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glennbech

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Posts posted by glennbech

  1. Hey. 

    I just got a bargain on the 12" dob goto  since the previous owner was open about the scope having some tracking and goto or electronics issue  

    Now I figured out what's wrong. The alt axis works fine, and as expected, but the azimuth motors axis over react to every impulse

    So regardless of what slew speed  I set, it will always move the scope the same about in the az direction when I press a button

    This is, if course,  full crisis for tracking. The scope just does fast 360s 😂

    Anyhow. This miust be on the motor controller side right.? I can't see that this is a synscan controller issue? 

    Can I order replacements got the alt and az motors? 

    I DID connect the synscan controller to the az motoes with a RJ45 ethernet cable, as the previous owner misplaced it. The cable is a straight up RJ45 to RJ44 right? 

    Ideas? 

  2. Hey. 

    I just got a bargain on the older skywatcher 12 flextube dobsonian. 

    The main reason for the price, was that the electronics are faulty. According to the previous owner, the scope acted erratic on tracking. Ha also misplaced the cable between hand controller and az motors. 

    I have a few ways forward. 

    Can I disengage the motors and use it in manual mode, ie. Get more fluid motion than now then the motors act on the movement? 

    What cable would I need between az motors and hand  i controller. Can I upgrade to the latest WiFi system? 

    Can I hack or make something? I am proficient with a solder iron, arduino and my 3D printer. 

    Any advice taken, and sorry about the premature send. I had written. Almost this much when my phone died. 

    Rgards. 

  3.  I am refurbishing a Weltblick 60/910mm Circle K (Kenko) refractor from the mid-late 60's. These were produced in Japan and sold by department stores under a wide range of local brand names at the time. The only way to identify the maker and time of production is to look for identification symbols and "passed" stickers.

    12801183_10153321135376455_6088845823481290194_n.jpg

    The kit was dirty but very complete, dust caps on finder, scope, eyepieces. I have fixed a slack problem on the RA Axis, and taken the  EQ mount apart to its last part, polished, cleaned and re-greased. The mount is now butter smooth to operate. In the picture, you see vixen handles. The original ones are "springs", and cause a lot of unwanted motion in actual use.  

    This could have been a "love story", but the objective lens has major issues. The only cause I can imagine, is that it has been disassembled and re-assembled wrong in its history. If someone has experience in interpreting crazy star test patterns, don't be shy (PM me if you like).  

    I was very eager to get this fixed up, So I have actually bought a twin scope for parts. I got it for a bargain of 25 euros, from a German seller. The twin is another brand but 60/910, same age and manufacturer. I will either place the new OTA on this mount, or swap lens cells based on what tube looks best. 

    I think that scope looks smashing :)

     

     

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