June 2019 Newsletter
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Mathématiques Et Espace
Atelier disciplinaire AD 5 Mathématiques et Espace Anne-Cécile DHERS, Education Nationale (mathématiques) Peggy THILLET, Education Nationale (mathématiques) Yann BARSAMIAN, Education Nationale (mathématiques) Olivier BONNETON, Sciences - U (mathématiques) Cahier d'activités Activité 1 : L'HORIZON TERRESTRE ET SPATIAL Activité 2 : DENOMBREMENT D'ETOILES DANS LE CIEL ET L'UNIVERS Activité 3 : D'HIPPARCOS A BENFORD Activité 4 : OBSERVATION STATISTIQUE DES CRATERES LUNAIRES Activité 5 : DIAMETRE DES CRATERES D'IMPACT Activité 6 : LOI DE TITIUS-BODE Activité 7 : MODELISER UNE CONSTELLATION EN 3D Crédits photo : NASA / CNES L'HORIZON TERRESTRE ET SPATIAL (3 ème / 2 nde ) __________________________________________________ OBJECTIF : Détermination de la ligne d'horizon à une altitude donnée. COMPETENCES : ● Utilisation du théorème de Pythagore ● Utilisation de Google Earth pour évaluer des distances à vol d'oiseau ● Recherche personnelle de données REALISATION : Il s'agit ici de mettre en application le théorème de Pythagore mais avec une vision terrestre dans un premier temps suite à un questionnement de l'élève puis dans un second temps de réutiliser la même démarche dans le cadre spatial de la visibilité d'un satellite. Fiche élève ____________________________________________________________________________ 1. Victor Hugo a écrit dans Les Châtiments : "Les horizons aux horizons succèdent […] : on avance toujours, on n’arrive jamais ". Face à la mer, vous voyez l'horizon à perte de vue. Mais "est-ce loin, l'horizon ?". D'après toi, jusqu'à quelle distance peux-tu voir si le temps est clair ? Réponse 1 : " Sans instrument, je peux voir jusqu'à .................. km " Réponse 2 : " Avec une paire de jumelles, je peux voir jusqu'à ............... km " 2. Nous allons maintenant calculer à l'aide du théorème de Pythagore la ligne d'horizon pour une hauteur H donnée. -
Catching up with Barnard's Star. Dave Eagle Within the Constellation Of
Catching Up with Barnard’s Star. Dave Eagle Within the constellation of Ophiuchus lies Barnard’s Star. It is a fairly faint red dwarf star of magnitude 9.53, six light years from Earth, so is fairly close to us. Its luminosity is 1/2,500th that of the Sun and 16% its mass. The diameter is estimated at about 140,000 miles, so it’s quite a small, faint star and well below naked eye visibility. So why is this star so well known? In 1916 Edward Barnard looked at a photographic plate of the area. When he compared this to a similar plate made in 1894, he noticed that one of the stars had moved between the time of the two plates being taken. Although all the stars in the sky in reality are all moving quite fast, from our remote vantage point on Earth most stars appear to appear virtually static during our lifetime as their apparent motion is extremely small. Barnard’s star, being so close and moving so fast, is one of the stars that bucks this trend. So fast indeed that it will subtend the apparent diameter equivalent to the Moon or Sun in about 176 years. So compared to other stars it is really shifting. The star is travelling at 103 miles per second and is approaching us at about 87 miles per second. In about 8,000 years it will become the closest star to us, at just under 4 light years and will have brightened to magnitude 8.6. Peter van de Camp caused great excitement in the 1960’s when he claimed to have discovered a planet (or more) around the star, due to wobbles superimposed on its movement. -
Deep-Sky Objects - Autumn Collection an Addition To: Explore the Universe Observing Certificate Third Edition RASC NW Cons Object Mag
