Front Hydrogen Alpha FIlters
By adding one of these front mounted H-Alpha etalon filters and a rear mounted blocking filter, you can convert any night time refractor to become a powerful H-Alpha solar telescope. The etalons available are simply screwed to a separate adapter that fits your current telescopes dew sheild. All the etalons have a tilt function to allow for tuning and can be double stacked with an additional front filter.
Classic view
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Prices includes VAT, plus delivery