Baader AstroSolar Filter Film OD 5.0 is described as a versatile family of solar filter materials and ready-made filters for safely imaging the sun.
log in to read full article
the world wide web for retro machines
Baader AstroSolar Filter Film OD 5.0 is described as a versatile family of solar filter materials and ready-made filters for safely imaging the sun.
log in to read full article