DOCSLIB.ORG

Constellations of the Month Cepheus Naked Eye Objects

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

Constellations of the Month Cepheus Naked Eye Objects: Name R.A. Decl. Details δ Cepheus . Variable star, period of 5.366 days. Varies from magnitude 3.5 to 4.4 The “Garnet star” Long term irregular variable red giant. Varies from magnitude 3.6 to Cepheus . µ 5.1 over a rough period of 755 days. (May also vary in colour.) Small Scope Objects: Name R.A. Decl. Details Open cluster of 60 stars magnitude 9.7 and fainter. Total integrated magnitude 7.9 NGC 7510 23hr 11.5m +60° 34’ with a diameter of 4 arc minutes. Bright planetary nebula, 37 arc seconds in size. Magnitude 10.7, with a mag. 11.6 NGC 40! 00hr 13.0m +72° 32’ central star. (110NGC) Open cluster of 40 stars magnitude 11 and fainter. Total magnitude 10 with a diameter NGC 7762 23hr 50m +68° 02’ of 11 arc minutes. Rich open cluster of 80 stars, magnitude 12 and fainter. Magnitude 7.8 with a diameter NGC 6939! 20hr 31.4m +60° 38’ of 8 arc minutes. (110NGC) Look for galaxy NGC 6946 in the same field. Big Scope Objects: Name R.A. Decl. Details This face-on spiral, near NGC 6939 lies at a distance of 5 Megaparsecs. Measuring NGC 6946! 20hr 34.8m +60° 09’ 11x9.8 arc minutes has an integrated magnitude of 8.9 (110NGC) This faint, featureless reflection nebula measures 18 arc minutes in size and requires NGC 7023 21hr 02m +68° 12’ good dark skies. Only 4° from Polaris, this faint open cluster is one of the oldest known at 5 billion NGC 188 00hr 44m +85° 20’ years. A difficult cluster to resolve, most of the 120 stars fall between mag 12 and 18. This small emission nebula measures 70 x 45 arc seconds, with a 12th magnitude star IC 1470 23hr 05m +60° 15’ embedded near the center. NGC 7129! 21hr 42.8m +66° 06’ Faint reflection nebula around sparse cluster. 7 x 7 arc minutes. Challenge Objects: Name R.A. Decl. Details This emission nebula covers almost six square degrees of sky. On good dark nights IC 1396 21hr 39m +57° 30’ appears as a brightening in the milky way. Use lowest magnification or finder with a nebula filter. NGC 2276 +85° 52’ A small Sc spiral. Magnitude 12.4, measuring 2.5 x 2 arc minutes. Look for NGC 2300 07hr 11m (ARP 114) (1950) in same field. NGC 2300 +85° 59’ 07hr 16m A small E2 elliptical galaxy. Mag 12.2, measuring 1.0 x 0.7 arc minutes. (ARP 25) (1950) 2 h Starry Night 50 l a FOV: 36.28 i NGC 7789 t s e l e C HD003712 Schedar PacMan Nebula Cr8 Cep Caph Cas Tr37 Elephant Trunk Bubble Nebula The Scorpion (M52) Cr2 NGC 129 NGC457 h Owl Cluster (NGC 457) Owl Cluster 2 Cr1 0 Cr4 Cr462 h HD005394 NGC 225 Cr7 NGC 7160 HD002905 Ruchbah NGC7160 Cr3 CassiopeiaCr10 Cr9 M103 Alderamin NGC 663 NGC 654 NGC654 NGC 6946 St2 NGC 6939 Cep Segin HD011415 St5 Mel15 Alfirk HD205021 CepheusCr471 NGC 40 Cr463 NGC 771 HD012216 Er Rai Altais 4h HD192907 8h ° 0 6 HD170000 Cat Eye Nebula Draco NGC 6503 HD008890 Cr464 Nodus I HD155763 7 ° 0 0 ° 8 6h Viewing from Prince George, Canada Long: -122° 43' 42" Lat: 53° 55' 09" Cl Chart centre (J2000): RA: 22h 18.778m Dec: 74° 9.367' 2010/10/31 9:24:03 PM (Local) Altitude: 69° 23.478', Azimuth: 353° 8.101' (north) Limiting Magnitude: 7.0 Constellations of the Month Lacerta Small Scope Objects: Name R.A. Decl. Details A bright open cluster visible in binoculars. 25 stars cover 25 arc minutes of sky for a NGC 7209 22hr 05m +46° 30’ total magnitude of 6.7. Slightly smaller than NGC 7209, NGC 7243 packs 40 stars into 21 arc minutes and NGC 7243 22hr 15m +49° 53’ shines a bit brighter at magnitude 6.4. Big Scope Objects: Name R.A. Decl. Details A rich but compact open cluster of 50 faint stars. Only 5 arc minutes in size, magni- NGC 7245 22hr 15m +54° 20’ tude 9.2. Look for cluster King 9, 10 arc minutes NE. An open cluster near NGC 7245, appearing as a miniature double cluster in large IC 1442 22hr 17m +54° 03’ scopes. 