Trying to do some chronographing on a new round a week ago , the old Chrony just didn't want to get with the program. Fought it until the wind started to pick up then put it back into the shop. Got to looking and the sky screens were really getting ratty.
Rather than ordering a new set it's always a whole lot more satisfying ( cheaper) to make something like that up homemade . We always keep a few cleaned out one gallon milk and OJ jugs on hand so since they looked a bit similar in appearance I grabbed two and using what was left of the old sky screens made up two new ones from the plastic jugs.
Rather than just making slits to run the wire uprights through, I used a paper puncher to cut holes for "run outs"at the end of each slit. This prevents the slits from becoming slots. To offer more shading in the top center of each screen, I used 3 computer address labels stuck in place.
Putting everything back together, I grabbed a rifle and did the testing I couldn't do last week. The new sky screens worked perfectly.
I am sure this isn't any kind of new idea but sometimes it doesn't hurt to be reminded of a old one.