Dwight , yes it's through glass, here is the shot before I used the Hickspo disk on it . Three layers of coffee filter and one piece of glass mounted in a 72mm UV filter . I did this at each Glass enclosure , and it sure worked great.
Ok, why didn't you call me I would have ditched work?
I noticed a number of people wanting an old 72mm filter to modify on the Buy and Sell forum.
How did you do the modification to make the disk? I have some old 72 & 77mm filters I may have to experiment with. How did you come up with the number of layers of coffee filter to use.
The zoo was last min. Hell, I sat in the parking lot for an hour to see if it would slack, and I dicided to go home when i remembered i had an umbrella under the seat. Boy that was fun. Cam in one hand pack on back and unbrella in the other .