Edmund Scientific Space Conqueror
Posted 18 March 2013 - 01:17 AM
It looks it:tube outside well rust-spotted,definitely must sand and repaint.. Debating colors: a creamy white similar to original ,or light green or blue,or bright red like later ones.
Mirror had thick layer of crud so gave it warm bath,and then pure alcohol and tissue treatment.Surprisingly bright with some pinholes,scratches, and a few small uncoated spots.
Diagonal is prism with front-surface coating,single-stalk.
12.5 OR 1.25" ocular in focuser.(also dirty).
Finder (6x) optics filthy but better now.Crosshair gone.
A few sheets of sensible instructions including one for the Herschel wedge (seller couldn't find the wedge).
Equatorial mount in good shape(not motorized)except new paint won't hurt!No tube clamp,just mounts by two bolts on the bottom of the tube.
Posted 18 March 2013 - 08:33 AM
Posted 18 March 2013 - 12:08 PM
Yes. Seller said he got it from a friend long ago.Original owner is now a bigwig at NASA.Perhaps my expectations were too high but when I saw the crud-covered mirrors and the extensive rust spots I very nearly left without it.
It strikes me that this was a fairly popular and expensive 4" f10 reflector in its day.The $84 original price (from a CN review) was a LOT of money back then.But it is really a very basic design .Today a 3" f10 reflector is about the same in dollars but hardly a budget-buster for anyone.We really have it good today except for all the un-needed lights.
Posted 18 March 2013 - 12:51 PM
I just looked in my pdf version of the mid 1960s Edmund Scientific catalog and it lists the scope (Deluxe Space Conquerer) at $79.50 including the pedestal eq. mount mount with setting circles, two 1 1/4 inch Kellner eyepieces (1 inch f.l. and 1/2 inch f.l.), a 2X barlow lens (I remember it was metal, black anodized, with a slip fit), a cardboard planisphere, and the paperback Edmund classic "How to Use Your Telescope" (I wound up with that book and still have it). I also remember that it had a very nice finder for the times.
Posted 18 March 2013 - 04:11 PM
Posted 18 March 2013 - 08:00 PM
That finder is most likely a 6x23mm, made for Edmund by Towa. If you need some really fine wire to replace the crosshairs, I've got plenty on hand; PM me and I'll send you some.
Posted 18 March 2013 - 10:48 PM
Posted 18 March 2013 - 11:39 PM
I bought mine from a friend in 1967... it was (and still is) optically superb. Spent many a great night observing from my backyard with the 4.25" on a pipe pier provided by my Dad.
You'll have fun overhauling it...and observing with it!
Posted 19 March 2013 - 12:35 AM
OK,I was in error...mistaken...,well wrong!Began sanding the rust and something wasn't right.But the appearance improved dramatically.Not finished,had to leave for work.
The tube is aluminum (tested with a magnet) and it wasn't rust but rust-color mold or fungus!!!! Still will need repainting because there are a number of small places where the paint is chipped to bare metal.
FIRST LIGHT at 1am. : Moon looks good in the 12.5 OR which is the only ocular in this deal.Brief look at stars in Leo and Corvus,they seem sharp.Mount action is smooth which is what decided me in getting it.Pedestal mount is also much less shaky than many tripods although I still kick the extensions.
Now that I know more about collimating,etc. and am no longer afraid to take these simpler scopes apart, it happens that there is a 6" Space Conqueror(a Goodwill buy of a couple years past) stored amongst my parts and projects that is going to get the same attention.And the 6" came with several Edscorp oculars with focal lengths marked in inches!Not sure if the 6" is f8 or f10 without measuring.