Lumicon 58mm Minus Violet Filter Close Out Farpoint Carey Focus Mask -

Farpoint Carey Focus Mask - Meade 12 Inch SCT is an ingenious new way to easily focus a telescope

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Set screws mar and pit bare aluminum

25" eyepiece on top

Lumicon 58mm Minus Violet Filter Close Out Farpoint Carey Focus Mask -Lumicon 58mm Minus Violet Filter Lumicon 58mm Minus Violet Filter is used primarily to bracket the color corrected band of refracting telescopes. This filter can also be used as a visible filter in RGBV (red green blue visible) astrophotography with reflecting telescopes. Most digital CCD cameras have built in infrared filters, however a minus violet filter may be used in addition depending on how far into the blue your primary lens is color