Deep-Sky Objects - Autumn Collection An addition to: Explore the Universe Observing Certificate Third Edition RASC NW Cons Object Mag. PSA Observation Notes: Chart RA Dec Chart 1) Date Time 2 Equipment) 3) Notes # Observing Notes # Sgr M24 The Sagittarias Star Cloud 1. Mag 4.60 RA 18:16.5 Dec -18:50 Distance: 10.0 2. (kly)Star cloud, 95’ x 35’, Small Sagittarius star cloud 3. lies a little over 7 degrees north of teapot lid. Look for 7,8 dark Lanes! Wealth of stars. M24 has dark nebula 67 (interstellar dust – often visible in the infrared (cooler radiation)). Barnard 92 – near the edge northwest – oval in shape. Ref: Celestial Sampler Floating on Cloud 24, p.112 Sgr M18 - 1. RA 18 19.9, Dec -17.08 Distance: 4.9 (kly) 2. Lies less than 1deg above the northern edge of M24. 3 8 Often bypassed by showy neighbours, it is visible as a 67 small hazy patch. Note it's much closer (1/2 the distance) as compared to M24 (10kly) Sgr M17 (Swan Nebula) and M16 – HII region 1. Nebula and Open Clusters 2. 8 67 M17 Wikipedia 3. Ref: Celestial Sampler p. 113 Sct M11 Wild Duck Cluster 5.80 1. 18:51.1 -06:16 Distance: 6.0 (kly) 2. Open cluster, 13’, You can find the “wild duck” cluster, 3. as Admiral Smyth called it, nearly three degrees west of 67 8 Aquila’s beak lying in one of the densest parts of the summer Milky Way: the Scutum Star Cloud. 9 64 10 Vul M27 Dumbbell Nebula 1. -
The Brightest Stars Seite 1 Von 9
The Brightest Stars Seite 1 von 9 The Brightest Stars This is a list of the 300 brightest stars made using data from the Hipparcos catalogue. The stellar distances are only fairly accurate for stars well within 1000 light years. 1 2 3 4 5 6 7 8 9 10 11 12 13 No. Star Names Equatorial Galactic Spectral Vis Abs Prllx Err Dist Coordinates Coordinates Type Mag Mag ly RA Dec l° b° 1. Alpha Canis Majoris Sirius 06 45 -16.7 227.2 -8.9 A1V -1.44 1.45 379.21 1.58 9 2. Alpha Carinae Canopus 06 24 -52.7 261.2 -25.3 F0Ib -0.62 -5.53 10.43 0.53 310 3. Alpha Centauri Rigil Kentaurus 14 40 -60.8 315.8 -0.7 G2V+K1V -0.27 4.08 742.12 1.40 4 4. Alpha Boötis Arcturus 14 16 +19.2 15.2 +69.0 K2III -0.05 -0.31 88.85 0.74 37 5. Alpha Lyrae Vega 18 37 +38.8 67.5 +19.2 A0V 0.03 0.58 128.93 0.55 25 6. Alpha Aurigae Capella 05 17 +46.0 162.6 +4.6 G5III+G0III 0.08 -0.48 77.29 0.89 42 7. Beta Orionis Rigel 05 15 -8.2 209.3 -25.1 B8Ia 0.18 -6.69 4.22 0.81 770 8. Alpha Canis Minoris Procyon 07 39 +5.2 213.7 +13.0 F5IV-V 0.40 2.68 285.93 0.88 11 9. Alpha Eridani Achernar 01 38 -57.2 290.7 -58.8 B3V 0.45 -2.77 22.68 0.57 144 10. -
Anousheh Ansari
: Fort Worth Astronomical Society (Est. 1949) August 2010 Astronomical League Member At the August Meeting: Special Guest Anousheh Ansari Club Calendar – 2 – 3 Skyportunities Star Party & Club Reports – 5 House Calls by Ophiuchus – 6 Hubble’s Amazing Rescue – 8 Your Most Important Optics -- 9 Stargazers’ Diary – 11 1 Milky Way Over Colorado by Jim Murray August 2010 Sunday Monday Tuesday Wednesday Thursday Friday Saturday 1 2 3 4 5 6 7 Third Qtr Moon Challenge binary star for August: Make use of the New Viking 1 Orbiter 11:59 pm Moon Weekend for Alvan Clark 11 (ADS 11324) (Serpens Cauda) ceases operation better viewing at the 30 years ago Notable carbon star for August: Dark Sky Site Mars : Saturn O V Aquilae 1.9 Conjunction Mercury at greatest Challenge deep-sky object for August: eastern elongation Venus, Mars and Abell 53 (Aquila) Saturn all within a this evening binocular field of First in-flight New Moon view for the first 12 New Moon shuttle repair Neal Armstrong Weekend Weekend days of August. 15 years ago born 80 years ago 8 9 10 11 12 13 14 New Moon Moon at Perigee Double shadow (224,386 miles) transit on Jupiter 3RF Star Party 10:08 pm 1 pm 5:12am High in SSW Museum Star (A.T. @ 5:21 am) Party Venus : Saturn O . 3 of separation Perseid Meteor Watch Party @ 3RF New Moon Magellan enters Fairly consistent show Weekend orbit around Venus of about 60 per hour 20 years ago 15 16 17 18 19 20 21 Algol at Minima 2:45 am - In NE First Qtr Moon Total Solar 1:14 pm Eclipse in 7 years Nearest arc of totality takes in FWAS Grand Island NE St Joseph MO Meeting With Neptune @ Columbia MO Venus at greatest Opposition Anousheh Algol at Minima eastern elongation N of Nashville TN 11:34pm Low In NE 5 am N of Charleston SC Ansari this evening 22 23 24 25 26 27 28 Full Moon Moon at Apogee 2:05 pm (252,518.miles) GATE CODES Smallest of 2010 1 am to the (within 11 hrs of apogee) DARK SKY SITE will be changed st September 1 BE SURE YOU ARE CURRENT WITH DUES to Astroboy’s Day Job Venus : Mars receive new codes O 2 Conjunction 29 31 30 Anousheh Ansari’s Mission Patch at right. -
