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Takahashi FC-100DC debut (and diagonal problem)

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A Powermate, TeleXtender or Focal Extender (Tele Vue, Meade and ES products) move the focus point either not at all or very little.

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3 hours ago, Nakedgun said:

The short-throw focuser on the DC can make finding the right combination a trying experience. Diagonals from different manufacturers will not all have the same focal length, nor will all barlows. I found this shorty barlow to be helpful. To use a "regular" length barlow I have to change extension combos.  An observing associate with a variety of ep/barlow/diagonal choices can save some time and aggravation.

 

 

 

Absolutely! My barlow is also a shorty (Celestron X-Cel ED Barlow 2x) but I had no luck with it. Unfortunately where I live I know nobody pursuing visual astronomy who could help, and I can't keep buying more and more equipment just to try it once and resell it.

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2 minutes ago, John said:

A Powermate, TeleXtender or Focal Extender (Tele Vue, Meade and ES products) move the focus point either not at all or very little.

That's interesting, I didn't know that. I might buy a 2.5x Powermate to try it then.

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