Re: Planetary Eyepieces
- From: "Ed T" <reply@xxxxxxxxxxxx>
- Date: Tue, 02 May 2006 17:11:39 GMT
"Chuck Taylor" <invalid@xxxxxxxxxxxx> wrote in message
news:_tadndwAq-zmXMvZRVn-tw@xxxxxxxxxxxxxxxx
Anybody here compare the following?
Zeiss .965 orthos
AP Super Planetary
Pentax Orthos
I'm looking for a 4 and 5mm and wondering what to go for to upgrade from
UO orthos.
Chuck,
I haven't tried the Zeiss .965" eyepieces. In general, they are reported to
be inferior to the Zeiss 1.25" oculars and to the Pentax orthos
(conventional wisdom, take it for what its worth). There isn't a 5mm Zeiss
ortho, so afficionados slide their Zeiss 10mm into their Zeiss barlow ;^)
The AP eyepieces are very close to the Pentax smc orthos in performance. I
can not tell you which is superior, too close to call under my midwestern
skies. Another first rate 5mm is the newer Pentax XO, as good as the Pentax
ortho and SPL. If you want a 4mm Pentax, try the 3.8mm Pentax XP. Great
eyepiece but forget about seeing the field stop, the eye relief is tight.
The TMB monocentrics are strong contenders, too. And they're the cheapest
of the bunch right now. The 30 degree field is tough for undriven mounts
and sometimes will hide a moon that would be visible in a 40-45 degree
field. The 4mm has a very tiny eyelens, looks like a bugger to clean.
Ed T.
.
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