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A New Quadrupolar Planetary Nebula from the IPHAS Survey
A&A 458, 203–212 (2006) Astronomy DOI: 10.1051/0004-6361:20054778 & c ESO 2006 Astrophysics The “Príncipes de Asturias” nebula: a new quadrupolar planetary nebula from the IPHAS survey A. Mampaso1,R.L.M.Corradi2,1,K.Viironen1, P. Leisy2,1,R.Greimel2,J.E.Drew3,M.J.Barlow4,D.J.Frew5, J. Irwin6, R. A. H. Morris7,Q.A.Parker5, S. Phillipps7, E. R. Rodríguez-Flores8,1, and A. A. Zijlstra9 (Affiliations can be found after the references) Received 26 December 2005 / Accepted 10 July 2006 ABSTRACT Context. The Isaac Newton Telescope Photometric Hα Survey (IPHAS) is currently mapping the Northern Galactic plane reaching to r = 20 mag with typically 1 resolution. Hundreds of Planetary Nebulae (PNe), both point-like and resolved, are expected to be discovered. We report on the discovery of the first new PN from this survey: it is an unusual object located at a large galactocentric distance and has a very low oxygen abundance. Aims. Detecting and studying new PNe will lead to improved estimates of the population size, binary fraction and lifetimes, and yield new insights into the chemistry of the interstellar medium at large galactocentric distances. Methods. Compact nebulae are searched for in the IPHAS photometric catalogue, selecting those candidates with a strong Hα excess in the r −Hα vs. r − i colour–colour diagram. Searches for extended nebulae are by visual inspection of the mosaics of continuum-subtracted Hα images at a spatial sampling of 5 × 5arcsec2. Follow-up spectroscopy enables confirmation of the PNe, and their physico-chemical study. -
Wide-Field Infrared Survey Explorer Observations of the Evolution of Massive Star-Forming Regions
The Astrophysical Journal, 744:130 (24pp), 2012 January 10 doi:10.1088/0004-637X/744/2/130 C 2012. The American Astronomical Society. All rights reserved. Printed in the U.S.A. WIDE-FIELD INFRARED SURVEY EXPLORER OBSERVATIONS OF THE EVOLUTION OF MASSIVE STAR-FORMING REGIONS X. P. Koenig1,4,D.T.Leisawitz1, D. J. Benford1, L. M. Rebull2, D. L. Padgett1, and R. J. Assef3,4 1 NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA 2 Spitzer Science Center (SSC), California Institute of Technology, M/S 220-6, 1200 East California Boulevard, Pasadena, CA 91125, USA 3 Jet Propulsion Laboratory, MS 169-530, 4800 Oak Grove Drive, Pasadena, CA 91109, USA Received 2011 July 8; accepted 2011 October 18; published 2011 December 22 ABSTRACT We present the results of a mid-infrared survey of 11 outer Galaxy massive star-forming regions and 3 open clusters with data from the Wide-field Infrared Survey Explorer (WISE). Using a newly developed photometric scheme to identify young stellar objects and exclude extragalactic contamination, we have studied the distribution of young stars within each region. These data tend to support the hypothesis that latter generations may be triggered by the interaction of winds and radiation from the first burst of massive star formation with the molecular cloud material leftover from that earlier generation of stars. We dub this process the “fireworks hypothesis” since star formation by this mechanism would proceed rapidly and resemble a burst of fireworks. We have also analyzed small cutout WISE images of the structures around the edges of these massive star-forming regions. -
Feb BACK BAY 2019
