Hi I have a fliter set of Red, Green, Yellow and Blue. I used them once and put them back in the box. I took them out once more to photograph them. My observing location is not Mars friendly so they need to go.
They are 1.25" the set # is 5514 and the filters are:
#80A - Blue
# 15- Deep Yellow
$35 + $3.85 priority mail My loss your gain!
Paypal + 3%