From: John Murray 
To: Amateur Telescope Makers 
Reply-To: John Murray 


Morning All,
        I noticed something this morning which seems a bit odd. I've done a few
sets now of the k/edge test and generally I notice after the first set that
I get tired? or whatever and am unable to make decent judgements as the
knife edge is moving and the zones are nulling. This morning I was quite
tired and weary after a 12 hr night shift and yet I was able to do two
tests straight off with less variation in the readings. It also seemed
easier to pick up the nulling in the zones. Perhaps the secret with this
test is to be really knackered when doing it! Is this a good way or should
I just put the readings down to a fluke. How do others find it?

Cheers

John Murray
Whyalla
South Australia
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