Description
Off Axis H-Alpha Prominence Filter System fits 3 7/8”(98mm) to 4 1/8”(105mm)
Your O.D. Measurement: 3 7/8” (98mm) to 4 1/8” (105mm)
ERF Aperture: 1.25”
Off Axis H-Alpha Prominence Filter System ST425ERFOA
$899.00
Your O.D. Measurement: 3 7/8” (98mm) to 4 1/8” (105mm)
ERF Aperture: 1.25”
System does not work for Newtonian reflectors the focus travel is to limited. (Focus is extended out 3 1/8’’) with the minimum is f/15 cannot be achieved. Spectrum Telescope does not offer a system for Newtonian reflectors.
Out of stock
Additional information
| Weight | 2 lbs |
|---|---|
| Dimensions | 12 × 12 × 4 in |
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