20 faint stars covering about 5 arc minutes of sky, mag. 9.1. NGC 7296 A loose, faint open cluster, 20 arc minutes in size. 20 stars involved for a total magni- 22hr 28m +52° 17’ (Collinder 452) tude of 9.7. A bright but small planetary nebula, only 6 arc seconds in size. Bluish in colour, easy IC 5217 22hr 24m +50° 58’ to miss at low power. Mag. 12.6. IC 1434 A faint but rich open cluster of 40 stars covering 8 arc minutes of sky. Magnitude 9.0, 22hr 11m +52° 50’ (Collinder 445) look for a string of 20 stars along the north edge. NGC 7223 22hr 10m +41° 00’ An Sc spiral galaxy, 2.0 x 1.3 arc minutes in size. Mag 13.5. Brightest in a group of faint galaxies including NGC 7263, 7264, 7273, 7274 and 7276. NGC 7265 Group 22hr 22m +36° 14’ Magnitude 13.7, 2.4 x 1.9 arc minutes in size. Challenge Objects: Name R.A. Decl. Details Abell 79 A faint planetary nebula that demands an OIII filter. Magnitude 15.0, 59 x 49 arc 22hr 03m +42° 16’ (PK102-2.1) seconds in size. M2-53 Brighter and smaller than Abel 79. Magnitude 14.8, but more compact at 14 arc second 22hr 32m +56° 10’ (PK104-1.1) diameter. Starry Night e 3 3 M h 2 NGC 7380 NGC7380 h 2 FOV: 22.48 l 3 2 tia 2 2 es NGC7160 m el 0 C 3 h 1 2 NGC 7686 Cep NGC7686 Cr450 And Cep And HD222439 Cep Cr447 Erakis 60° Cr446 Cr439 Elephant Trunk Tr37 Blue Snowball (NGC 7662) Lac HD213558 NGC 7243 NGC7243 And HD217675 h 1 2 Lacerta HD206672 HD212120 2 Cyg HD207330 HD213420 NGC7209 Cr470 Cocoon Nebula M39 M39 NGC 7082 50° NGC7082 Cr432 Cyg Cr434 NGC6991 NGC 7039 Cr431 NGC 7331 1 Lac Cr425 North America Nebula (NGC 7000) North America Nebula HD197345 HD199081 HD215182 Matar 3 4 0° 0° NGC 7027 Viewing from Prince George, Canada Long: -122° 43' 42" Lat: 53° 55' 09" Chart centre (J2000): RA: 22h 26.351m Dec: 46° 19.142' 2010/10/31 9:38:08 PM (Local) Altitude: 79° 55.584', Azimuth: 225° 46.413' (south west) Limiting Magnitude: 8.1 Constellations of the Month Perseus Small Scope Objects: Name R.A. Decl. Details The “Demon Star” - an eclipsing variable star. Drops from mag. 2.1 to 3.4 for 10 Persei (Algol) 03hr 08m +40° 57’ β hours, every 2.86739 days. M34 02hr A bright, rich open cluster, easily visible in binoculars. 80 stars, mag 7 and fainter, 20 +42° 47’ (NGC 1039) 42.0m arc minutes in size. Integrated magnitude is 5.5. The “Double Cluster” - two naked eye clusters, separated by about 1/2°. Both clusters NGC 869!! and 02hr +57° 08’ contain about 300 stars each, mag. 7 and fainter. Cluster sizes are both 35 arc min- NGC 884! 21.0m utes. NGC 869 is mag 4.4, NGC 884 is mag 4.7. (110NGC) Another bright open cluster, 25 arc minutes in size. 80 stars, mag. 8 and fainter. Easy NGC 1528 04hr 15m +51° 15’ in binoculars, total magnitude of 6.0. Big Scope Objects: Name R.A. Decl. Details Located less than 2° away from The Double Cluster, but smaller and fainter. 40 stars, NGC 957 02hr 33m +57° 31’ mag 11 to 15, 10 arc minutes in size. Total magnitude 7.2. Another nice open cluster of 40 stars, mag 11 and fainter. 20 arc minutes in diameter. NGC 1245 03hr 15m +47° 14’ Total magnitude 6.9. 04hr NGC 1491! +51° 19’ A compact but bright emission nebula, 3x3 arc minutes. (110NGC) 03.4m The “Little Dumbbell Nebula” - an 11th magnitude planetary nebula, a smaller ver- M76 01hr +51° 34’ sion of The “Dumbbell Nebula” in Vulpecula. One of the toughest Messier objects (?) (NGC 650/51) 42.4m 140 x 70 arc seconds in size with a mag 16.5 central star. 02hr An E7 elliptical galaxy, 4.5 x 1.3 arc minutes. Magnitude 11.0 with high surface NGC 1023! +39° 04’ 40.4m brightness. (110NGC) “Perseus A” - a 13th mag peculiar galaxy. Difficult to observe with smaller scopes, 0.7 NGC 1275 03hr 20m +41° 31’ x 0.6 arc minutes in size, 8” scope probably minimum aperature. Challenge Objects: Name R.A. Decl. Details The “California Nebula” - a large, faint emission nebula, 145 x 40 arc minutes in size. NGC 1499 04hr 04m +36° 25’ Best observed from dark skies at very low power (8 to 16X) Somewhat less invisible with an H-beta, OIII or UHC filter. 3 3 hStarry Night h 2h 7 2h 1h 1h 3 30 30m FOV:0m 42.37 m HD011415 Cr20 Mirach Little Dumbbell Nebula (M76) h 3 0 m St2 IC 1805 Perseus Double Cluster (NGC 869) Perseus Double Cluster (NGC 884) NGC869 h Cr32 Cr28 IC 1848 Cr36 Cr29 Cr34 Triangulum Galaxy, Pinwheel Galaxy (M33) Triangulum Pinwheel Almach NGC752 NGC 752 h NGC 891 3 Per 0 m NGC1502 ° 0 M34 Triangulum 2 NGC 1023 HD020902 Sheratan Mel20 Hamal NGC 772 Algol h NGC 1491 NGC 1528 Perseus NGC 1545 HD017573 Aries Per HD024760 California Nebula Capella Almaaz Atik HD024398 3 0 ° m 0 HD032630 1 NGC 1514 HD023302 HD040183 Cr62 Pleiades, Seven Sisters (M45) HD023850 M45 Cz20 4 h Hassaleh Viewing from Prince George,Auriga Canada Long: -122° 43' 42" Lat: 53° 55' 09" Chart centre (J2000): RA: 3h 16.666m Dec: 43° 16.449' 2010/10/31 9:40:05 PM (Local) Altitude: 49° 15.273', Azimuth: 78° 56.679' (east) Limiting Magnitude: 6.7 Constellations of the Month Pisces Small Scope Objects: Name R.A.
Recommended publications
  • Eclipse Newsletter

