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Unitron 4" Model 150, Sale or Trade Sold!

Price - $1,350.00

Ad Number: 144988

Posted: 08 Aug 2018

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This scope is an amalgam of pieces. It started with the finder scope, purchased at Stellafane MANY years ago. I then purchased the tube assembly and tube box at an auction. Miraculously I was able to purchase the correct model 150 mount from someone on the west coast. Finally I made the legs (Philippine mahogany) myself.

I constructed the tripod legs extra long (compared to the originals) so the eyepiece would be at a convenient height while pointed above 45 degrees. As a result, the mount head stands about 6 feet and the eyepiece around 4.5-5 feet. The slow motion cable was added by me and easily removed. There's no accessory tray. The legs have rubber feet rather than spikes.
Scope includes two lens covers (one with a hole, solar?), solar screens and rods, a Unihex, 3 Unitron eyepieces, Unitron porro prism, Unitron diagonal (unlabeled but clearly Unitron) and miscellaneous other tubes and adapters. The box for the tube is also included though it's in relatively poor condition.

The scope is unrestored. It's missing the hex nut that locks the altitude motion. Doesn't impede the operation and I have photos and am planning to machine one. One slotted lock screw for the solar screens rod is broken, also doesn't affect function. Lens is in very good condition with no blemishes. I did carefully disassemble and clean it (it needed it) and reassembled with correct orientations.
Link to dropbox with hi res photos. https://tinyurl.com/y92mbtbn

Not interested in shipping at this time. Scope is in Danbury, CT and available for inspection weeknights after 6 or weekends depending on availability.

Asking $1,350.
Possible trades considered: Questar 3.5(unitron+cash), 90-degree astronomy binoculars, Oberwerk 25/40x100, German Flak binoculars, or ???.


  • Condition good
  • Location Western CT

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