4SE Focus knob fell off!!!
Posted 23 November 2012 - 10:47 AM
I don't want to glue it on as I may need to take the back off at some point. Anyone else had this? I was hoping it would somehow clip back on the bar, but alas nothing for it to grip on.
Anyone had the back off their nexstar and got the focus knob to stay fixed on the bar after refitting????
Posted 23 November 2012 - 11:20 AM
Wecome to CN and to this forum
Sorry to hear of your misfortune with the 4SE's focusing knob. I'm not familar with this particular Nexstar, but it looks as if the knob's retained by a grub screw which might have gone awry.
Perhaps the series of images contained in this link attributable to our CN friend and colleague Hernando, might help ?
Posted 23 November 2012 - 12:13 PM
This is my first scope in about 35 years, loving the night sky once again.
Posted 23 November 2012 - 01:47 PM
Nice to hear of your renewed interest in the night sky.
Hope the pics our Tel pointed you to prove to be helpful and that your repair goes well.
Posted 23 November 2012 - 01:54 PM
Hope you get it fixed.
Posted 26 November 2012 - 11:53 AM
So it looks like the grub screw came loose. Which makes sense as there was some travel when turning the knob.
Anyway, as per the pictures, the rubber outside covers a metal tube that has the grub screw. In my case the rubber sleve and the metal tube had come away in one piece and once I managed to prise the tube out, refit and tighten up the grub screw all is well with the world, apart from the rubber cover being a bit looser.
Thanks for the help - another crisis averted
Posted 26 November 2012 - 12:07 PM