ATM A few questions

["Asaf S.-T." <asaf@maxnm.com>]

I just got my 1" diagonal, and before I continue working, I have a few 
questions:

-Is there a company that sells two-vanes spiders for 1" diagonals?

-What sizes of eyepieces match for a 6" f/8 telescope, with a 1" 
diagonal, 1.25" low-profile focuser, and a distance of 5.5" focal plane 
from the diagonal?

-What filters should I buy first for my telescopes? Is it worth buying a 
Nebulae Filter?

Thanks, Asaf.

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Asaf Shtull-Trauring, Amateur Astronomer

http://www.maxnm.com/asaf/