Buy and Sell

CAS offers Society members and the general public the opportunity to advertise and sell their astronomy equipment on this website. It must be noted, however, that CAS is expressly not recommending the suitability or functionality of any equipment that is offered for sale on this website.

If you would like to have your astronomical equipment offered for sale on this page please send an image, description, price required and a contact telephone number and/or email address to:

StarlightXpress Trius SX26C + AO Unit + OAG

  • Trius SX26C Colour CCD Camera
  • SXV-AO-LF Large Format Adaptive Optics Unit
  • SX Off-Axis Guider

Excellent, as new condition. £2,250 (current retail approx: £3,775)

Williams Optics FLT110 + Mount + FLT 68 Field Flattener etc

  • Williams Optics FLT110 F/7 Fluoro-Star Triplet Apochromat
  • Heavy Duty extendable tripod
  • Tripod Head Mount (accepts 2 scopes)
  • Losmandy style Dove Tail Plate
  • 2 x WO Scope Rings
  • FLT Field Flattener 68
  • Lakeside Motors Electric Focuser and hand controller
  • Other misc. accessories
  • Original WO carry case;

Highly regarded telescope. All in excellent condition. £1,750

If you are interested in either or both of these items, please contact Brian via email at

Location: Exeter, Devon.

Large Dobsonian telescope and other items

Meade Lightbridge 16" Dobsonian reflector - open truss design with light-shroud (velcro fit); Crayford 2" dual speed focuser with 1.25" adapter; fitted with Telrad reticle viewfinder; one standard Meade 26mm eyepiece. Very well-maintained.

RRP £2,395 (telescope/eyepiece) + £40 (Telrad). Sale price - available for £1,300 or a sensible near offer

Also, an eyepiece to go with the above, at a bargain price in immaculate condition. It's a TeleVue ETHOS 17mm (2" barrel), the Rolls-Royce of eyepieces for breathtaking deep-sky observing. RRP £667! - sale price £350 ONO. This can be sold with the 'scope or separately if anyone is interested:

Total sale price of the 16" Lightbridge with the eyepiece = £1,600 ONO

Additional items:

  • William Optics 2" Barlow 2.5X apochromatic triplet - sale price £30
  • StarWay 2" Star Diagonal - Quartz, 99% dielectric - RRP £100 + - sale price £40
  • Meade Series 4000 2" f/6.3 Focal Reducer/Field Flattener - RRP £80-90 - sale price £35
  • Meade 2" 35mm extension tube - sale price £15
  • Orion 2" SkyGlow filter - RRP £75 - sale price £30
  • 2" Light pollution filter - sale price £30
  • ATIK colour astro camera ATIK-16ic, with software CD, USB cable and car cigar lighter cable - quite an old model, but never used! - sale price £30

Contact Chris Starr at or on mobile number 07429 296001

Two OTAs 200mm f5 Sky Watcher blue tube 200mm

gso f5 Crayford focuser auto focuser with cables Orion planetary webcam, spare rack and pinion Sky Watcher focuser 2" adaptors laser collimator
6 eyepieces plus finder scopes but no mounts
(no photos available)

£350 or nearest reasonable offer for the whole lot

Contact John Harris on 01443 672 260 or

Seller lives in Tonyrefail (4 miles northwest of Llantrisant and 16 miles from Cardiff)

Buy and Sell

Tal 100RS Refractor

In excellent condition
Includes OTA (no eyepiece) tube rings with fitted dovetail and finder scope.
The optics and tube are in excellent condition

£150 ono

Contact Rob Wood by by phone on 07907 234840 or by email at

Buy and Sell

Sky-Watcher Explorer 200p

Magnifications (with eyepieces supplied): x40, x80, x100, x200
Highest Practical Power (Potential): x400
Diameter of Primary Mirror: 200mm
Telescope Focal Length: 1000mm (f/5)
Eyepiece Supplied (1.25"): 10mm & 25mm
x2 Deluxe Barlow Lens 1.25" (with Camera Adaptor)
Dual-Fit 1.25"/2" Focuser
Parabolic Primary Mirror
0.5mm Ultra-Thin Secondary Mirror Supports
9x50 Finderscope
Direct SLR Camera Connection
EQ5 Deluxe Heavy-Duty Equatorial Mount
Built-in Polar Alignment Scope Holder
1.75" Stainless Steel Pipe Tripod with Accessory Tray
77% more Light Gathering than 150mm

Selling price £400

Contact :Ian Cadger by email at
or by phone on 07906 245 036 (if no answer please send text).

Buy and Sell
Buy and Sell

Skywatcher 250 PDS (10") reflector telescope

EQ5 synscan goto equatorial mount
Synscan goto controller
3 X counterweights
28mm x 2" eyepiece
1.25 adaptor
17mm x 1.25 Plossl eyepiece
12.5mm x 1.25 Plossl eyepiece
2 x Barlow lens
All cables, manuals, and caps
In as new condition
Note that I have not included the power pack as I need that for my new system


Contact: Bob on 07974 643 175 or e-mail