The Bulletin Volume 94, Issue 03
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
407 a Abell Galaxy Cluster S 373 (AGC S 373) , 351–353 Achromat
Index A Barnard 72 , 210–211 Abell Galaxy Cluster S 373 (AGC S 373) , Barnard, E.E. , 5, 389 351–353 Barnard’s loop , 5–8 Achromat , 365 Barred-ring spiral galaxy , 235 Adaptive optics (AO) , 377, 378 Barred spiral galaxy , 146, 263, 295, 345, 354 AGC S 373. See Abell Galaxy Cluster Bean Nebulae , 303–305 S 373 (AGC S 373) Bernes 145 , 132, 138, 139 Alnitak , 11 Bernes 157 , 224–226 Alpha Centauri , 129, 151 Beta Centauri , 134, 156 Angular diameter , 364 Beta Chamaeleontis , 269, 275 Antares , 129, 169, 195, 230 Beta Crucis , 137 Anteater Nebula , 184, 222–226 Beta Orionis , 18 Antennae galaxies , 114–115 Bias frames , 393, 398 Antlia , 104, 108, 116 Binning , 391, 392, 398, 404 Apochromat , 365 Black Arrow Cluster , 73, 93, 94 Apus , 240, 248 Blue Straggler Cluster , 169, 170 Aquarius , 339, 342 Bok, B. , 151 Ara , 163, 169, 181, 230 Bok Globules , 98, 216, 269 Arcminutes (arcmins) , 288, 383, 384 Box Nebula , 132, 147, 149 Arcseconds (arcsecs) , 364, 370, 371, 397 Bug Nebula , 184, 190, 192 Arditti, D. , 382 Butterfl y Cluster , 184, 204–205 Arp 245 , 105–106 Bypass (VSNR) , 34, 38, 42–44 AstroArt , 396, 406 Autoguider , 370, 371, 376, 377, 388, 389, 396 Autoguiding , 370, 376–378, 380, 388, 389 C Caldwell Catalogue , 241 Calibration frames , 392–394, 396, B 398–399 B 257 , 198 Camera cool down , 386–387 Barnard 33 , 11–14 Campbell, C.T. , 151 Barnard 47 , 195–197 Canes Venatici , 357 Barnard 51 , 195–197 Canis Major , 4, 17, 21 S. Chadwick and I. Cooper, Imaging the Southern Sky: An Amateur Astronomer’s Guide, 407 Patrick Moore’s Practical -
7.5 X 11.5.Threelines.P65
Cambridge University Press 978-0-521-19267-5 - Observing and Cataloguing Nebulae and Star Clusters: From Herschel to Dreyer’s New General Catalogue Wolfgang Steinicke Index More information Name index The dates of birth and death, if available, for all 545 people (astronomers, telescope makers etc.) listed here are given. The data are mainly taken from the standard work Biographischer Index der Astronomie (Dick, Brüggenthies 2005). Some information has been added by the author (this especially concerns living twentieth-century astronomers). Members of the families of Dreyer, Lord Rosse and other astronomers (as mentioned in the text) are not listed. For obituaries see the references; compare also the compilations presented by Newcomb–Engelmann (Kempf 1911), Mädler (1873), Bode (1813) and Rudolf Wolf (1890). Markings: bold = portrait; underline = short biography. Abbe, Cleveland (1838–1916), 222–23, As-Sufi, Abd-al-Rahman (903–986), 164, 183, 229, 256, 271, 295, 338–42, 466 15–16, 167, 441–42, 446, 449–50, 455, 344, 346, 348, 360, 364, 367, 369, 393, Abell, George Ogden (1927–1983), 47, 475, 516 395, 395, 396–404, 406, 410, 415, 248 Austin, Edward P. (1843–1906), 6, 82, 423–24, 436, 441, 446, 448, 450, 455, Abbott, Francis Preserved (1799–1883), 335, 337, 446, 450 458–59, 461–63, 470, 477, 481, 483, 517–19 Auwers, Georg Friedrich Julius Arthur v. 505–11, 513–14, 517, 520, 526, 533, Abney, William (1843–1920), 360 (1838–1915), 7, 10, 12, 14–15, 26–27, 540–42, 548–61 Adams, John Couch (1819–1892), 122, 47, 50–51, 61, 65, 68–69, 88, 92–93, -
Ngc Catalogue Ngc Catalogue
NGC CATALOGUE NGC CATALOGUE 1 NGC CATALOGUE Object # Common Name Type Constellation Magnitude RA Dec NGC 1 - Galaxy Pegasus 12.9 00:07:16 27:42:32 NGC 2 - Galaxy Pegasus 14.2 00:07:17 27:40:43 NGC 3 - Galaxy Pisces 13.3 00:07:17 08:18:05 NGC 4 - Galaxy Pisces 15.8 00:07:24 08:22:26 NGC 5 - Galaxy Andromeda 13.3 00:07:49 35:21:46 NGC 6 NGC 20 Galaxy Andromeda 13.1 00:09:33 33:18:32 NGC 7 - Galaxy Sculptor 13.9 00:08:21 -29:54:59 NGC 8 - Double Star Pegasus - 00:08:45 23:50:19 NGC 9 - Galaxy Pegasus 13.5 00:08:54 23:49:04 NGC 10 - Galaxy Sculptor 12.5 00:08:34 -33:51:28 NGC 11 - Galaxy Andromeda 13.7 00:08:42 37:26:53 NGC 