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I'm selling my my 70mm secondary mirror I used with my 150mm F4 newtonian for 100$ (final price). Shipping expenses (from Beirut, Lebanon) on me for free provided I use LibanPost for shipping. We can discuss using other shipping methods and maybe splitting the cost. The mirror is brand new, still have the original package and box, bought the telescope a month ago and used only twice. No scratches, not even dust (images attached). Excellent mirror, no issues whatsoever, 94% reflectivity and optimized for the offset of f / 4 Newtons, but it can be used up to f / 5. It's from TS, made in Taiwan, original price is 134 euros (including VAT) excluding shipping and custom fees. Link below: https://www.teleskop-express.de/shop/product_info.php/info/p10673_TS-Optics-Newton-Fangspiegel-D---70-mm-mit-Halter.html It does not come with the tilt screws and center screw though unfortunately. I can also sell you the spider vanes (1mm thickness) for 6 inch newtonian for 25USD. Also brand new but without the tilt screws and adjustment screws. https://www.teleskop-express.de/shop/product_info.php/info/p11056_TS-Optics-Spinne-fuer-6--Newtons---164-mm-bis-180-mm-Tubus-Innendurchmesser.html Let me know if interested. Clear Skies! Anthony <private email address removed>
Hello, Is anyone here using the TS Photon 6" F4 newtonian? I'm about to purchase it but I have some doubts and questions: 1- Does it hold collimation well, at least in a single session? 2- Is it impossible to balance in DEC due to its small dovetail or is it possible but harder? 3- Is the focuser rigid enough or does it introduce tilt? 4- Will collimating it be a nightmare? 5- I'm really picky when it comes to coma, should I expect some coma on edges even while using the Skywatcher Aplanatic F4 CC? 6- All in all, do you advice me to buy it or have some other option in the same price range. Cheers! Anthony
Vixen R200SS 8" F4 Astrograph with Vixen coma corrector. Superb optics. Barely used in excellent condition with original accessories, tube rings, and dovetail. It has Bob's knobs fitted and comes with original collimation screws as well.Collection only from Bristol or I could meet you within a few miles of M4 J20 / M5 J15. I will not send this by courier/post. £550. Payment by PayPal or cash on collection please.