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5: Sight:Sight, when doing polar align it will help if I can aim the telescope coarse at the polar star with some sight device. ![]() To get some ideas I looked at this page: Sight device, and did the above design in CAD. The front and rear sight, I can adjust the rear sideways (Azimuthal) and at the front I can have a small screw that I can adjust up and down (Altitude). ![]() In my case it's not so many places I can install this sight. Just for test I placed the front sight in the form of a screw here. The rear sight I place on top of the focuser control. I need a precision of +/-1.5 degrees or better, the last deviation I can adjust with the mounts Azimuthal and Altitude fine adjustments. But in the dark, will I see anything ? Maybe it needs to be provided with dots of some fluorescent material. ![]() The 3D printed sight pair. ![]() Dependent of the distance between them maybe the front sight with the screw need another size of the screw's head. ![]() I mount the rear sight on top of the focuser controller, the front sight fundament is on another level and in this case I only need the M3 screw as front sight. If this work as I hope in the dark I make a new fundament where I can place the front sight.
Note: ![]() In daylight it work as it's supposed to do, maybe I get a precision of 1 degree. If it's problem to see the front sight I can set some paint on the screw's head. In practice I only use this for the Azimuthal adjustment, the Altitude I get from the spirit level (smart phone). With this together with the computer assisted polar align built in KStars/Ekos I can polar align better than 10' in 20 minutes.
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