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Mr R) [ Ndwslffidr
SUMMER 1994 TI,D VOLUME 17, NO.2 /\lMr R) [ NDWSLffiDR Comet Shoemaker-Levy 9 to Hit Jupiter Editor's Notes The Great Jupiter Comet Bash! Many changes have come to MIRA recently. For Get a front rorv seat to witness the cataclysmic one, the projected move to the new California State crash of Comet Shoemaker-Levy 9 into Jupiter. You University at Monterey Bay campus will become a re- are invited to The Great Comet Bash, a benefit event ality. Remodeling of the former Fort Ord building for MIRA, otr July 16th, starting at 6:00 p.m. at the scheduled for transfer to MIRA has gone to the draw- Monterey Conference Center. ing board (the computer screen?) at The Paul Davis You will be a part of an entertaining and educa- Partnership. Soon, MIRA's classrooms rvill surround a evening dinosaurs, music, good light- and greenery-filled atrium on the ground floor tional of astronoffiy, food, space art, and dance. of what was once an unprepossessing military struc- ture. The library and research facilities will occupy the second floor, and administrative offices and more Featured events include: research areas will take over the third level. At last, o Live pictures from the Space Telescope kstitute our many endeavors can be centralized in a single lo- o Historian Tom Logan on lost civilizations and comets cation, accessible to all, and convenient to other insti- o A children's comet art contest tutions committed to education and research. MIRA o Images from ground-based observatories sent via Internet of has some very exciting proposals under consideration the impact by a variety of public and private agencies. -
Ocmthlion@Newstelter
=K":c·k r/ ,,0..: t9-j Ocmthlion@Newstelter Volume II, Number 12 August, 1981 Occultation Newsletter is published by the International Occultation Timing Association. Editor and Compositor: H. F. DaBo11; 6 N 106 Whit2 Oak Lane; St. Charles, IL 60174; U.S.A. Please send editorial metters to the above, but send address changes, requests, matters of circulation, and other IOTA business to IOTA; P.0. Bo-x 596; Tiniey Park; IL 60477; U.S.A. FROM THE PUBLISHER John Phelps reports that the IOTA treasury balance stands at about $2000, so that no membership or ba- For subscription purposes, this is the second issue sic subscription price increase will be needed this of 1981. year, in spite of general inflation and substantial postal rate increases. The only increase (last one o.n.'s price is $1/'issue, or $4/year (4 issues) in- on January I) is the extra price paid by overseas m eluding first class surface mailing, and air mail to non-IOTA o.n. subscribers for airmail delivery. Mexico. Back issues also are priced at $1/issue. Please see the masthead for the ordering address. Some members have suggested that IOTA incorporate as Air mail shipment of o.n. subscriptions is $1.80/yr. a non-profit organization; some advantages of doing extra, outside the U.S.A., Canada, and Mexico. this are described below. Our inclination now is to incorporate, but before we do so, we will give you a IOTA membership, subscription included, is $7/year chance to express your feelings about it, pro or for residents of North America (including Mexico) con, by writing to me or to the IOTA address in Tin- and $9/year for others, to cover costs of overseas Icy Park, IL. -
Variable Star Classification and Light Curves Manual
Variable Star Classification and Light Curves An AAVSO course for the Carolyn Hurless Online Institute for Continuing Education in Astronomy (CHOICE) This is copyrighted material meant only for official enrollees in this online course. Do not share this document with others. Please do not quote from it without prior permission from the AAVSO. Table of Contents Course Description and Requirements for Completion Chapter One- 1. Introduction . What are variable stars? . The first known variable stars 2. Variable Star Names . Constellation names . Greek letters (Bayer letters) . GCVS naming scheme . Other naming