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the dobsoinan brigade


cosmic dave
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Hi Dave,

A new scope is a wonderous thing! Which one have you invested in???

Cheers

I bought a 8 inch skywatcher a bit back. Lovely planetary views with it :)

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  • 1 month later...

If you focus on a bright star and then slightly defocus one way - then the other way - you should see misty concentric circles in both directions. If the circles aren't concentric then you need to collimate the scope. :)


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If you focus on a bright star and then slightly defocus one way - then the other way - you should see misty concentric circles in both directions. If the circles aren't concentric then you need to collimate the scope. :)

I checked for that when looking at a few stars and it all seemed good :)

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