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PrimaLuceLab GIOTTO 120 Smart Flat Field Generator
Riduttore di focale Celestron a 4...
"These filters are very innovative because they have a unique and outstanding feature likely to get a lot more contrast and definition is the lack of central obstruction! Other sunscreens H-alpha, for example. Coronado , in fact suffer a significant obstruction in the opening of the filter (eg. Coronado 60: opening 60mm, 13.8mm obstruction that is 23%). There are those who still insist on saying, in order to justify their presence, that the obstruction effect of an optical system but now it is known worldwide that the opposite is true! But the absence of obstruction is not the only strength of Solarscope ... Key Benefits and Features:
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