[JAMF]

JAMF,
To get 24V, simply connect two 12V batteries in series. That is, connect one batt's neg. terminal to the other.s pos. terminal. Then connect the sight's lamp circuit to the other two terminals. Easy Peasy!

Maybe if you have them lying around. 8) I do now how to get 24V theoretically, as I still have the basic knowledge. Like calculating "Tau" for a cap&resistor circuit or resistance of a parallel/serial mixed resistor circuit. It's the practice of the thing.

12V is nigh invisible in the daytime, so it was 12V at night-time for some good shots:

The setup in front of the window (which is due for cleaning )




Beware, images below are clickable. The linked images are 1920x1920 res and are between 580 and 720kB in size.








I suspect the blotches to be secondary reflections or illuminated fingerprints from the long exposure.