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Celestron 80mm F5 RFT refrator OTA plus extras, excellent views For Sale

Price - $99.00

Ad Number: 131059

Posted: 08 Mar 2018

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Celestron Firstscope 80EQ Model #21072. 80mm F5, 400mm. A great rich field refractor OTA. This is 80's 90's scope I believe. It is all metal. This would be Celestron's version of the Orion ST80.

Excellent views with this scope. Sharp views even at 1800x. I know Castor is an easy split for this aperture at 4 arc seconds, but it was really beautiful with clear airy disc. Brighter stars turn clear at high powers with the 40mm or so aperture mask on the dust cap. Views of Jupiter were nice and an inexpensive #8 yellow filter should take out the purple halo. The 40mm aperture mask eliminated almost all the CA when viewing the moon at 100x. Diffraction rings are perfect and clear outside of focus, less clear inside focus but are still there.

The bracket, screws and thumb nuts to attach the scope is for an EQ1 mount. It will fit on the older and newer EQ1's.

I provide several extras: A 1 and 1/4 inch prism diagonal. A Japanese made meade 9.7mm super plossl with a box. A 32mm homemade 2inch eyepiece. ( I decloaked it and would just place it directly on top of diagonal. It seems to provide up to 5 degree view with the field stop being a full 32mm, but of course with edge distortion.) A good red dot finder with dovetail base. The original 6x 30mm sighting scope and stalk. The O-ring does work on the site scope, but should be replaced at some point. I have a clamshell that works for this tube. The felt on the clamshell is worn and needs reattached in spots, but will work fine as it is. The clamshell comes from an older EQ2 mount, but could be modified to fit other mounts.

Get all this for $99 shipped Conus. Paypal only. I will pay the fees.

I will be posting 2 EQ1 mount and tripods here in a few. Check my listings. Michael


  • Condition used
  • Location Elgin, TX

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