Tuesday, September 3, 1974
1
Amateur astronomers devise own telescopes
By TOM BILLAM
Reporter
Since the beginning of time, men have sought answers to the mysteries of nature.
Modern Galilee use sophisticated versions of the basic reflector telescope to watch and chart the stars scientifically, including astronomers make their own telescopes.
Among them are several University of Kansas students, members of the Amateur Telescope Makers of Lawrence, a sub-group of the Astronomy Associates of Lawrence (AAL). The students are making Newtonian telescopes, a type of telescope that uses a parabolic mirror to focus beams of light from stars onto a diagonal mirror near an eyepiece.
Bill Dale, AAL vice president is making a handle-on scene parabolic mirror and telescope of length 48.38 inches.
Grinding of a lens or mirror consists of using carbondurant as grit between a "tool" and the mirror blank. Ceramics or plate glass is used as the grinding tool.
Dale said it was possible to construct the whole telescope at home except for having the parabolic glass coated with a reflecting surface.
The mirror blank, which usually is made of pyrex glass, is rubbed back and forth over the carboundum on the plate glass, then sanded to refine concave with the tool beconve converts.
Dale said it would take 20 to 24 hours to
Dykes...
From Page One
The legislators who serve on the committee also make up what is known as the 1202 Commission for Kansas. Section 1202 of the federal Higher Education Act of 1965 created a master planning commission for postsecondary education in each state.
Kansas is the only state whose 1292 Commission comprises the members of a legislative committee charged with planning postsecondary education.
That will save time because the people who draw up proposed changes in the state's educational system can immediately respond to proposals to the legislature, Conard said.
Conard said having the same members on both the legislative committee and the 1902 Constitution would be a good thing.
"I don't think they're going to have any dramatic proposals to present in January of 1975, but they have the capability of entertaining something to the legislature," he said.
One problem with postsecondary education in Kansas, Budd said, is that community colleges duplicate the programs of state colleges.
George Budd, president of the Kansas has responded to the legislative committee.
The solution is to make community part of the system of post-secondary education, he said.
grind, "figure" and polish the mirror into shane.
Grinding makes the mirror spherically concave. Dale said. It takes a process called figuring to produce the parabolic concavity necessary for proper focusing.
Dale said it was possible to polish mirrors
it said it was possible to one-half-one-
hundredth of a mirror.
The fine quality possible in homemade mirrors is one reason Dale decided to build a telescope, he said. Greater flexibility in mounts and adjustments is also possible when you design your own telescope, he said.
A preconstructed telescope of comparable quality costs about $200, while self-built telescopes range in cost from about $100 un. he said.
"The amount of work spent on the tube and the mounts depends on individual taste," he said, "but making a mirror costs about $20."
The telescope makers organized through the AAL, Dale said. Members include junior high and high school students, KU students in physics and astronomy, middle-aged people and one man who has been building telescopes for more than 20 years, Dale said.
The AAL has open house every Friday evening at the observatory in Lindley Hall, AL president Ron Oliver said, and anyone interested can look or look at the stars, weather permitting.
The group has purchased grinding materials in bulk, but each member must purchase his mirror blank himself. Mirror blanks are available from optical glass companies throughout the country, Dale said.
Oliver and Dale are offering telescopemaking as a class in the Free University this semester with meetings at 7:30 p.m. The Institute for Methodist Church at 4th and Elm streets.
On Campus
Roy here tomorrow
Bill Roy will hold a press conference tomorrow, at 3 p.m. in South Park Recreation Center. A public reception will be at 3:30.
A public reception will also be held in the Lewis Hall lobby at 6 p.m. tomorrow.
Prof at Sierra Club
David Dary, associate professor of journalism and acting director of University Relations, will speak about his new book. "The Buffalo Book," at 7:30 tonight at the Sierra Club meeting in South Park Recreation Center.
The book is the November alternate selection for the Book of the Month Club and the September selection of the Natural Science Book Club.
Also on campus
Starting tomorrow, parking lot Zone S located south of Oread Hall, will be closed for four weeks while it is being reused. Person who usually uses it may return to the parking lot.
Tonight, honorary dance fraternity Tau Sigma will meet at 6:30 in 229 and KU Republican Club will meet at 7:30 in the Jayhawk room of the L. Temple.
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