Feb BACK BAY 2019 The official newsletter of the Back Bay Amateur Astronomers CONTENTS COMING UP Gamma Burst 2 Feb 7 BBAA Meeting Eclipse Collage 3 7:30-9PM TCC, Virginia Beach NSN Article 6 Heart Nebula 7 Feb 8 Silent Sky Club meeting 10 10-11PM Little Theatre of VB Winter DSOs 11 Contact info 16 Feb 8 Cornwatch Photo by Chuck Jagow Canon 60Da, various exposures, iOptron mount with an Orion 80ED Calendar 17 dusk-dawn The best 9 out of 3465 images taken from about 10:00 PM on the 20th Cornland Park through 2:20 AM on the 21st. Unprocessed images (only cropped). Feb 14 Garden Stars 7-8:30PM LOOKING UP! a message from the president Norfolk Botanical Gardens This month’s most talked about astronomy event has to be the total lunar Feb 16 Saturday Sun-day eclipse. The BBAA participated by supporting the Watch Party at the 10AM-1PM Chesapeake Planetarium. Anyone in attendance will tell you it was COLD, but Elizabeth River Park manageable if you wore layers, utilized the planetarium where Dr. Robert Hitt seemed to have the thermostat set to 100 degrees, and drank copious amounts Feb 23 Skywatch of the hot coffee that Kent Blackwell brewed in the back office. 6PM-10PM The event had a huge following on Facebook but with the cold Northwest River Park temperatures, we weren’t sure how many would come out. By Kent’s estimate there were between 100–200 people in attendance. Many club members set up telescopes, as well as a few members of the public too. -
Ghost Hunt Challenge 2020
Virtual Ghost Hunt Challenge 10/21 /2020 (Sorry we can meet in person this year or give out awards but try doing this challenge on your own.) Participant’s Name _________________________ Categories for the competition: Manual Telescope Electronically Aided Telescope Binocular Astrophotography (best photo) (if you expect to compete in more than one category please fill-out a sheet for each) ** There are four objects on this list that may be beyond the reach of beginning astronomers or basic telescopes. Therefore, we have marked these objects with an * and provided alternate replacements for you just below the designated entry. We will use the primary objects to break a tie if that’s needed. Page 1 TAS Ghost Hunt Challenge - Page 2 Time # Designation Type Con. RA Dec. Mag. Size Common Name Observed Facing West – 7:30 8:30 p.m. 1 M17 EN Sgr 18h21’ -16˚11’ 6.0 40’x30’ Omega Nebula 2 M16 EN Ser 18h19’ -13˚47 6.0 17’ by 14’ Ghost Puppet Nebula 3 M10 GC Oph 16h58’ -04˚08’ 6.6 20’ 4 M12 GC Oph 16h48’ -01˚59’ 6.7 16’ 5 M51 Gal CVn 13h30’ 47h05’’ 8.0 13.8’x11.8’ Whirlpool Facing West - 8:30 – 9:00 p.m. 6 M101 GAL UMa 14h03’ 54˚15’ 7.9 24x22.9’ 7 NGC 6572 PN Oph 18h12’ 06˚51’ 7.3 16”x13” Emerald Eye 8 NGC 6426 GC Oph 17h46’ 03˚10’ 11.0 4.2’ 9 NGC 6633 OC Oph 18h28’ 06˚31’ 4.6 20’ Tweedledum 10 IC 4756 OC Ser 18h40’ 05˚28” 4.6 39’ Tweedledee 11 M26 OC Sct 18h46’ -09˚22’ 8.0 7.0’ 12 NGC 6712 GC Sct 18h54’ -08˚41’ 8.1 9.8’ 13 M13 GC Her 16h42’ 36˚25’ 5.8 20’ Great Hercules Cluster 14 NGC 6709 OC Aql 18h52’ 10˚21’ 6.7 14’ Flying Unicorn 15 M71 GC Sge 19h55’ 18˚50’ 8.2 7’ 16 M27 PN Vul 20h00’ 22˚43’ 7.3 8’x6’ Dumbbell Nebula 17 M56 GC Lyr 19h17’ 30˚13 8.3 9’ 18 M57 PN Lyr 18h54’ 33˚03’ 8.8 1.4’x1.1’ Ring Nebula 19 M92 GC Her 17h18’ 43˚07’ 6.44 14’ 20 M72 GC Aqr 20h54’ -12˚32’ 9.2 6’ Facing West - 9 – 10 p.m. -
Astronomy Magazine Special Issue
