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5Å PE Hydrogen Alpha
You can never be certain of weather conditions
The Solar System filter wheel is also great for outreach and education
Bisque Paramount + TheSkyX
SkyWire is the most straightforward
Daystar ERF 140mm with 200mm Cap - E-200N140 C Adapter 5Å PE Hydrogen Alpha140mm ERF Glass, Cell & 200mm ID Cap For Refractors Discontinued DayStar Energy Rejection Filters reduce the heat load on your filter assembly by absorbing or reflecting UV and or I light and transmitting light in the desired visual spectrum. These filters are sometimes Red or Yellow glass, or dielectric IR and UV, but pass light in the desired visual spectrum. The ERF can also serve as an aperture mask to accomplish a straight angle of incidence for
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