WyoRock focusers

Omaroo (Chris Malikoff) · #1 01-10-2007, 08:16 AM

FYI - I was just looking around for long-travel crayford-style focuser for a refractor I'm going to build and came across these billet aluminium focusers out of the USA. They look very nice and are reasonably priced. Best of all they do a refractor version that has 4" or travel - nice! I have not seen them mentioned on IIS before - hence the post.

http://home.comcast.net/~wyorock/wyorock.html

Cheers
Chris

Astroman (Andrew Wall) · #2 01-10-2007, 08:27 AM

"Billet machined from 6061 T 6 aircraft quality aluminum"

I thought Aircraft grade was 7075?

Still a very nice set of focusers there, nicely machined.

Omaroo (Chris Malikoff) · #3 01-10-2007, 08:42 AM

7075 has a higher tensile strength apparently, but is more prone to cracking than 6061, which is more flexible. 6061 is also meant to be more corrosion resistant I believe.

Dunno!

Garyh · #4 01-10-2007, 11:07 AM

yeap I have one of these on my Newt..
very well made and recommended!! I only wished it had 10:1 fine focus as well. Takes my 300D with no image shift or slop!!

cheers

[1ponders] (Paul) · #5 01-10-2007, 11:16 AM

Looks very nice.

Can they get around not enought in travel when you have focal reducers attached to your refractor