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huge frac!!


nightfisher

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.... It's probably an achromatic lens given the f15 long focal length?

Almost certainly.

Having struggled to find a really stable mount for a 6" F/8 achromat I can appreciate just how solidly an F/15 of the same aperture is going to need to be mounted - I reckon 70+kg of that weight will be the mount.

It will be interesting to see what it goes for though ;)

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He does seem to have sold plenty of astro scopes and bits in the past. Would have preferred to have seen a few more details on the objective etc given that he has some knowledge of astronomy - maybe the silence tells you all that you need to know.

James

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