12 - Galaxy Pisces 13.1 00:08:45 04:36:44 NGC 13 - Galaxy Andromeda 13.2 00:08:48 33:25:59 NGC 14 - Galaxy Pegasus 12.1 00:08:46 15:48:57 NGC 15 - Galaxy Pegasus 13.8 00:09:02 21:37:30 NGC 16 - Galaxy Pegasus 12.0 00:09:04 27:43:48 NGC 17 NGC 34 Galaxy Cetus 14.4 00:11:07 -12:06:28 NGC 18 - Double Star Pegasus - 00:09:23 27:43:56 NGC 19 - Galaxy Andromeda 13.3 00:10:41 32:58:58 NGC 20 See NGC 6 Galaxy Andromeda 13.1 00:09:33 33:18:32 NGC 21 NGC 29 Galaxy Andromeda 12.7 00:10:47 33:21:07 NGC 22 - Galaxy Pegasus 13.6 00:09:48 27:49:58 NGC 23 - Galaxy Pegasus 12.0 00:09:53 25:55:26 NGC 24 - Galaxy Sculptor 11.6 00:09:56 -24:57:52 NGC 25 - Galaxy Phoenix 13.0 00:09:59 -57:01:13 NGC 26 - Galaxy Pegasus 12.9 00:10:26 25:49:56 NGC 27 - Galaxy Andromeda 13.5 00:10:33 28:59:49 NGC 28 - Galaxy Phoenix 13.8 00:10:25 -56:59:20 NGC 29 See NGC 21 Galaxy Andromeda 12.7 00:10:47 33:21:07 NGC 30 - Double Star Pegasus - 00:10:51 21:58:39 -
Astronomy Magazine 2020 Index
Astronomy Magazine 2020 Index SUBJECT A AAVSO (American Association of Variable Star Observers), Spectroscopic Database (AVSpec), 2:15 Abell 21 (Medusa Nebula), 2:56, 59 Abell 85 (galaxy), 4:11 Abell 2384 (galaxy cluster), 9:12 Abell 3574 (galaxy cluster), 6:73 active galactic nuclei (AGNs). See black holes Aerojet Rocketdyne, 9:7 airglow, 6:73 al-Amal spaceprobe, 11:9 Aldebaran (Alpha Tauri) (star), binocular observation of, 1:62 Alnasl (Gamma Sagittarii) (optical double star), 8:68 Alpha Canum Venaticorum (Cor Caroli) (star), 4:66 Alpha Centauri A (star), 7:34–35 Alpha Centauri B (star), 7:34–35 Alpha Centauri (star system), 7:34 Alpha Orionis. See Betelgeuse (Alpha Orionis) Alpha Scorpii (Antares) (star), 7:68, 10:11 Alpha Tauri (Aldebaran) (star), binocular observation of, 1:62 amateur astronomy AAVSO Spectroscopic Database (AVSpec), 2:15 beginner’s guides, 3:66, 12:58 brown dwarfs discovered by citizen scientists, 12:13 discovery and observation of exoplanets, 6:54–57 mindful observation, 11:14 Planetary Society awards, 5:13 satellite tracking, 2:62 women in astronomy clubs, 8:66, 9:64 Amateur Telescope Makers of Boston (ATMoB), 8:66 American Association of Variable Star Observers (AAVSO), Spectroscopic Database (AVSpec), 2:15 Andromeda Galaxy (M31) binocular observations of, 12:60 consumption of dwarf galaxies, 2:11 images of, 3:72, 6:31 satellite galaxies, 11:62 Antares (Alpha Scorpii) (star), 7:68, 10:11 Antennae galaxies (NGC 4038 and NGC 4039), 3:28 Apollo missions commemorative postage stamps, 11:54–55 extravehicular activity -
Prime Focus! When I Was Elected Editor/Secretary at the End of 1995, Never Would I Have Guessed That I Would Still Be Editing the Newsletter Today
Highlights of the May Sky - - - 5th - - - AM: Eta Aquariid meteor shower peaks. A Publication of the Kalamazoo Astronomical Society - - - 7th - - - Full Moon 6:45 am EDT - - - 12th - - - DAWN: A waning gibbous Moon, Jupiter, and Saturn KAS form a triangle. - - - 13th → 14th - - - General Meeting: Friday, May 1 @ 7:00 pm DAWN: The Moon moves between the Jupiter/Saturn Held Online via Zoom - See Page 24 for Details pairing and Mars. - - - 14th - - - Observing Session: Saturday, May 16 @ 9:00 pm Last Quarter Moon 10:08 am EDT Pandemic Conditions Permitting - See kasonline.org for Latest Info - - - 15th - - - DAWN: A waning crescent Board Meeting: Sunday, May 17 @ 5:00 pm Moon is 4½° to lower le of Mars. Held Online via Zoom - All Members Welcome - - - 21st - - - DUSK: Look for Mercury Observing Session: Saturday, May 30 @ 9:00 pm about 1° to the lower le of Pandemic Conditions Permitting - See kasonline.org for Latest Info brilliant Venus. - - - 22nd - - - New Moon 1:39 pm EDT Inside the Newsletter. - - - 23rd - - - DUSK: A very thin waxing The People of the KAS....................... p. 2 crescent Moon is 4½° to the Observaons...................................... p. 3 lower le of Venus. Board Meeng Minutes..................... p. 4 rd - - - 24 - - - Astronomy & Space News..................p. 5 DUSK: The Moon, Mercury, and Venus form a line about NASA Night Sky Notes........................ p. 7 12° long. Leonard James Ashby.........................p. 8 - - - 26th - - - Why Do Stars Shine?..........................p. 14 PM: The Moon is 6° le of Pollux in Gemini. KAS Member Astrophoto Highlight....p. 20 Hubble 30th Anniversary Image........ p. 21 - - - 28th - - - PM: The Moon is 6½° right May Night Sky................................... -
