Thanks for your input Matt. It would be interesting to see some images of the so called "Series I" and "Series II" Radians. I have always been amused by these unofficial titles given to various telescopes and accessories over the years. Takahashi is a classic example e.g. SKY-90 I, SKY-90 II, FSQ-106EDX III (is there an EDX I or II?), Teegul Sky Patrol II. To my knowledge, Tak don't use these designations, i.e. I, II or III, they have been dreamed up by vendors such as OPT, Takahashi America etc. otherwise they would label them as such.
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