+RonC Posted September 14, 2018 Share Posted September 14, 2018 Fitting a powered focuser to a Moonlite CF focuser on an ED80 scope. Link to comment Share on other sites More sharing options...
+RonC Posted September 14, 2018 Author Share Posted September 14, 2018 This is the Moonlite in question.. Top is the photo I sent to Pavle, centre was his reply asking for measurements and the last is the 3mm spindle with the fine focus knob removed. He was worried about whether the belt would work as there are no notches on the knob? Link to comment Share on other sites More sharing options...
+RonC Posted September 14, 2018 Author Share Posted September 14, 2018 (edited) Moonlite use a stepper motor on the end of the focuser shaft which has a clutch inbuilt. (probably why it costs £280 !!) Edited September 14, 2018 by Ron Clarke Added image. Link to comment Share on other sites More sharing options...
Bottletopburly Posted September 14, 2018 Share Posted September 14, 2018 A small belt tad smaller than the knob dia turn it inside out , voila teeth ?? +RonC 1 Link to comment Share on other sites More sharing options...
+Graham Posted September 14, 2018 Share Posted September 14, 2018 The belt should work fine running on the knurling especially on a focuser of that quality. Or for belt and braces do as David says. +RonC 1 Link to comment Share on other sites More sharing options...
+Graham Posted September 14, 2018 Share Posted September 14, 2018 As it is a stepper motor I would run it on the large main focus knob. No problem with fine adjustment as you should be able to single step the motor -- Normally 200 steps per revolution. Link to comment Share on other sites More sharing options...
Bottletopburly Posted September 14, 2018 Share Posted September 14, 2018 I run mine on fine focus on cheap skywatcher on 200pds +RonC 1 Link to comment Share on other sites More sharing options...
+Graham Posted September 14, 2018 Share Posted September 14, 2018 5 minutes ago, Bottletopburly said: I run mine on fine focus on cheap skywatcher on 200pds I do as well on my GT81. I only use it as I use a dc motor and I need the fine control. Generally it is not a good idea because if the focus tube gets stuck for what ever reason be it jamming, getting frozen or the lock is on it could tear out the internal gearing on the focuser. +RonC 1 Link to comment Share on other sites More sharing options...
Bottletopburly Posted September 14, 2018 Share Posted September 14, 2018 27 minutes ago, Graham said: I do as well on my GT81. I only use it as I use a dc motor and I need the fine control. Generally it is not a good idea because if the focus tube gets stuck for what ever reason be it jamming, getting frozen or the lock is on it could tear out the internal gearing on the focuser. I removed lock screw ?? +Graham and +RonC 1 1 Link to comment Share on other sites More sharing options...
+RonC Posted September 14, 2018 Author Share Posted September 14, 2018 I have sent all the measurements to Pavle so I'll see what his answer is.. Link to comment Share on other sites More sharing options...
+Graham Posted September 14, 2018 Share Posted September 14, 2018 2 hours ago, Bottletopburly said: I removed lock screw ?? That's good thinking Link to comment Share on other sites More sharing options...
+Graham Posted September 14, 2018 Share Posted September 14, 2018 1 hour ago, Ron Clarke said: I have sent all the measurements to Pavle so I'll see what his answer is.. Good idea Ron. Let us know how you get on. Link to comment Share on other sites More sharing options...
Bottletopburly Posted September 14, 2018 Share Posted September 14, 2018 belt attached to Newtonian +Graham and +RonC 2 Link to comment Share on other sites More sharing options...
Alec Posted September 14, 2018 Share Posted September 14, 2018 On the ED80 +RonC 1 Link to comment Share on other sites More sharing options...
+RonC Posted December 11, 2018 Author Share Posted December 11, 2018 Arrived today, holes are in the wrong position but i think it's a simple job to drill 2 new holes. I'll put some photo's up later.. Cheers Ron Bottletopburly 1 Link to comment Share on other sites More sharing options...
+RonC Posted December 11, 2018 Author Share Posted December 11, 2018 (edited) Holes drilled OK, need to get some bolts from Screwfix tomorrow. Tested it on the laptop all OK but it doesn't like going through the hub!! Edited December 11, 2018 by Ron Clarke Bottletopburly 1 Link to comment Share on other sites More sharing options...
Bottletopburly Posted December 11, 2018 Share Posted December 11, 2018 1 hour ago, Ron Clarke said: Holes drilled OK, need to get some bolts from Screwfix tomorrow. Tested it on the laptop all OK but it doesn't like going through the hub!! Is it a powered hub Ron ? I run mine through a 12v powered hub , it’s a usb3 version though I’m on USB2 connection . Link to comment Share on other sites More sharing options...
+RonC Posted December 11, 2018 Author Share Posted December 11, 2018 Yes it is a 12v powered hub, the CCD and guide cam work OK trough it but the Canon 1000d doesn't?? I have a long lead so it's not a problem.. I'll put some photo's up when I've got the bolts tomorrow.. Cheers Ron Link to comment Share on other sites More sharing options...
Bottletopburly Posted December 11, 2018 Share Posted December 11, 2018 30 minutes ago, Ron Clarke said: Yes it is a 12v powered hub, the CCD and guide cam work OK trough it but the Canon 1000d doesn't?? I have a long lead so it's not a problem.. I'll put some photo's up when I've got the bolts tomorrow.. Cheers Ron I had trouble with my canon 1000d Ron I changed the usb cable and the usb hub in the end worked fine after that . Link to comment Share on other sites More sharing options...
+RonC Posted December 12, 2018 Author Share Posted December 12, 2018 (edited) Well it took a lot of messing about to fit it! I needed to drill 2 new holes to secure it and open up a 3rd for the focuser tension bolt.. Any way it's all together and awaiting a test session, I need another power lead first though! Edited December 12, 2018 by Ron Clarke Bottletopburly and Tweedledee 2 Link to comment Share on other sites More sharing options...
Bottletopburly Posted December 12, 2018 Share Posted December 12, 2018 1 hour ago, Ron Clarke said: Well it took a lot of messing about to fit it! I needed to drill 2 new holes to secure it and open up a 3rd for the focuser tension bolt.. Any way it's all together and awaiting a test session, I need another power lead first though! The newer version 1 looks nice and compact Ron ?? Link to comment Share on other sites More sharing options...
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