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Motions of the Moon

by K.E. Chilton, F.R.A.S.

1. Daily apparent revolution:

Like all celestial bodies, the moon appears to revolve around the Earth, once every 24 hours. This is caused by the rotation of the Earth. However, the moon revolves eastward in its orbit, ie: in the same direction as the Earth. Therefore, it takes a little longer for the earth to catch up, lengthening the apparent revolution to 24h 50m.

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The Stellar Luminosity Function

Most text-books on Astronomy state that the sun is a middle-sized star. This may be true when one compares it to the relative sizes of super-giants and white dwarfs. But how does the sun compare with the majority of stars? To answer this, I decided to calculate the stellar luminosity function as well as I could, using only the limited facilities at my disposal, that is, a slide rule and the Observers' Handbook.

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Murphy Strikes Again

On the night of July 9,1972, I fell asleep in my tent under the starry skies of Les Méchins, Québec. Great expectations filled my soul, as,tomorrow, the shadow of the Moon would sweep down on me, creating a total solar eclipse. My plan was to provide television coverage, by means of video-tape, for the many people back home in Hamilton. Assured by my Technical Director, Al Bauld, that the equipment was in perfect order, slumber came easily.

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Observations of Asteroids

The date of this document is unknown.

Observations of Asteroids

by K.E. Chilton

The observation of asteroids can be a very enjoyable and challenging occupation for an amateur astronomer. To find and follow these tiny bodies as they gracefully move across the background of stars is no mean achievement.

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The Moon That Never Was (Maybe?)

Published in the October 1970 National Newsletter. [PDF]

The Moon that Never Was (Maybe?)

After reading about the “Planet That Never Was” in the last issue of the NEWSLETTER, I thought that our readers might be interested in a satellite which was photographed 13 times near the turn of the century but has never been seen since. This was Themis, a supposed tenth moon of Saturn.

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The Fixed Stars

The Fixed (?) Stars

At a recent astronomical seminar, I was reminded by a speaker that our term, the “fixed stars” is not really correct. Stars do move across the sky, their motion being a combination of two measurable quantities, "radial velocity”, or motion in the line of sight, and "proper motion", motion across the line of sight. These motions are extremely slow, although they can be measured with accurate astronomical instruments. To the unaided eye, however, the stars appear to be stationary, unless studied over a lengthy period of time.

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Andrew the Android

A science fiction story written by Ken Chilton, date unknown.

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Letter 19600626

This is a transcription of the letter:

IKW June 26 [1960]

Dear Ruth,

Here are the prints you selected from our Annual Meeting collection. I relied on the list of numbers Mr. MacLennan gave me and hope I haven't made any mistakes. Also enclosed is [a] duplicate of a slide of Dr. McKellar, taken by Constantine [Papacosmos], which we thought was exceptionally good.

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Saskatoon 2012 Feb

In This Issue:

Membership Information / Bottle Drive / Officers of the Centre 2
U of S Observatory Hours / Light Pollution Abatement Website 2
Calendar of Events / Meeting Announcement 3
President’ Message – Jeff Swick 4
Kathryn 2011 Story!!!! – Kathryn Gray 4
Dark Sky Lighting Monthly, Part II – by Rick Huziak 5
Meet Dick Kirk, Our New Member and Astrophotographer 5
RASC Observing Lists Compared – by Tenho Tuomi 7
The Planets this Month – Murray Paulson 9
Observing Clubs and Certificates 10

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Saskatoon 2012 Jan

In This Issue:

Membership Information / Bottle Drive / Officers of the Centre 2
U of S Observatory Hours / Light Pollution Abatement Website 2
Calendar of Events / Meeting Announcement 3
2012 Message from the President – Jeff Swick 4
Norma’s Fireball at Sleaford – Norma Jensen 4
Lunar Eclipse 5
Youth in Astronomy (Eclipse) – Student work from ÉCF 5
Observing the Observers: Sleaford Open House – Bernice Friesen 7
Message from the Editor – Kathleen Houston 8
The Planets this Month – Murray Paulson 9

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