From: Daniel Fundo 
To: Marco Miglionico 
CC: ATM Archives 
Reply-To: Daniel Fundo 


<<  Has anyone gone as thin as 0.2mm thickness (steel) for their spider
vanes? I am reluctant to use the wire spider idea for a planetary scope.  >>

Marco,  I don't know why you would be afraid to use wire.  I have
successfully used wire spiders on all of my telescopes since about 1972.  I
use stainless steel wire, 0.013 inch (0.33 mm) diameter with a breaking
strength of approximately 40 pounds.  I have tested this wire to 80-90
pounds several times before breaking it.  There are no spikes to be seen
except on the brightest stars at low powers.

*****-----
Dan F.
Secretary/MAS
Memphis, TN

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