If you visit Bemidji State University, and walk around the north end of Deputy Hall, on the east side of the building (up the hill from Sattgast Hall) you will find a big concrete slab.   What is that doing there?  Well, originally, before 1958 when Elaine and I arrived in Bemidji), Bemidji State College’s power plant was in the Deputy basement.  Some time before 1958, BSC built the present power plant, and that has been upgraded since.  But the chimney that got rid of the smoke from the coal furnace in Deputy Hall’s basement remained.

     Back then, spring quarter ended in late May.  Swifts are late arrivers from their wintering grounds in Peru, and hundreds of swifts used the chimney in May as a pre-nesting roost.  They would converge daily at sundown in a huge flock, and wheel around the chimney, with a few dropping down into it with each turn.  Swifts twitter as they fly, and the wheeling flock made quite a noise.  I don’t remember timing it, but I expect it took 10-20 minutes for all of the crowd to disappear down the chimney.  It was a spectacular thing for my ornithology class to watch, perhaps the last “field trip” before the end of Spring Quarter, while the swifts were still using the mass roost before pairing off to start individual nests in smaller chimneys and natural cavities.

     Unfortunately, the Vice President for Administration did not know it was a class resource, and had it taken it down sometime in the ’60s.  The concrete slab covers the area where the chimney came out of the ground.

     Best place to see swifts in town now is around sunset as they hunt insects over the downtown streets.  If you eat at Tutto Bene or Brigid’s early enough, it will still be light when you come out.  Their twittering which may attract your attention if you are not already looking for them.

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A weird super-Earth in Cancer.

Cancer is an inconspicuous constellation; its major feature is not its stars but Praesepe, the Beehive Cluster, a fine binocular object. One of Cancer’s dimmer naked eye stars is 55 Cancri, just 41 light years away, a bit cooler and dimmer than Sol. But it has become a big deal: 55 Cancri is the brightest star yet found that has a planet transiting it; that is, crossing its face as seen from Earth. We cannot, of course see the planet, but “we” (astronomers, not I) can detect the small, regular decrease in 55 Cancri’s light as the planet goes by. For more info, go to:

http://www.skyandtelescope.com/community/skyblog/newsblog/121249239.html

If clicking on it doesn’t work, try copying it and pasting it into your browser.

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This one contains the URLs

Let’s try again. Maybe I can get it to actually print the URLs this time.

The Sky & Telescope update that arrived Friday 6 May had more info on the dance of four planets that early risers can see before sunup above the eastern horizon this month. It has three URLs for you to visit. The first: http://www.skyandtelescope.com/community/skyblog/observingblog/117347948.html describes what is going on. The second: http://media.skyandtelescope.com/video/planet-animation-may2011.mov May ’11 is a 4-planet pre-dawn day-by-day dance movie. You will need binocs, especially to see dim Mars. The third: http://www.skyandtelescope.com/resources/astronomyday/Astronomy_Day.html is about Astronomy Day, which was last Saturday, and the acitivities you coukd have participated in, even if you don’t have a local astronomy club. Actually, some of you youngsters with vision corrected to 20/20 should start one.
Have fun.

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Correction to previous blog.

Correction: On those three URLs, the words “May ’11 4-planet dance article”, “4-planet dance movie”, and “= Astronomy Day article.> are NOT parts of the URLs, just identifiers. Sorry, but the blue ink of the URLs didn’t come through when I copied from WORD to my blog site.

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Pre-dawn 4-planet May dance.

The Sky & Telescope update that arrived today, Friday 6 May had more info on the dance of four planets that early risers can see before sunup above the eastern horizon this month. It has three URLs for you to visit. The first:
describes what is going on, and the second: takes you to a short movie showing day by day changes throughout May. The third is about Astronomy Day, which is tomorrow, and the acitivities you can participate in, even if you don’t have a local astronomy club. Actually, some of you youngsters with vision corrected to 20/20 should start one. That site is:
= Astronomy Day article.

Have fun.

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There is a Sky & Telescope entry, with a diagram, on using Luna [our moon] as a guide to find Venus in the daytime on Monday 28 Feb. and Tuesday 1 March.  Click the colorful link below to get there.  Enjoy.  I should try to get back to this more often, but I’ve been busier than usual lately. 