    Eclipse Newsletter

    ECLIPSE NEWSLETTER The Eclipse Newsletter is dedicated to increasing the knowledge of Astronomy, Astrophysics, Cosmology and related subjects. VOLUMN 2 NUMBER 1 JANUARY – FEBRUARY 2018 PLEASE SEND ALL PHOTOS, QUESTIONS AND REQUST FOR ARTICLES TO [email protected] 1 MCAO PUBLIC NIGHTS AND FAMILY NIGHTS. The general public and MCAO members are invited to visit the Observatory on select Monday evenings at 8PM for Public Night programs. These programs include discussions and illustrated talks on astronomy, planetarium programs and offer the opportunity to view the planets, moon and other objects through the telescope, weather permitting. Due to limited parking and seating at the observatory, admission is by reservation only. Public Night attendance is limited to adults and students 5th grade and above. If you are interested in making reservations for a public night, you can contact us by calling 302-654- 6407 between the hours of 9 am and 1 pm Monday through Friday. Or you can email us any time at [email protected] or [email protected]. The public nights will be presented even if the weather does not permit observation through the telescope. The admission fees are $3 for adults and $2 for children. There is no admission cost for MCAO members, but reservations are still required. If you are interested in becoming a MCAO member, please see the link for membership. We also offer family memberships. Family Nights are scheduled from late spring to early fall on Friday nights at 8:30PM. These programs are opportunities for families with younger children to see and learn about astronomy by looking at and enjoying the sky and its wonders.
  • MESSIER 13 RA(2000) : 16H 41M 42S DEC(2000): +36° 27'

    MESSIER 13 RA(2000) : 16H 41M 42S DEC(2000): +36° 27'

