Apograde review by Ignacio Rodriguez - William Optics

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www.tmboptical.com/documents/tmbFAQ.pdfFrom that document: “All the ED and fluorite doublets have only two color crossings(the only exceptions are the now canceled TMB fluorite doublet, the rare Astro-Physics 130mm and 152mm ZKN-7/FPL-53 ED doublets, and the Aries CAF-2 doublet)”Does anybody know if that TMB fluorite doublet design is similar to the one in the APOGRADE??Almost identical Megrez 80 II Semi-APO and SD version.Comparing the two telescopes I found that the first Megrez (July 2004) had a little better violet free views.However the second Megrez (April 2005) has better contrast.
I had both telescopes for a while and then sold the first one to a friend. I was planning to use the first Megrez toguide the second one in long exposure astrophotography but I can do this easily with the Megrez piggyback my8” SC. By the way, the Losmandy 105mm rings are very good for this purpose.II. APOGRADING:After several months I was thinking on an upgrade again. This time I wanted to move to the Megrez 80 ED ( orperhaps the Super APO! ) This is when I found about the APOGRADE. I have some doubts because I didn’tknow if it was better to sell the Megrez ( for the second time ) and buy a new Megrez 80 FD or 80 ED. I didsome math again and found out that going for the upgrade was not a bad idea and I could keep the old lens cellas a spare o maybe start working in a project using that cell.The cells look identical… but….
Page 1: APOGRADE REVIEW 03-29-2006By Ignaci
Page 5 and 6: OM-1 + 0.63 focal reducerRequired h
Page 7 and 8: The telescope is about 40 ft from t
Page 9 and 10: FD inside focus imaged directly at

Apograde review by Ignacio Rodriguez - William Optics

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