Altair Astro Sabre Alt-Az mount

How to improve lubrication and striction on Astair Astro Sabre mounts – instructions from Altair Astro engineer at International Astronomy Show UK 2018

I had a go tonight at improving the stiction on my heavy duty mark I Altair Astro alt-az mount – I was given the following advice by an engineer on the Altair Astro stand at IAS in Coventry, UK, 2018. I have got so upset by this stiction (jumping effect when try to nudge the scope at high power) that I have seriously considered selling it – particularly when trying to move around the solar disc during daytime observing with my Equinox Pro 80mm + Daystar Quark. The Altair Astro engineer told me the problem was all to do with the company’s choice of lubricant at manufacture and changing the lubricant would do miracles – unfortunately I cannot find the lubricant he advised so am trying an alternative.

NB For anyone with a Sabre mount who is wondering what the black plastic ring is on the photo below at the bottom of the mount – this is the top of a HEQ5/EQ5 extension tube which I use with my HEQ5/EQ5 tripod and the Sabre mount – this allows me to keep the extension tubes on the tripod closed to maximise stability in use.

Andy

 

How to improve lubrication and striction on Astair Astro Sabre mounts – instructions from Altair Astro engineer at International Astronomy Show UK 2018:

 

  1. Buy killiapoise lubricant
  2. Unscrew large screw on side
  3. This part I found I did not need to do as mount now pulled apart vertically: Inside delrin puck black plastic disk – get long wood screw with sharp tip – stick into delrin and pull out 2mm only to clear shaft
  4. Pull hard on top and pull it off
  5. Clean gloopy mess
  6. Put killiapoise on the shaft and reinsert
  7. For horizontal bar (altitude bar) undo dog screws couple mm. only on each side of bar
  8. Pull on sides of bar and shafts come off
  9. Remove top large bolt
  10. Pull shaft out
  11. Clean well
  12. Coat liberally with killiapoise
  13. Ensure do not get killiapoise on clothes
  14. Wipe off excess that oozes out