In the wee hours of the early morning, the constellation , "The Southern Cross," appeared over the horizon in the East. There inside of it, one could see, "The Jewel Box," a sparkling set of colorful stars. Following an arc of stars above the Southern Cross to the left, Omega Centauri...a globular cluster that may appear as a fuzzy ball to the naked eye (...if you have great eye sight!), is a cluster of distinct, shiny stars. Well worth staying up, or setting the alarm clock earlier, these nighttime delights of the southern sky bring a childhood sense of wonder back into our lives. Of course, the blowing palm trees and the cool night air help, too. "Clear skies and sunny days," the astronomers wish each other. I wish them to you, too. Al and Judi Nagler's eyepiece loaner enabled a fantastic, star-filled evening for those attending the Winter Star Party.
Around the firepit, earlier in the evening, Bob Summerfield entertained and educated the young and young at heart with the exciting pre-television and electronic game evening activity of the stories of the constellations. Following the pointer stars of the front Big Dipper (Ursa Major) to Polaris, to orient to the North and then following around the skies to other constellations, including Orion (and of course his belt...but Bob got the children laughing when he mentioned Orion's other garments), and Orion's weapons (to protect himself from Taurus (The bull about to charge into him). Orion couldn't fight the bull alone, so Sirius, his dog was nearby to help out, and the twins, Gemini (They go by Castor and Poloux), at the ready.
The lion appeared about to attack the Twins. Oh no! Quick, grab that frying pan (Another name for the Big Dipper) by the handle and bonk Leo on the head a few times to save Castor and Poloux.
Bob took his listeners around the Universe with a wonderful tale. He included many other parts to his story, like the ship with a, "poop deck," and how to remember where that was, and how it is now three constellations. His tale wove in the navigation star that many the satellites and space missions use for navigation, and the Seven Sisters, and importantly his night time story gave an important message on the difference between the science of astonomy and the pseudoscience of astrology. If you get a chance to hear Bob, don't miss it. (Check out the Summerfield's Astronomy to Go for your next event.)
More---
Read more about how one astronomer first became interested in astronomy:
http://televue.com/engine/page.asp?ID=203
http://www.astronomytogo.com/
http://cs.astronomy.com/asycs/blogs/astronomy/2010/02/11/falling-stars-2010-winter-star-party-wednesday-recap.aspx
Links to Pictures---
http://www.scas.org/wsp.html
http://www.abmedia.com/astro/articles/wsp06-trip.html
http://www.cfas.org/article.php?story=20100215223849431
---under development---
Showing posts with label TeleVue. Show all posts
Showing posts with label TeleVue. Show all posts
Wednesday, February 10, 2010
Wednesday, September 2, 2009
WYSIWYG vs What You See Depends on your Eyepiece
Microscopes, telescopes, and binoculars have lenses that enhance the capabilities of our eyes. Have you thought about the lenses and the physics of light enabling the microscopy and "macroscopy"?
When using a microscope, what do the lenses do? When using a telescope, what do the lenses do? And for a set of binoculars, what do the lenses do? Think about these questions and jot down your ideas before continuing.
What do you already know about the eye? Eyepieces?
The title, WYSIWYG---What you see is what you get (Borrowed from computer jargon)---
in fact is:
What you see does depend on the quality of your eyepiece.
Compare what you can see in a child's microscope with the photos taken from light microscopes found in a children's or college biology text book. As a child, I wondered why I couldn't get my microscope focused like that. As a college teacher, I discovered that many students, without them knowing of my own experience, had similar experiences comparing what they saw as children with what the textbook manufacturers had printed ("as possible".) The photographers were using different lenses on their microscopes than those available on most children's--- or, even first-year college students' microscopes.
Whereas that difference, between what my microscope showed me and what the text pictures presented, led me to continue learning about microscopes, it led others to total frustration that had to be undone when they reached their "required" college science course(s). Because of this realization and because of a recent experience at Stellafane using each telescope's own lens and then using a new ocular lens from Televue on both home-made (by others) telescopes and fancy purchased telescopes, too, I decided to include a post on eyepieces. The quality of the eyepiece on any scope is a major determining factor in what you see.
--Read more: http://televue.com/engine/page.asp?ID=139---
When using a microscope, what do the lenses do? When using a telescope, what do the lenses do? And for a set of binoculars, what do the lenses do? Think about these questions and jot down your ideas before continuing.
What do you already know about the eye? Eyepieces?
The title, WYSIWYG---What you see is what you get (Borrowed from computer jargon)---
in fact is:
What you see does depend on the quality of your eyepiece.
Compare what you can see in a child's microscope with the photos taken from light microscopes found in a children's or college biology text book. As a child, I wondered why I couldn't get my microscope focused like that. As a college teacher, I discovered that many students, without them knowing of my own experience, had similar experiences comparing what they saw as children with what the textbook manufacturers had printed ("as possible".) The photographers were using different lenses on their microscopes than those available on most children's--- or, even first-year college students' microscopes.
Whereas that difference, between what my microscope showed me and what the text pictures presented, led me to continue learning about microscopes, it led others to total frustration that had to be undone when they reached their "required" college science course(s). Because of this realization and because of a recent experience at Stellafane using each telescope's own lens and then using a new ocular lens from Televue on both home-made (by others) telescopes and fancy purchased telescopes, too, I decided to include a post on eyepieces. The quality of the eyepiece on any scope is a major determining factor in what you see.
--Read more: http://televue.com/engine/page.asp?ID=139---
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