Cambridge University Press 978-0-521-15397-3 - Turn Left at Orion: Hundreds of Night Sky Objects to See in a Home Telescope – And How to Find Them: Fourth Edition Guy Consolmagno and Dan M. Davis Index More information 252 Index Altai, Rupes, 29 Bonpland (crater), 35 Delta Geminorum, Wasat, 75 altitude, 19 books, 242, 244 Delta Herculis, 121 Index Andromeda Galaxy, 176 Brocchi’s Cluster, 138 Delta Orionis, Mintaka, 58 Antares, 26, 45, 151 Burg (crater), 30 Deneb, 133 1 Arietis, 181 Apennines, 32 Burnham, Sherburne, 9 dew, 13, 15, 22, 65, 2 Canum Venaticorum, 113 aperture, 6, 13, 18, 20, 21, 23 Burnham 1, 188 91, 118, 162 2 Puppis, 85 aphelion, 42 BZ Crucis, 237 dew cap, 15 6 (Iota) Trianguli, 180 Apollo 11, 30, 31 diffraction spike, 23, 59; 14 Aurigae, 70 Apollo 12, 35 Callisto, 42, 47 see also spider 15 Aquilae, 141 Apollo 14, 35 Cameron (crater), 28 diffuse nebula, 55 15 Geminorum, 73 Apollo 15, 34, 39 Caroline Herschel (crater), 35 Dione, 49 16 Cygni, 134 Apollo 17, 29, 30, 31, 37 Carpathian Mts., 35 Dobson, John, 18 24 Cancri, 93 Apollo program, 27, 30, 35 cassegrain, 18 Dobsonian, 6, 12, 18–23 24 Ophiuchi, 150 apparent field, 20, 21 Cassini division, 20, 48 dorsa, 37 26 Aurigae, 70 Apennine Mts., 32 Cassiopeia double stars, 188 Double Cluster, 186 32 Orionis, 58 Arago (crater), 31 Cassiopeia open double star, 9, 12, 20 36 Ophiuchi, 150 arc second, 12, 20 clusters, 190 Double-double, 4, 128, 151 39 Eridani, 61 Archimedes (crater), 33, 34 Castor, 74 Double-double’s double, 128 42 Orionis, 58 Argaeus, Mons, 29, 30 catadioptric, 5, 6, 13, DU Crucis, 237 47 Tucanae, 212 Ariadaeus, Rima, 31, 32 15, 18, 22 Dumbbell Nebula, 99, 136 51 Pegasi, 165 Aristarchus (crater), catalogs, 8, 9, 243 Dunlop-159, 232 52 Orionis, 58 26, 29, 36–39 Catharina (crater), 29–31 53 Cnc, 97 Aristillus (crater), 32 Cauchy (crater), 29 Earthshine, 26, 28, 29 54 Leonis, 101 Aristoteles (crater), Centaurus-A, 239 eclipses, 25, 40–41, 43 56 Andromedae, 180 30, 32, 33 Cepheid, 145, 177, eclipsing binaries (variables), 59 Andromedae, 180 Armstrong (crater), 31 188, 197, 227 53, 71, 183, 188 61 Cygni, 128 Arzachel (crater), 33 Chi Persei, 187 ecliptic, 26, 42, 48 Ascella, 160 Clavius (crater), 34, 35 ejecta blanket, 27 AAVSO, 242 Asperitatis, Sinus, 31 cleaning lenses, 17 Epsilon Boötis, Izar, 116 Acrux, 232 Atlas (crater), 29, 30, 65 clock drive, 19 Epsilon Canis Majoris, Albireo, 4, 129, 132 AU (astronomical unit), 57 Clown Face, 74 Adhara, 87 Alcor, 206 Autolycus (crater), 32 clusters, 8, 71, 115 Epsilon Hydrae, 95 Algieba, 96 averted vision, 101, Coal Sack, 237 Epsilon Lyrae, Double- Algol, 182 123, 135 Coat Hanger, 138 double, 128 aligning Dobsonian azimuth, 18, 19, 205 Cobra’s Head (crater), 37 Epsilon Monocerotis, 77 mirrors, 16–17, 22 Cognitum, Mare, 35 Epsilon Sagittae, 139 Alkalurops, 116 Barlow, 6, 12, 22 collimation, 16–17, 22 Epsilon Volantis, 217 Almach, 180 balance telescope, 23 Collinder 399, Coat equatorial mount, 19, 203 Alnitak, 58 basin, 24, 36, 37, 31, 38, 39 Hanger, 139 Eratosthenes (crater), 34 Alpha Canis Majoris, Beehive, 9, 92, 96, 224 coma, 21–23, 93 Eta Carinae, 228 Sirius, 81 belts, 46 Comet’s Tail, 37 Eta Cassiopeiae, 188 Alpha Canis Minoris, Bessel (crater), 32 computers, 5, 49, 242, 244 Eta Geminorum Propus, 73 Procyon, 81 best seen, 9–11 constellations, 7–9 Eta Lupi, 150 Alpha Centauri, Rigel Beta Cygni, Albireo, 132 Copernicus (crater), Eta Orionis, 58 Kentaurus, 232 Beta Lyrae, Sheliak, 131 26, 34–39 Eta Persei, 186 Alpha Circini, 232 Beta Monocerotis, 78 Cordillera, 39 Euclides (crater), 35 Alpha Crucis, Acrux, 232 Beta Muscae, 232 Crab Nebula, 10, 66 Eudoxus (crater), 30, 32, 33 Alpha Canum Venaticorum, Beta Orionis, Rigel, 58 craters, 24, 27 Europa, 47 Cor Caroli, 112 Beta Persei, Algol, 183 crescent Moon, 224, 26, 28 eyepiece, 10, 12, 20–22 Alpha Geminorum, Beta Scorpii, Graffias, 150 Crisium, Mare, 28, eyepiece power, 21 Castor, 74 Beta Tucanae, 215 30, 37, 38 eyepiece solar filters, Alpha Herculis, Ras Big Bang, 103, 109, Cygni, 120, 61 22, 23, 43 Algethi, 124 123, 197 Cyrillus (crater), 29, 31 exit pupil, 21 Alpha Scorpii, Antares, 150 binoculars, 6, 9, 13, 26, 40 Alpha Ursae Minoris, Birt (crater), 39 Danjon, André, 40 f ratio, 21, 22, 23 Polaris, 202 Black Eye Galaxy, 110 dark side of Moon, 26 False Cross, 208, 209, Alphonsus (crater), 33, 35 Blinking Planetary, 134 Dawes (crater), 30 222, 224, 228 Alpine Valley, 33 BM Orionis, 55 de Fontanay, Jean, 232 Fecunditatis, 28–30, 37, 38 alt-azimuth mount, 18, 19 BM Scorpii, 157 Delta Cephei, 196 festoons, 46 © in this web service Cambridge University Press www.cambridge.org Cambridge University Press 978-0-521-15397-3 - Turn Left at Orion: Hundreds of Night Sky Objects to See in a Home Telescope – And How to Find Them: Fourth Edition Guy Consolmagno and Dan M. Davis Index More information Index 253 field of view, 6, 10–13, Heraclides, Prom., 35 KV Aquarii, 173 Galaxy, 178 19–23 Hercules (crater), 29, 30 La Superba, 112 M34, 182 filters, 11, 22, 23, 43, 242 Herodotus (crater), 36, 37 Lagoon Nebula, 146 M35, 72 finderscope, 11, 13–15, Herschel 3945, Winter Lambda Arietis, 180 M36, 68 22, 40, 43 Albireo, 86 Lambda Geminorum, 75 M37, 68 finderscope view, 11 Herschel, Caroline, 167 Lambda Orionis, Meissa, 58 M38, 68 first quarter, 32–33 crater, 35 Lamont (crater), 31 M39, 133 Flamsteed number, 9 Herschel, John, 9, 237 Lansberg (crater), 35 M41, 82 focal length, 12, 18, 20, 21 Herschel, William, 9, Langrenus (crater), 29 M42, Orion Nebula, 52 focal point, 20, 21 54, 99, 167, 197 Large Magellanic M43, companion fogged-up lenses, 15, 65 highlands, 24, 27 Cloud, 216–221 of M42, 52 Fra Mauro (crater), 35 Hipparchos, 9, 83, 139 latitude, 7, 11, 19, 39, 90, M44, Beehive, 92 Frigoris, Mare, 30, 32–34 HJ 1123, 183 118, 121, 143, 149, M45, Pleiades, 64 full Moon, 38 HJ 2155, 183 158, 171, 205, 208 M46, 84 HN 40, 149 le Monnier (crater), 29 M47 (NGC 2422), 84 galaxy, 8, 109 HN 84, 138 lens caps, 17, 22 M49, 106 group, 109, 201; cluster, Homunculus, 229 lenses, cleaning, 17 M50, 80 supercluster, 101, 109 Horse and Rider, 207 libration, 26, 28, 32, M51, Whirlpool, 204 Galileo, 18, 43, 47, 54 Hubble, Edward, 34, 37, 39 M52, 191 Gamma Andromedae, 177, 197, 205 light year, 57 M53, 110 Almach, 180 Hubble constant, 123 limb, 24 M54, 160 Gamma Arietis, Hubble Telescope, Local Group, 109, M55, 160 Mesarthim, 180 7, 143, 229 175, 177, 179, M56, 132 Gamma