    MESSIER 13 RA(2000) : 16h 41m 42s DEC(2000): +36° 27’ 41” BASIC INFORMATION OBJECT TYPE: Globular Cluster CONSTELLATION: Hercules BEST VIEW: Late July DISCOVERY: Edmond Halley, 1714 DISTANCE: 25,100 ly DIAMETER: 145 ly APPARENT MAGNITUDE: +5.8 APPARENT DIMENSIONS: 20’ Starry Night FOV: 1.00 Lyra FOV: 60.00 Libra MESSIER 6 (Butterfly Cluster) RA(2000) : 17Ophiuchus h 40m 20s DEC(2000): -32° 15’ 12” M6 Sagitta Serpens Cauda Vulpecula Scutum Scorpius Aquila M6 FOV: 5.00 Telrad Delphinus Norma Sagittarius Corona Australis Ara Equuleus M6 Triangulum Australe BASIC INFORMATION OBJECT TYPE: Open Cluster Telescopium CONSTELLATION: Scorpius Capricornus BEST VIEW: August DISCOVERY: Giovanni Batista Hodierna, c. 1654 DISTANCE: 1600 ly MicroscopiumDIAMETER: 12 – 25 ly Pavo APPARENT MAGNITUDE: +4.2 APPARENT DIMENSIONS: 25’ – 54’ AGE: 50 – 100 million years Telrad Indus MESSIER 7 (Ptolemy’s Cluster) RA(2000) : 17h 53m 51s DEC(2000): -34° 47’ 36” BASIC INFORMATION OBJECT TYPE: Open Cluster CONSTELLATION: Scorpius BEST VIEW: August DISCOVERY: Claudius Ptolemy, 130 A.D. DISTANCE: 900 – 1000 ly DIAMETER: 20 – 25 ly APPARENT MAGNITUDE: +3.3 APPARENT DIMENSIONS: 80’ AGE: ~220 million years FOV:Starry 1.00Night FOV: 60.00 Hercules Libra MESSIER 8 (THE LAGOON NEBULA) RA(2000) : 18h 03m 37s DEC(2000): -24° 23’ 12” Lyra M8 Ophiuchus Serpens Cauda Cygnus Scorpius Sagitta M8 FOV: 5.00 Scutum Telrad Vulpecula Aquila Ara Corona Australis Sagittarius Delphinus M8 BASIC INFORMATION Telescopium OBJECT TYPE: Star Forming Region CONSTELLATION: Sagittarius Equuleus BEST
  • The Denver Observer December 2017

    The Denver Observer December 2017

    The Denver DECEMBER 2017 OBSERVER Messier 76, the Little Dumbbell Nebula, one of the deep-sky objects featured in this month’s “Skies.” Image © Joe Gafford. DECEMBER SKIES by Zachary Singer The Solar System of view in your ’scope will include the Moon’s Sky Calendar 3 Full Moon December will be a decent month for eastern section and the star, with plenty of 10 Last-Quarter Moon planetary events; though some planets are room. 17 New Moon slipping from view, others will take their I recommend you observe early—it 26 First-Quarter Moon place. We also have an occultation of Alde- should be a beautiful view, with the star a baran; as seen from Denver, the Moon will bright spark near the Moon’s edge, and over pass in front of the star at approximately the following minutes (they’ll go fast, just like In the Observer 4:06 PM, on the 30th. At that point, with the recent solar eclipse did), you can see the Moon move in its orbit around us, using the sunset still more than half an hour away, the President’s Message . .2 star won’t be visible to the naked eye, but it star for a benchmark. (Before 4:00 PM, look Society Directory. 2 should be in a telescope if you know where for Aldebaran outside the square, but along to look: Imagine a square drawn just large the diagonal from the Moon’s center to that Schedule of Events . 2 enough to touch the edges of the Moon, and lower-left edge.) About Denver Astronomical Society .
  • A Dissertation Entitled Star Cluster Populations in the Spiral Galaxy

