Dew shield for SkyWatcher 9x50 finder scope

**Warning** a single wall is a bit thin and quite fragile, I will probably prepare and test a version with a thickness of at least 1mm.

Dew shield for the SkyWatcher 9x50 finder scope, that has a 57.4mm outer diameter.

EDIT : New **THICK** version with 2mm walls as the original design is prone to delamination

Length is 200mm.

I've printed it with 0.3mm layer height, and resized it to 101% in Cura before print, it slides smoothly on the scope.

It could be used on any other 50mm fin