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THE HANDBOOK OF THE BRITISH ASTRONOMICAL ASSOCIATION 2009 2008 October ISSN 0068-130-X CONTENTS CALENDAR 2009 . 2 PREFACE. 3 EDITOR’S NOTES REGARDING THE HANDBOOK SURVEY . 4 HIGHLIGHTS FOR 2009. 5-6 SKY DIARY FOR 2009 . 7 VISIBILITY OF PLANETS. 8 RISING AND SETTING OF THE PLANETS IN LATITUDES 52°N AND 35°S. 9-10 ECLIPSES . 11-14 TIME. 15-16 EARTH AND SUN. 17-19 MOON . 20 SUN’S SELENOGRAPHIC COLONGITUDE. 21 MOONRISE AND MOONSET . 22-25 & 140 LUNAR OCCULTATIONS . 26-34 GRAZING LUNAR OCCULTATIONS. 35-36 PLANETS – EXPLANATION OF TABLES. 37 APPEARANCE OF PLANETS. 38 MERCURY. 39-40 VENUS. 41 MARS. 42-43 ASTEROIDS AND DWARF PLANETS. 44-63 JUPITER . 64-67 SATELLITES OF JUPITER . 68-88 SATURN. 89-92 SATELLITES OF SATURN . 93-100 URANUS. 101 NEPTUNE. 102 COMETS. 103-114 METEOR DIARY . 115-117 VARIABLE STARS . 118-123 Algol; λ Tauri; RZ Cassiopeiae; Mira Stars; IP Pegasi EPHEMERIDES OF DOUBLE STARS . 124-125 BRIGHT STARS . 126 GALAXIES . 127-128 SUN, MOON AND PLANETS: Physical data. 129 SATELLITES (NATURAL): Physical and orbital data . 130-131 ELEMENTS OF PLANETARY ORBITS . 132 INTERNET RESOURCES. 133-134 CONVERSION FORMULAE AND ERRATA . 134 RADIO TIME SIGNALS. 135 PROGRAM AND DATA LIBRARY . 136 ASTRONOMICAL AND PHYSICAL CONSTANTS . 137-138 MISCELLANEOUS DATA AND TELESCOPE DATA . 139 GREEK ALPHABET . .. 139 Front Cover: The Crab Nebula, M1 (NGC 1952) in Taurus. Imaged in January 2008 by Andrea Tasseli from Lincoln, UK. Intes-Micro M809 8 inch (203mm) f/10 Maksutov-Cassegrain with Starlight Xpress SXV-H9 CCD and Astronomik filter set. Image = L (56x120s) and RHaGB (45x60s). v52 British Astronomical Association HANDBOOK FOR 2009 EIGHTY-EIGHTH YEAR OF PUBLICATION BURLINGTON HOUSE, PICCADILLY, LONDON, W1J 0DU Telephone 020 7734 4145 2 CALENDAR 2009 January February March April May June July August September October November December Day Day Day Day Day Day Day Day Day Day Day Day Day Day Day Day Day Day Day Day Day Day Day Day Day of of of of of of of of of of of of of of of of of of of of of of of of of Month Week Year Week Year Week Year Week Year Week Year Week Year Week Year Week Year Week Year Week Year Week Year Week Year 1 Thu. 1 Sun. 32 Sun. 60 Wed. 91 Fri. 121 Mon. 152 Wed. 182 Sat. 213 Tue. 244 Thu. 274 Sun. 305 Tue. 335 2 Fri. 2 Mon. 33 Mon. 61 Thu. 92 Sat. 122 Tue. 153 Thu. 183 Sun. 214 Wed. 245 Fri. 275 Mon. 306 Wed. 336 3 Sat. 3 Tue. 34 Tue. 62 Fri. 93 Sun. 123 Wed. 154 Fri. 184 Mon. 215 Thu. 246 Sat. 276 Tue. 307 Thu. 337 4 Sun. 4 Wed. 35 Wed. 63 Sat. 94 Mon. 124 Thu. 155 Sat. 185 Tue. 216 Fri. 247 Sun. 277 Wed. 308 Fri. 338 5 Mon. 5 Thu. 36 Thu. 64 Sun. 95 Tue. 125 Fri. 156 Sun. 186 Wed. 217 Sat. 248 Mon. 278 Thu. 309 Sat. 339 6 Tue. 6 Fri. 37 Fri. 65 Mon. 96 Wed. 126 Sat. 157 Mon. 187 Thu. 218 Sun. 249 Tue. 279 Fri. 310 Sun. 340 7 Wed. 7 Sat. 38 Sat. 66 Tue. 97 Thu. 127 Sun. 158 Tue. 188 Fri. 219 Mon. 250 Wed. 280 Sat. 311 Mon. 341 8 Thu. 8 Sun. 39 