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Home > Classifieds > Astromart Classifieds > Telescope - Refractor > Classified #244475

Trade: TMB EDStar 180mm F9 OTA for Questar 7

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About 20 of these 7.1" triplets were made a couple years ago, and are closely held. The massive CNC tube, rings, finder and 4" focuser are identical to the current crop. The color correction is similar to the Astro-Physics starfire series, or about half way between the Meade ED doublets and the latest EDF, TMB, TOA zero color APOs. More importantly, the wavefront is excellent at about .025 waves RMS, interferometric test report included. The planets are simply astonishing, and there is no color on the limb of the moon, only on the brightest test stars; see Cloudynites review of the lens design in an earlier tube. It has only needed to be collimated once on receipt and is now perfect. I am ONLY parting with because I am now using an 8" planetary refractor.

The cost from APM for one of these with shipping, duty, etc., was about $9000--the current F8 zero color version is 13 grand. It has been used only a couple times, virtually like new. I am looking for an interesting fork mounted Questar 7 or other possible trade-only at present.

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