Jump to content


Spider/3.1 secondary from 18" Obsession Sold!

Price - $125.00

Ad Number: 159870

Posted: 19 Jan 2019

Please sign in to message advertiser

Very clean original equipment spider and secondary assembly, incl 3.1 inch mirror and dew heater, from an 18" Obsession Classic.

- The vanes of the spider are 18 7/8" long (just shy the 19" inside diameter of this specific upper assembly... as yours would have to be to properly tension the spider... caution please...)

- The vanes taper from 2.25 inches at the center to .886 inches at the vane tip, and measure.023" thick on my calipers

- The center post is 2.25" with passage for the single 3/8" secondary bolt

- The 3.1" secondary is pristine but *is* center spotted.

$125 by PayPal and this includes secure UPS shipping anywhere in the Continental US.


  • Condition Used
  • Location Colorado

Advertiser Info

Powered by Classifieds

Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics