Idle Sunday binocular project… As my Helios 10*50s don't have any way of attaching nebula filters I thought I'd have a go at seeing if I could implement some kind of bodge... A spare pair of objective caps with a hole cut in the middle took care of holding the filters in place, and a pair of rubber washers, left over from another project, prevents the filters from scratching the lenses ... Quite pleased with the result. OIII on one side, UHC on the other. Can't wait to… https://theastroguy.wordpress.com/2026/03/08/idle-sunday-binocular-project/