FOC4.5 is a standard 1.25" rack & pinion focuser found on most commercial 4.5" telescopes. It's has a curved base for 5.5" diameter, low focus of 3" and travel of 1.9". Great for ATM's, or use for inexpensive replacement. Plastic construction.
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FOC4.5 is a standard 1.25″ rack & pinion focuser found on most commercial 4.5″ telescopes.
It’s has a curved base for 5.5″ diameter, low focus of 3″ and travel of 1.9″.
Great for ATM’s, or use for inexpensive replacement.
Plastic construction.
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