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About nonlinear

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  1. I agree. I had one myself a while back and it is still my favourite system. Way better than the Sphinx starbook that replaced it. Electronics has moved on a lot in the last 30 or so years, and there is a big difference between putting a diode in the power line, and implementing comprehensive protection on the motor drivers. I'm not saying it's not there, I don't know, but I wouldn't assume is was either! We really need to know how the cable was damaged.
  2. This is an old design, I wouldn't assume the drivers had short circuit protection. I'd be interested to know what the driver IC's are. It's also possible the encoders were damaged, resulting in an invalid input signal which the CPU doesn't recognise. Some idea of the cable damage would be useful.
  3. Hi Michael I know this is a very late reply, but did you get it going? I would guess that when you damaged the cable you shorted some of the drivers out which damaged them. best Stuart
  4. I have a gm8 with the digital drives, which works really well as a push to and track system. I'm thinking about upgrading to a goto but the gemini system seems very expensive as an upgrade path. I'm curious to know if anyone has tried fitting a Vixen skysensor 2000 to a gm8. I had one before on an eq5 and really liked it. I know you can program the encoder ratios, so it could potentially work on any mount. The main issue will be mounting the motors. Alternatively has anyone tried the EQStar system from Ukraine, available on ebay for around £300? thanks Stuart
  5. Hi Alex It's a great scope. I had the APM version, which has the same optics. One scope a regret selling. Good luck with the sale. Stuart
  6. I spoke to Steve a couple of weeks ago due to a problem I had with mould and he said he wasn't working on scopes at the moment because he was too busy.
  7. Can you post an example? Preferably without the flattener or filter wheel.
  8. Telescopehouse used to offer scope alignment before they were taken over. Might be worth a call. Have you tried Teleskop-Service themselves?
  9. I've just noticed that TS-Optics are selling a wide field binoviewer. This has a clear aperture of 28 mm, 30 mm prisms and the optical path length is 118mm. Has anyone used these? On paper they appear to have a better spec than the upcoming Baader Maxbright II.
  10. The nameless one (at the back) is I believe also fitted to the Altair 10x60mm RACI. Stuart
  11. Wow, stunning, a real sense of drama in the winning image.
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