Step 5: (2) Make a finderscope yourself
I did not mind to make a cross hair for centering the target because I prefer to have a clear view through the finderscope. The field of view is about 4.5 degrees. If you get your target within 1 degree it will be enough for the 24mm eyepiece.
Making a crosshair is not a big deal. I have repeatedly made/repaired crosshairs on other occasions. This can be done with very thin wire and an instant glue. They are placed after the eyepiece of the viewfinder. and close to it.