Thread: Duncan mask
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Old 08-03-2017, 11:38 AM
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billdan (Bill)
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Join Date: Mar 2012
Location: Narangba, SE QLD
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Hi Brenton,

I have done collimation with a Hartmann mask for my Newt, but found a barlow laser method easier and more accurate.

I do have this pdf on the Duncan mask though.
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File Type: pdf collimation_duncan mask.pdf (45.5 KB, 261 views)
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