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 !!!).
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Ingredients (total costs: almost neglectable)
1 Potentiometer 10K 1 Knob 1 Resistor 470 Ohm 1 LED Red 5 mm 1 LED-holder 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. |
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My first version, work done. |
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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.
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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. |
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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 ... |
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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. |
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