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William Optics GT81 Flattener
Hi All
I am looking for advise from the astro community. I am a newbie looking at the William Optics GT81 telescope as an upgrade from my ED80. I cant help but notice that there are no straight flattener's for this scope. Willaim Optics sells you a flattener / 0.8 reducer. Why would they sell a reducer with this scope and not just a flattener. I am worried about loosing focal length on an already short OTA. can anyone recommend a straight flattener , can i re-use my orion field flattener from the ED80 or are there good reasons why William Optics only sell a 0.8 reducer.
Kind Regards
Orion
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