An Empirical Test and Calibration of H II Region Diagnostics
An Empirical Test and Calibration of H II Region Diagnostics Robert C. Kennicutt, Jr.,1,2 Fabio Bresolin,3,4 Howard French,5,6 Pierre Martin7 ABSTRACT We present spectrophotometry in the 3600–9700 A˚ region for a sample of 39 H II regions in the Galaxy and Magellanic Clouds, for which independent information is available on the spectral types and effective temperatures of the ionizing stars. The spectra have been used to evaluate nebular diagnostics of stellar temperature, metal abundance, and ionization parameter, and compare the observed behavior of the line indices with predictions of nebular photoionization models. We observe a strong degen- eracy between forbidden-line sequences produced by changes in stellar Teff and metal abundance, which severely complicates the application of many forbidden-line diagnos- tics to extragalactic H II regions. Our data confirm however that the Edmunds & Pagel [O II]+[O III] abundance index and the V´ılchez & Pagel η′ index provide more robust diagnostics of metal abundance and stellar effective temperature, respectively. A com- parison of the fractional helium ionization of the H II regions with stellar temperature confirms the reliability of the spectral type vs Teff calibration for the relevant temper- ature range Teff ≤ 38000 K. We use empirical relations between the nebular hardness indices and Teff to reinvestigate the case for systematic variations in the stellar effective temperatures and the upper IMFs of massive stars in extragalactic H II regions. The data are consistent with a significant softening of the ionizing spectra (consistent with cooler stellar temperatures) with increasing metal abundance, especially for Z ≤ Z⊙. -
The Astronomer Magazine Index
The Astronomer Magazine Index The numbers in brackets indicate approx lengths in pages (quarto to 1982 Aug, A4 afterwards) 1964 May p1-2 (1.5) Editorial (Function of CA) p2 (0.3) Retrospective meeting after 2 issues : planned date p3 (1.0) Solar Observations . James Muirden , John Larard p4 (0.9) Domes on the Mare Tranquillitatis . Colin Pither p5 (1.1) Graze Occultation of ZC620 on 1964 Feb 20 . Ken Stocker p6-8 (2.1) Artificial Satellite magnitude estimates : Jan-Apr . Russell Eberst p8-9 (1.0) Notes on Double Stars, Nebulae & Clusters . John Larard & James Muirden p9 (0.1) Venus at half phase . P B Withers p9 (0.1) Observations of Echo I, Echo II and Mercury . John Larard p10 (1.0) Note on the first issue 1964 Jun p1-2 (2.0) Editorial (Poor initial response, Magazine name comments) p3-4 (1.2) Jupiter Observations . Alan Heath p4-5 (1.0) Venus Observations . Alan Heath , Colin Pither p5 (0.7) Remarks on some observations of Venus . Colin Pither p5-6 (0.6) Atlas Coeli corrections (5 stars) . George Alcock p6 (0.6) Telescopic Meteors . George Alcock p7 (0.6) Solar Observations . John Larard p7 (0.3) R Pegasi Observations . John Larard p8 (1.0) Notes on Clusters & Double Stars . John Larard p9 (0.1) LQ Herculis bright . George Alcock p10 (0.1) Observations of 2 fireballs . John Larard 1964 Jly p2 (0.6) List of Members, Associates & Affiliations p3-4 (1.1) Editorial (Need for more members) p4 (0.2) Summary of June 19 meeting p4 (0.5) Exploding Fireball of 1963 Sep 12/13 . -
The COLOUR of CREATION Observing and Astrophotography Targets “At a Glance” Guide
