- Dec 30, 2016
I think we're both beginning to get a handle on what is really possible without breaking the bank !
Oh i get it, How are you going to use a bigger lens with it ?The sanwu 3X is 2 parts that screw together, each houses 1 lens and you have a dozen or more rotations to move it's lenses apart 3/4 of an inch, so you can make small adjustments that hold, now if the sliding ratio has a longer " stroke " then it may be easy to focus to a point at distance, but the longer the distance the more fine the adjustment needs to be.
That is a 1/64 rotation has more effect at 80 feet than 16 feet, you may want 1/128 of a rotation at longer distances to fine tune the spot size.
I'm not right now, not with threads that is, I am going to test 2-3.5 inch PCX and aspheric lenses with a nubm44 and a G2 and work with the G2's focus, then with a 44 and G2 with 6X correction and the larger lenses, I will use card stock sliders for testing, once I have found what works best I will decide if it can be finished as a slider or if I need to have a threaded adjuster lens holder made.
But I have to at least use the card stock sliders, just holding the lenses by hand is very difficult to align at 80 feet.
I may also test the 4 inch aspheric with the raw diode output, but again I must make at least a cardstock holder/slider to keep the diode window clean and maintain alignment.