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BRAS Newsletter August 2013
www.brastro.org August 2013 Next meeting Aug 12th 7:00PM at the HRPO Dark Site Observing Dates: Primary on Aug. 3rd, Secondary on Aug. 10th Photo credit: Saturn taken on 20” OGS + Orion Starshoot - Ben Toman 1 What's in this issue: PRESIDENT'S MESSAGE....................................................................................................................3 NOTES FROM THE VICE PRESIDENT ............................................................................................4 MESSAGE FROM THE HRPO …....................................................................................................5 MONTHLY OBSERVING NOTES ....................................................................................................6 OUTREACH CHAIRPERSON’S NOTES .........................................................................................13 MEMBERSHIP APPLICATION .......................................................................................................14 2 PRESIDENT'S MESSAGE Hi Everyone, I hope you’ve been having a great Summer so far and had luck beating the heat as much as possible. The weather sure hasn’t been cooperative for observing, though! First I have a pretty cool announcement. Thanks to the efforts of club member Walt Cooney, there are 5 newly named asteroids in the sky. (53256) Sinitiere - Named for former BRAS Treasurer Bob Sinitiere (74439) Brenden - Named for founding member Craig Brenden (85878) Guzik - Named for LSU professor T. Greg Guzik (101722) Pursell - Named for founding member Wally Pursell -
SEPTEMBER 2014 OT H E D Ebn V E R S E R V ESEPTEMBERR 2014
THE DENVER OBSERVER SEPTEMBER 2014 OT h e D eBn v e r S E R V ESEPTEMBERR 2014 FROM THE INSIDE LOOKING OUT Calendar Taken on July 25th in San Luis State Park near the Great Sand Dunes in Colorado, Jeff made this image of the Milky Way during an overnight camping stop on the way to Santa Fe, NM. It was taken with a Canon 2............................. First quarter moon 60D camera, an EFS 15-85 lens, using an iOptron SkyTracker. It is a single frame, with no stacking or dark/ 8.......................................... Full moon bias frames, at ISO 1600 for two minutes. Visible in this south-facing photograph is Sagittarius, and the 14............ Aldebaran 1.4˚ south of moon Dark Horse Nebula inside of the Milky Way. He processed the image in Adobe Lightroom. Image © Jeff Tropeano 15............................ Last quarter moon 22........................... Autumnal Equinox 24........................................ New moon Inside the Observer SEPTEMBER SKIES by Dennis Cochran ygnus the Swan dives onto center stage this other famous deep-sky object is the Veil Nebula, President’s Message....................... 2 C month, almost overhead. Leading the descent also known as the Cygnus Loop, a supernova rem- is the nose of the swan, the star known as nant so large that its separate arcs were known Society Directory.......................... 2 Albireo, a beautiful multi-colored double. One and named before it was found to be one wide Schedule of Events......................... 2 wonders if Albireo has any planets from which to wisp that came out of a single star. The Veil is see the pair up-close. -
The Midnight Sky: Familiar Notes on the Stars and Planets, Edward Durkin, July 15, 1869 a Good Way to Start – Find North
The expression "dog days" refers to the period from July 3 through Aug. 11 when our brightest night star, SIRIUS (aka the dog star), rises in conjunction* with the sun. Conjunction, in astronomy, is defined as the apparent meeting or passing of two celestial bodies. TAAS Fabulous Fifty A program for those new to astronomy Friday Evening, July 20, 2018, 8:00 pm All TAAS and other new and not so new astronomers are welcome. What is the TAAS Fabulous 50 Program? It is a set of 4 meetings spread across a calendar year in which a beginner to astronomy learns to locate 50 of the most prominent night sky objects visible to the naked eye. These include stars, constellations, asterisms, and Messier objects. Methodology 1. Meeting dates for each season in year 2018 Winter Jan 19 Spring Apr 20 Summer Jul 20 Fall Oct 19 2. Locate the brightest and easiest to observe stars and associated constellations 3. Add new prominent constellations for each season Tonight’s Schedule 8:00 pm – We meet inside for a slide presentation overview of the Summer sky. 8:40 pm – View night sky outside The Midnight Sky: Familiar Notes on the Stars and Planets, Edward Durkin, July 15, 1869 A Good Way to Start – Find North Polaris North Star Polaris is about the 50th brightest star. It appears isolated making it easy to identify. Circumpolar Stars Polaris Horizon Line Albuquerque -- 35° N Circumpolar Stars Capella the Goat Star AS THE WORLD TURNS The Circle of Perpetual Apparition for Albuquerque Deneb 1 URSA MINOR 2 3 2 URSA MAJOR & Vega BIG DIPPER 1 3 Draco 4 Camelopardalis 6 4 Deneb 5 CASSIOPEIA 5 6 Cepheus Capella the Goat Star 2 3 1 Draco Ursa Minor Ursa Major 6 Camelopardalis 4 Cassiopeia 5 Cepheus Clock and Calendar A single map of the stars can show the places of the stars at different hours and months of the year in consequence of the earth’s two primary movements: Daily Clock The rotation of the earth on it's own axis amounts to 360 degrees in 24 hours, or 15 degrees per hour (360/24). -
