October 2015 Urban Observing October 8, 2015Posted by aquillam in MichiganAstro, Urban Observing.
Tags: amateur_astronomy, Jupiter, Mars, Mercury, meteor shower, Moon, Saturn, Uranus, urban observing, Venus
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October begins the most active time of year for meteor showers. While few individual showers are as active as August’s Perseids, several overlapping showers make fall a great time to bundle up and get outside.
The showers actually started at the end of September with the southern Taurids. This is a low activity shower, so you’ll barely notice it’s active. However, it’s especially good for southern sky watchers, and a lot of its meteors are fireballs. It doesn’t have a district peak, but remains active in to early November.
Next up are the Orionids. They are active early October to mid November, with a peak on October 21-22. Most years this is a moderately active shower with about 20 meteors per hour. In some years it’s very active, with rates comproble to the Perseids, but at this time we don’t know how to predict if it’s an average or better than average year. Check the AMS weekly blog for the most current predictions.
Finally the Northern Taurids are a close cousin to the Southern Taurids. Like the Southern Taurids, this is an extended shower with a low rate but a high number of fireballs. It is active from mid October to early December.
If you prefer to listen to meteor showers, check out the Draconids. Because of its position in the sky, the best time to observe these is actually late afternoon and early evening. That makes this a great shower to try out the radio observation techniques.
New on October 13
Full October 26 – this is the last “super moon” of the year.
Morning planet watchers are in for several treats this month. Even if you aren’t normally in early riser, you may want to get up on October 28 for a rare three planet conjunction. Mars, Venus, and Jupiter will all be within 1° of each other on that morning.
Mercury reaches greatest Western Elongation on October 16, so the second and third week in October should be a great time to observe Mercury in the morning.
Venus reaches greatest western elongation on October 26. It will be a good morning object for the rest of the year. However, it’s approaching a new Venus, so although it’s getting closer to us, it’s actually getting dimmer as well. It makes a tight group with Regulus and the Moon on October 8.
Mars is overshadowed by the other brilliant morning planets. A thin crescent Moon passes it on October 9. It is less than half a degree from Jupiter on the 17.
Jupiter has fully emerged into the morning skies by the beginning of the month. If it weren’t for Venus, it would be the jewel of the morning skies. Look for it in conjunction with Venus on the 26th.
Saturn quickly disappears into the evening twilight. Look for it with a crescent Moon at sunset on October 15 & 16.
If you have a telescope, October will be a great time to look for Uranus. It reaches opposition on October 11. If you can get away from the urban lights, you might even be able to catch it naked eye.
September 2015 Urban Observing September 1, 2015Posted by aquillam in Astronomy, Urban Observing.
Tags: lunar eclipse, Mars, Mercury, Moon, Neptune, Saturn, Uranus, urban observing, Venus
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If you happen to be in southeast Michigan on September 25 or 26, head to Kensington Metropark! Kensington Astronomy at the Beach is the biggest astronomy event in the area, and a very unique one. Amateurs and professionals alike work together to put on this event that includes everything from guided sky tours to big ‘scopes you can look through. Talks, planetarium shows, demonstrations and activities go on no matter what the weather is like. Visit GLAAC.org for more information.
September marks another lull in significant meteor shower activity. However, minor showers and the ambient meteor level are slightly higher at this time of year, so if you happen to be out late, or early, it’s worth watching for a few. As usual, it is much better to look for meteors under dark skies than the normal urban skies. Check out the weekly update form the american meteor society for week-by-week predictions.
The autumnal equinox occurs on September 23 at 8:22 UTC , which is 4:22 AM in Michigan.
A well timed total lunar eclipse occurs on September 27, starting just after sunset in Michigan. Maximum eclipse occurs in Ann Arbor and 10:47 PM, when the Moon will be high in the southeast. For timing details and more information, or information on another location, see http://www.timeanddate.com/eclipse/in/usa/ann-arbor.
Of course if there’s a lunar eclipse there must be a solar eclipse too. In this case, it’s a partial eclipse visible from parts of Africa and the Indian Ocean.
Full: September 27. This is the closest full moon if the year.
New: September 11
Observers in the northeast may have the chance to see the Moon occult Aldebaran on September 5th. Unfortunately in southeast Michigan, it ends just before moonrise.
Mercury is at greatest eastern elongation on the 4th, so it’s visible in the evening at the start of the month, but look for it soon. The ecliptic is low to the horizon at sunset for northern hemisphere observers at this time of year, so it gets really hard really fast to spot. On the other hand,southern hemisphere observers get their best chance all year! It’ll be in conjunction on the 30th, so no one will really get to see it by the last week of the month.
Venus is the gem of the morning skies. Just passed conjunction at the start of the month, it’s so bright it’s easily mistaken for plane or other terrestrial object. A pair of binoculars should be all you need to pick out it’s crescent shape. It’s headed for maximum westward elongation at the end of October so you’ll have plenty of time to spot it. It lines up with the Moon and Mars between Regulus and Procyon on September 9. Use binoculars or a small ‘scope to pull the objects out of the morning twilight.
In a mythically appropriate pairing, Mars is near Venus all month. Unfortunately it’s not nearly as bright as Venus so it’ll be tough to spot in the morning twilight. Also look for Mars and Regulus to make a close pair on September 25.
