Quote:
Originally Posted by Robert9
David,
I agree with Andrew. For the few dollars you will need to spend, after apparently spending quite a bit on the scope already, the peace of mind will be well worth it. I certainly would not want to leave the filings in there for fear that they might get caught in the focussing mechanism. Have it done professionally and sleep well.
Robert
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Robert, I steeled myself and removed the corrector plate. I took many precautions. Once the corrector plate was off, I tilted the OTA slightly downwards then proceed to vacuum out the aluminium debris. Again with utmost care and observing the taped markings I made prior to removal, placed the collector plate back onto the OTA.
From my yard I have a horizontal view of some 4km. Observing with the corrector plate returned, focus was as sharp as a tack over the entire 4km. Given that the air was unstable I could push focus out beyond 4km.
It seems the mission was a success! Many thanks for the guidance it's much appreciated I obviously hadn't removed a corrector plate before.
If the focus is sharp to 4km, would this mean collimation is still OK? In any case if the clouds clear tonight I am going to test collimation on some stars.