Use binoculars to spot Eta Leonis, magnitude 3.5, very close by the Moon. The Moon is roughly between Regulus lower right of it and Algieba, slightly fainter, left of it (for North America). ■ The bright waxing gibbous Moon shines in the Sickle of Leo as darkness falls. Also, in these scenes the Moon is shown three times its actual apparent size.
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TUESDAY, MARCH 15 The nearly full Moon occults Eta Leonis on the evening of March 15th, but only for some locations. The Cleaver is chopping toward the lower right. Down to Sirius's lower left is the Cleaver's other end including its short handle, formed by the triangle of Adhara, Wezen, and Aludra. Sirius and Murzim (to its right) are the wide top end of the Cleaver, with Sirius sparkling on its top back corner. These form the unmistakable Meat Cleaver.
But for most of us, only his five brightest stars show well through the light pollution. In a very dark sky the Big Dog's realistic stick figure is plain to see - he's seen in profile prancing to the right on his hind legs, with Sirius on his chest as his shiny dog tag. ■ More about Sirius and its constellation Canis Major. Arcturus is high up and dominates the eastern sky. The farther north you are, earlier Arcturus rises.īy 9 or 10 p.m. Follow the curve of its handle down and around to the lower right by a little more than a Dipper-length. To see where to watch for it to come up, find the Big Dipper as soon as enough stars come out. But the Spring Star Arcturus rises above the east-northeast horizon around the end of twilight now, depending on your latitude. The article in the March Sky & Telescope, page 48, will enable you to give it your very best shot. but what about the brightest star? At this time of year Sirius is nearing the meridian in late afternoon before sunset. ■ A different Sirius challenge: Find it in the daytime! Venus is sometimes not hard to see with the naked eye in a clean blue sky, if you land on the precise spot to examine, and it's much easier with binoculars or a telescope. Hide blinding Sirius A just behind the strip's eastern edge.
As Bob recommends, put a homemade occulting bar across your eyepiece's field stop: a tiny strip of aluminum foil held to the field stop with a bit of tape, with one edge of the foil crossing the center of the field. The Pup is east-northeast of the Dog Star and 10 magnitudes fainter: one ten-thousandth as bright. See the additional tips in Bob King's article Sirius B – A New Pup in My Life. Keep checking night after night top-notch steady seeing makes all the difference for spotting Sirius B. You'll want at least an 8- or 10-inch scope and a night of really excellent seeing. They'll remain very nearly as wide for the next few years before they start closing again. Sirius A and B are at their farthest apart in their 50-year orbit, separated by 11.3 arcseconds (they're exactly farthest apart next year if you're picky). The seeing often steadies in twilight, so this may be a good time to try for Sirius B, the Dog Star's notoriously difficult white-dwarf companion. ■ Sirius blazes high in the south on the meridian in late twilight this week. Lower right of Procyon shines brighter Sirius. Pollux is the one closest to it.ĭown below this group is Procyon. ■ Pollux and Castor accompany the Moon across the sky tonight, as shown above. (The "8 p.m." is standard time on Sunday the 13th that means 9 p.m. The waxing gibbous Moon passes under the heads of Gemini. When you face south after dark, Pollux and fainter Castor shine to the Moon's left by about a fist at arm's length, as shown below.Īt roughly right angles to that direction, the Moon shines almost exactly midway between Capella and Procyon (during evening in North America): about 2½ fists from each. ■ The waxing gibbous Moon this evening shines high in Gemini.
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