Quote:
Originally Posted by brian nordstrom
 against physics , my Tak sky90 f5.5 and SW 102 f5 , both 500mm f/l's , the Tak shows more on luna, planetary and deep space than the sky watcher? .
Don't give me the "Coatings" thingy , ok , the SW coatings are new generation . The SKY90's are 10 years old , technology wise ? don't think so ..
Please explain ..
( See my post in Celestial events chapter titled this , spotted something this morning ....) ..
In my opinion a 120mm SW using an fl53 doublet APO is the bees knees , grab one and enjoy . Gonna be a classic like the ED80 .
Brian |
Not sure I am following this post. My experience with the issue of coatings more pertains to their longevity and resistance to potential harm. In this context I don't believe there is any contest between the applied coatings in premium brands compared to the budget brands. I have come across plenty of Synta Tech equipment wherein the coatings show signs of natural decay (i.e. not damage from misuse etc). Your 10 year old Sky90 is a tribute to the quality standards of Tak equipment and why it is still going strong even today.
Issues of optical performance more relate to the optical lens design, quality of glass and quality of construction/correction etc Thats my 2 cents worth at least
To put this all into perpsective with a hypothetical - hands up anyone who honestly thinks one of the mass produced particle board 10' Synta tech Dobs will still be in one piece if purchased today and used reasonably regularly over such a time period?
