Edited by apfever, 16 November 2017 - 04:14 PM.
Edmund Palomar JR,, Deluxe Space Conquerer, 4.25"
Posted 16 November 2017 - 10:43 AM
- wrnchhead likes this
Posted 16 November 2017 - 03:20 PM
I have to get pictures of mine up but the weather is not permitting. Mine is now complete other than a clockdrive I am waiting on. It now has a 3’ pier of 3/8” thick (wall thickess) 6061-T6 aluminum. Mine is the earliest red design. It has the original single-stalk diagonal holder, the original metal (beige-painted) r&p focuser, the original 6x30 Towa finder with two brackets (painted red), and the original aluminum tube with no endcaps (and painted red). I think it must be from the very first year that Edmund started producing red-tubed telescopes.
- clamchip likes this
Posted 16 November 2017 - 10:12 PM
Here's mine, say hello to Gort.
I named him Gort because I tried to drill a hole in him and the drill bit just bounced off.
He's made out of super strong paper thin Titanium.
Edmund red tube focuser with the felt guides, sweet, butter sweet.
Hypotenuse silvered prism Edmund diagonal. Single stalk Edmund diagonal holder for minimal diffraction.
Red tube 1/8 wave primary. Edmund revolutionary clipless steel cell with the same expansion
co-efficient of Pyrex.
Edited by actionhac, 16 November 2017 - 10:17 PM.
- Terra Nova, rcwolpert, TSSClay and 1 other like this
Posted 16 November 2017 - 11:57 PM
Titanium tube, lol, I love it. I always did like the focusers. What is the primary backing plate? Pyrex and aluminum aren't close for the same CTE.
- clamchip and Terra Nova like this
Posted 17 November 2017 - 12:16 AM
It's Steel, and the mirror is stuck to it with double stick foam tape, very high-tech for the 1950's.
That's the way it was, at Edmund Scientific.
Edited by actionhac, 17 November 2017 - 12:20 AM.
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Posted 17 November 2017 - 07:50 AM
When Jupiter is available at a decent hour (read: cleared the trees before midnight) next year, I am going to set up my two red Edmunds (the 4” F15 Red Racer and his 4.25” F10 Pal) up together for a joint session!
- clamchip likes this
Posted 17 November 2017 - 08:06 AM
Ahhh so that's the mirror cell. Mine has some corrosion (nothing too bad) on the mount points, that doesn't seem so scary.