In this paper, a Ku-band corrugated feed horn antenna for a Cassegrain reflector is designed and optimized. The horn dimension parameters are optimized so that it has a radiation pattern with a ...

Holiday shopping season has really kicked into gear, and if you have a stargazing fan on your gift list, you have a lot of choices. I think the best thing to do is buy online from one of the major ...

If this is the easy part of making a complete reflector telescope from a single piece of glass, we can’t wait to get a load of the hard part! A little backstory may be in order for those who don’t ...

This review, “Konus’s new Mak-Cass,” appeared in the April 2004 issue of Astronomy magazine. In October 2003, I had the opportunity to review Konus U.S.A. Corp.’s new 5.1-inch (130mm) f/15.4 Maksutov ...

Dual reflector antennas are considered as pencil beam antennas that can produce radiation identical to searchlight. Cassegrain Reflector Antenna Design consists of various effects caused by blockage ...

MELBOURNE OBSERVATORY.—The Annual Report of this Observatory, dated August 14, 1887, states that the buildings and equipment of the Observatory were in good condition with the exception of the mirrors ...