One of the things I struggled with when testing the star adventurer is that here in south Norway - the latitude is somewhere between 59 and 60° north. That means that the tracker is pointing 60° up and to look through the polar scope you have to bend down and then twist your head up (even on a high tripod).
I have a Nikon DR-5 right angle finder for my DSLR - so let's see if we can fit the two together with a little 3d printing.
First I tried this clip from thingiverse.
This had two issues. One is that the screw thread on the DR-5 outer screw ring didn't sit quite right. The bigger issue is that it clips over the knurled ring on the star adventurer. I need this adjusted to be able to see the scope in focus. This is both for direct viewing due to my eyesight and also through the DR-5 - this has it's own focus ring but needs the adventurer's own ring to bring the focus to a point where it can focus on it properly. This meant that the clip was loose.
Second attempt after looking through a fair number of options out there was to model in Fusion 360. After a few attempts I ended up with the following model (STL file):
The model has three small holes spaced around it where I used a metal M3 screw to in effect tap the holes, then plastic screws to actually grip the star adventurer. The extra black hex on each screw is really a spacer - added to make these easier to use with fingers.
Issues I still have to address here are:
But - in summary - it holds the DR-5 stable, and (given that I have unscrewed the focus ring on the polar scope a few turns before I fit it) I can use the focus on the DR-5 to view the scope on both of it's 1x and 2x settings.
So - I'm calling this one a success for now :)