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Originally Posted by JohnH
Hmm... the VC200L has an industrial strength spider on the front of it, it is strong and so holds collimation well so I am told (and is a good focus aid!), but Tony has a c11 and an ed80 I think he must be faking it.....!
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John,
Tony said he is using fishing lines for the soft diffraction spikes.
Regards,
Humayun