GTO Keypad Manual, V5.001
ASTRO-PHYSICS GTO KEYPAD Version v5.xxx Please read the manual even if you are familiar with previous keypad versions Flash RAM Updates Keypad Java updates can be accomplished through the Internet. Check our web site www.astro-physics.com/software-updates/ November 11, 2020 ASTRO-PHYSICS KEYPAD MANUAL FOR MACH2GTO Version 5.xxx November 11, 2020 ABOUT THIS MANUAL 4 REQUIREMENTS 5 What Mount Control Box Do I Need? 5 Can I Upgrade My Present Keypad? 5 GTO KEYPAD 6 Layout and Buttons of the Keypad 6 Vacuum Fluorescent Display 6 N-S-E-W Directional Buttons 6 STOP Button 6 <PREV and NEXT> Buttons 7 Number Buttons 7 GOTO Button 7 ± Button 7 MENU / ESC Button 7 RECAL and NEXT> Buttons Pressed Simultaneously 7 ENT Button 7 Retractable Hanger 7 Keypad Protector 8 Keypad Care and Warranty 8 Warranty 8 Keypad Battery for 512K Memory Boards 8 Cleaning Red Keypad Display 8 Temperature Ratings 8 Environmental Recommendation 8 GETTING STARTED – DO THIS AT HOME, IF POSSIBLE 9 Set Up your Mount and Cable Connections 9 Gather Basic Information 9 Enter Your Location, Time and Date 9 Set Up Your Mount in the Field 10 Polar Alignment 10 Mach2GTO Daytime Alignment Routine 10 KEYPAD START UP SEQUENCE FOR NEW SETUPS OR SETUP IN NEW LOCATION 11 Assemble Your Mount 11 Startup Sequence 11 Location 11 Select Existing Location 11 Set Up New Location 11 Date and Time 12 Additional Information 12 KEYPAD START UP SEQUENCE FOR MOUNTS USED AT THE SAME LOCATION WITHOUT A COMPUTER 13 KEYPAD START UP SEQUENCE FOR COMPUTER CONTROLLED MOUNTS 14 1 OBJECTS MENU – HAVE SOME FUN! -
The Fixed Stars Report Frederic Chopin
The Fixed Stars Report by Tara Cochrane for Frederic Chopin March 1, 1810 6:00 PM Warsaw, Poland Calculated for: Local Mean Time, Time Zone 0 hours West Latitude: 52 N 15 Longitude: 21 E 00 Your Company Name 1234 N. Your Address City, State 123456 Phone: 1-555-555-5555 [email protected] Introduction Report and Text Copyright 2009 Cosmic Patterns Software, Inc. The contents of this report are protected by Copyright law. By purchasing this report you agree to comply with this Copyright. This report interprets conjunctions of nearly every fixed star that has been given an astrological name to the planets, Asc, MC, 7th house cusp, and 4th cusp. Each interpretation given in this report is based on extensive research on the historical astrological meanings and myths associated with the fixed stars. A list of notable people who have the same conjunction aspect as you do is also given. This comprehensive analysis of the influence of the fixed stars combined with a list of notable people who also have this aspect provides you with extensive information, and hopefully astrologers who use this report can use this information to develop an even more refined and clearer understanding of the meaning of every fixed stars. Interpretations of the Fixed Stars Moon conjunct Dheneb, Orb: 0 deg 55 min Bold, willful, courageous, combative, astute, focused and unyielding characteristics may be indicated. Ascension to a position of leadership and renown is possible. There may be a great deal of personal charisma and emotional intensity, as well as an inclination towards obsession. -
Thursday, December 22Nd Swap Meet & Potluck Get-Together Next First