γ ι ζ γ δ α κ β κ ε γ β ρ ε ζ υ α φ ψ ω χ α π χ φ γ ω ο ι δ κ α ξ υ λ τ μ β α σ θ ε β σ δ γ ψ λ ω σ η ν θ Aι must-have for all stargazers η δ μ NEW EDITION! ζ λ β ε η κ NGC 6664 NGC 6539 ε τ μ NGC 6712 α υ δ ζ M26 ν NGC 6649 ψ Struve 2325 ζ ξ ATLAS χ α NGC 6604 ξ ο ν ν SCUTUM M16 of the γ SERP β NGC 6605 γ V450 ξ η υ η NGC 6645 M17 φ θ M18 ζ ρ ρ1 π Barnard 92 ο χ σ M25 M24 STARS M23 ν β κ All-in-one introduction ALL NEW MAPS WITH: to the night sky 42,000 more stars (87,000 plotted down to magnitude 8.5) AND 150+ more deep-sky objects (more than 1,200 total) The Eagle Nebula (M16) combines a dark nebula and a star cluster. In 100+ this intense region of star formation, “pillars” form at the boundaries spectacular between hot and cold gas. You’ll find this object on Map 14, a celestial portion of which lies above. photos PLUS: How to observe star clusters, nebulae, and galaxies AS2-CV0610.indd 1 6/10/10 4:17 PM NEW EDITION! AtlAs Tour the night sky of the The staff of Astronomy magazine decided to This atlas presents produce its first star atlas in 2006. -
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). -
2014 Observers Challenge List
2014 TMSP Observer's Challenge Atlas page #s # Object Object Type Common Name RA, DEC Const Mag Mag.2 Size Sep. U2000 PSA 18h31m25s 1 IC 1287 Bright Nebula Scutum 20'.0 295 67 -10°47'45" 18h31m25s SAO 161569 Double Star 5.77 9.31 12.3” -10°47'45" Near center of IC 1287 18h33m28s NGC 6649 Open Cluster 8.9m Integrated 5' -10°24'10" Can be seen in 3/4d FOV with above. Brightest star is 13.2m. Approx 50 stars visible in Binos 18h28m 2 NGC 6633 Open Cluster Ophiuchus 4.6m integrated 27' 205 65 Visible in Binos and is about the size of a full Moon, brightest star is 7.6m +06°34' 17h46m18s 2x diameter of a full Moon. Try to view this cluster with your naked eye, binos, and a small scope. 3 IC 4665 Open Cluster Ophiuchus 4.2m Integrated 60' 203 65 +05º 43' Also check out “Tweedle-dee and Tweedle-dum to the east (IC 4756 and NGC 6633) A loose open cluster with a faint concentration of stars in a rich field, contains about 15-20 stars. 19h53m27s Brightest star is 9.8m, 5 stars 9-11m, remainder about 12-13m. This is a challenge obJect to 4 Harvard 20 Open Cluster Sagitta 7.7m integrated 6' 162 64 +18°19'12" improve your observation skills. Can you locate the miniature coathanger close by at 19h 37m 27s +19d? Constellation star Corona 5 Corona Borealis 55 Trace the 7 stars making up this constellation, observe and list the colors of each star asterism Borealis 15H 32' 55” Theta Corona Borealis Double Star 4.2m 6.6m .97” 55 Theta requires about 200x +31° 21' 32” The direction our Sun travels in our galaxy. -
Cassiopeia - the Queen
May 18 2021 Cassiopeia - The Queen Observed: No Object Her Type Mag Alias/Notes NGC 7801 Non-Existent IC 11 Non-Existent NGC 358 Non-Existent NGC 629 Non-Existent IC 155 Non-Existent NGC 771 Non-Existent IC 1795 Non-Existent NGC 896 IC 1824 Non-Existent Single Star IC 1831 Non-Existent IC 1851 Non-Existent NGC 7438 Non-Existent IC 5366 Non-Existent NGC 7795 Non-Existent Sub Total: 13 Observed: Yes Object Her Type Mag Alias/Notes ABELL 82 Pl Neb 12.7 IC 1454 BERK 2 Open Cl I 1 m BERK 58 Open Cl IV 2 p 9.7 CR 15 Open Cl II 2 p 8.1 Tr 1 CR 26 Open Cl II 3 m n 6.5 Mel 15 Inside IC 1805 LBN CR 34 Open Cl I 3 p 6.8 CR 36 Open Cl III 2 m 7 Tr 3 CR 463 Open Cl III 2 m 5.7 IC 10 Glxy IBm 11.8 UGC 192 MCG 10-1-1 IRAS 177+5900 PGC 1305 IC 59 Brt Nebula E+R Sh2-185 Gamma Cassiopiae LBN 620 IC 63 Brt Nebula E+R LBN 623 Ghost Nebula IC 166 Open Cl II 1 r 11.7 IC 289 Pl Neb 4+2 12.3 Hubble 1 PK 138+2.1 PNG 138.8+2.8 IC 1590 Open Cl n 7.4 Cr 8 (Inside of NGC 281) IC 1747 Pl Neb 