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Canon Micro focuser


Viewmaster

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I have started doing all my AP outside without any PC at  present. ( bringing camera indoors to download.) 

Having a Canon 200mm f2.8 lens I thought it time to enable accurate focusing with it.

I used two 6-1 gear ration epicyclic gears used in old wireless sets to give me 36-1 step down driving the 12-1 toothed belt around the Canon lens barrel.

This gives me 1/4 inch movement around the black knob which  moves the lens focusing ring .001 inch radial movement.

It is all mounted on the lens using a tripod mounting, so when the lens is removed from the camera all the focusing gear comes off with it.

Note the lump of wood. laugh.png

There is also a red dot finder and a laser finder as you can see mounted on the camera flash shoe(!),  all in addition to my skywatcher GOTO.

Do you think that I will be  able to find M31 with that lot. laugh.png  wink.png

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