Sky and Telescope - February 2013 - (Page 44) Sky at a Glance FEBRUARY 2013 Jan. 29 EARLY EVENING: The zodiacal light shows – Feb. 10 very well from dark locations at mid-northern Using the Map Go out within an hour of a time listed to the right. Turn the map around so the yellow label for the direction you’re facing is at the bottom. That’s the horizon. Above it are the constellations in front of you. The center of the map is overhead. Ignore the parts of the map above horizons you’re not facing. 12–20 DUSK: Mercury has an excellent evening appa- rition, at least 10° above the west-southwest horizon a half hour after sunset. 17, 18 EVENING: The Moon appears right of Jupiter on the 17th and left of Jupiter on the 18th. They form attractive triangles with nearby Aldebaran. Feb. 27 EARLY EVENING: The zodiacal light is again on – Mar. 12 display as described at the top of this section. 28 LATE EVENING AND NIGHT: Spica is very close to the Moon as seen from North America. The Moon occults (hides) Spica for viewers from eastern Mexico to central South America; see www.lunar-occultations.com/iota. M Feboon 25 E C L I P T I C CANCER M67 Planet Visibility SHOWN FOR LATITUDE 40° NORTH AT MID-MONTH ◀ SUNSET MIDNIGHT SUNRISE ▶ Moon Feb 21 IS N R CA INO M Pr 2 1 Mercury W Venus Mars Jupiter Saturn Visible February 2 through 24 Visible through February 8 SE Betelge use W S Visible through February 13 NW E S SW M 48 M O M N O ORIO C E R O S N M42 50 Moon Phases Last Qtr Feb. 3 8:56 a.m. EST First Qtr Feb. 17 3:31 p.m. EST S UN MON TUE WED M4 M4 7 6 Saiph Siri us New Feb. 10 2:20 a.m. EST Full Feb. 25 3:26 p.m. EST THU FR I S AT CA M9 3 NI S MA M4 1 JO R LEPUS 1 3 10 17 24 4 11 18 25 5 12 19 26 6 13 20 27 7 14 21 28 8 15 22 2 9 16 23 Galaxy Double star Variable star Open cluster Diffuse nebula Globular cluster Planetary nebula g SE 8h PU PP IS COLU MBA RDALIS 11 DUSK: Mercury shines lower left of the Moon. 82 crescent Moon well to the lower right of Mercury and Mars shortly after sunset. M M 10 DUSK: Binoculars may show an extremely thin 81 Facing Polaris bright twilight, a fine pair through a telescope. D g r Bi pe ip 8 DUSK: Mars is just 1/3° lower left of Mercury in URSA R MINO Mercury low in the west-southwest a half hour after sunset, a stunning binocular pair. A R S R O U AJ M 7 DUSK: Mars is 2/3° upper left of much brighter EXACT FOR LATITUDE ° 40° NORTH. Thuba n r iza r M Alco & upper right of the last-quarter Moon (for North America). See page 48. Li tt le D ip p er 51 3 PREDAWN AND DAWN: Saturn is above or M c Fa latitudes. Look west starting about 80 minutes after sunset for a left-sloping pyramid of light. orth CO DRA 14 h OBSERVING in g V C E A N N A E T S L MI EO NO R Sickl N E IC I LEO LY N X Cap 11 h Regulus e G A M3836 RI M AU lla Facing East e IN M G E tor as I M3 C Po llu x M44 M3 7 SEXT A DR HY Alph ard 5 +20 Ald ANS oc yo n Bellatr 0° R c Fa in –40° http://www.lunar-occultations.com/iota Table of Contents for the Digital Edition of Sky and Telescope - February 2013 Sky and Telescope - February 2013 Table of Contents Spectrum Letters 75, 50 & 25 Years Ago News Notes Secrets of the Northern Lights The Moon and the Mystery of the Hunley The Great Meteor Procession of 1913 Savvy Scoping In This Section February’s Sky at a Glance Binocular Highlight Planetary Almanac Northern Hemisphere’s Sky Sun, Moon & Planets Celestial Calendar Exploring the Moon Deep-Sky Wonders New Product Showcase Telescope Workshop Fulfilling a Lifelong Dream Observing with Astrovideo Cameras Gallery Focal Point Sky and 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