[AZ-Observing] Re: The Orion 120mm ED Refractor
- From: "Stars" <stars@xxxxxxxxxxx>
- To: <az-observing@xxxxxxxxxxxxx>
- Date: Mon, 7 Aug 2006 22:58:15 -0700
It's description below would indicate a double, not triple lens combination.
"Superb apochromatic optics set the 120ED apart. The 900mm focal length
(f/7.5) is great for planetary work and fast enough for faint galaxies and
nebulas. FPL-53 extra-low dispersion (ED) glass in one of the two objective
lens elements and multi-coating on all air-to-glass surfaces means light
passes to the eyepiece or camera without color fringing. Besides providing
more light-grasp for deep-sky imaging &emdash 43% more than a 100mm scope
&emdash the optics easily handle high magnification"
If I remember correctly this was already pointed out. Several of the
members have the 100mm ED and are very pleased with it. If it is as good as
that telescope, it might be worth the cost. I however would spend $395.00
more and get the Stellarvue SV4 Triplet, $395 dollars more would be a better
purchase in my option, even though it is only 100mm. The Stellavue quality
is super. I have there 80mm APO triplet and could not be happier with it.
Thomas Hilton
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