Astronomik SII 12nm CCD MaxFR 1.25" – High Contrast Imaging Filter svbony sv188p If you do a 30-sec

If you do a 30-sec exposure without any filters from a light-polluted urban observing site

Parfocal: No refocusing needed when switching filters

allowing you to extend the exposure time and capture faint structures more effectively

Working current :17mA

Astronomik SII 12nm CCD MaxFR 1.25" – High Contrast Imaging Filter svbony sv188p If you do a 30-secAstronomik SII 12nm CCD MaxFR 1. 25" (M28. 5) MaxFR Astronomik photographic narrowband emission line filters for fast optical systems There is an ever growing demand for filters suitable for extremely fast optical systems like Celestron's RASA and Takahashi's Epsilon Astrographs. Our novel MaxFR emission line filters are ideal for very fast focal ratios. The new Astronomik MaxFR series of narrowband emission line filters are perfectly matched for deep