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Old 29-12-2018, 06:37 PM
Startrek (Martin)
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Startrek is offline
 
Join Date: Dec 2017
Location: Sydney and South Coast NSW
Posts: 6,054
Hi Nick
I love diffraction spikes in my images, I do t want to eliminate them
I merely pointed out in my original post that one axis had a single spike that morphed into a slight dual spike about half way out ( I had a hunch it was to do with the spider vanes not being geometrical at 90 degrees to each other ie a true cross hair or bulls eye target a perfect right angles to each other
I have moved the primary up the tube already ( about 5mm ) but that was to give me more travel in my focus on the DSLR which is working really well when I frame and focus my objects
The primary clamps on these GSO 6” newts are quite small , only a 3 to 4 mm overhang on the mirror edge
Cheers
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