The COLOUR of CREATION observing and astrophotography targets “at a glance” guide. (Naked eye, binoculars, small and “monster” scopes) Dear fellow amateur astronomer. Please note - this is a work in progress – compiled from several sources - and undoubtedly WILL contain inaccuracies. It would therefor be HIGHLY appreciated if readers would be so kind as to forward ANY corrections and/ or additions (as the document is still obviously incomplete) to: [email protected]. The document will be updated/ revised/ expanded* on a regular basis, replacing the existing document on the ASSA Pretoria website, as well as on the website: coloursofcreation.co.za . This is by no means intended to be a complete nor an exhaustive listing, but rather an “at a glance guide” (2nd column), that will hopefully assist in choosing or eliminating certain objects in a specific constellation for further research, to determine suitability for observation or astrophotography. There is NO copy right - download at will. Warm regards. JohanM. *Edition 1: June 2016 (“Pre-Karoo Star Party version”). “To me, one of the wonders and lures of astronomy is observing a galaxy… realizing you are detecting ancient photons, emitted by billions of stars, reduced to a magnitude below naked eye detection…lying at a distance beyond comprehension...” ASSA 100. (Auke Slotegraaf). Messier objects. Apparent size: degrees, arc minutes, arc seconds. Interesting info. AKA’s. Emphasis, correction. Coordinates, location. Stars, star groups, etc. Variable stars. Double stars. (Only a small number included. “Colourful Ds. descriptions” taken from the book by Sissy Haas). Carbon star. C Asterisma. (Including many “Streicher” objects, taken from Asterism. -
2021 NASA Explore Science Planning Guide
National Aeronautics and Space Administration 2021 www.nasa.gov All of our missions have that basic ingredient of perseverance, whether it is the OSIRIS-REx team finding many surprises at asteroid Bennu and adapting its work to still make bold discoveries, or the James Webb Space Telescope, whose team Science and discovery have always required us to persevere. has also persevered in this period to continue advancing the Through unprecedented times. Through storms and turbulence. world’s most complex telescope on its journey to the stars. Our teams also face challenges in missions closer to the Sun Perseverance is more than facing challenges. It demonstrates than we’ve ever ventured, and our fleet of Earth observation our ability to hold on to a worthy goal with resilience. It pushes satellites and the teams behind them consistently strive to us to keep doing the next right thing—to achieve something keep us focused on our own home planet so we can better beyond ourselves. In that spirit, NASA Science, our nation, and understand and also protect it. And our newest division, the world continue to persevere. Biological and Physical Sciences, helps us persevere by understanding and protecting life in space as part of our human The year 2020 often made me think of the anonymous quote: exploration programs. “The best view comes after the hardest climb.” I have never been so proud to lead our team of explorers and enablers. All of us persevere and discover together through the common I watched as we began to hunker down in our homes at the experience of science. -
Annual Report 2013
ESO European Organisation for Astronomical Research in the Southern Hemisphere Annual Report 2013 ESO European Organisation for Astronomical Research in the Southern Hemisphere Annual Report 2013 presented to the Council by the Director General Prof. Tim de Zeeuw The European Southern Observatory ESO, the European Southern Observa- tory, is the foremost intergovernmental astronomy organisation in Europe. It is ESO/J. GirardESO/J. supported by 15 countries: Austria, Belgium, Brazil1, the Czech Republic, Denmark, France, Finland, Germany, Italy, the Netherlands, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Several other countries have expressed an interest in membership. Created in 1962, ESO carries out an