This is a Takahashi FC-100DZ refractor in pristine, like new condition.  Although this unit is about 10 years old, there isn't a mark anywhere on it.  The objective is whistle-clean, as is the 7.5x50 finder.  

This telescope is from the estate of Thomas Shea, user name "teashea" on Cloudy Nights.  Mr. Shea was known there for his extensive collection of more than a dozen Taks.  We've received ten of them, all in equally brand new, perfect, pristine condition:  

Here's his photo of his telescope room, showing most of them:  

He explained his lack of use of all of his scopes there:  

"I am much more a telescope collector than a telescope user. As with all my Takahashi telescopes, this system has been used for less than two hours - to test it when I first purchased it. Since then it has been sitting in my dedicated telescope room, with HEPA air filtration."

Everything we've seen and know about his scopes proves this to be absolutely true.  This is no different from a brand new scope.  This is a nice savings off of the new one, so get it while it's still here!  

Included Items:

• Takahashi FC-100DZ OTA (a $3096 value)
• Takahashi clamshell (a $200 value)
• Takahashi 7.5x50 finderscope (a $392 value) and bracket (a $103 value)
  
• Original Takahashi manual and certificate of inspection
  

This is nearly $3800 worth of gear for just $2500!

This scope is on display on our showroom floor.  The scope will ship in a padded tripod bag.  We have obtained suitable shipping boxes for this, and can ship it to you for a $99 shipping charge.   

The FC-100DZ is a fluorite doublet with a 100 mm aperture and an 800 mm focal length.  In this doublet design, Takahashi has paired the fluorite element with a low dispersion glass having a high refractive index.  This combination provides excellent optical performance across the entire visible spectrum with a Strehl ratio in excess of 97.6% across this range.  In addition, to satisfy the increasing demands of today's imaging system, this glass combination minimizes the blue halo sometimes present at shorter wavelengths. This halo intensity is reduced by about 50% when compared to the existing FC-100D.

The FC-100DZ is fully compatible with the accessories available used with the existing FC-100 telescopes, including the FC/FS Muli-flattener and the FC-35 0.66X Reducer. With FC-35 reducer, this telescope becomes an excellent imaging system, illuminating a full frame chip at f/5.3.

Spot Diagram for FC-100DZ with FC-35 0.66X Reducer

Spot Diagram for FC-100DZ with Multi-flattener 1.04X

Mechanically, the FC-100DZ has a tube diameter of 95 mm and a retractable dew shield. With the dew shield retracted and accessories removed, the total length is only 595 mm, easily carried on most commercial flights. The FC-100DZ utilizes the same focuser used on the FC-100DF and DL and weighs approximately 3.8 kg.