    A Dissertation Entitled Star Cluster Populations in the Spiral Galaxy

    A Dissertation entitled Star Cluster Populations in the Spiral Galaxy M101 by Lesley A. Simanton Submitted to the Graduate Faculty as partial fulfillment of the requirements for the Doctor of Philosophy Degree in Physics Dr. Rupali Chandar, Committee Chair Dr. John-David Smith, Committee Member Dr. Steven Federman, Committee Member Dr. Bo Gao, Committee Member Dr. Bradley Whitmore, Committee Member Dr. Patricia R. Komuniecki, Dean College of Graduate Studies The University of Toledo August 2015 Copyright 2015, Lesley A. Simanton This document is copyrighted material. Under copyright law, no parts of this document may be reproduced without the expressed permission of the author. An Abstract of Star Cluster Populations in the Spiral Galaxy M101 by Lesley A. Simanton Submitted to the Graduate Faculty as partial fulfillment of the requirements for the Doctor of Philosophy Degree in Physics The University of Toledo August 2015 Most stars form in groups and clusters. Stars clusters range in age from very young (< 3 Myr, embedded in gas clouds) to some of the most ancient objects in the universe (> 13 Gyr), providing clues to the formation and evolution of their host galaxies. Our knowledge of the diversity of star cluster populations has expanded over the last few decades, especially by being able to examine star clusters outside of the Milky Way (MW). In this dissertation, we continue this expansion of extragalactic star cluster studies by examining the star cluster system of the nearby spiral galaxy M101. We utilize photometry from Hubble Space T elescope images to assess luminosity, color, size, and spatial distributions of old star clusters, and spectroscopy from the Gemini- North telescope to determine ages, metallicities, and velocities of a subset of both young and old clusters in M101.
  • Messier Plus Marathon Text

    Messier Plus Marathon Text

    Messier Plus Marathon Object List by Wally Brown & Bob Buckner with additional objects by Mike Roos Object Data - Saguaro Astronomy Club Score is most numbered objects in a single night. Tiebreaker is count of un-numbered objects Observer Name Date Address Marathon Obects __________ Tiebreaker Objects ________ SEQ OBJECT TYPE CON R.A. DEC. RISE TRANSIT SET MAG SIZE NOTES TIME M 53 GLOCL COM 1312.9 +1810 7:21 14:17 21:12 7.7 13.0' NGC 5024, !B,vC,iR,vvmbM,st 12.. NGC 5272, !!,eB,vL,vsmbM,st 11.., Lord Rosse-sev dark 1 M 3 GLOCL CVN 1342.2 +2822 7:11 14:46 22:20 6.3 18.0' marks within 5' of center 2 M 5 GLOCL SER 1518.5 +0205 10:17 16:22 22:27 5.7 23.0' NGC 5904, !!,vB,L,eCM,eRi, st mags 11...;superb cluster M 94 GALXY CVN 1250.9 +4107 5:12 13:55 22:37 8.1 14.4'x12.1' NGC 4736, vB,L,iR,vsvmbM,BN,r NGC 6121, Cl,8 or 10 B* in line,rrr, Look for central bar M 4 GLOCL SCO 1623.6 -2631 12:56 17:27 21:58 5.4 36.0' structure M 80 GLOCL SCO 1617.0 -2258 12:36 17:21 22:06 7.3 10.0' NGC 6093, st 14..., Extremely rich and compressed M 62 GLOCL OPH 1701.2 -3006 13:49 18:05 22:21 6.4 15.0' NGC 6266, vB,L,gmbM,rrr, Asymmetrical M 19 GLOCL OPH 1702.6 -2615 13:34 18:06 22:38 6.8 17.0' NGC 6273, vB,L,R,vCM,rrr, One of the most oblate GC 3 M 107 GLOCL OPH 1632.5 -1303 12:17 17:36 22:55 7.8 13.0' NGC 6171, L,vRi,vmC,R,rrr, H VI 40 M 106 GALXY CVN 1218.9 +4718 3:46 13:23 22:59 8.3 18.6'x7.2' NGC 4258, !,vB,vL,vmE0,sbMBN, H V 43 M 63 GALXY CVN 1315.8 +4201 5:31 14:19 23:08 8.5 12.6'x7.2' NGC 5055, BN, vsvB stell.
  • Binocular Universe: You're My Hero! December 2010

    Binocular Universe: You're My Hero! December 2010

    Binocular Universe: You're My Hero! December 2010 Phil Harrington on't you just love a happy ending? I know I do. Picture this. Princess Andromeda, a helpless damsel in distress, chained to a rock as a ferocious D sea monster loomed nearby. Just when all appeared lost, our hero -- Perseus! -- plunges out of the sky, kills the monster, and sweeps up our maiden in his arms. Together, they fly off into the sunset on his winged horse to live happily ever after. Such is the stuff of myths and legends. That story, the legend of Perseus and Andromeda, was recounted in last month's column when we visited some binocular targets within the constellation Cassiopeia. In mythology, Queen Cassiopeia was Andromeda's mother, and the cause for her peril in the first place. Left: Autumn star map from Star Watch by Phil Harrington Above: Finder chart for this month's Binocular Universe. Chart adapted from Touring the Universe through Binoculars Atlas (TUBA), www.philharrington.net/tuba.htm This month, we return to the scene of the rescue, to our hero, Perseus. He stands in our sky to the east of Cassiopeia and Andromeda, should the Queen's bragging get her daughter into hot water again. The constellation's brightest star, Mirfak (Alpha [α] Persei), lies about two-thirds of the way along a line that stretches from Pegasus to the bright star Capella in Auriga. Shining at magnitude +1.8, Mirfak is classified as a class F5 white supergiant. It radiates some 5,000 times the energy of our Sun and has a diameter 62 times larger.
  • August 13 2016 7:00Pm at the Herrett Center for Arts & Science College of Southern Idaho