conventions . Naming variable star types 3. The Main Types of variability Extrinsic . Eclipsing . Rotating . Microlensing Intrinsic . Pulsating . Eruptive . Cataclysmic . X-Ray 4. The Variability Tree Chapter Two- 1. Rotating Variables . The Sun . BY Dra stars . RS CVn stars . Rotating ellipsoidal variables 2. Eclipsing Variables . EA . EB . EW . EP . Roche Lobes 1 Chapter Three- 1. Pulsating Variables . Classical Cepheids . Type II Cepheids . RV Tau stars . Delta Sct stars . RR Lyr stars . Miras . Semi-regular stars 2. Eruptive Variables . Young Stellar Objects . T Tau stars . FUOrs . EXOrs . UXOrs . UV Cet stars . Gamma Cas stars . S Dor stars . R CrB stars Chapter Four- 1. Cataclysmic Variables . Dwarf Novae . Novae . Recurrent Novae . Magnetic CVs . Symbiotic Variables . Supernovae 2. Other Variables . Gamma-Ray Bursters . Active Galactic Nuclei 2 Course Description and Requirements for Completion This course is an overview of the types of variable stars most commonly observed by AAVSO observers. We discuss the physical processes behind what makes each type variable and how this is demonstrated in their light curves. Variable star names and nomenclature are placed in a historical context to aid in understanding today’s classification scheme. -
Solar Writer Report for Abraham Lincoln
FIXED STARS A Solar Writer Report for Abraham Lincoln Written by Diana K Rosenberg Compliments of:- Stephanie Johnson Seeing With Stars Astrology PO Box 159 Stepney SA 5069 Australia Tel/Fax: +61 (08) 8331 3057 Email: [email protected] Web: www.esotech.com.au Page 2 Abraham Lincoln Natal Chart 12 Feb 1809 12:40:56 PM UT +0:00 near Hodgenville 37°N35' 085°W45' Tropical Placidus 22' 13° 08°ˆ ‡ 17' ¾ 06' À ¿É ‰ 03° ¼ 09° 00° 06° 09°06° ˆ ˆ ‡ † ‡ 25° 16' 41'08' 40' † 01' 09' Œ 29' ‰ 9 10 23° ¶ 8 27°‰ 11 Ï 27° 01' ‘ ‰02' á 7 12 ‘ áá 23° á 23° ¸ 23°Š27' á Š à „ 28' 28' 6 18' 1 10°‹ º ‹37' 13° 05' ‹ 5 Á 22° ½ 27' 2 4 01' Ü 3 07° Œ ƒ » 09' 23° 09° Ý Ü 06° 16' 06' Ê 00°ƒ 13° 22' Ý 17' 08°‚ Page 23 Astrological Summary Chart Point Positions: Abraham Lincoln Planet Sign Position House Comment The Moon Capricorn 27°Cp01' 12th The Sun Aquarius 23°Aq27' 12th read into 1st House Mercury Pisces 10°Pi18' 1st Venus Aries 7°Ar27' 1st read into 2nd House Mars Libra 25°Li29' 8th Jupiter Pisces 22°Pi05' 1st Saturn Sagittarius 3°Sg08' 9th read into 10th House Uranus Scorpio 9°Sc40' 8th Neptune Sagittarius 6°Sg41' 9th read into 10th House Pluto Pisces 13°Pi37' 1st The North Node Scorpio 6°Sc09' 8th The South Node Taurus 6°Ta09' 2nd The Ascendant Aquarius 23°Aq28' 1st The Midheaven Sagittarius 8°Sg22' 10th The Part of Fortune Capricorn 27°Cp02' 12th Chart Point Aspects Planet Aspect Planet Orb App/Sep The Moon Square Mars 1°32' Separating The Moon Conjunction The Part of Fortune 0°00' Applying The Sun Trine Mars 2°02' Applying The Sun Conjunction The Ascendant -
Planets and Exoplanets
NASE Publications Planets and exoplanets Planets and exoplanets Rosa M. Ros, Hans Deeg International Astronomical Union, Technical University of Catalonia (Spain), Instituto de Astrofísica de Canarias and University of La Laguna (Spain) Summary This workshop provides a series of activities to compare the many observed properties (such as size, distances, orbital speeds and escape velocities) of the planets in our Solar System. Each section provides context to various planetary data tables by providing demonstrations or calculations to contrast the properties of the planets, giving the students a concrete sense for what the data mean. At present, several methods are used to find exoplanets, more or less indirectly. It has been possible to detect nearly 4000 planets, and about 500 systems with multiple planets. Objetives - Understand what the numerical values in the Solar Sytem summary data table mean. - Understand the main characteristics of extrasolar planetary systems by comparing their properties to the orbital system of Jupiter and its Galilean satellites. The Solar System By creating scale models of the Solar System, the students will compare the different planetary parameters. To perform these activities, we will use the data in Table 1. Planets Diameter (km) Distance to Sun (km) Sun 1 392 000 Mercury 4 878 57.9 106 Venus 12 180 108.3 106 Earth 12 756 149.7 106 Marte 6 760 228.1 106 Jupiter 142 800 778.7 106 Saturn 120 000 1 430.1 106 Uranus 50 000 2 876.5 106 Neptune 49 000 4 506.6 106 Table 1: Data of the Solar System bodies In all cases, the main goal of the model is to make the data understandable. -