3b 13.6 PK 130+1.1 PNG 130.2+1.3 IC 1805 Brt Nebula E Sh2-190 LBN 654 (Cr 26 in brightest part) Heart Nebula IC 1848 Open Cl I 3 p n 6.5 Cr 32 (Inside LBN 667 Soul Nebula) IC 1871 Brt Nebula E KING 13 Open Cl II 2 m KING 14 Open Cl III 1 p 8.5 KING 16 Open Cl I 2 m 10.3 LBN 667 Brt Nebula E Soul Nebula (Surrounds IC1848) NGC 103 Open Cl II 1 m 9.8 NGC 110 Open Cl IV 1 p NGC 129 H79-8 Open Cl III 2 m 6.5 Cr 2 NGC 133 Open Cl IV 1 p 9.4 NGC 136 H35-6 Open Cl II 1 p Cr 4 Page 1 of 2 May 18 2021 Cassiopeia - The Queen Observed: Yes Object Her Type Mag Alias/Notes NGC 146 Open Cl II -
March 2021 PDF Newsletter
1 The Los Angeles Astronomical Society March, 2021 The Bulletin Volume 95, Issue 03 In This Issue NSN Webinar: James Webb Telescope…….Page 2 Seven Minutes of Terror ………………………..Page 3 Mars Perseverance Rover Watch Party…...Page 4 Taking The Dog Stars ……….………………..Pages 5-6 The Jellyfish Nebula - IC443 ……….…………..Page 7 The Soul Nebula - Sh2-199 ……………. …..….Page 8 The Heart Nebula—Sh2-190 ……....………….Page 9 Monthly Star Report ……………..…..………. Page 10 Almanac ………………………….…..…….………..Page 11 Calendar of Events ..…...……..……….….…...Page 12 Image credit: NASA/JPL-Caltech Meet the New Members .............…...……Page 13 The LAAS Outreach & Club Swag ..…...…..Page 14 February 18, 2021 Amazon Smiles & Astro Magazines ..…....Page 15 Members of NASA’s Mars 2020 Perseverance rover mission were jubi- Club Contacts & Social Media Link ……… .Page 16 lant on Feb. 18, 2021, after the spacecraft successfully touched down on Mars. They are in Mission Control at the Jet Propulsion Laboratory All members are encouraged to contribute arti- in Southern California. cles of interest for publication in The Bulletin. Please send your articles and images to: Learn more about the mission by following one of the links below: [email protected] mars.nasa.gov/mars2020/ nasa.gov/perseverance https://mars.nasa.gov/# New Contact Info For 2021? If you have recently moved, changed your Upcoming Virtual Club Events email address or phone number, please contact our club secretary at Board Meeting; Mar. 3, 2021 [email protected]. General Meeting; Mar. 8, 2021 2 NSN Webinar Series: What to Expect from the James Webb Space Telescope Join the NASA Night Sky Network on Tuesday, March 23 at 6pm Pacific (9pm Eastern) to hear Dr. -
Arxiv:Astro-Ph/9906240V1 14 Jun 1999 Nteeouinr Ttso Estars Be Fabregat Juan of Status Evolutionary the on Orsodneto De- Correspondence to Is Issue Main the Question
A&A manuscript no. ASTRONOMY (will be inserted by hand later) AND Your thesaurus codes are: 05 (08.05.2; 08.05.3; 10.15.1) ASTROPHYSICS On the evolutionary status of Be stars Juan Fabregat1 and J. Miguel Torrej´on2 1 Departamento de Astronom´ıa, Universidad de Valencia, 46100 Burjassot, Valencia, Spain 2 Departamento de F´ısica, Ingenier´ıa de Sistemas y Teor´ıa de la Se˜nal, Universidad de Alicante, Spain Received date; accepted date Abstract. We present a study of the abundance of Be termine whether the Be phenomenon appears at a given stars in open clusters as a function of the cluster age, us- stage in the evolutionary track of every B star, or it orig- ing whenever possible ages determined through Str¨omgren inates in the conditions of formation of some stars, which uvby photometry. For the first time in studies of this kind include fast rotation and probably other facts. A funda- we have considered separately classical and Herbig Be mental element in this discussion is the study of Be stars stars. in open clusters, in two different ways: i./ the determina- The main results can be summarized as follows: tion of the Be star positions in the cluster photometric diagrams; and, ii./ the study of the abundance of Be stars – Clusters associated to emitting nebulosities and un- as a function of the cluster age. dergoing stellar formation are rich in emission line ob- It is well known that Be stars usually occupy anoma- jects, which most likely are all pre main-sequence stars. -