Visual Observing and Star Hopping
•What to observe. •Methods used to locate objects. •Using a planisphere. •Angular distance. •Using binoculars. •Using a telescope and a telrad. •Star hopping with a finderscope. •Useful resources – star charts. •So>ware that simulates the night-sky. What to Observe The Moon. Diameter about 3474 kms, distance about 384,000 kms. Comets, asteriods and planets. Example: Jupiter, diameter 140,000 kms, 780 million kms (about 43 light minutes or 0.00008 light years) from the Sun. Jupiter image at right by Chris Turton. Stars, variable stars and binary stars. Example: the Sun, diameter about 1.4 million kms, distance 150 million kms. You need solar filters or a specialised solar scope to observe the Sun. Example: the binary star alpha Centauri AB, 4.3 light years away. Open clusters. Example: Jewel Box (NGC 4755), size about 19 light years, distance 6400 light years. Contains around 100 stars. Jewel Box image at right by Rodney Moulder. Globular clusters. Example: M22 (NGC 6656), diameter 97 light years, distance 10,400 light years. Contains approximately 500,000 stars. M22 image at right by Claudio Sllo. Nebulae (clouds of dust and gas). Example: Tarantula Nebula ( NGC 2070) in the LMC, dimensions about 1800 by 1200 light years, distance 160,000 light years. Largest known star-forming region. Tarantula image at le> by Rob Keskull. Galaxies. Example: the barred spiral galaxy M83 (NGC 5236), diameter about 100,000 light years, distance 17 million light years. Contains over 35 billion stars. M83 image at right by Gerry Aarts. Methods Used to Locate Objects The method you use to locate astronomical objects will depend on the type of equipment you are using … GoTo with motorised mount. -
A Basic Requirement for Studying the Heavens Is Determining Where In
Abasic requirement for studying the heavens is determining where in the sky things are. To specify sky positions, astronomers have developed several coordinate systems. Each uses a coordinate grid projected on to the celestial sphere, in analogy to the geographic coordinate system used on the surface of the Earth. The coordinate systems differ only in their choice of the fundamental plane, which divides the sky into two equal hemispheres along a great circle (the fundamental plane of the geographic system is the Earth's equator) . Each coordinate system is named for its choice of fundamental plane. The equatorial coordinate system is probably the most widely used celestial coordinate system. It is also the one most closely related to the geographic coordinate system, because they use the same fun damental plane and the same poles. The projection of the Earth's equator onto the celestial sphere is called the celestial equator. Similarly, projecting the geographic poles on to the celest ial sphere defines the north and south celestial poles. However, there is an important difference between the equatorial and geographic coordinate systems: the geographic system is fixed to the Earth; it rotates as the Earth does . The equatorial system is fixed to the stars, so it appears to rotate across the sky with the stars, but of course it's really the Earth rotating under the fixed sky. The latitudinal (latitude-like) angle of the equatorial system is called declination (Dec for short) . It measures the angle of an object above or below the celestial equator. The longitud inal angle is called the right ascension (RA for short). -
September 2020 BRAS Newsletter
A Neowise Comet 2020, photo by Ralf Rohner of Skypointer Photography Monthly Meeting September 14th at 7:00 PM, via Jitsi (Monthly meetings are on 2nd Mondays at Highland Road Park Observatory, temporarily during quarantine at meet.jit.si/BRASMeets). GUEST SPEAKER: NASA Michoud Assembly Facility Director, Robert Champion What's In This Issue? President’s Message Secretary's Summary Business Meeting Minutes Outreach Report Asteroid and Comet News Light Pollution Committee Report Globe at Night Member’s Corner –My Quest For A Dark Place, by Chris Carlton Astro-Photos by BRAS Members Messages from the HRPO REMOTE DISCUSSION Solar Viewing Plus Night Mercurian Elongation Spooky Sensation Great Martian Opposition Observing Notes: Aquila – The Eagle 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 