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Old 07-08-2008, 01:10 AM
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AlexN
Widefield wuss

AlexN is offline
 
Join Date: Mar 2008
Location: Caboolture, Australia
Posts: 6,994
what did you use to wash the mirrors? any possibility its left some very fine residue on the mirrors?

If the secondary shadow is slightly off center, take a look down the aperture of the scope and see if the secondary is well centered in the tube. If not, adjust the spider vanes (via the 4 thumb screws on the outside of the tube, then re-collimate...

Is the blue flaring off to one side? or the whole way around?
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