    August 13 2016 7:00Pm at the Herrett Center for Arts & Science College of Southern Idaho

    Snake River Skies The Newsletter of the Magic Valley Astronomical Society www.mvastro.org Membership Meeting President’s Message Saturday, August 13th 2016 7:00pm at the Herrett Center for Arts & Science College of Southern Idaho. Public Star Party Follows at the Colleagues, Centennial Observatory Club Officers It's that time of year: The City of Rocks Star Party. Set for Friday, Aug. 5th, and Saturday, Aug. 6th, the event is the gem of the MVAS year. As we've done every Robert Mayer, President year, we will hold solar viewing at the Smoky Mountain Campground, followed by a [email protected] potluck there at the campground. Again, MVAS will provide the main course and 208-312-1203 beverages. Paul McClain, Vice President After the potluck, the party moves over to the corral by the bunkhouse over at [email protected] Castle Rocks, with deep sky viewing beginning sometime after 9 p.m. This is a chance to dig into some of the darkest skies in the west. Gary Leavitt, Secretary [email protected] Some members have already reserved campsites, but for those who are thinking of 208-731-7476 dropping by at the last minute, we have room for you at the bunkhouse, and would love to have to come by. Jim Tubbs, Treasurer / ALCOR [email protected] The following Saturday will be the regular MVAS meeting. Please check E-mail or 208-404-2999 Facebook for updates on our guest speaker that day. David Olsen, Newsletter Editor Until then, clear views, [email protected] Robert Mayer Rick Widmer, Webmaster [email protected] Magic Valley Astronomical Society is a member of the Astronomical League M-51 imaged by Rick Widmer & Ken Thomason Herrett Telescope Shotwell Camera https://herrett.csi.edu/astronomy/observatory/City_of_Rocks_Star_Party_2016.asp Calendars for August Sun Mon Tue Wed Thu Fri Sat 1 2 3 4 5 6 New Moon City Rocks City Rocks Lunation 1158 Castle Rocks Castle Rocks Star Party Star Party Almo, ID Almo, ID 7 8 9 10 11 12 13 MVAS General Mtg.
  • Wynyard Planetarium & Observatory a Autumn Observing Notes

    Wynyard Planetarium & Observatory a Autumn Observing Notes

    Wynyard Planetarium & Observatory A Autumn Observing Notes Wynyard Planetarium & Observatory PUBLIC OBSERVING – Autumn Tour of the Sky with the Naked Eye CASSIOPEIA Look for the ‘W’ 4 shape 3 Polaris URSA MINOR Notice how the constellations swing around Polaris during the night Pherkad Kochab Is Kochab orange compared 2 to Polaris? Pointers Is Dubhe Dubhe yellowish compared to Merak? 1 Merak THE PLOUGH Figure 1: Sketch of the northern sky in autumn. © Rob Peeling, CaDAS, 2007 version 1.2 Wynyard Planetarium & Observatory PUBLIC OBSERVING – Autumn North 1. On leaving the planetarium, turn around and look northwards over the roof of the building. Close to the horizon is a group of stars like the outline of a saucepan with the handle stretching to your left. This is the Plough (also called the Big Dipper) and is part of the constellation Ursa Major, the Great Bear. The two right-hand stars are called the Pointers. Can you tell that the higher of the two, Dubhe is slightly yellowish compared to the lower, Merak? Check with binoculars. Not all stars are white. The colour shows that Dubhe is cooler than Merak in the same way that red-hot is cooler than white- hot. 2. Use the Pointers to guide you upwards to the next bright star. This is Polaris, the Pole (or North) Star. Note that it is not the brightest star in the sky, a common misconception. Below and to the left are two prominent but fainter stars. These are Kochab and Pherkad, the Guardians of the Pole. Look carefully and you will notice that Kochab is slightly orange when compared to Polaris.
  • Scutum Apus Aquarius Aquila Ara Bootes Canes Venatici Capricornus Centaurus Cepheus Circinus Coma Berenices Corona Austrina Coro

