Skywatch Line Archive

Skywatch Line for Monday September 27th and Tuesday September 28th, 2021

This is the Dudley Observatory’s Skywatch Line for Monday and Tuesday September 27th, and 28th, written by Joe Slomka. The Sun sets at 6:56 PM; night falls at 8:21. Dawn begins at 5:15 AM and ends with the Sun rising at 6:50. Monday’s Moon rises at 10:20 PM, 30 arc-minutes in size and 59% illuminated; it sets on Tuesday at 2:21 PM. This Moon is located between Taurus’ horns. Tuesday’s Moon is officially Last Quarter at 9:57 PM; it rises, in Gemini, at 11:06 PM, almost 30 arc-minutes and 50% lit. The Moon sets Wednesday at 3:13 PM. Venus is… Continue reading

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Skywatch Line for Friday, September 24, through Sunday, September 26, 2021

This is Dudley Observatory’s Skywatch Line for Friday, September 24, through Sunday, September 26, written by Sam Salem. On Friday, Sun rises at 6:45am and sets at 6:48pm; Moon sets at 10:18am and rises at 8:43pm. On Friday morning, watch the Moon sitting below the magnitude 5.7 Uranus in the west-southwestern sky. When they rise again on Friday night, the Moon will sit 5 degrees to Uranus’ lower left, close enough for them to share the view in binoculars. The blue-green dot of Uranus can be seen in binoculars. Note Uranus’ location between the stars of the constellations of Aries… Continue reading

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Skywatch Line for Monday September 20th and Tuesday September 21st, 2021

This is the Dudley Observatory’s Skywatch Line for Monday and Tuesday September 20th, and 21st, written by Joe Slomka. The Sun sets at 6:56 PM; night falls at 8:21. Dawn begins at 5:07 AM and ends with the Sun rising at 6:42. The Moon is officially “Full” at 7:55 PM Monday. Which means that it rises in Pisces at sunset (7:14 PM) and sets shortly after sunrise (7:06 AM). Tuesday, the Moon shifts to Cetus, rising at 7:36 PM, 99% illuminated and sets at 8:11 AM, Wednesday. Southwestern Venus is still the “evening star.” It blazes with minus 4th magnitude,… Continue reading

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Skywatch Line for Friday, September 17, through Sunday, September 19, 2021

This is Dudley Observatory’s Skywatch Line for Friday, September 17, through Sunday, September 19, written by Sam Salem. On Friday, Sun rises at 6:37am and sets at 7:01pm; Moon sets at 2:28am and rises at 5:53pm. On Friday and Saturday evenings, the Moon can guide you to Jupiter and Saturn. Jupiter and Saturn shine in the southeast to south. They’re magnitudes –2.8 and +0.4, respectively, on opposite sides of dim constellation Capricornus the Seagoat. On Friday, the bright waxing Moon will sit below and between Jupiter and Saturn among the faint stars of the constellation Capricornus. The trio will shine… Continue reading

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Skywatch Line for Monday September 13th and Tuesday September 14th, 2021

This is the Dudley Observatory’s Skywatch Line for Monday and Tuesday September 13th, and 14th, written by Joe Slomka. The Sun sets at 7:21 PM; night falls at 8:59. Dawn begins at 4:58 AM and ends with the Sun rising at 6:34. The Moon reaches First Quarter on Monday at 4:39 PM; it rises at 2:20 PM, sets at 11:17 PM and appears 51% illuminated, 32 arc-minutes in size and 21° high at 7:21 PM Tuesday. It rises at 3:28 PM, 20° high, 63% lit and sets at 12:13 AM, Wednesday. Monday, Antares, the Moon, Saturn and Jupiter enliven the… Continue reading

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Skywatch Line for Friday, September 10, through Sunday, September 12, 2021

This is Dudley Observatory’s Skywatch Line for Friday, September 10, through Sunday, September 12, written by Sam Salem. On Friday, Sun rises at 6:30am and sets at 7:14pm; Moon rises at 10:32am and sets at 9:21pm. Look low in the southwestern sky on Sunday evening for the waxing, nearly half-illuminated Moon shining several finger widths to the upper right of Scorpius’ bright, reddish star Antares. The duo will share the field of view in binoculars. Off to their right, spot the vertical row of scorpion’s fainter white claw stars Graffias, Dschubba, and Pi Scorpii. That part of the sky will… Continue reading

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Skywatch Line for Wednesday, September 8, and Thursday, September 9, 2021

This is Dudley Observatory’s Skywatch Line for Wednesday, September 8, and Thursday, September 9, written by Alan French. The Sun sets at 7:18 P.M. on Wednesday and rises at 6:29 A.M. Thursday. Sunset Thursday is at 7:16 and the Sun will rise at 6:30 on Friday. The Moon was new last Monday and has returned to the early evening sky, although it will be low in the west just after sunset and set early. The Moon will reach first quarter on Monday, September 13. Remember that angular distances in the night sky are easy to measure using just your hand.… Continue reading

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Skywatch Line for Monday September 6th and Tuesday September 7th,

This is the Dudley Observatory’s Skywatch Line for Monday and Tuesday September 6th, and 7th, written by Joe Slomka. The Sun sets at 7:21 PM; night falls at 8:59. Dawn begins at 4:47 AM and ends with the Sun rising at 6:27. Monday, the Moon turns “New” at 8:52 PM, which means that it is hidden all night. Tuesday, it is found in Virgo, rising at 6:51 AM, 32 arc-minutes large, 1% lit, sets at 8:04 PM and only 7° above the western horizon. Virgo still houses Venus and Mercury. Venus is brightest and highest, in the West. It blazes… Continue reading

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Skywatch Line for Friday, September 3, through Sunday, September 5, 2021

This is Dudley Observatory’s Skywatch Line for Friday, September 3, through Sunday, September 5, written by Sam Salem. On Friday, Sun rises at 6:22am and sets at 7:26pm; Moon rises at 2:14am and sets at 6:03pm. For about an hour before dawn on Saturday morning, look in the eastern sky for the slim crescent of the waning Moon shining several finger widths to the left of the huge open star cluster known as the Beehive, Praesepe and Messier 44. Praesepe is Latin for manger. The Moon and cluster will be close enough to share the field of binoculars, but you’ll… Continue reading

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Skywatch Line for Wednesday, September 1, and Thursday, September 2, 2021

This is Dudley Observatory’s Skywatch Line for Wednesday, September 1, and Thursday, September 2, written by Alan French. The Sun sets at 7:30 P.M. on Wednesday and 7:28 on Thursday. Sunrise it at 6:21 A.M. Thursday and 6:23 on Friday. Our daylight hours continue to grow shorter. The Moon was at last quarter early last Friday and is now moving toward new. A waning crescent Moon rises at 1:17 A.M. Thursday and 2:14 A.M. Friday. Look for a 22% illuminated Moon toward the east at 5:30 A.M. Thursday morning. On Friday morning at 5:30 A.M. the Moon will be lower… Continue reading

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