Celestron Omni 12mm Eyepiece Reviews
Product Type: Celestron telescopes
Description:Manufacturer: Celestron / Size: 12mm
Newest Review: ... good eyepiece should transmit as much light into the observers eye as possible. Celestron have used their renowned lens ... more
Customer Celestron Omni 12mm Eyepiece Reviews (1)
by - written on 08/12/10 (Very useful, 32 readings)
Celestron's basic Plossl comes in the shape of the Omni. It uses 4 lenses (or elements as they're sometimes known) in a symmetrical layout, that is to say two groups of two lenses spaced closely together. This is a classic Plossl design that has pluses and weaknesses. On the plus side the use of only 4 elements makes images crisp and clear whilst keeping the price of the eyepiece down. On the down side this configuration of lenses yields only a 52 degree field of view. The 52 degree field would matter more on a higher focal length but at 12mm objects are small enough to be held within the field longer than a few moments. As this is a medium powered ... Read the complete review
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