    Scutum Apus Aquarius Aquila Ara Bootes Canes Venatici Capricornus Centaurus Cepheus Circinus Coma Berenices Corona Austrina Coro

    Polaris Ursa Minor Cepheus Camelopardus Thuban Draco Cassiopeia Mizar Ursa Major Lacerta Lynx Deneb Capella Perseus Auriga Canes Venatici Algol Cygnus Vega Cor Caroli Andromeda Lyra Bootes Leo Minor Castor Triangulum Corona Borealis Albireo Hercules Pollux Alphecca Gemini Vulpecula Coma Berenices Pleiades Aries Pegasus Sagitta Arcturus Taurus Cancer Aldebaran Denebola Leo Delphinus Serpens [Caput] Regulus Equuleus Altair Canis Minor Pisces Betelgeuse Aquila Procyon Orion Serpens [Cauda] Ophiuchus Virgo Sextans Monoceros Mira Scutum Rigel Aquarius Spica Cetus Libra Crater Capricornus Hydra Sirius Corvus Lepus Deneb Kaitos Canis Major Eridanus Antares Fomalhaut Piscis Austrinus Sagittarius Scorpius Antlia Pyxis Fornax Sculptor Microscopium Columba Caelum Corona Austrina Lupus Puppis Grus Centaurus Vela Norma Horologium Phoenix Telescopium Ara Canopus Indus Crux Pictor Achernar Hadar Carina Dorado Tucana Circinus Rigel Kentaurus Reticulum Pavo Triangulum Australe Musca Volans Hydrus Mensa Apus SampleOctans file Chamaeleon AND THE LONELY WAR Sample file STAR POWER VOLUME FOUR: STAR POWER and the LONELY WAR Copyright © 2018 Michael Terracciano and Garth Graham. All rights reserved. Star Power, the Star Power logo, and all characters, likenesses, and situations herein are trademarks of Michael Terracciano and Garth Graham. Except for review purposes, no portion of this publication may be reproduced or transmitted, in any form or by any means, without the express written consent of the copyright holders. All characters and events in this publication are fictional and any resemblance to real people or events is purely coincidental. Star chartsSample adapted from charts found at hoshifuru.jp file Portions of this book are published online at www.starpowercomic.com. This volume collects STAR POWER and the LONELY WAR Issues #16-20 published online between Oct 2016 and Oct 2017.
  • Proper Motion Surveys of the Young Open Clusters Alpha Persei and the Pleiades

    Proper Motion Surveys of the Young Open Clusters Alpha Persei and the Pleiades

    A&A 416, 125–136 (2004) Astronomy DOI: 10.1051/0004-6361:20034238 & c ESO 2004 Astrophysics Proper motion surveys of the young open clusters Alpha Persei and the Pleiades N. R. Deacon and N. C. Hambly Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK Received 28 August 2003 / Accepted 28 October 2003 Abstract. In this paper we present surveys of two open clusters using photometry and accurate astrometry from the SuperCOSMOS microdensitometer. These use plates taken by the Palomar Oschin Schmidt Telescope giving a wide field (5◦ from the cluster centre in both cases), accurate positions and a long time baseline for the proper motions. Distribution functions are fitted to proper motion vector point diagrams yielding formal membership probabilities. Luminosity and mass functions are then produced along with a catalogue of high probability members. Background star contamination limited the depth of the study of Alpha Per to R = 18. Due to this the mass function found for this cluster could only be fitted with a power ξ = −α α = . +0.14 law ( (m) m ) with 0 86−0.19. However with the better seperation of the Pleiades’ cluster proper motion from the field population results were obtained down to R = 21. As the mass function produced for this cluster extends to lower masses it is possible to see the gradient becoming increasingly shallow. This mass function is well fitted by a log normal distribution. Key words. astrometry – stars: low mass, brown dwarfs – Galaxy: open clusters and associations: individual: Alpha Per, Pleiades 1. Introduction Most recently Barrado y Navascu´es et al.
  • The Planets for 1955 24 Eclipses, 1955 ------29 the Sky and Astronomical Phenomena Month by Month - - 30 Phenomena of Jupiter’S S a Te Llite S

    The Planets for 1955 24 Eclipses, 1955 ------29 the Sky and Astronomical Phenomena Month by Month - - 30 Phenomena of Jupiter’S S a Te Llite S

