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Teleview Powermate vs Barlow's + Effect on Focuser
Hi All,
I've searched the net a while now and can't seem to get the answer to this question.
"How does the focal travel get affected when using a barlow lens?"
I'm currently using the 1.25" 3x barlow supplied with the scope without any problems however, will I be able to use a 5x barlow with the 50mm travel that I have with my f/5 80mm refractor, or will I need some extra equipment? I'd just like to use it straight as it is without buying anything else with the barlow.
The 5x Powermate says it is parfocal. Does this mean I can take out the already focused eyepiece, put in the 5x powermate, replace the same eyepiece and there's no need to refocus? If I understand this correctly, then the 5x Powermate would be the way to go.
Can any of you Teleview enthusiasts and eyepiece experts give me some help on this one please?
Regards,
Glob.
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