Hyperstar filter holder/dark filter

Here are 2 main files plus optional one.
To take dark frames on a hyperstar equipped telescope, you will need the dark filter.
The other one is filter holder for hyperstar, I tested these on celestron 9.25 with starizona hyperstar.
The third optional file can be glued to the back to make sure no light leaks.
After printing and cleaning, I immersed the filter in hot water for few seconds and then installed it in the drawer, pushing on all directions to make better fit.
Please flip 180 degrees when printing! I don't know why it is upside down here!