collimation help
Got my new dob today. Am trying to collimate it
From step 1 it all went wrong
Look throught the eyepiece holder and ensure the secondary mirror is round - whoops mine is oval - instructions say to adjust the centre screw if this is the case - tried that, very tight, need to loosen the three secondary screws, did that, rotated centre mirror.
moved primary screws until centre dot in crosshairs - done.
Hang on - secondary mirror is vertically (not at 45 degrees to tube) miss- alligned - moved two of the three center screws to get that back in place.
centre dot not in crosshairs - fiddle fruitlessly - one of the screws is holding the cell tight to the tube, fix that, fiddle again, back in crosshairs
about to take it out, when i realise the secondary is wayyyy off on both axes.
throw screwdriver at wall, write a rant on forum...
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