ambitious programme focussed on the design, construction and operation of powerful ground-based observing facilities, enabling astronomers to make important scientific discoveries. ESO also plays a leading role in promoting and organising cooperation in astro- nomical research. ESO operates three world-class observ- The VLT uses a powerful laser to create a guide star ing sites in the Atacama Desert region in the night sky. of Chile: La Silla, Paranal and Chajnantor. ESO’s first site is at La Silla, sited flagship facility of European astronomy. magnitude 30 have been obtained in a 2400 metres above sea level on a moun- Paranal is situated about 130 kilometres one-hour exposure. This corresponds tain 600 kilo metres north of Santiago south of Antofagasta in Chile, 12 kilo- to seeing objects that are four billion de Chile. It is equipped with several opti- metres inland from the Pacific coast in times fainter than those seen with the cal telescopes with mirror diameters of one of the driest areas in the world. -
Twenty Years of Fors Twenty Years of Fors
TWENTY YEARS OF FORS TWENTY YEARS OF FORS Front cover: Messier 66 Of‘‘ all instruments at Paranal, FORS is the Swiss Army knife. ’’ Editor, Design,Typesetting: Henri M.J. Boffin © ESO 2019 TWENTY YEARS OF FORS Twenty years ago, in 1999, the first of the two FORS instrument started regular operations. If FORS1 was removed after 10 years of operations, its twin, FORS2, is still very much in use, being one of the most demanded instruments at the Very Large Telescope, despite its age. This booklet aims at celebrating these two formidable workhorses by putting together, after a description of the instruments and their productivity, a subjective collection of ESO press releases dealing with them. The first set of press releases present the history of the instruments, while the remaining ones showcase some of the astounding achievements that they allowed. In between, a few among the most iconic images ever produced by FORS1 and FORS2 are shown. The list of scientific papers on which the science press releases were based is given at the end, together with a few of the Messenger articles that described the instruments. Table of Contents The FORS Instruments 5 FORS: the most powerful eye 8 First Major Astronomical Instrument Mounted on VLT 10 A Forceful Demonstration by FORS 11 Next VLT Instrument Ready for the Astronomers 14 The Comet with a Broken Heart 17 New Image of Comet Halley in the Cold 18 ESO Observations Show First Interstellar Asteroid is Like Nothing Seen Before 21 VLT Rediscovers Life on Earth 22 Inferno World with Titanium Skies 25 The -
Deep Sky Challenge
The Night Sky in May, 2020 May, June and July are not good months for observing since the days are long and the nights are short and not very dark. However, the nights are warm and sometimes too hot and muggy to lie in bed if you can't sleep. This is a good time to go into the garden, open a reclining chair and browse the night sky with a pair of binoculars. The Milky Way can look magnificent at this time of year. You may also wake before dawn in which case you can look out to see the morning objects in the sky. On May 1st, the Sun will rise at 05:35 and set at 20:41 BST. By the end of the month it will be rising at 04:49 and setting at 21:28 BST! There will be a New Moon on May 22nd and a Full Moon on May 7th. The best time for stargazing will therefore be the middle of the month.This is not a bad month for planets! There are some to be seen. For many weeks now we have become used to the magnificent sight of Venus blazing in the west after sunset. However this is about to change. The planet will be at inferior conjunction on June 3rd. This means that it will be lined up directly between the Earth and the Sun. Thus the light from the Sun will drown out Venus and it will no longer be visible to us. However you may find it interesting to watch Venus change from the beginning to the end of the month.