GSO 1.25" Astro Filter #29 | Dark Red
This filter assists observing Mercury and Venus in the daytime, particularly the Venus terminator. Used on Mars it enhances the visibility of dark surface features and polar caps.
Used on both Jupiter and Saturn cloud belt details are enhanced.
It has also been reported to also help view transits of the Jovian moons across the disk.
Can be used as an alternative to a Moon filter to enhance contrast (especially near Full Moon) and improve sharpness.
Being a dark filter with low light transmission means this filter should only be used on larger telescopes.
Comes in protective case