Ww W.Havastro.Co.Uk
th A Happy 24 Anniversary to all of our members and organisers www.havastro.co.uk This M onth Hubble uncovers the farthest star ever seen We welcome Konrad Malin-Smith on the ocassion of our 24th More than halfway across the Universe, an enormous blue star Anniversary and look forward to his talk, “In The Beginning”. nicknamed Icarus is the farthest individual star ever seen. We are also looking forward to having some drinks, nibbles Normally, it would be much too faint to view, even with the and, of course , a wonderful cake from Liz Watson, who world’s largest telescopes. But through a quirk of nature that never ceases to amaze us with her creations. tremendously amplifies the star’s feeble glow, astronomers using NASA’s Hubble Space Telescope were able to pinpoint Last Month this faraway star and set a new distance record. They also used Icarus to test one theory of dark matter, and to probe the We had a very good talk by Jerry Stone, a leading speaker on make-up of a foreground galaxy cluster. The star, harboured in space explorationwho gave a talk on “The Way to The Stars”. a very distant spiral galaxy, is so far away that its light has taken nine billion years to reach Earth. It appears to us as it did Members News when the universe was about 30 percent of its current age. The team of astronomers dubbed the star “Icarus,” after the We are pleased to have Sid join us this evening for our Greek mythological character who flew too near the Sun on anniversary and we thank Tony for collecting him from his wings of feathers and wax that melted. -
00E the Construction of the Universe Symphony
The basic construction of the Universe Symphony. There are 30 asterisms (Suites) in the Universe Symphony. I divided the asterisms into 15 groups. The asterisms in the same group, lay close to each other. Asterisms!! in Constellation!Stars!Objects nearby 01 The W!!!Cassiopeia!!Segin !!!!!!!Ruchbah !!!!!!!Marj !!!!!!!Schedar !!!!!!!Caph !!!!!!!!!Sailboat Cluster !!!!!!!!!Gamma Cassiopeia Nebula !!!!!!!!!NGC 129 !!!!!!!!!M 103 !!!!!!!!!NGC 637 !!!!!!!!!NGC 654 !!!!!!!!!NGC 659 !!!!!!!!!PacMan Nebula !!!!!!!!!Owl Cluster !!!!!!!!!NGC 663 Asterisms!! in Constellation!Stars!!Objects nearby 02 Northern Fly!!Aries!!!41 Arietis !!!!!!!39 Arietis!!! !!!!!!!35 Arietis !!!!!!!!!!NGC 1056 02 Whale’s Head!!Cetus!! ! Menkar !!!!!!!Lambda Ceti! !!!!!!!Mu Ceti !!!!!!!Xi2 Ceti !!!!!!!Kaffalijidhma !!!!!!!!!!IC 302 !!!!!!!!!!NGC 990 !!!!!!!!!!NGC 1024 !!!!!!!!!!NGC 1026 !!!!!!!!!!NGC 1070 !!!!!!!!!!NGC 1085 !!!!!!!!!!NGC 1107 !!!!!!!!!!NGC 1137 !!!!!!!!!!NGC 1143 !!!!!!!!!!NGC 1144 !!!!!!!!!!NGC 1153 Asterisms!! in Constellation Stars!!Objects nearby 03 Hyades!!!Taurus! Aldebaran !!!!!! Theta 2 Tauri !!!!!! Gamma Tauri !!!!!! Delta 1 Tauri !!!!!! Epsilon Tauri !!!!!!!!!Struve’s Lost Nebula !!!!!!!!!Hind’s Variable Nebula !!!!!!!!!IC 374 03 Kids!!!Auriga! Almaaz !!!!!! Hoedus II !!!!!! Hoedus I !!!!!!!!!The Kite Cluster !!!!!!!!!IC 397 03 Pleiades!! ! Taurus! Pleione (Seven Sisters)!! ! ! Atlas !!!!!! Alcyone !!!!!! Merope !!!!!! Electra !!!!!! Celaeno !!!!!! Taygeta !!!!!! Asterope !!!!!! Maia !!!!!!!!!Maia Nebula !!!!!!!!!Merope Nebula !!!!!!!!!Merope -
December 2019 BRAS Newsletter