Crucis, Gacrux, 232 Huggins, William, 199 Longomontanus, 35 M57, Ring, 130 Gamma Delphini, 128 Humorum, Mare, 26, 37, 38 LY Aurigae, 71 M58, 107 Gamma Leonis, Algieba, 96 Hyginus (crater and M59, 107 Gamma Velorum, 222 rille), 27, 32 M1, Crab Nebula, 66 M60, 107 Gamma Virginis, M2, 166 M62, 154 Porrima, 104 I 2391, 223 M3, 114 M63, 113 Gamma Volantis, 217 Iapetus, 49 M4, 152 M64, Black Eye, 110 Ganymede, 47 IC 2602, Southern M5, 124 M65, 100 Gassendi (crater), 37 Pleiades, 228 M6, 156 M66, 100 Gem, 228 Imbrium, Mare, 26, 34–39 M7, 156 M67, 94 Ghost of Jupiter, 98 Internet, 5, 242 M8, Lagoon, 146 M71, 138 giant impact, 27 Io, 47 M10, 126 M72, 168 gibbous Moon, 34–37 Iota Boötis, 206 M11, Wild Ducks, 140 M79, 62 globular cluster, 8, 115 Iota Cancri, 96 M12, 126 M80, 152 Graffias, 152 Iota Cassiopeiae, 188 M13, Great Globular, 120 M81, 200 Great Globular Cluster, 120 Iota Orionis, 54 M15, 164 M82, 200 Great Red Spot, 46 Iota (6) Trianguli, 180 M16, 142 M84, 107 greatest elongation, 42 Iridum, Sinus, 35 M17, Swan, 142 M86, 107 Grimaldi (crater), 26, 38, 39 Izar, 116 M18, 142 M87, 107 guideposts, 7 M19, 154 M88, 107 J Velorum, 229 M20, Trifid, 148 M89, 107 h Persei, 187 Jansen (crater), 31 M21, 148 M90, 107 h 3752, 62 Jewel Box, 236 M22, 158 M91, 107 h 4128, 225 Jupiter, 46 M23, 144 M92, 122 h 4432, 229 Jurn Mts., 35 M24, 145 M93, 88 Hadley Rille, 34, 39 M25, 144 M94, 112 Haemus, Montes, 32 k Puppis, 89 M26, 141 M95, 102 half Moon, 32–33 Kappa Boötis, 206 M27, Dumbbell, 136 M96, 102 Halley, Edmund, 239 Kappa Geminorum, 75 M28, 158 M98, 108 Hamburger Galaxy, 239 Kappa Leonis, 96 M29, 133 M99, 108 Harbinger Mons, 36 Kappa Tucanae, 215 M30, 170 M101, Pinwheel, 206 harvest Moon, 39, 163 Kayuga (spacecraft), 37 M31, Andromeda M103, 194 HD 160202, 157 Kepler (crater), 26, 36–39 Galaxy, 176 M105, 102 HdO 290, 240 Keyhole Nebula, 228 M32, companion of M110 (NGC 205), Heis (crater), 35 Kuiper (crater), 35 M31, 176 with M31, 176 Helix Nebula, 172 Kuiper Belt, 117 M33, Triangulum magazines, 43–49, 242–245 © in this web service Cambridge University Press www.cambridge.org Cambridge University Press 978-0-521-15397-3 - Turn Left at Orion: Hundreds of Night Sky Objects to See in a Home Telescope – And How to Find Them: Fourth Edition Guy Consolmagno and Dan M. Davis Index More information 254 Index Magellanic Clouds, 210–221 NGC 225, 192 NGC 1966, 216 NGC 3608, 101 Maginus (crater), 35 NGC 231, 210 NGC 1967, 216 NGC 3628, 100 magnification, 10, 12, NGC 247, 174 NGC 1968, 216 NGC 3632, 101 18, 20–21; NGC 249, 210 NGC 1974, 216 NGC 3766, Pearl, 228 maximum useful, 20–21 NGC 253, 174 NGC 1980, 53 NGC 4216, 108 minimum useful, 21 NGC 261, 210 NGC 1981, 53 NGC 4372, 234 magnitude, 7 NGC 265, 210 NGC 1983, 216 NGC 4435, 107 Maksutov, 18 NGC 281, Pacman, 189 NGC 1984, 216 NGC 4438, 107 Manilius (crater), 32 NGC 288, 174 NGC 1986, 216 NGC 4461, 107 Manners (crater), 31 NGC 330, 210 NGC 1994, 216 NGC 4469, 106 mare, 24, 27 NGC 346, 210 NGC 2001, 216 NGC 4473, 107 Marginus, Mare, 28 NGC 362, 214 NGC 2009, 216 NGC 4477, 107 Marius (crater), 36, 37 NGC 371, 210 NGC 2014, 216 NGC 4526, 106 Mars, 44–45 NGC 376, 210 NGC 2015, 216 NGC 4535, 106 Maskelyne (crater), 31 NGC 395,