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I acquired a SYC Yamamoto 108mm/ 1600 F/15 approx 6 months ago. Its approx. 30 years old and in mint condition. I sold my SW Equinox ED120 to help finance it. These are rare 108mm Fraunhofer doublets.
The OTA are the same as the equally rare Professional Tacso TE20. I have no regrets trading my ED120. Optically the views are 'similar' to the ED120m, however fine detail resolution is superior. CA is minimal and only seen when in the 200x + magnification on bright objects. The image is flat with no aberrations. Needless to say it excels on detailed planetary and lunar viewing. It can take 300x with no image deterioration. It has the 1.25 in focuser. Even the long tube 50mm finder gives good planetary and lunar images up to 60x. The whole set up is around 170lbs yet I can manage it in two lifts. It looks superb and has that 'wow' factor and one has to see it to realize the build quality. There is something very special with these long tube achromatics.
Chris
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