I’ve used Gary’s 14″ Meade for another 7 years and only this year was brave enough to try Ron’s method of Sellotape. It still left a few marks and checking Ron’s article again he used a standard window cleaner but make sure that it doesn’t contain any vinegar. Mine didn’t and the plate came up sparkling. Not sure it really made any difference to the images but at least I’m happier knowing that it must be the sky conditions and not my telescope if things are not as good as I feel they should be.
Cheers,
Roger