[WITHDRAWN] Celestron AstroMaster 90 az

[baileys2611 (Simon Bailey)]

I'm selling this for a colleague, he has unpacked the scope and used it once but it for all intents and purposes is brand new. Has no marks, has original boxes and documents and was purchased recently.

Quick and easy no-tool setup
Permanently mounted StarPointer
Erect image optics - Ideal for terrestrial and astronomical use
Quick release dovetail attachment - no tool setup
Pan handle Alt-Az control with clutch - for smooth and accurate pointing
Rugged pre-assembled tripod with 1.25" steel tube legs - Provides a rigid and stable platform
All coated glass optics for clear, crisp images
Deluxe accessory tray for convenient storage of accessories


Specifications:

Optical Design Refractor
Aperture 90 mm (3.54 in)
Focal Length 1000 mm (39 in)
Focal Ratio 11
Eyepiece 1 20 mm (0.79 in)
Magnification 1 50 x
Eyepiece 2 10 mm (0.39 in)
Magnification 2 100 x
Finderscope Built-on StarPointer
Star Diagonal Erect Image Diagonal - 1.25"
Mount Altazimuth
Tripod 1.25" steel tube legs
Weight 20 lbs (9.07 kg)
Highest Useful Magnification 213 x
Lowest Useful Magnification 13 x
Limiting Stellar Magnitude 12.3
Light Gathering Power 165 x
Angular Field of View (deg) 1 °
Linear Field of View (@1000 yards) 53 ft (16 m)
Optical Coatings Multi Coated
Optical Tube Length 36 in (914 mm)
Tube Attachment Dovetail Bar

Asking price is now $350 (down from $400 (new they sell for $425 or thereabouts)). Pictures attached.

Any enquiries please feel free to PM me.

[Merlin66 (Ken)]

I don't know if this is of interest to prospective buyers, but this scope makes an ideal "donor" for a Ha PST mod.
I used one for a couple of years......

[baileys2611 (Simon Bailey)]

Bump

[baileys2611 (Simon Bailey)]

Down to $350

[baileys2611 (Simon Bailey)]

Bump

[pw (Peter)]

Originally Posted by Merlin66

I don't know if this is of interest to prospective buyers, but this scope makes an ideal "donor" for a Ha PST mod.

Can you explain a bit more about this?
Do you need the PST scope and this scope?
Do you mean using the etalon and filters from the PST on this scope?


--
Peter

[brian nordstrom (As avatar)]

Yes and yes .
And an adaptor thats safe .
Brian.

Originally Posted by pw

Can you explain a bit more about this?
Do you need the PST scope and this scope?
Do you mean using the etalon and filters from the PST on this scope?


--
Peter

[baileys2611 (Simon Bailey)]

Thanks for replying Brian, I was madly researching to figure it out.

[Merlin66 (Ken)]

I have a write-up available on PST mods - just drop me an email for a copy.
basically the gold tube is removed from the PST (Stgae1 mod) and replaced with a donor OTA fitted with an energy rejection filter (ERF)
A stage 2 mod dumps the PST black box and uses the series of spacers and preferably a larger blocking filter.
Hope this helps.

[pw (Peter)]

Thanks Brian and Ken. This is probably not for me then. I want a ready to go solar scope for observing and imaging. I currently don't have any solar equipment except a Baader white light filter for my 8" Dobsonian.
Sorry to side track the OP's for sale post. Good luck with the sale.

[baileys2611 (Simon Bailey)]

Still hanging around, for sale.