One comment on “Field curvature

  1. Hi John, so in answer to your question regarding the OS RiDK 305, I have just purchased one on a Paramiunt MEII. first light coming up shortly, but out of the box and setting it up, it looks like a beautiful OTA. I use to have an LX200 16″ on a Paramount ME I and the mirror flp was so bad I could only image in monochrome. Nice website btw and hope you enjoy those cruises.

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