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Simple red/green dot assemblage

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Old Tuesday 9th September 2014, 18:52   #1
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Join Date: Dec 2013
Location: Cuenca, Spain
Posts: 492
Simple red/green dot assemblage

Some Spanish colleagues mount a red dot sight for easy finding of birds with the digiscope. Usually it is mounted in the tripod head (see for example

I've worked out a simple adapter mounted in the flash position: it is based in the fact that an aluminium plate 18'5 mm wide and 2 mm thick will fit snuggly on both the flash and the dovetail base adapter that comes with many sights

I've used a red/green dot that offers 5 intensities and 4 different sights (the dot just "floats" in front of your eye, there is nothing of a ray hitting the bird). It is compact, easy to see, and doesn't weight a lot. At 20 euros cost aprox. from Aliexpress includind sending costs.

From a plate of 40 mm x 2 mm of aluminium (would be fine from 20 mm x 2 mm, but i couldn't find it at local do-it-yourself) we cut a plate of ca. 20 mm x 2 mm, working after with a file to take of the 1'5 mm excess so it fits snuggly into the flash spacing. The lenght should be around 4-5 cm (better to leave it a little longer and cutting level with the front of the sight after bending, see after)

The sight is fixed to the plate using the allen screws.

After that, we bend carefully the plate to compensate for the ocular angle, taking care to leave enough space so that the part going where the flash is straight and allows pushing the sight to the bottom of the flash position (avoiding wobbling to sides).

We may need some adjusment to provide the right angle, after that fine adjustment can be done with the allen key provided.

The sight gets thus aligned with both camera and scope, is easy to put and take away, and its weight is negligible. Cost is a fraction of euro on material (plus the sight, which is not very expensive) and on time, once made the first is a question of minutes.

I've fitted it in a micro 4/3 camera, 4/3 also works (I suppose flash fitting is universal).

Seems sturdy, after some time I'll post on its drawbacks.

Here are some photographs to explain better what I mean.
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