The purpose of this feature is to give scout leaders, educators and naturalists an idea of some of the natural events coming up each month. We will try to cover a variety of natural events ranging from sky events to calling periods of amphibians, bird and mammal watching tips, prominent wildflowers and anything else that comes to mind. We will also note prominent constellations appearing over the eastern horizon at mid-evening each month for our area for those who would like to learn the constellations. If you have suggestions for other types of natural information you would like to see added to this calendar, let us know!
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Notes and Images From May 2017
Sky Events for June 2017:
Thesummer solstice occurs at 11:24pm Central Daylight Time on June 20th, marking the beginning of summer in the Northern Hemisphere. This is our longest day of the year, and our shortest night.
Mars slips into the twilight glow at dusk during the first few days of the month. Telescopically, it is tiny, measuring less than 4 seconds of an arc in apparent diameter. Binoculars will make it easier to pick out of the twilight, but it will be a difficult target.
Jupiter continues to rule the night sky this month. It transits around 8:55pm CDT. Binoculars, steadily held, will usually show several of the Gallilean moons. Jupiter is in retrograde motion as the Earth swings by it, appearing to retrace its path in the sky before continuing on its way. Its distance from the bright star Spica will continue to increase till around the middle of June, then start decreasing again as it returns to its normal stately eastward progression relative to the background stars.
Saturn is in Ophiuchus as the month begins, rising around 8:49pm CDT. The tilt of the rings has now opened to 26.5 degrees, and the view is spectacular in any size telescope. The planet transits around 1:47am CDT. Saturn is pretty low in the south, so the best telescopic views will be close to the the time it transits. Saturn will come to opposition on the night of June 15th. The globe of Saturn will appear 18.3 seconds of an arc in diameter.
Venuscontinues to dazzle in the early morning sky. It will reach greatest elongation from the Sun on the morning of June 3rd. As the distance between Earth and Venus increases, the planet will appear smaller and smaller. By the end of this month Venus will appear slightly gibbous.
Constellations: The views below show the sky looking east at 10:00pm CDT on June 15th. The first view shows the sky with the constellation outlined and names depicted. Star and planet names are in green. Constellation names are in blue. The second view shows the same scene without labels. New constellations this month in the eastern sky are Lyra, the Lyre, with its bright star Vega, Cygnus, the Swan, and Aquila, the Eagle. The bright stars Vega, Deneb and Altair form the "summer triangle." Looking to the north, the edge-on galaxy NGC 5907 rides high above the Little Dipper in Draco. This galaxy was discovered in 1788 by William Herschel. Most estimates place it at a distance of around 40 million light-years. Using averted vision, I've seen it as a faint narrow streak of light in my 85mm Televue refractor. A 6 inch telescope will give you a better view. As with all deep sky objects, you need a clear dark sky.
On Learning the Constellations: We advise learning a few constellations each month, and then following them through the seasons. Once you associate a particular constellation coming over the eastern horizon at a certain time of year, you may start thinking about it like an old friend, looking forward to its arrival each season. The stars in the evening scene above, for instance, will always be in the same place relative to the horizon at the same time and date each June. Of course, the planets do move slowly through the constellations, but with practice you will learn to identify them from their appearance. In particular, learn the brightest stars (like Altair and Vega in the above scene looking east), for they will guide you to the fainter stars. Once you can locate the more prominent constellations, you can "branch out" to other constellations around them. It may take you a little while to get a sense of scale, to translate what you see on the computer screen or what you see on the page of a book to what you see in the sky. Look for patterns, like the stars that make up the constellation Lyra.
The earth's rotation causes the constellations to appear to move across the sky just as the sun and the moon appear to do. If you go outside earlier than the time shown on the charts, the constellations will be lower to the eastern horizon. If you observe later, they will have climbed higher.
As each season progresses, the earth's motion around the sun causes the constellations to appear a little farther towards the west each night for any given time of night. If you want to see where the constellations in the above figures will be on July 15th at 10:00pm CDT, you can stay up till 12:00am CDT on June 15th and get a preview. The westward motion of the constellations is equivalent to two hours per month.
Sky & Telescope's Pocket Star Atlas is beautiful, compact star atlas.
For skywatching tips, an inexpensive good guide is Secrets of Stargazing, by Becky Ramotowski.
A good general reference book on astronomy is the Peterson Field Guide, A Field Guide to the Stars and Planets, by Pasachoff. The book retails for around $14.00.
The Virtual Moon Atlas is a terrific way to learn the surface features of the Moon. And it's free software. You can download the Virtual Moon Atlas here.
Cartes du Ciel (described in the monthly notes above) is a great program for finding your way around the sky. It is also free, and can be downloaded here.
Apps: We really love the Sky Safari 5 Pro. It is available for both iOS and Android operating systems. There are three versions. The Pro is simply the best astronomy app we've ever seen. The description of the Pro version reads, "includes over 27 million stars, 740,000 galaxies down to 18th magnitude, and 620,000 solar system objects; including every comet and asteroid ever discovered."
For upcoming events, theSky Week application is quite nice. Available for both I-phone and Android operating systems.
Another great app is the Photographer's Ephemeris. Great for finding sunrise, moonrise, sunset and moonset times and the precise place on the horizon that the event will occur. Invaluable not only for planning photographs, but also nice to plan an outing to watch the full moon rise. Available for both androids and iOS.
In June the treefrogs really hit their stride. Listen for Cope's Gray Treefrogs, Gray Treefrogs, Bird-Voiced Treefrogs, Green Treefrogs and Barking Treefrogs. Northern Cricket Frogs and Southern Cricket Frogs call a lot during June, and the calls of Bullfrogs, Green Frogs and Fowler's Toads fill the night air. After heavy rains listen for the high, insect-like call of the Eastern Narrowmouth Toad and the strange-sounding Eastern Spadefoot.
Recommended: The Frogs and Toads of North America, Lang Elliott, Houghton Mifflin Co.
Now is a good time to get to know the breeding birds of Tennessee. It's fun to take a trip to the Great Smoky Mountains National Park in June and hike a high altitude trail, like the Alum Cave Bluff trail. By doing so you can encounter birds that breed in Tennessee at these higher elevations, like Black-throated Blue Warblers, Canada Warblers, Chestnut-sided Warblers and Blackburnian Warblers.
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Natural Calendar December 2013
Nature Notes Archives: Nature Notes was a page we published in 2001 and 2002 containing our observations about everything from the northern lights display of November 2001 to frog and salamander egg masses.
Night scenes prepared with The Sky Professional from Software BisqueAll images and recordings © 2017 Leaps.