Space/Science — HabitableZone

Space/Science » in reply to re: I don't have a sodium filter

re: I don't have a sodium filter

About $50 to $70 depending on the size. I only know, because I've had my eye on one, but don't know if it will make a big enough difference to justify the cost.

telescope.com

Log in or register to post.

The whole thread (8 posts)