27 September 2020 President’s Message Welcome to September. You may have noticed that this newsletter is showing up a little bit later than usual, and it’s for good reason: release of the newsletter will now happen after the monthly business meeting so that we can have a chance to keep everybody up to date on the latest information. Sometimes, this will mean the newsletter shows up a couple of days late. But, the upshot is that you’ll now be able to see what we discussed at the recent business meeting and have time to digest it before our general meeting in case you want to give some feedback. Now that we’re on the new format, business meetings (and the oft neglected Light Pollution Committee Meeting), are going to start being open to all members of the club again by simply joining up in the respective chat rooms the Wednesday before the first Monday of the month—which I encourage people to do, especially if you have some ideas you want to see the club put into action. -
Equatorial Night Sky for August 2011
I N E D R I A C A S T N E O D I T A C L E O R N I G D S T S H A E P H M O O R C I . Z N O i s e d H e . p s i c e O l N t e u c d r Z e i n I H C t y h R I b e R n O s i k a C y l H s L w s E i E a t h w H ( h ) T F i n O s o D R l NORTH g e N a M f r t E A D X f O o e A H o C h M T t T . I ( o P N n S L o E c E i Z a P t r s “ E EQUATORIAL EDITION D A N h , H e O y T M a R g d T o N Y . l H E o ” K E h ) t W S . y . T T m E U W B n R I N The Evening Sky Map W D E T T AUGUST 2011 WH A MINOR E C FREE* EACH MONTH FOR YOU TO EXPLORE, LEARN & ENJOY THE NIGHT SKY O S L K CEPHEUS URSA Y E β R M T . A h A n SKY MAP SHOWS HOW e Get Sky Calendar on Twitter S P o i T N t C A Thuban a o E R l l r Sky Calendar – August 2011 J http://twitter.com/skymaps O t THE NIGHT SKY LOOKS e B h t U δ e s O N r n n L D o A c NE C & Alcor & I MAJOR I EARLY AUG 9 PM r T T e o URSA S Mizar v 1 Moon near Regulus (21° from Sun, evening sky) at 7h UT. -
The Evening Sky Map
I N E D R I A C A S T N E O D I T A C L E O R N I G D S T S H A E P H M O O R C I . Z N O p l f e i n h d o P t O o N ) l h a r g Z i u s , o I l C t P h R I r e o R N ( O o r C r H e t L p h p E E i s t D H a ( r g T F i . O B NORTH D R e N M h t E A X O e s A H U M C T . I P N S L E E P Z “ E A N H O NORTHERN HEMISPHERE M T R T Y N H E ” K E η ) W S . T T E W U B R N W D E T T W T H h A The Evening Sky Map e MAY 2021 E . C ) Cluster O N FREE* EACH MONTH FOR YOU TO EXPLORE, LEARN & ENJOY THE NIGHT SKY r S L a o K e Double r Y E t B h R M t e PERSEUS A a A r CASSIOPEIA n e S SKY MAP SHOWS HOW Get Sky Calendar on Twitter P δ r T C G C A CEPHEUS r E o R e J s O h Sky Calendar – May 2021 http://twitter.com/skymaps M39 s B THE NIGHT SKY LOOKS T U ( O i N s r L D o a j A NE I I a μ p T EARLY MAY PM T 10 r 61 M S o S 3 Last Quarter Moon at 19:51 UT. -
Q4 FY 2011 FINAL.Indd
Josh Carter of the Harvard-Smithsonian Center for Astrophysics was an author of a study in Science announcing the discovery of Kepler-16b, the fi rst confi rmed example of a circumbinary planet—a planet orbiting not one, but two stars. Report to the Regents Fourth Quarter, Fiscal Year 2011 Prepared by Offi ce of Policy and Analysis Broadening Access: Visitation Summary In fi scal year 2011, the Smithsonian counted 29.2 million visits to its museums in Washington, D.C. and New York, plus the National Zoological Park and Steven F. Udvar-Hazy Center—very similar to the fi scal year 2010 fi gure of 29.9 million. Th e Smithsonian Redesign project has identifi ed “unique visitors” as the key Smithsonian-wide web visitation metric to be tracked going forward. In fi scal year 2011, the Smithsonian counted approximately 79 million unique visitors to its numerous websites. Because this metric diff ers from the web “visits” metric reported previously, this fi gure cannot be directly compared with the fi gures A visitor in the Butterfl y Pavilion of the National Museum of Natural History given in previous Reports to the Regents. Visits to Smithsonian Venues and Traveling Exhibitions Fiscal Years 2009, 2010, and 2011 9 8 7 6 Millions 5 4 FY 2009 3 FY 2010 FY 2011 2 1 0 Freer/Sackler Renwick Air and Space Hirshhorn Heye Center-NY Natural History African Art Ripley Center Udvar-Hazy Reynolds Center Anacostia Postal Cooper-Hewitt-NY National Zoo SI Castle American History American Indian-Mall Report to the Regents, January 2012 1 Grand Challenges Highlights Understanding the American Experience Research This quarter saw the publication of The Jefferson Bible: Smithsonian Edition, a full-color facsimile of Th omas Jeff erson’s unique work The Life and Morals of Jesus of Nazareth, a rearranged and edited version of the New Testament gospels selected from printed texts in English, French, Latin, and Greek. -
The Blue Planet Report from Stellafane Perspective on Apollo How to Gain and Retain New Members