Click the following to access the sent link:
   
 
SkyandTelescope.com – Observing Blog – See Venus in Broad Daylight!*
 
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Critters’ Latin Names

For completeness, some biologists like to include the Latin names of each species mentioned in their writings. Here is the scientific classification of each vertebrate species mentioned in “Threescore and Ten” in “Prime Time” in the 10 August 2010 Bemidj Pioneer. (Some biologists frown on use of the term ” Reptilia”, but I don’t.)

Class Reptilia, Order Squamata, Family Crotalidae, Crotalus viridis. Prairie Rattlesnake.
Class Aves, Order Falconiformes, Family Accipitridae, Haliaeetus leucocephalus. Bald Eagle.
Class Aves, Order Falconiformes, Family Accipitridae, Buteo regalis. Ferruginous Hawk.
Class Aves, Order Passeriformes, Family Fringillidae, Carpodacus mexicanus. House Finch.
Class Aves, Order Passeriformes, Family Passeridae, Passer domesticus. House Sparrow.
Class Mammalia, Order Primates, Family Hominidae, Homo sapiens. Human.
Class Mammalia, Order Carnivora, Family Canidae, Canis latrans. Coyote.
Class Mammalia, Order Carnivora, Family Canidae, Canis lupus familiaris. Domestic Dog.
Class Mammalia, Order Carnivora, Family Mustelidae, Mustela nigripes. Black-footed Ferret.
Class Mammalia, Order Rodentia, Family Sciuridae, Sciurus carolinensis. Eastern Gray Squirrel.
Class Mammalia, Order Rodentia, Family Sciuridae, Cynomys ludovicianus. Black-tailed Prairie Dog.
Class Mammalia, Order Rodentia, Family Sciuridae, Spermophilus richardsonii. Richardson’s Ground
Squirrel.
Class Mammalia, Order Rodentia, Family Sciuridae, Spermophilus tridecemlineatus. Thirteen-Lined
Ground Squirrel
Class Mammalia, Order Rodentia, Family Sciuridae, Spermophilus franklinii. Franklin’s Ground
Squirrel
Class Mammalia, Order Artiodactyla, Family Cervidae, Odocoileus virginianus. White-tailed Deer

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Perseid and BSO concert reminders.

This coming Thursday and Friday, and maybe even Wednesday, night owls in particular should look for Perseid meteors.  I mentioned them in the last Northland Stargazing, but it doesn’t hurt to be reminded.  Moonlight will not be a problem, but clouds are less predictable.  Dress warmly, and use DEET for mosquitoes.  Meteors anywhere in the sky that seem to come from the direction of the costellation Perseus are Perseids.  Any others are just lagniappe.  You may see some in the late evening but the shower should be better in the wee hours. 

The BSO concerts mentioned in Patt Rall’s blog in "Our Voices" on The Bemidji Pioneer website are worth seeing/hearing.  We went to the first one, at Calvary Lutheran.  The other sites, dates, and times are in Patt’s blog.  The concerts comprise a newly commissioned work and the original chamber music version of Copeland’s "Appalachian Spring", a favorite of ours.  If you can make it to one of the remaining dates, go.  Admission is free.

 

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I forgot Bastille Day!

      Sacré Bleu!   I forgot to send out Bastille Day greetings on Wednesday, 14 juillet.  Actually, aside from its historical significance in the French Revolution, it has been important to me twice.
      In ’85, we were in Paris on Bastille Day.   It gets hectic.   But, early the evening before, while walking back from a Metro station to the apartment of a friend, suddenly there were hundreds of dots "up in the sky".  Actually, they were "floaters", and in only one eye.   A capillary apparently had burst, and a host of red blood cells were spooking me.  Had it checked when we got back to Bemidji, probably by my former student Dr. Larry Womack.  Not life- or vision-threatening, and they eventually went away.
      The other was that, on 14 July ’07, I started the low-fat diet my family physician prescribed, in an attempt to lower my total cholesterol without medication.  As I believe I described in a column that fall, it worked, and I lost some 15 lb. in the process.  It still works.   So I’m just starting year 4.

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Western sky at dusk, 9-16 July

Tonight, 9 July, an hour after sunset, Regulus (in Leo) will be a degree to the lower left of much brighter Venus.

13-16 July, 45 minutes after sunset, Mercury, Regulus, Venus, Mars, and Saturn will form a rough diagonal line from the WNW horizon to the upper left (to the south).  You will likely need binocs to find Mercury (and maybe even Regulus) in the sunset’s glare.  On these same night a waxing crescent Luna will work its way south below this diagonal grouping.

Remember, the management is not responsible for clouds.  I don’t think the "Management" is either, though It may enjoy watching them. 

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