>
>>
>>> Can anyone recommend one for occasional use ?
>>>
>>
>> I have a variable ND filter for 1.25" telescope eyepieces. It
>> consists of a pair of linear polarisers, one fixed and the other
>> rotated. Works damned well, almost darkening the moon completely.
>>
>> Which reminds me: Things are always darkest just before they turn
>> pitch black.
>>
>
>As Ken mentioned, the problem with polarizers is the highly variable
>effect on wide angle views... something your telescope doesn't have to
>worry about. :-)
>
Yes, I saw his post on that. Sometime soon I'm going to see how well a
pair of Hoya or Tiffen linear polarisers will work.
Chris
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