Published by the Astronomical League Vol. 71, No. 4 September 2019 THE BLUE PLANET REPORT FROM STELLAFANE 7.20.69 5 PERSPECTIVE ON APOLLO YEARS APOLLO 11 HOW TO GAIN AND RETAIN NEW MEMBERS What’s Your Pleasure? From Famous Observatories to Solar Eclipse Take Your Pick From These Tours Travel Down Under to visit top Australian Observatories observatories, including Siding October 1–9, 2019 Spring and “The Dish” at Parkes. Go wine-tasting, hike in nature reserves, and explore eclectic Syd- ney and Australia’s capital, Can- berra. Plus: Stargaze under south- ern skies. Options to Great Barrier Reef and Uluru or Ayers Rock. skyandtelescope.com/australia2019 Uluru & Sydney Opera House: Tourism Australia; observatory: Winton Gibson Astronomy Across Italy May 3–11, 2020 As you travel in comfort from Rome to Florence, Pisa, and Padua, visit the Vatican Observatory, the Galileo Museum, Arcetri Observatory, and more. Enjoy fine food, hotels, and other classic Italian treats. Extensions in Rome and Venice available. skyandtelescope.com/italy2020 S&T’s 2020 solar eclipse cruise offers 2 2020 Eclipse Cruise: Chile, Argentina, minutes, 7 seconds of totality off the and Antarctica coast of Argentina and much more: Nov. 27–Dec. 19, 2020 Chilean fjords and glaciers, the legendary Drake Passage, and four days amid Antarctica’s waters and icebergs. skyandtelescope.com/chile2020 Patagonian Total Solar Eclipse December 9–18, 2020 Come along with Sky & Telescope to view this celestial spectacle in the lakes region of southern Argentina. Experience breathtaking vistas of the lush landscape by day — and the southern sky’s incompa- rable stars by night. -
Astronomical Coordinate Systems
Appendix 1 Astronomical Coordinate Systems A basic requirement for studying the heavens is being able to determine where in the sky things are located. To specify sky positions, astronomers have developed several coordinate systems. Each sys- tem uses a coordinate grid projected on the celestial sphere, which is similar to the geographic coor- dinate system used on the surface of the Earth. The coordinate systems differ only in their choice of the fundamental plane, which divides the sky into two equal hemispheres along a great circle (the fundamental plane of the geographic system is the Earth’s equator). Each coordinate system is named for its choice of fundamental plane. The Equatorial Coordinate System The equatorial coordinate system is probably the most widely used celestial coordinate system. It is also the most closely related to the geographic coordinate system because they use the same funda- mental plane and poles. The projection of the Earth’s equator onto the celestial sphere is called the celestial equator. Similarly, projecting the geographic poles onto the celestial sphere defines the north and south celestial poles. However, there is an important difference between the equatorial and geographic coordinate sys- tems: the geographic system is fixed to the Earth and rotates as the Earth does. The Equatorial system is fixed to the stars, so it appears to rotate across the sky with the stars, but it’s really the Earth rotating under the fixed sky. The latitudinal (latitude-like) angle of the equatorial system is called declination (Dec. for short). It measures the angle of an object above or below the celestial equator. -
The Denver Observer October 2017
The Denver OCTOBER 2017 OBSERVER Composite photograph of the August 21st solar eclipse, as seen from Weiser, Idaho, with a 10” Newtonian. Image © Joe Gafford OCTOBER SKIES by Zachary Singer The Solar System will be less than ¼° degree apart. Look for Sky Calendar 5 Full Moon Keeping things simple to start, Mercury them due east, about 10° up, around 6 AM 12 Last-Quarter Moon is lost in solar glare this month. (an hour before dawn). The pair will also be th th 19 New Moon Venus is on the way to superior conjunc- quite close to each other on the 4 and 6 , 27 First-Quarter Moon tion in early January—that is, it will swing too. around to line up on the far side of the Sun, Jupiter now lies very low in the west; by from our point of view. Already, the planet midmonth, it will sink below the horizon just In the Observer is 87% illuminated and only 12° up an hour a half-hour after sunset. Superior conjunc- tion is October 26th; when the planet eventu- before dawn. It’s still very noticeable, at President’s Message . .2 magnitude -3.9, which will come in handy ally reappears from the solar glare, it will be Society Directory. 2 when you look for its tight pairing with Mars as a pre-dawn object. (see Mars, next). By Halloween, Venus is only Saturn is sinking towards the west too, Schedule of Events . 2 5° above the horizon an hour before sunrise, but at the beginning of October, it’s still 20° About Denver Astronomical Society .