Homemade Focal Reducer for a Telescope - 搜索图片

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skyatnightmagazine.com
What can a field flattener or focal reducer do for my telescope? - BBC ...
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mcobservatory.blogspot.com
Montgomery College Observatory: Focal Reducer
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cloudynights.com
Focal Reducer - Celestron Computerize…
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svbony.com
SVBONY 0.5x Focal Reducer 1.25 inch for Telescope Eyepiece Phot…

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cloudynights.com
Focal Reducer - Reflectors - Cloudy Nights
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cloudynights.com
Focal Reducer - Reflectors - Cloudy Nights
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Cloudy Nights
DIY focal reducer - Cats & Casses - Cloudy Nights
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Cloudy Nights
DIY focal reducer - Cats & Casses - Cloudy Nights

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forum.mflenses.com
180mm f/1.4 - homemade focal reducer
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forum.mflenses.com
180mm f/1.4 - homemade focal reducer
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forum.mflenses.com
180mm f/1.4 - homemade focal reducer
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forum.mflenses.com
180mm f/1.4 - homemade focal redu…

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