http://tech.groups.yahoo.com/group/William-Optics/ William Optics Telescope Discussion Group Sat, 07 Nov 2009 13:50:18 GMT Pete http://tech.groups.yahoo.com/group/William-Optics/message/20538 http://tech.groups.yahoo.com/group/William-Optics/message/20538 POP, Thank you, I sold my ZS 70ED on AstroMart yesterday. It was new in the box..I really love my little ZS 66SD. CS, Pete Fri, 06 Nov 2009 20:26:59 GMT popkrab http://tech.groups.yahoo.com/group/William-Optics/message/20537 http://tech.groups.yahoo.com/group/William-Optics/message/20537 If you want to see how does ZS70ED perform, please follow the link below. http://thaiastro.nectec.or.th/pop/m42-zs70ed-at2ff-qhy8.jpg POP Fri, 06 Nov 2009 18:28:31 GMT Perry Holcomb http://tech.groups.yahoo.com/group/William-Optics/message/20536 http://tech.groups.yahoo.com/group/William-Optics/message/20536 Hey Clive, I can speak from experience on this. I had a WO Megrez 110ED doublet.  Optics were good, but certainly not excellent.  Some, but not much, CA on Fri, 06 Nov 2009 17:56:14 GMT clivegibbonsca http://tech.groups.yahoo.com/group/William-Optics/message/20535 http://tech.groups.yahoo.com/group/William-Optics/message/20535 ... A very good 110mm ED doublet will typically show more than the world's best 90mm anything. Brighter image, better resolution. Fri, 06 Nov 2009 16:59:19 GMT Perry Holcomb http://tech.groups.yahoo.com/group/William-Optics/message/20534 http://tech.groups.yahoo.com/group/William-Optics/message/20534 Hey Charles, I have one mod suggestion for you, and it's easy to do.  It's what I did with my WO ZS66SD to keep the stock focuser from slipping when the scope Fri, 06 Nov 2009 16:05:51 GMT Charles http://tech.groups.yahoo.com/group/William-Optics/message/20533 http://tech.groups.yahoo.com/group/William-Optics/message/20533 Timm I saw that one but it's not the focuser that I have, My Focuser is the William Optics 2" 1:10 Dual Speed Crayford Focuser for Synta Refractors. I have it Fri, 06 Nov 2009 15:39:37 GMT Pete http://tech.groups.yahoo.com/group/William-Optics/message/20532 http://tech.groups.yahoo.com/group/William-Optics/message/20532 Thank you very much, POP ! The ZS 70ED is a beautiful scope, strong mechanics. But it will be sold. I'll keep the 66SD. It is lighter. I only use it for Fri, 06 Nov 2009 14:30:54 GMT Timm B http://tech.groups.yahoo.com/group/William-Optics/message/20531 http://tech.groups.yahoo.com/group/William-Optics/message/20531 Hi, My instructions are in the Files section titled "2-speed Microfocuser Retrofit.pdf" Which scope and focuser do you have - I will try to help any way I can Fri, 06 Nov 2009 13:17:13 GMT Charles http://tech.groups.yahoo.com/group/William-Optics/message/20530 http://tech.groups.yahoo.com/group/William-Optics/message/20530 Timm it would seem that all roads lead back to you, I have look for and can't find your craford focuser assembly intructions in the files section of the forum. Fri, 06 Nov 2009 12:40:42 GMT popkrab http://tech.groups.yahoo.com/group/William-Optics/message/20529 http://tech.groups.yahoo.com/group/William-Optics/message/20529 I never has ZS66SD but I have ZS70ED and AT66ED. I believe that AT66ED is same as ZS66SD but diffrent name. If I'm right, I would keep AT66ED and pass ZS70ED Thu, 05 Nov 2009 15:37:17 GMT Pete http://tech.groups.yahoo.com/group/William-Optics/message/20528 http://tech.groups.yahoo.com/group/William-Optics/message/20528 I have both of these OTAs. Tried them both, and can absolutely detect no difference in performance other than the focal lengths in image quality. To my Thu, 05 Nov 2009 11:32:37 GMT Gray Meyer http://tech.groups.yahoo.com/group/William-Optics/message/20527 http://tech.groups.yahoo.com/group/William-Optics/message/20527 Hello all, I was wondering if someone could help me decipher which is the correct FR/FF for the Megrez 110 and if that is not available, what is the next best Wed, 04 Nov 2009 21:54:02 GMT donboysail http://tech.groups.yahoo.com/group/William-Optics/message/20526 http://tech.groups.yahoo.com/group/William-Optics/message/20526 I just acquired a long time desired Megrez 110. I do integrative video AP and wanted an APO that provided a fast FR and would be not only a wide FOV DSO scope Wed, 04 Nov 2009 18:56:31 GMT Charles http://tech.groups.yahoo.com/group/William-Optics/message/20525 http://tech.groups.yahoo.com/group/William-Optics/message/20525 Does anyone have step by step instructions (with images would be great) of how to and reassemble a WO 2" duel speed focuser? I have some binding and need to Wed, 04 Nov 2009 00:36:22 GMT Joep http://tech.groups.yahoo.com/group/William-Optics/message/20524 http://tech.groups.yahoo.com/group/William-Optics/message/20524 Hmmm, weird, I hardly get any coma at all with the ZS66 ED petzval.