Thread: PST rust??
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Old 18-11-2017, 12:51 PM
AndrewJ
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AndrewJ is offline
 
Join Date: Mar 2006
Location: Melbourne
Posts: 1,905
PST rust??

Gday All
I have a new model PST ( with the blue objective bought 2007 ) but on using it today after a while in storage,
a) the rubber tuning ring fell off :-(
b) It seemed a lot duller than i remember
On googling around, i found several posts that indicate Meade merely moved the ITF coatings from the front objective to a small unit in the base of the EP barrel, and that this can also rust, but you cant see it .
On looking in mine at a lowish angle, best i can see is my unit looks like it has several concentric circular rings, vs complete crud or a single dark region coming in from the edges.
Not sure if this is an interference effect or real as i can only get a grazing angle sideways.
Soooo i tried to remove the EP barrel but it wont budge, even with a rubber strap wrench
Is there a trick to getting it loose without damage???
Secondly, i tried to remove the prism to get a better view but on screwing it up till it almost touches, it is still engaged.
I couldnt see anywhere ( yet ) that explains how it comes off, as if i can do that, i may get a better look at the lower ITF without having to remove the barrel.

Andrew
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