A Monthly Meeting December 11th at 7PM at HRPO (Monthly meetings are on 2nd Mondays, Highland Road Park Observatory). Annual Christmas Potluck, and election of officers. What's In This Issue? President’s Message Secretary's Summary Outreach Report Asteroid and Comet News Light Pollution Committee Report Globe at Night Member’s Corner – The Green Odyssey Messages from the HRPO Friday Night Lecture Series Science Academy Solar Viewing Stem Expansion Transit of Murcury Edge of Night Natural Sky Conference Observing Notes: Perseus – Rescuer Of Andromeda, or the Hero & Mythology Like this newsletter? See PAST ISSUES online back to 2009 Visit us on Facebook – Baton Rouge Astronomical Society Baton Rouge Astronomical Society Newsletter, Night Visions Page 2 of 25 December 2019 President’s Message I would like to thank everyone for having me as your president for the last two years . I hope you have enjoyed the past two year as much as I did. We had our first Members Only Observing Night (MOON) at HRPO on Sunday, 29 November,. New officers nominated for next year: Scott Cadwallader for President, Coy Wagoner for Vice- President, Thomas Halligan for Secretary, and Trey Anding for Treasurer. Of course, the nominations are still open. If you wish to be an officer or know of a fellow member who would make a good officer contact John Nagle, Merrill Hess, or Craig Brenden. We will hold our annual Baton Rouge “Gastronomical” Society Christmas holiday feast potluck and officer elections on Monday, December 9th at 7PM at HRPO. I look forward to seeing you all there. ALCon 2022 Bid Preparation and Planning Committee: We’ll meet again on December 14 at 3:00.pm at Coffee Call, 3132 College Dr F, Baton Rouge, LA 70808, UPCOMING BRAS MEETINGS: Light Pollution Committee - HRPO, Wednesday December 4th, 6:15 P.M. -
Journal of the Association of Lunar & Planetary Observers
ISSN-0039-2502 Journal of the Association of Lunar & Planetary Observers The Strolling Astronomer Volume 54, Number 1, Winter 2012 Now in Portable Document Format (PDF) for Macintosh and PC-compatible computers Online and in COLOR at http://www.alpo-astronomy.org Inside this issue . • ALCon 2012 information • What’s REALLY up with those Venusian clouds? • Whole-disk brightness measurements of Mars • A ‘Great White Spot’ on Saturn? • The Remote Planets in 2010 and 2011 . plus reports about your ALPO section activities and much, much more! Online image of the December 11, 2011 lunar eclipse taken by “Shutter Shooter” on the Gold Coast, Queensland, Australia. The first moon was taken at 10:30 pm local time, the second moon at 11:20 pm, the third moon 12:00midnight and the last blood-red moon was taken at 1:15 a.m. According to his web page, a Pentax X90 12.1 megapixel digital camera was used for image-capture, and Adobe PhotoShop CS5 was used to stitch the photos together and added a small amount of contrast/ brightness. Source: http://shutter-shooter.deviantart.com/art/Lunar-Eclipse-December-2011-273379748 Your Affordable Since 1975 Astro-Imaging Source #9534 ED80T Carbon Fiber Triplet Apochromatic Refractor $799.99 #9534 ED102T Carbon Fiber Triplet Apochromatic Refractor $1,999.99 #9530 The Leo Trio (M65, M66 and NGC 3628) – Taken with the Orion ED102T CF Refractor, StarShoot Pro V2.0, Orion Atlas EQ-G, and Orion StarShoot AutoGuider. 23 x 10 minute #9530 exposures combined. Orion image. StarShoot™ G3 Deep Space StarShoot™ AllSky Magnificent Mini AutoGuider Package Imaging Camera Camera $349.99 #24781 $499.99 #53082 Color $899.99 $499.99 #53083 Mono #52187 NTSC Std. -
108 Afocal Procedure, 105 Age of Globular Clusters, 25, 28–29 O
Index Index Achromats, 70, 73, 79 Apochromats (APO), 70, Averted vision Adhafera, 44 73, 79 technique, 96, 98, Adobe Photoshop Aquarius, 43, 99 112 (software), 108 Aquila, 10, 36, 45, 65 Afocal procedure, 105 Arches cluster, 23 B1620-26, 37 Age Archinal, Brent, 63, 64, Barkhatova (Bar) of globular clusters, 89, 195 catalogue, 196 25, 28–29 Arcturus, 43 Barlow lens, 78–79, 110 of open clusters, Aricebo radio telescope, Barnard’s Galaxy, 49 15–16 33 Basel (Bas) catalogue, 196 of star complexes, 41 Aries, 45 Bayer classification of stellar associations, Arp 2, 51 system, 93 39, 41–42 Arp catalogue, 197 Be16, 63 of the universe, 28 Arp-Madore (AM)-1, 33 Beehive Cluster, 13, 60, Aldebaran, 43 Arp-Madore (AM)-2, 148 Alessi, 22, 61 48, 65 Bergeron 1, 22 Alessi