Sun. 67 Wed. 98 Fri. 128 Mon. 159 Wed. 189 Sat. 220 Tue. 251 Thu. 281 Sun. 312 Tue. 342 9 Fri. 9 Mon. 40 Mon. 68 Thu. 99 Sat. 129 Tue. 160 Thu. 190 Sun. 221 Wed. 252 Fri. 282 Mon. 313 Wed. 343 10 Sat. 10 Tue. 41 Tue. 69 Fri. 100 Sun. 130 Wed. 161 Fri. 191 Mon. 222 Thu. 253 Sat. 283 Tue. 314 Thu. 344 11 Sun. 11 Wed. 42 Wed. 70 Sat. 101 Mon. 131 Thu. 162 Sat. 192 Tue. 223 Fri. 254 Sun. 284 Wed. 315 Fri. 345 Calendar 12 Mon. 12 Thu. 43 Thu. 71 Sun. 102 Tue. 132 Fri. 163 Sun. 193 Wed. 224 Sat. 255 Mon. 285 Thu. 316 Sat. 346 13 Tue. 13 Fri. 44 Fri. 72 Mon. 103 Wed. 133 Sat. 164 Mon. 194 Thu. 225 Sun. 256 Tue. 286 Fri. 317 Sun. 347 14 Wed. 14 Sat. 45 Sat. 73 Tue. 104 Thu. 134 Sun. 165 Tue. 195 Fri. 226 Mon. 257 Wed. 287 Sat. 318 Mon. 348 15 Thu. 15 Sun. 46 Sun. 74 Wed. 105 Fri. 135 Mon. 166 Wed. 196 Sat. 227 Tue. 258 Thu. 288 Sun. 319 Tue. 349 16 Fri. 16 Mon. 47 Mon. 75 Thu. 106 Sat. 136 Tue. 167 Thu. 197 Sun. 228 Wed. 259 Fri. 289 Mon. 320 Wed. 350 17 Sat. 17 Tue. 48 Tue. 76 Fri. 107 Sun. 137 Wed. 168 Fri. 198 Mon. 229 Thu. 260 Sat. 290 Tue. 321 Thu. 351 18 Sun. 18 Wed. 49 Wed. 77 Sat. 108 Mon. 138 Thu. 169 Sat. 199 Tue. 230 Fri. 261 Sun. 291 Wed. 322 Fri. 352 19 Mon. 19 Thu. 50 Thu. 78 Sun. 109 Tue. 139 Fri. 170 Sun. 200 Wed. 231 Sat. 262 Mon. 292 Thu. 323 Sat. 353 20 Tue. 20 Fri. 51 Fri. 79 Mon. 110 Wed. 140 Sat. 171 Mon. 201 Thu. 232 Sun. 263 Tue. 293 Fri. 324 Sun. 354 21 Wed. 21 Sat. 52 Sat. 80 Tue. 111 Thu. 141 Sun. 172 Tue. 202 Fri. 233 Mon. 264 Wed. 294 Sat. 325 Mon. 355 22 Thu. 22 Sun. 53 Sun. 81 Wed. 112 Fri. 142 Mon. 173 Wed. 203 Sat. 234 Tue. 265 Thu. 295 Sun. 326 Tue. 356 BAA Handbook2009 BAA 23 Fri. 23 Mon. 54 Mon. 82 Thu. 113 Sat. 143 Tue. 174 Thu. 204 Sun. 235 Wed. 266 Fri. 296 Mon. 327 Wed. 357 24 Sat. 24 Tue. 55 Tue. 83 Fri. 114 Sun. 144 Wed. 175 Fri. 205 Mon. 236 Thu. 267 Sat. 297 Tue. 328 Thu. 358 25 Sun. 25 Wed. 56 Wed. 84 Sat. 115 Mon. 145 Thu. 176 Sat. 206 Tue. 237 Fri. 268 Sun. 298 Wed. 329 Fri. 359 26 Mon. 26 Thu. 57 Thu. 85 Sun. 116 Tue. 146 Fri. 177 Sun. 207 Wed. 238 Sat. 269 Mon. 299 Thu. 330 Sat. 360 27 Tue. 27 Fri. 58 Fri. 86 Mon. 117 Wed. 147 Sat. 178 Mon. 208 Thu. 239 Sun. 270 Tue. 300 Fri. 331 Sun. 361 28 Wed. 28 Sat. 59 Sat. 87 Tue. 118 Thu. 148 Sun. 179 Tue. 209 Fri. 240 Mon. 271 Wed. 301 Sat. 332 Mon. 362 29 Thu. 29 Sun. 88 Wed. 119 Fri. 149 Mon. 180 Wed. 210 Sat. 241 Tue. 272 Thu. 302 Sun. 333 Tue. 363 30 Fri. 30 Mon. 89 Thu. 120 Sat. 150 Tue. 181 Thu. 211 Sun. 242 Wed. 273 Fri. 303 Mon. 334 Wed. 364 31 Sat. 31 Tue. 90 Sun. 151 Fri. 212 Mon. 243 Sat. 304 Thu. 365 PREFACE The general arrangement of the Handbook remains similar to that of 2008, but with the addition of a Highlights section and some additional items added as a result of the Handbook survey that was carried out in early 2008. We have continued to use A5 format. The work of the Director has been greatly eased by the help of the Editor, Valerie White, and Assistant Director, Sheridan Williams, who have seen all