Description
Your O.D. Measurement: 9 3/8” (238mm) to 9 5/8” (244mm)
ERF Aperture: 3.00”
Off Axis H-Alpha Prominence Filter System ST975ERFOA
$1,299.00
Your O.D. Measurement: 9 3/8” (238mm) to 9 5/8” (244mm)
ERF Aperture: 3.00”
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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