Io – December 2011 p.1 IO - December 2011 Issue 2011-12 PO Box 7264 Eugene Astronomical Society Annual Club Dues $25 Springfield, OR 97475 President: Sam Pitts - 688-7330 www.eugeneastro.org Secretary: Jerry Oltion - 343-4758 Additional Board members: EAS is a proud member of: Jacob Strandlien, Tony Dandurand, John Loper. Next Meeting: Thursday, December 22nd Swap Meet & Potluck Get-Together Our December meeting will be a chance to visit and share a potluck dinner with fellow amateur astronomers, plus swap extra gear for new and exciting equipment from somebody else’s stash. Bring some food to share and any astronomy gear you’d like to sell, trade, or give away. We will have on hand some of the gear that was donated to the club this summer, including mirrors, lenses, blanks, telescope parts, and even entire telescopes. Come check out the bargains and visit with your fellow amateur astronomers in a relaxed evening before Christmas. We also encourage people to bring any new gear or projects they would like to show the rest of the club. The meeting is at 7:00 on December 22nd at EWEB’s Community Room, 500 E. 4th in Eugene. Next First Quarter Fridays: December 2nd and 30th Our November star party was clouded out, along with a good deal of the month afterward. If that sounds familiar, that’s because it is: I changed the date in the previous sentence from October to November and left the rest of the sentence intact. Yes, our autumn weather is predictable. Here’s hoping for a lucky break in the weather for our two December star parties. -
A Profile of Humanity: the Cultural Signature of Earth's Inhabitants
International Journal of A profile of humanity: the cultural signature of Astrobiology Earth’s inhabitants beyond the atmosphere cambridge.org/ija Paul E. Quast Beyond the Earth foundation, Edinburgh, UK Research Article Abstract Cite this article: Quast PE (2018). A profile of The eclectic range of artefacts and ‘messages’ we dispatch into the vast expanse of space may humanity: the cultural signature of Earth’s become one of the most enduring remnants of our present civilization, but how does his pro- inhabitants beyond the atmosphere. tracted legacy adequately document the plurality of societal values and common, cultural heri- International Journal of Astrobiology 1–21. https://doi.org/10.1017/S1473550418000290 tage on our heterogeneous world? For decades now, this rendition of the egalitarian principle has been explored by the Search for Extra-Terrestrial Intelligence community in order to draft Received: 18 April 2018 theoretical responses to ‘who speaks for Earth?’ for hypothetical extra-terrestrial communica- Revised: 13 June 2018 tion strategies. However, besides the moral, ethical and democratic advancements made by Accepted: 21 June 2018 this particular enterprise, there remains little practical exemplars of implementing this gar- Key words: nered knowledge into other experimental elements that could function as mutual emissaries Active SETI; data storage; deep time messages; of Earth; physical artefacts that could provide accessible details about our present world for eternal memory archives; future archaeology; future archaeological observations by our space-faring progeny, potential visiting extrasolar long-term communication strategies; SETI; time capsules denizens or even for posterity. While some initiatives have been founded to investigate this enduring dilemma of humanity over the last half-century, there are very few comparative stud- Author for correspondence: ies in regards to how these objects, time capsules and transmission events collectively dissem- Paul E. -
Comet Panstarrs (C/2011 L4) & Comet Lemmon (C/2012 F6
Tucson Amateur Astronomy Association Observing our Desert Skies since 1954 Summer 2013 Volume LIX, Issue 2 Inside this issue: Comet PanSTARRS (C/2011 L4) & Comet Lemmon (C/2012 F6) President’s Msg 2 Our Programs 3-4 TAAA News 5-7 Featured Articles 8-14 Observing 15-16 Outreach News 17-18 Classified Ads 18 Contacts 19 Take Note! 20 May 2013 Night Sky Network Toolkits Help Teach Science is Fun Two comets grace our skies: Comet PanSTARRS (C/2011 L4) and Comet Moving Ahead at CAC Lemmon (C/2012 F6). Both images displayed here were taken by Dean 3rd Anniversary at CAC Ketelsen from Geology Vista on Catalina Highway. Comet Chris Impey’s Astronomy: PanSTARRS, above, sports a very State of the Art Program long anti-tail. This image was taken with Dean’s 70-200 Canon F/2.8 TAAA Ladies Night Out zoom, set to 90mm. This is 8 stacked images, three minutes each. The Observing Southern Skies; separation