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--- observatory_dome_and_pier [2024/01/09 00:09] – jasonj
+++ observatory_dome_and_pier [2024/01/27 04:08] (current) – jasonj
@@ Line 1: / Line 1: @@
 ====== Observatory  ======
+===== Dome structure ======
+The observatory was designed by the M3 corporation, and  the original drawings of the dome are {{ :scope:dome:docs:m3_design.pdf | here}}. The dome is a 16-foot [[https://observatorysolutions.com/ash-dome-observatory/?gclid=CjwKCAiA1-6sBhAoEiwArqlGPu6jl4WD9ubnwKYwX6UCGSlKetIbs4mB43Zrvg02awQhgvUIrgWLchoC9D8QAvD_BwE|Ash-Dome]].
 ===== Observatory Control System ======
-===== Dome structure ======
-The observatory was designed by the M3 corporation, and  the original drawings of the dome are {{ :scope:dome:docs:m3_design.pdf | here}}.
+The dome has motorized upper and lower slit sections. Control of the upper slit and dome rotation is done through a custom relay box on the S side of the dome constructed by the Autoscope Corporation; the lower slit is controlled through a box on the N side, designed and constructed by Dave Woods. There is a manual/automatic toggle to allow dome control either through switches on the side of the boxes, or via remote control. Relays to control the dome motors are 24V relays and are activated by setting input control lines to ground. The 24V power is supplied externally.
+There is an encoder coupled to the motor drive shaft.
+There is a magnetic home sensor installed on the E side of the dome; the home position when the magnet on the dome lines up with the sensor places the slit at an azimuth of 80 degrees.
+See here for a description of the [[dome_control|dome control software]].
 ===== Telescope pier ======
-The PW1000 will be fastened to a custom plate that is attached to the pier with bolts. The pier before installation is shown in these photos. Also shown is new electrical work done in the center of the pier to have the right adapter plug for the PW1000.
+The PW1000 is fastened to a custom plate that is attached to the pier with bolts. The pier before installation is shown in these photos. Also shown is new electrical work done in the center of the pier to have the right adapter plug for the PW1000.
 {{gallery>:scope:scope:pier0?lightbox}}