Saturday, October 28, 2017

Proper Reducer for TOA-130 scope

So, now where I know that the Super Reducer won't work for me, I was looking for others. I found quite the plethora of reducers:

NumberFocal RatioImage CircleBackfocusPrice
TKA31580f5.444mm$719
TKA31580L*f5.865mm106.2mm$3000
TKA31580Sf5.8$745
TKA32580Af/5.444mm$1190
TOA130R f/5.76$719

Apart from the various adapters that I need which one to choose??? Asked on the Uncensored Takahashi mailing list.

* This is the Super Reducer that I tried ...

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Most people pointed to the TKA3250A reducer. This is its spot diagram:

Not quite as good as the .67 flattener but WAY better than the 645 reducer.