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12.5” f/6 Astrosystems dob with upgrades Sold!

Price - $1,500.00

Ad Number: 173944

Posted: 12 Jun 2019

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For sale is my 12.5” f/6 Astrosystems dobsonian. The Swayze mirror is excellent. On par with my Zambuto and Stevens mirrors. Secondary is from discovery/ostahowski and also excellent

balance is perfect: no altitude movement changing eyepieces from Plossl to hand grenade 30mm 82*

upgrades to telescope:

focuser moved to 90* to allow better access to the sky flat footed. I’m 5’11” and can view all but the last 10* without a step stool. With the standard 15* up focuser location I needed a step stool for viewing above 60* can also be used with left or right focuser locations

Red moonlight focuser and original Astrosystems focuser.

JMI NGC Max DSCs and encoders (not installed as I didn’t need them to view solar system objects)

Scope has been modified with wheels that remain on the scope and slide locks on the mirror box which allows the scope to be rolled out in seconds with no tools. Original wheelbarrow handles included as well.

Area across from focuser flocked with black velvet to maximize planetary contrast

There are many threads on cloudy nights extolling the benefits of longer focal ratio planetary scopes and many feel that 12.5” f/6 is the ultimate planetary scope. Coma is minimal and the 2.1” secondary mirror equates to a 16% central obstruction falling well under the magic 20% limit for maximum contrast. All that translates into: this telescope gives world class views.

Due to size and my my desire to make sure the new buyer understands all the nuances of this scope and is completely satisfied with the purchase, this is offered for pickup only in Denver Colorado


  • Condition good
  • Location Denver CO

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