Jupiter is just past conjunction at the start of the month. Look for it in the morning twilight after the first week.
Saturn is well up at sunset now, the only naked eye planet in the evening skies. The ring tilt is big enough to be visible with just a pair of binoculars. A small ‘scope should enable you to pull out the Cassini division. It makes a nice pair with red Antares all month, but be sure to look on the 18th & 19th when the moon joins the pair.
Rising around 9:30 at the start of the month, Uranus is not a bad target no matter what time of night you observe. It pairs with the moon on the 1st and again on the 28th.
Neptune opposition is September 1, which actually makes this the best month this year to spot this distant blue planet. It’s a bit tough though. There aren’t many landmarks to guide you. The Moon will help on September 25.
December 2014 Urban Observing post 1 December 1, 2014Posted by aquillam in Astronomy, MichiganAstro, Urban Observing.
Tags: Moon, Saturn, Uranus, urban observing, Venus
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November kind of got away from me, again. So here’s a short post to tide you over until the real one in a couple of days.
On December 1, the Moon is less than 1º from Uranus. Jupiter rises around 11 PM.
It becomes reasonable to look for Saturn in the pre-dawn sky during the first week of December. Even better, “pre-dawn” is around 7 AM. Mercury however is gone.
With binoculars, you might catch Venus in the southwest half an hour after sunset during the first week.
Mark your calendars for the Geminid meteor shower, which peaks on the morning of the 13th. However, Spaceweather.com reports that observers are already seeing a few of these. Gemini rises around 8:30, but you’ll see the most meteors after midnight.
On December 5, a nearly full moon passes through the Hyades.
Full Moon: Dec 6 at 7:27 EST.
Urban Observing October 2014 October 6, 2014Posted by aquillam in Astronomy, MichiganAstro, Urban Observing.
Tags: Jupiter, lunar eclipse, Mars, Mercury, Neptune, Saturn, Solar eclipse, Uranus, urban observing, Venus
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October makes up for a couple fairly quiet months with several events.
October gets off to a great start with a lunar eclipse on the 8th. You can read my earlier post about it, or check out http://www.timeanddate.com/eclipse/lunar/2014-october-8 to get details about observing it where you are. If it isn’t visible or the weather is bad, check out one of the many live feeds from the Griffith Observatory, Slooh.com, or Stargazers.
Whenever there’s a lunar eclipse, there should be a Solar eclipse two weeks latter. Most of the US will get at least a piece of this partial eclipse on October 23. I’ll post more about that in a couple weeks. To check if you’ll be able to see it and how much of the Moon will be obscured, check out http://eclipse.gsfc.nasa.gov/SEsearch/SEsearchmap.php?Ecl=20141023 or http://www.timeanddate.com/eclipse/solar/2014-october-23.
The Draconids run roughly Oct 6 – 10, and peak on the morning of the 9th. The nice thing about this shower is this is circumpolar for anyone in the US or Canada. The bad thing is the peak rate is only about two meters per hour, they tend to be faint, and it’s the day after the full moon, so it’s only really worth watching for the diehard meteor fans.
The Orionids on the other hand are much more worth watching. They run October 1 through November 14 but peak on the evening/morning of October 21 – 22nd. In a typical year the peak is 20 to 25 fast-moving meters per hour. Exceptional years can produce 50 to 70 meteors per hour. Check the American Meteor Society homepage, http://www.amsmeteors.org/ a few days before to find out if this is expected to be an exceptional year. Orion rises at 11:15 on the 21st, and transits at about 5 AM on the 22nd. With sunrise just before 8 AM, the best time to watch for these meteors will be about 4 – 6 AM.
A Comet at Mars
On October 19, comet Siding Spring has a close encounter with the planet Mars. It will pass a mere 132,000 km away from the planet, which is close enough for their atmospheres to interact. What better time for two new space probes to arrive at Mars! In fact, the Mars exploration teams at NASA are so excited they dedicated a page just to comet Siding Spring: http://mars.nasa.gov/comets/sidingspring/. Expected to be around magnitude 10, you’ll need a telescope to spot the comet.
Full on Oct 8
New Moon Oct 23
Mercury is sinking fast in the west as the month begins. Look for it in the morning skies beginning around Oct 21. Greatest westward elongation is actually on Nov 1, so the last few days of the month should be a great time for morning observers to catch this elusive planet.
Already lost in the Sun’s glare at the start of the month, Venus is headed for superior conjunction on Oct 25. It’ll appear in the evening skies around early December, and those long winter nights should make for spectacular Venus observing.
Mars is getting farther away from us as it approaches the Sun this month. Matched with it’s rival Antares, and not far from Saturn, it makes a beautiful naked eye observing opportunity at the beginning of the month. It slowly drifts away from Saturn as the month progresses. On Oct 27 & 28 a fat crescent Moon passes it.
Jupiter is the gem of the morning skies this month. A fat waning crescent Moon passes it on Oct 17 and 18th.
Saturn disappears slowly into the sunset this month. Look for a very young Moon in conjunction with Saturn on Oct 25.
Neptune hangs out in Aquarius this month. It’s actually quite close to the 4th magnitude star Sigma Aquarii.
Uranus is at opposition at the start of the month, so it’s a great time to observe this distant world. Catch it on the morning of October 8 when it sits just off the limb of the eclipsed Moon!