Advertising Over the Years

Ads in Sky and Telescope
July 1975	September 1975	March until November, 1976	Spring 1977	Summer 1977
Winter 1977	April until September, 1978	December 1978 until July 1979	October 1979 until September 1982	December 1981
September 1983	Summer 1984	June 1985 until June 1986	August 1986 until April 1987	June 1987 until April 1988
June 1988 until April, 1989	May, November, 1989 March, 1990	July, September,1989	January, May, June, 1990	August 1990 until December 1991
February 1992 until May 1995	May 1992 until March 1993	April 1996	June 1996 until September 2000	April 1998 until June 1999
July 1999	August 1999 until January 2000	Spring 2000	October 2000

Ads in Astronomy Magazine
July 1985 until May 1986	July 1986	September 1986 until May 1987	April 1987	Summer 1987
August, October, December, 1989	February, July, 1990	April 1990	September 1990	October 1990 until August, 1992
May 1992	June 1993 until August 1994	April 1998 until June 1999	July 1999	August 1999 until May, 2000
April 1996 until September 2000	October 2000

Ads in The Photonics Buyers' Guide

1988-1990

Pricing in ads is not current and is no longer honored. Some products may no longer be produced or offered for sale.
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