A newcomer to the market quickly delivers with a very wide-field-of-view eyepiece.

By Dennis di Cicco

NO PRODUCT in recent memory has received more universal acclaim from the observing community than Tele Vue's 13-mm Ethos eyepiece introduced in mid-2007 - the first astronomical eyepiece offering a 100-degree apparent field of view. With such rave reviews, it's not surprising that a year and a half later there are more than a dozen 100-degree eyepieces on the market. What is surprising, however, is that there are now four companies offering them. Newcomer Explore Scientific was the next company to jump on the bandwagon.

Read the rest of this article in the May/June issue of Australian Sky & Telescope.