Hi,
Had OK conditions for Jupiter observing. Filters for this were a PC Beta filter screwed into the e.p. barrel and a blue filter placed on top of the eye lens simultaneously. The PC Beta filter gives a neutral rendition by balancing 3 transmission peaks, (RGB). It is the only filter I know of that can be used with another filter without the image mushing out.
Sol Robbins
Had OK conditions for Jupiter observing. Filters for this were a PC Beta filter screwed into the e.p. barrel and a blue filter placed on top of the eye lens simultaneously. The PC Beta filter gives a neutral rendition by balancing 3 transmission peaks, (RGB). It is the only filter I know of that can be used with another filter without the image mushing out.
Sol Robbins
Attached Image: