Quote:
Originally Posted by MattT
Hi JC,
Love to hear how the build goes. What are you using as a tube, focuser etc
I'm still thinking about doing my own 6" f12 DIY is about half the price of an OTA from Istar but 10X the hassle so interested in yours ....best of luck .
Matt
|
Hey Matt;
Yeah I bought a S/H 2 inch Skywatcher focuser here in the classified section. Im using 100mm (97inside) diameter ally pipe, slightly more wall thickness than standard 4 inch irrigation pipe. I also picked up an old aluminium fire extinguisher about 8mm wall thickness X about 118 outside diameter pipe, that a freind is machining up for me. Ive had to include an extra 70mm length @ 103mm to get the most out of the 108mm glass before the light reaches the 97mm tube. Once in the lens cell the glass will be reduced to 103mm.
I operate plant in landfill and work at a couple of different sites so have access to purchase materials at scrap value, which has been helpful here..
So anyway the design Im going with is for a non adjustable lens cell, just applying the KISS principle with this being a first ( and maybe last
) attempt n all.
Cheers