Differences

This shows you the differences between two versions of the page.

--- log [2025/05/12 19:45] – holtz
+++ log [2025/06/12 20:31] (current) – astroadmin
@@ Line 10: / Line 10: @@
 == Log ==
-/11/25 : lubed RA drive
+/12/25 : Jon and Zach changed the behavior of the Dome (thru ACP -> Preferences -> Dome Control -> Select Dome). Now the slit will only operate in the parked position. If you attempt to close the dome, it will first slew to part then close. This was done to prevent a potential (albeit low probability) critical failure from occurring due to the discovered behavior of the shutter error in the 100-105 azimuthal range).
+/10/25 : removed belt wheel on motor (15 teeth) and replaced set screws with actual #8-32 set screws. Not positive about these as they are hard to turn once they go all the way in, but hopefully OK. Pushed that wheel all the way in to better align with worm wheel, now both farther in then they used to be (to try to match set screw hole on worm wheel, but note that set screws on motor wheel are now no longer on flat section of motor shaft, which is less good).
+Cleaned the USB connectors for dome and weather station at the Icron in the dome.
+/9/25 : after report of continued trailing, removed both timing belt wheels. Put wheel on worm further in to try to get set screw to line up with hole on shaft, and attempted to move motor wheel in to match (with some issues due to interfering screw heads).
+/9/25 : lowered block with shutter limit switches so that they trigger at all azimuths.
+/28/25: Jon replaced the drive belt. Tenatively, this seems to have improved the 'trail' / 'bounce' issue. The belt is Dayton 1DHJ1 Synchronous Drive Belt. Belt Width: 0.37", Pitch Length: 15". Industry Part# 150SL037. Part can be found easily online (for example [[https://www.globalindustrial.com/p/150xl037-standard-timing-belt-xl-3-8-x-15-t75-trapezoidal?gad_source=1&gad_campaignid=20257062213&gclid=CjwKCAjwi-DBBhA5EiwAXOHsGVtcsgpnOlqiNFNhUDlBBLvfDUQynj8j18pMGrDp0CW3dkkfw8DZOBoCynkQAvD_BwE |here]] )
+/11/25: lubed RA drive
 May 2025: In March, the wheel that was replaced in May 2024 broke again. This was figured by loud noises and stops when the slit was over the wheel. Jon and Zach lifted up the dome using a car jack, removed the wheel, and determined that the bracket was wrapped and the core of the issue. We found https://www.mcmaster.com/2457T47/ which are commercially available which fits our specifications (4 inch wheel dia, 5 inch mount highet, 1-1/2 inch width).