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#1
December 3rd 08, 05:21 AM
posted to alt.binaries.pictures.astro
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ASTRO: B&C 24 test photo
Grabbed this duing the summer on our Boller Chivens\
24" at Pal-Dows. (Canon 350). Can anyone hazard a guess what is going on with the triangular star patterns? We have lazar collimated the scope three times and cant get rid of the pattern. Thanks, Jerry 
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#2
December 3rd 08, 08:16 AM
posted to alt.binaries.pictures.astro
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ASTRO: B&C 24 test photo
jerry warner wrote: Grabbed this duing the summer on our Boller Chivens\ 24" at Pal-Dows. (Canon 350). Can anyone hazard a guess what is going on with the triangular star patterns? We have lazar collimated the scope three times and cant get rid of the pattern. Thanks, Jerry ------------------------------------------------------------------------ When I've seen such stars it has always been due to a pinched mirror. Sounds like some clips on the primary or secondary are too tight. Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh".
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#3
December 4th 08, 04:49 AM
posted to alt.binaries.pictures.astro
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ASTRO: B&C 24 test photo
Thats what I thought. My guess is secondary.
Thanks Rick. Jerry Rick Johnson wrote: jerry warner wrote: Grabbed this duing the summer on our Boller Chivens\ 24" at Pal-Dows. (Canon 350). Can anyone hazard a guess what is going on with the triangular star patterns? We have lazar collimated the scope three times and cant get rid of the pattern. Thanks, Jerry ------------------------------------------------------------------------ When I've seen such stars it has always been due to a pinched mirror. Sounds like some clips on the primary or secondary are too tight. Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh".
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