Astronomik H-alpha 6nm CCD MaxFR Clip-Filter for EOS APS-C Cameras 90 degree diagonal and the answer is simple:

and the answer is simple: You don't have to expose longer

the SV305M Pro captures sharper detail and higher contrast

LED display: LED display screen with large digitals

Standby Time: About 20 hours

Astronomik H-alpha 6nm CCD MaxFR Clip-Filter for EOS APS-C Cameras 90 degree diagonal and the answer is simple:Astronomik H alpha 6nm CCD MaxFR Clip Filter EOS APS C 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 the Takahashi Epsilon Astrographs. Our novel MaxFR emission line filters are suitable for very fast focal ratios. The new Astronomik MaxFR series of narrowband emission line filters is perfectly