For Sale fs: Minisight Grain Focuser

[Jon Shiu]

This grain focuser works great. You adjust the eyepiece so that the line in the middle is sharp. Then you focus your grain, while seeing the sharp line simultaneously. You keep your eye consistent distance to the eyepiece, may an inch. I will include a photo of the instructions.

$12.50 plus postage.

Jon

 

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[Jon Shiu]

sold