Tony wanted specs on the reducer used with the Geoff Brown Observatory roof, in particular the gear ratio. I took a look at the unit. And found, unfortunately, that the informative plate was on the back of reducer. Almost impossible to see. And it could not be photographed effectively as such an oblique angle. Good thing an astronomer was on duty! I grabbed a small mirror from astronomy box α and altered the light path.
Friday, September 02, 2011
photoed reducer
Tony wanted specs on the reducer used with the Geoff Brown Observatory roof, in particular the gear ratio. I took a look at the unit. And found, unfortunately, that the informative plate was on the back of reducer. Almost impossible to see. And it could not be photographed effectively as such an oblique angle. Good thing an astronomer was on duty! I grabbed a small mirror from astronomy box α and altered the light path.
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