SAC's 110 Best of the NGC
SAC's 110 Best of the NGC by Paul Dickson Version: 1.4 | March 26, 1997 Copyright °c 1996, by Paul Dickson. All rights reserved If you purchased this book from Paul Dickson directly, please ignore this form. I already have most of this information. Why Should You Register This Book? Please register your copy of this book. I have done two book, SAC's 110 Best of the NGC and the Messier Logbook. In the works for late 1997 is a four volume set for the Herschel 400. q I am a beginner and I bought this book to get start with deep-sky observing. q I am an intermediate observer. I bought this book to observe these objects again. q I am an advance observer. I bought this book to add to my collect and/or re-observe these objects again. The book I'm registering is: q SAC's 110 Best of the NGC q Messier Logbook q I would like to purchase a copy of Herschel 400 book when it becomes available. Club Name: __________________________________________ Your Name: __________________________________________ Address: ____________________________________________ City: __________________ State: ____ Zip Code: _________ Mail this to: or E-mail it to: Paul Dickson 7714 N 36th Ave [email protected] Phoenix, AZ 85051-6401 After Observing the Messier Catalog, Try this Observing List: SAC's 110 Best of the NGC [email protected] http://www.seds.org/pub/info/newsletters/sacnews/html/sac.110.best.ngc.html SAC's 110 Best of the NGC is an observing list of some of the best objects after those in the Messier Catalog. -
Distant Arm - NGC772
29 September 2016, Zeiss Cas 150/2250 Distant Arm - NGC772 Telescope: Zeiss Cassegrain 150/2250 Eyepieces: ATC53P - ATC Plossl, f=53mm, (42×, 530) ATC20K - ATC Kellner, f=20mm, (113×, 220) A-16 - Zeiss Abbe Ortho, f=16mm, (141×, 200) O-12.5 - CZJ Ortho, f=12.5mm, (180×, 140) Time: 2016/09/29 19:30-21:40UT Location: R´ıˇcanyˇ Weather: Clear sky with slight haze and decaying small thin clouds. Mount: Zeiss 1b Accessories: Baader/Zeiss T2 prism This was my typical backyard session. I could go out only for a short time after I put all three kids in to their beds. The night was still warm. Normally, I would try to take an advantage of it and go to some darker place. As I was alone with the kids for the whole week I was bound to stay in our backyard. During last couple of years, I have learnt to live with this handicap. There is always something interesting to look at, even with small refractors. Recently, I was explor- ing the capability of my largest telescope, 150mm Cassegrain. For this night, the main targets were two galaxies, NGC 660 and NGC 772, which I had troubles to locate two days before in 80mm refractor. I was curios how much of help the larger telescope would be. I did not jump to these two galaxies im- mediately. They were still low in the slight haze enhanced by the street lamps. I started a little bit higher in Andromeda with beau- tiful edge-on galaxy NGC 891 (V=10.0, 13:50 ×2:50, PA22◦).