  • 'old moon in young moon's arms,' [104];
  • earth's light on, [105];
  • lunar eclipses, [105], [106];
  • 'black eclipses,' [105];
  • Maria of, [109-111];
  • craters of, [109], [112-114];
  • mountain ranges, [109], [116-118];
  • clefts or rills, [109], [118], [119];
  • ray systems, [109], [120], [121];
  • atmosphere of, [126];
  • evidence of change, [127], [128]
• Mountings. See [Telescope]

N

• Nasmyth, willow-leaf structure of solar surface, [57];
  • lunar clefts, [119];
  • on lunar ray systems, [121];
  • and Carpenter, lunar chart, [125];
  • on powers for lunar observation, [127]
• Nebula of Orion, [261-263];
  • drawings of, [262];
  • photographs, [262];
  • distance of, [263];
  • of Andromeda, [263], [264];
  • photographs of, [264];
  • spectrum, [264]
• Nebulæ, few in neighbourhood of Galaxy, [240];
  • Messier's catalogue of, [258];
  • gaseous, [260] et seq.;
  • spiral, [263-265];
  • ring, [265];
  • planetary, [266];
  • number of, [267]
• Neison on lunar walled plains, [115], [120];
  • lunar chart, [125]
• Neptune, [148], [196] et seq.;
  • diameter, distance, period, spectrum, satellite of, [201]
• Newall, 25-inch refractor, [8]
• Newcomb on scale of solar operations, [77], [78];
  • on markings of Venus, [93];
  • phosphorescence of dark side of Venus, [97];
  • ratio of stellar increase, [235];
  • 'Astronomy for Everybody,' [238];
  • stars in galaxy, [240];
  • spectroscopic binaries, [248];
  • on Nova Persei, [254];
  • on constitution of stars, [268];
  • apex of solar path, [271]
• Newton, Sir Isaac, invents Newtonian reflector, [10]
• Nice, 30-inch refractor, [8]
• Nichol on M. [13], [258]
• Nilosyrtis, [145]
• Noble, method of observing sun, [67];
  • visibility of Saturn's satellites, [188]
• Nova Cassiopeiæ, [252];
  • Coronæ, [252];
  • Cygni, [253];
  • Andromedæ, [253];
  • Ophiuchi, [252];
  • Aurigæ, [253];
  • spectrum of, [253];
  • changes into planetary nebula, [254];
  • Persei, [254];
  • photographs of, [254];
  • nebulosity round, [254];
  • Geminorum, [255];
  • colour, spectrum of, [255]

O

• Object-glass, treatment of, [19], [20];
  • testing of, [20-23]
• Observation, methods of solar, [65-67]
• Olbers discovers Pallas and Vesta, [149];
  • theory of asteroid formation, [150], [152]
• Oppolzer, E. von, discovers variability of Eros, [152]
• Opposition, [130] (note);
  • of Mars, [130], [131]
• Orion, [237];
  • great nebula of, [261-263]
• Orionis θ, observation of, [240];
  • ι, naked-eye double, [241];
  • θ, multiple star, [243];
  • σ, multiple star, [243]

P

• Palisa discovers asteroids, [151]
• Pallas, discovery of, [149];
  • diameter of, [152]
• Peck, 'Constellations and How to Find Them,' [238];
  • star-charts, [278]
• Pegasi κ, short-period binary, [245]
• Pegasus, [237]
• Perihelion of planets, [131] (note)
• Period, synodic, of moon, [103]
• Perrine discovers Jupiter's sixth and seventh satellites, [167]
• Perseid, meteors, [214], [224], [225]
• Perseus, sword-handle of, [257]
• Petavius cleft, [119]
• Peters discovers asteroids, [151]
• Phillips, Rev. T. E. R., polar cap of Mars, [134];
  • canals of Mars, [137];
  • clouds on Mars, [140]
• Phobos satellite of Mars, [143]
• Phosphorescence of dark side of Venus, [97]
• Photosphere, [75]
• Piazzi discovers Ceres, [149]
• Pickering, E. C., number of lucid stars in northern hemisphere, [233];
  • parallax of Orion nebula, [262]
• Pickering, W. H., on lunar ray systems, [120], [121];
  • changes on moon, [126];
  • on polar cap of Mars, [134], [135];
  • discovers Saturn's ninth and tenth satellites, [187];
  • photographs Orion nebula, [262]
• Planetary nebulæ, [266];
  • spectra of, [266];
  • nebula in Draco, [266]
• Plato, [117], [126]
• Pleiades, number of stars in, [233], [256], [257];
  • nebula of, [257]
• Pleione, [256]
• Polarizing eye-piece, [66]
• Pollux, [234]
• Præsepe, [256]
• Procellarum Oceanus, [111]
• Proctor, [2];
  • method of finding Mercury, [82];
  • on state of Jupiter, [166]
• Proctor on the Saturnian system, [181];
  • visibility of Cassini's division, [182];
  • on Challis's search for Neptune, [199];
  • Star Atlas, [278]
• Procyon, [234]
• Projecting sun's image, [67]
• Projections on terminator of Mars, [141]
• Prominences, [73], [74]
• Ptolemäus, [112]
• Pulkowa, 30-inch refractor, [8], [9]

R

• Radiant point of meteors, [223], [224];
  • number of, [225];
  • stationary, [229]
• Ranyard Cowper on parallax measures, [231]
• Regulus, [234]
• Reversing layer seen by Young, [74];
  • spectrum photographed by Shackleton, [75];
  • depth of, [75]
• Riccioli observes duplicity of ζ Ursæ Majoris, [240]
• Rigel, [232], [234];
  • colour of, [235]
• Ritchey, 5-foot reflector Yerkes Observatory, [12]
• Roche's limit, [186]
• Rosse, Earl of, 6-foot reflector, [12];
  • colouring of Jupiter, [158], [159];
  • telescope, resolution of Orion nebula, [260];
  • drawing of Orion nebula with, [262];
  • spiral character of M. [51], [265]
• Rotation period of Mercury, [85];
  • of Venus, [95], [96]