Re: [ATM] Refractor baffling

[Nils Olof Carlin <nilsolof.carlin@telia.com>]

>>Now, I can do it!

Just do it...

But if you want to baffle a Newtonian, Bob's rules do not apply at 
all. Mainly because  in a reflector, the baffles are seen from their 
shadowed sides, but in the Newtonian, from their lit sides.

And you might save a baffle or two: 

Draw first baffle with Bob's rule. This done, draw a line from the 
opposite side of the objective to the edge of the baffle and past it to 
the tube wall. The endpoint of this line is used instead of the base of 
the first baffle to position the next baffle - the part of the tube 
between this endpoint and the first baffle is in shadow, anyway, and 
needs no baffling.

Nils Olof
----
> Simple.  Draw a line from the edge of the objective to the
> focuser on the same side on a plan of the scope.  Then follow the
> rules for plotting a Newtonian scope baffles using that line as
> the limit for incursion of the baffle to the light path.  Draw a
> line from the opposite side of the focuser (input end of the
> tube) to the objective and where the limit line and the crossing
> line cross is where the first baffle goes.  From there, the base
> of each baffle is used as the end point for the crossing line
> from the focuser to determine the next location.

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