between Polaris (at the left Planetary Nebulae; edge) and γ Cephei (at the right edge) is 13.5 degrees. The comet’s anti-tail Ophiuchus is over 7 degrees long. Comet 18 May 2013 Lemmon, at right, was photographed Daytime Polar Alignment using Dean’s 14” Hyperstar. This image has a total exposure of 8 minutes. Visible is both a blue ion tail Explaining Astronomical towards the right and a more diffuse dust tail below. Note that Comet Lemmon was discovered by the Mt Lemmon Survey. For details about these images and more interesting stuff (astronomy and Distances and Scales otherwise), visit The Ketelsen’s Blog at http://theketelsens.blogspot.com/. -
Luglio – Settembre 2018
Raccolta di Flash news dal sito www.ilcosmo.net Luglio – settembre 2018. Encelado, la luna di Saturno con i suoi geyser. Credito illustrazione: https://www.focus.it/scienza/spazio/encelado-e-loceano-globale Questa raccolta consente l’archiviazione personale di tutte le Flash news comparse sulla homepage del nostro sito nel periodo sopra indicato. Non vi sono ulteriori commenti alle notizie. Sono impaginate in ordine cronologico di uscita. La redazione. Assemblato da Luigi Borghi. Associazione Culturale “Il C.O.S.MO.” (Circolo di Osservazione Scientifico-tecnologica di Modena); C.F.:94144450361 pag: 1 di 54 Questa raccolta, le copie arretrate, i suoi articoli, non possono essere duplicati e commercializzati. È vietata ogni forma di riproduzione, anche parziale, senza l’autorizzazione scritta del circolo “Il C.O.S.Mo”. La loro diffusione all’esterno del circolo e’ vietata. Può essere utilizzata solo dai soci per scopi didattici. - Costo: Gratuito sul WEB per i soci . Raccolta di Flash news dal sito www.ilcosmo.net 2-6-2018 – Bolle organiche fuoriescono da Encelado. Trovare forme di vita nel sistema solare è diventato ormai l’obiettivo del nuovo millennio, e non è escluso che si arrivi ad una svolta nel prossimo decennio. Sarebbe non solo una prima concreta risposta (anche se non esaustiva) alla atavica domanda “siamo soli nell’universo?”, ma anche l’identificazione di nuovi obiettivi per le prossime sonde automatiche. Sapere se c’è o c’è stata vita negli oceani nascosti dei satelliti di Giove e Saturno, piuttosto che nei profondi canyons di Marte, e poterla studiare, capire se alla base esiste il DNA come lo conosciamo noi o qualche cosa d’altro, rappresenterebbe una scoperta che rivoluzionerebbe il modo di pensare: chi siamo e cosa rappresentiamo. -
70 Ophiuchi – Realm of Orange Suns
STAR OF THE MONTH 70 Ophiuchi – Realm of Orange Suns by Steven C. Raine here is darkness of a perfect night sky all around be a separate constellation by the Arabians, judging by a except for an orange glow coming from twin spheres 13th century globe “now resting in the Borgian museum at T of light like sun-sized mandarins. The effect is Villetri.” (Motz & Nathanson, 1991.) almost like streetlights hidden in the dark and blurred to The nearness to our Sun is however only a small part of roundness by thick fog. Yet from here stars are visible this star’s renown, for 70 Ophiuchi is best known as a binary everywhere and not the stars of home although surprisingly star system. As you can see from Figure 2, the two stars similar. A clue to the location is the way the stars nearest orbit their shared centre of gravity—the barycentre—in 88 our own Sun have shifted, Sirius, Procyon and Alpha years. An orbital period which Dole notes is “almost identi- Centauri the most notably displaced and altered in radiance. cal with … Alpha Centauri A and Alpha Centauri B.” The Towards Orion is an unfamiliar star of third magnitude primary star 70 Ophiuchi A is a K1 type main sequence which happens to be a G2 type star—the Sun of humanity star with an absolute magnitude of +5.8 and the secondary (Dole, 1964). This is the environs near 70 Ophiuchi, a binary star 70 Ophiuchi B is another orange dwarf but somewhat star located amongst the closest of our celestial neighbours fainter with an absolute magnitude of +7.3 and a spectral a meagre 16.5 light years away.