I am no expert but my scope looked original in orientation with the engraved number readable in the 3 o'clock position which also included a makers marker pen colour on the ground edge in the same position. Blackened cork packers and back folded paper packers where cork would be too thin at 12, 3, 6 and 9. My scope was also owned before me by a physicist and I think it would be correct.
So I suppose if the serial number is not reversed and is close to 3 it is original . I also understand there is a mark under the secondary cover pointing in the same horizontal direction as celestron parts are all matched but I did not look for mine. I was nervous enough cleaning the glass and puffing out the tiny bits of dust.
From diagrams it would seem the lense shape of the corrector is on the inside but it is not visible by eye to me and I would not touch it with any measuring device I own.
Quote:
Originally Posted by mldee
I have seen many comments on how to install the corrector plate with the engraved number at (I think) the 3 oclock position.
Should the plate be installed with the engraving on the inner or outer surface of the plate? ie, which is the correct " front side" of the corrector.
No doubt the plate on my 20-year old black C8 has been removed countless times, just want to ensure I put it back correctly next time
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