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Home > Classifieds > Astromart Classifieds > Telescope - Reflectors > Classified #285995

For Sale: 8" f/6 Discovery dob-PYREX, Crayford, SOLD! [SOLD]

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Excellent condition. Superb views. I actually sold my 7" Starmaster at one point because of the quality of this 8".

I bought it 2 summers ago. It comes with several Discovery upgrades to their standard dob, in particular a Pyrex mirror with enhanced coatings and a 2"/1.25" JMI Crayford focuser. (See other extras below.) I'm selling it because I don’t need two dobs of similar sizes (7" and 8"). While I prefer the Starmaster's ergonomics, the 8” gives brighter views, and often better ones.

Why gamble on the optics in a new dob? Plus, you just won't find regular 8" dobs being sold with a Pyrex mirror, a Crayford focuser, and the rest of these features! Here's the run down.

ADVANTAGES over standard 8” dobs:

1. PYREX mirror. Helps viewing in cold. Can give good images faster than plate glass.

2. High quality Discovery mirror. Wonderful views of DSOs and planets. (My best views of Mars during last summer's opposition were through this scope.)

3. Enhanced mirror coatings. Gives brighter images than standard mirror coatings.

4. 2"/1.25” Crayford focuser. JMI—DX-3, metal, high quality—smooth & precise. Lower profile than rack and pinion & can work better in colder weather.

5. SONOTUBE not a metal tube! Better in winter, less dew prone, no heat plumes from observer, etc.

6. Red dot 1x finder. Along with a 6x30 Celestron finder w/ 6-screw mount. (One screw is slightly bent but works fine.) The red dot / 6 x 30 is a wonderful, light-weight combination.

7. Black elastic dust covers for both tube ends.

8. Handles added to base. Makes for easy carrying of mount.

9. Wheels added to base (removable). Makes moving scope around much easier. I’ll also include original feet.

10. Convenient carrying handle on tube.


Adjustable side bearings (repositioned and added felt pads for good balance). Mirror center marked for collimation. Scope holds collimation well.

Note: There are several small screw holes in the tube where the bearings were originally and where different finders and a Telrad were attached. They are covered with black tape. The advantage is you already have drilled holes if you want to add something. There are also several screw hole covers on the mount where a DSC encoder arm was attached and repositioned.

Good family or 1st scope. 8” is more manageable than 10”. Tube is 18 lbs., base 20 (vs. 35 & 30 for 10”).

No eyepieces included, though if you need some, I have two basic eyepieces in good condition that I would include for $15 more (Celestron SMA “Wide Angle”, 25mm and 10mm). If you’re interested in DSCs, Discovery sells a low-cost ($20) encoder mounting kit that requires no drilling! It works well.

Local buyer preferred (pickup upstate NY). I'm trying to sell this to someone in the local region first (during the next few weeks). That will probably not work out, however, so even if you do live some distance away, please let me know if you're interested! I have the original boxes (& manual) for packing. You’d pay shipping & insurance from 13850. CONUS.

Only $520.

Feel free to respond with any questions, interest.

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