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Sketches

Rather large observatory and 42" dob


Viking

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What do you mean by 'How big is it?' It's a 42" scope according to the title of this thread! If you watch the show, carefully, you'd see the design drawing for it, saying that it's a 42 F/4. The mount would appear to be over 54" high and, I think, it's 155" long!

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Just imagine the cost that a proper filter would be to view the Sun!!!

Could I have a 42" filter please, yes special order will be OK. How much, £100,000!!!

John

But think what view you would get of the sun.

You would be so close you would get burnt LOL

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Just imagine the cost that a proper filter would be to view the Sun!!!

Could I have a 42" filter please, yes special order will be OK. How much, £100,000!!!

John

I'm thinking full aperture etalon here...

lol...

I think you'd need a "root 200" design on that one..

His secondary had a scratch, and I would not want to collimate it...specially as it doesn't track..

:crybaby: :crybaby: :crybaby: :crybaby:

(I'll get me coat!)

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