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IT'S JUST A COMMONPLACE that the fellow who can always have whatever he wants by writing a check for..
144.00 Ex Tax: 144.00
THE SIXTH Annual Convention of amateur telescope enthusiasts will be held at Stellafane, near Spring..
144.00 Ex Tax: 144.00
UNCOMMON OPTICAL GRINDING and polishing materials such as boron carbide, sapphire dust, titanium oxi..
144.00 Ex Tax: 144.00
The first concerns a telescope made by a Benedictine nun, Sister Cornelia of Mount Saint Mary's Conv..
144.00 Ex Tax: 144.00
ALUMINIZING one's own telescope mirrors is probably uneconomical, considering the time, materials an..
144.00 Ex Tax: 144.00
LAST MONTH in this department Professor Henry L. Yeagley, of the Department of Physics at the Pennsy..
144.00 Ex Tax: 144.00
BICYCLES having now become once more fashionable, the city or town owner of a richest-field telescop..
144.00 Ex Tax: 144.00
A FEW WEEKS ago one of the largest and most carefully made amateur astronomical observatories went i..
144.00 Ex Tax: 144.00
HERE IS interesting news. Aluminizing brought one step nearer reach of the average amateur and at le..
144.00 Ex Tax: 144.00
AMATEUR telescope makers and astronomers within a radius of one light-year of Stellafane, near Sprin..
144.00 Ex Tax: 144.00
IN THIS DEPARTMENT in the October and November numbers Patrick A. Driscoll described the design and ..
144.00 Ex Tax: 144.00
WHICH OPTICAL SHOP methods are best-professional or amateur?Neither. In each the needs are different..
144.00 Ex Tax: 144.00
