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Originally Posted by Reg Johnson
was on the series 500 plossel......use it as a door stop.
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i also remember at the november star camp, ken said he hardly ever used his 6.5mm eyepiece in his 12" which gives him 230x. We chucked it in his scope anyway and due to the major factors ie mirror the same temp as ambient and the seeing was 9/10, then out popped the cassini division and 5 or 6 moons of saturn from memory.
Do not confuse external factors with poor optics. I have mainly series 500 and have been using for 6 months. I am now moving on up, but I believe I will always class them as "good", it is just that i am ready for "better" r "best"
The series 500 are fine as a beginner's eyepiece. It is just that for the higher powers 6.5mm to 12mm, you need a cooled mirror (<1 degree difference) and good to great seeing.
I have a 5mm vixen at the moment ( aprox $200) and it also will not work well if the conditions are not right!