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Showing results for tags 'grinding'.
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Hi Everyone, I am thinking of re-starting mirror grinding at home. I used to grind by hand and in this method, when we use the 1/3rd off-centre strokes for hogging out the sagitta, the upper glass becomes concave and would be polished into a mirror. However, this time I'd like to build a Mirror-O-Matic or something similar and do not understand that if the tool is on top, how will the bottom glass become concave? Or am I mistaken? Please advice.
Hi folks, Having setup my kit last night to image Orion I found the Heq5 mount making a hard clicking or grinding noise depending slew speed only in Declination and only when pointing west. Tried with handset as well as eqmod, the mounts power is supplied with a mains power pack. I don't get as much time to image as I'd like and often image object in the east as they rise. Tried slight adjustment of Dec but still happens. Throwing it out for suggestions. Thanks Campbell