the material through the press. Andrew Sinclair provided all the tables and diagrams for Saturn’s satellites, the two diagrams for the rising and setting of planets, and the diagram of the appearances of the planets. He also gave assistance with the grazing lunar occultations map. Mitsuo Kawata, International Lunar Occultation Centre, Japan, provided the predictions of lu- nar occultations. Barry Leggett prepared the table of the satellites of Jupiter from data supplied by William Thuillot of the Institut de Mécanique Céleste et de Calcul des Ephémérides, who also supplied the diagrams of Jupiter’s satellites. Roger Dymock, Andrew Elliott and Richard Miles provided the data on minor planets and Jonathan Shanklin contributed the comet data. Solar and lunar eclipse maps and diagrams were provided by Fred Espenak,.
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    Journal für Astronomie www.vds-astro.de ISSN 1615-0880 Nr. 75 4/2020 Zeitschrift der Vereinigung der Sternfreunde e.V. Infrarotastronomie ASTRONOMISCHE VEREINIGUNGEN Die Sternwarte St. Andreasberg KOMETEN Die Entwicklung von C/2020 F3 (NEOWISE) PLANETEN Die Sichtbarkeit von Venus im Frühjahr 2020 Canon EOS 250D & 2000D modifiziert für die Astrofotografie ! Ob mit Kameraobjektiv oder am Teleskop: Modizierte Canon EOS DSLR Kameras bieten Ihnen einen einfachen Einstieg in die Astrofotograe! Die Vorteile im Überblick: • etwa fünffach höhere Empfindlichkeit bei H-alpha und SII • Infrarot Blockung der Kamera bleibt vollständig erhalten • kein Einbau eines teuren Ersatzfilters • mit Astronomik OWB-Clip-Filter uneingeschränkt bei Tag nutzbar • auch ohne Computer am Teleskop einsatzfähig • 14 Bit Datentiefe im RAW-Format, 24 Megapixel • bei der 250Da: Erhalt des EOS Integrated Cleaning System • bei der 250Da: Dreh- und schwenkbarer Bildschirm • kompatibel mit vielen gängigen Astronomieprogrammen • voller Erhalt der Herstellergarantie Weitere Modelle auf Anfrage Wir bauen auch Ihre bereits vorhandene Kamera um! Canon EOS 250Da € 72037 * Canon EOS 2000Da € 54491 * * Tagespreis vom 07. August 2020 mit 200mm 1:4 Reflektor ©Bruno Mattern, Aufnahme Astronomik Deep-Sky RGB Farbfiltersatz Neuentwicklung! + optimierte Bildschärfe + höchster Kontrast + maximale Transmission = optimale Ergebnisse © Michael Sidonio Annals of the Deep Sky - A Survey of Galactic and Extragalactic Objects astro-shop Diese englischsprachige Buchreihe ist als mehrbändiges Werk angelegt, das Das seit zwei Jahrzehnten erfolgreiche Konzept die heutige Sicht auf alle Sternbilder des Himmels und die in Ihnen beobacht- hat inzwischen viele Nachahmer gefunden. baren Objekte darstellt. Deshalb achten Sie unbedingt darauf, dass Sie Die Gliederung erfolgt alphabetisch nach Sternbildern. Vergleichbar sind die auf der richtigen astro-shop Seite landen: Bücher mit "Burnham's Celestial Handbook" oder "Taschenatlas der Sternbilder“, eben aktualisiert auf den Wissens- und Technikstand von heute.