Sometimes I have - or rather had - difficulties to see the crosshairs of my 8x50 finder, because it simply was too dark to see them.
This was a big nuisance: when imaging I usually 'impale' my object on one of the crosshairs of my finder, so that I can easily re-aim.
My German TAL-2M friend Rudy Prinz found a solution and I copied his approach (with Rudi's approval opf course !!!).
Ingredients (total costs: almost neglectable)
1 Potentiometer 10K
1 Resistor 470 Ohm
1 LED Red 5 mm
1 Empty film cannister
some duct tape
1 clothes pin
2 Meters 2-wire cable
The construction is easy: connect the parts as shown in the diagram, tape the LED holder with LED at the clothes pin, with the LED pointing forward.
|My first version, work done.|
|The red clothespin with the LED inside is clipped in my finder scope.|
March 2005: I gave the components a new home and replaced the adjustable potentiometer with one of the smaller types that you can adjust with a screwdriver.
I rehoused the same components as used in version 1 and used a PVC fitting.
The components are hidden in a PVC cap which I hotglued to the main PVC part.
The red LED which illuminates the cross hairs.
I should have done a neater job when insulating the contacts of the LED and also the hot glueing lacked patience ...
The PVC shop of course also had a fitting cap.
All I need to do now it to spray it black to give it a more professional appearance.