What do you need?
Scissor, cardboard, pensil, knife, two sided tape, normal tape and solarfilm.
Step 1 : take the cover shield from your camera or telescoop (in this example it is for my 200mm scope) as a the inner diameter and add 5 cm for the outside diameter. Use the knife to cut the ring. Complete this step once more for having two sets of rings.
Step 2 : Put two sided tape on both rings and pull the strip off.
Step 3 : Take the solarfim - I'm using astrosolar film from Baader D5.0. Open the sheet and keep it flat by taping the ends on the table. Let one ring with two side tape "fall" on the solarfilter so it sticks to it. Turn it upside down and do the same for the second ring.
Step 4 : Make 3 to 4 long strips of cardboard about 5 cm wide. Fold them around the tube of your telescoop or camera lens and tape the ends together. The result is shown below as a "belt"
Step 5 : Finally tape both the ring with the solarfilm to the belt and make it rigor using normal but strong tape.
Picture taken from the "inside"
Picture taken from the outside.