    THE OBSERVER’S HANDBOOK FOR 1955 PUBLISHED BY The Royal Astronomical Society of Canada C. A. C H A N T, E d ito r RUTH J. NORTHCOTT, A s s is t a n t E d ito r DAVID DUNLAP OBSERVATORY FORTY-SEVENTH YEAR OF PUBLICATION P r i c e 50 C e n t s TORONTO 13 Ross S t r e e t Printed for th e Society By the University of Toronto Press THE ROYAL ASTRONOMICAL SOCIETY OF CANADA The Society was incorporated in 1890 as The Astronomical and Physical Society of Toronto, assuming its present name in 1903. For many years the Toronto organization existed alone, but now the Society is national in extent, having active Centres in Montreal and Quebec, P.Q.; Ottawa, Toronto, Hamilton, London, and Windsor, Ontario; Winnipeg, Man.; Saskatoon, Sask.; Edmonton, Alta.; Vancouver and Victoria, B.C. As well as nearly 1000 members of these Canadian Centres, there are nearly 400 members not attached to any Centre, mostly resident in other nations, while some 200 additional institutions or persons are on the regular mailing list of our publications. The Society publishes a bi-monthly J o u r n a l and a yearly O b s e r v e r ’s H a n d b o o k . Single copies of the J o u r n a l are 50 cents, and of the H a n d b o o k , 50 cents. Membership is open to anyone interested in astronomy. Annual dues, $3.00; life membership, $40.00.
  • Keck Spectra of Brown Dwarf Candidates and a Precise

    Keck Spectra of Brown Dwarf Candidates and a Precise

    TABLE 1 Summary of Optical Imaging for Alpha Persei Telescope Area Covered Limiting Magnitude (sq.degrees) (R/I) CWRU Schmidt 3.2 21.5/20.5 MHO 1.2m 1.1 22.0/20.7 KPNO 0.9m 0.5 21.5/20.5 KPNO 4.0m 1.3 22.4/21.0 KPNO 4.0m a (2.5) ≈ 24/≈ 23 aBouvier et al. (1999) TABLE 2 Photometry of Alpha Persei Stars Star α(J2000) δ(J2000) Ic R − Ic K Ic − K AP300 3 17 27.6 49 36 53.0 17.85 2.18 14.62 3.23 AP301 3 18 09.2 49 25 19.0 17.75 2.22 14.14 3.61 AP302 3 19 08.4 48 43 48.5 17.63 2.08 ······ AP303 3 19 10.9 48 42 20.0 16.98 1.88 ······ AP304 3 19 13.2 48 31 55.0 18.83 2.40 ······ AP305 3 19 21.7 49 23 32.0 18.48 2.34 ······ AP306 3 19 41.8 50 30 42.0 18.40 2.34 14.9 3.5 AP307 3 20 20.9 48 01 05.0 17.08 2.01 ······ AP308 3 20 59.7 48 18 37.0 16.71 1.89 ······ AP309 3 22 40.6 48 00 36.0 16.57 1.88 ······ AP275 a 3 23 03.3 48 53 07.0 17.25 2.20 ······ AP310 3 23 04.7 48 16 13.0 17.80 2.33 14.55 3.25 AP311 3 23 08.4 48 04 52.5 17.70 2.12 14.30 3.40 AP312 3 23 14.8 48 11 56.0 18.60 2.41 15.21 3.39 AP313 3 24 08.1 48 48 30.0 17.55 2.13 ······ AP314 3 25 19.6 49 17 58.0 18.20 2.26 15.15 3.05 AP315 3 26 34.5 49 07 46.0 18.20 2.34 14.80 3.40 arXiv:astro-ph/9909207v2 15 Sep 1999 AP316 3 27 01.3 49 14 40.0 17.75 2.18 14.48 3.27 AP317 3 28 06.0 48 45 13.5 17.85 2.29 15.0 2.85 AP318 3 30 42.5 48 21 27.0 17.45 2.16 14.10 3.35 AP319 3 31 03.2 49 02 58.0 16.89 1.95 ······ AP320 3 31 25.3 49 02 52.0 16.79 1.90 ······ AP321 3 32 18.7 49 32 18.0 17.75 2.20 ······ AP322 3 33 08.3 49 37 56.5 17.60 2.14 14.57 3.03 AP323 3 33 20.7 48 45 51.0 17.50 2.13 14.33 3.17 AP324 3 33 48.2 48 52 30.5 18.10 2.36 14.68 3.42 AP325 3 35 47.2 49 17 43.0 17.65 2.30 14.14 3.51 AP326 3 38 55.2 48 57 31.0 18.70 2.40 15.09 3.61 aAP275 is from Prosser (1994).