catalogue, 196 Arp-Madore (AM) Bergeron, J., 22 Algenubi, 44 catalogue, 197 Berkeley 11, 124f, 125 Algieba, 44 Asterisms, 43–45, Berkeley 17, 15 Algol (Demon Star), 65, 94 Berkeley 19, 130 21 Astronomy (magazine), Berkeley 29, 18 Alnilam, 5–6 89 Berkeley 42, 171–173 Alnitak, 5–6 Astronomy Now Berkeley (Be) catalogue, Alpha Centauri, 25 (magazine), 89 196 Alpha Orionis, 93 Astrophotography, 94, Beta Pictoris, 42 Alpha Persei, 40 101, 102–103 Beta Piscium, 44 Altair, 44 Astroplanner (software), Betelgeuse, 93 Alterf, 44 90 Big Bang, 5, 29 Altitude-Azimuth Astro-Snap (software), Big Dipper, 19, 43 (Alt-Az) mount, 107 Binary millisecond 75–76 AstroStack (software), pulsars, 30 Andromeda Galaxy, 36, 108 Binary stars, 8, 52 39, 41, 48, 52, 61 AstroVideo (software), in globular clusters, ANR 1947 -
On the Application of Stark Broadening Data Determined with a Semiclassical Perturbation Approach
Atoms 2014, 2, 357-377; doi:10.3390/atoms2030357 OPEN ACCESS atoms ISSN 2218-2004 www.mdpi.com/journal/atoms Article On the Application of Stark Broadening Data Determined with a Semiclassical Perturbation Approach Milan S. Dimitrijević 1,2,* and Sylvie Sahal-Bréchot 2 1 Astronomical Observatory, Volgina 7, 11060 Belgrade, Serbia 2 Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique, Observatoire de Paris, UMR CNRS 8112, UPMC, 5 Place Jules Janssen, 92195 Meudon Cedex, France; E-Mail: [email protected] (S.S.-B.) * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +381-64-297-8021; Fax: +381-11-2419-553. Received: 5 May 2014; in revised form: 20 June 2014 / Accepted: 16 July 2014 / Published: 7 August 2014 Abstract: The significance of Stark broadening data for problems in astrophysics, physics, as well as for technological plasmas is discussed and applications of Stark broadening parameters calculated using a semiclassical perturbation method are analyzed. Keywords: Stark broadening; isolated lines; impact approximation 1. Introduction Stark broadening parameters of neutral atom and ion lines are of interest for a number of problems in astrophysical, laboratory, laser produced, fusion or technological plasma investigations. Especially the development of space astronomy has enabled the collection of a huge amount of spectroscopic data of all kinds of celestial objects within various spectral ranges. Consequently, the atomic data for trace elements, which had not been -
Aquarius, the Watering Can Man by Magda Streicher [email protected]
deepsky delights Aquarius, the Watering Can Man by Magda Streicher [email protected] Aquarius is by no means just another constellation – it’s quite simply something exceptional in its own right. Aquarius the Image source: Stellarium water-bearer spreads out its lanky image just north of Capricornus the sea-goat. Other ier, the French astronomer. Averted vision well-known water constellations are Piscis yields the best view, which sees the object Austrinus the southern fish, Cetus the whale, brightening relatively quickly to a core that Delphinus the dolphin and Hydra the water appears slightly more square than round and snake. The water-bearer was so named due less concentrated than most globulars. Not to the Sun’s entry into the constellation dur- at all easy to resolve, although I can pick up ing the Babylonian monsoon season. The a grainy tangerine skin impression, which image portrays a man pouring water from a makes me suspect partial resolution. pitcher he’s holding in his right hand. Little sprays of brighter stars look like numerous Just 1.2 degrees to the east, arguably one of drops of water and stand out well against the most interesting documented clusters or the fainter background star-field. When star asterisms can be seen. NGC 6994, bet- Aquarius is about appear in the east, Albali, ter known as Messier 73, consists of a cluster or Epsilon Aquarii, at magnitude 3.7, pops of only four stars, which the University of up as the western-most star in the constella- Padua in Italy places at different distances as tion, as if to say “Here I am!” field stars.