----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Tue May 25 16:14:00 GMT 1999 Year: 99 Doy: 145 Observer: yasukawa WEATHER COMMENT: Tue May 25 16:14:45 GMT 1999 Cool, clear, brisk southeast wind. Tue May 25 16:23:16 GMT 1999 MKIII Start Patrol Tue May 25 16:23:47 GMT 1999 PICS Start Patrol Tue May 25 17:00:33 GMT 1999 PICS Flat Tue May 25 17:01:43 GMT 1999 PICS End Flat **PSPT PROBLEM**: Tue May 25 17:52:05 GMT 1999 After removing several covers, I found the focus stepper. I cannot see the rest of the mechaanism without disassembling the secondary optics package, I think, NO DOCUMENTATION ON MECHANICAL ASSEMBLIES!!!!, three versions of optical schematics are just ray tracing with the lenses and filters drawn in, versions are different so apparently two are obsolete, also figured out how to move the focus with the PC, NO DOCUMENTATION ON THIS EITHER!!!! to test the focus motor and mechanisms. Before I started to open things up, I tried a Run to listen to the focus mechanism, BUT, guider would not lock on for some reason. I will have to query Roy before proceeding with focus mechanism check-out to avoid removing something that will screw up alignment. Tue May 25 18:00:31 GMT 1999 PICS Flat Tue May 25 18:01:44 GMT 1999 PICS End Flat **PSPT PROBLEM**: Tue May 25 18:56:52 GMT 1999 Found out why guider would not acquire sun. Beam splitter is not secure in its mount. I noticed that the beam to the quad cells was not projecting on the lens when the spar was closely pointed toward the sun. I was able to yaw beam splitter about the stem and move the beam onto the quad cell lens. Once this occurred, the guider locked on and the Run program continued. If it is possible to tighten the stem down, I will do that during the wait between data runs. Tue May 25 19:01:51 GMT 1999 PICS End Flat **PSPT PROBLEM**: Tue May 25 19:02:39 GMT 1999 Initial (around 1900 UT) data in focus. Tue May 25 19:08:48 GMT 1999 MKIII Start Cal **PSPT PROBLEM**: Tue May 25 19:19:51 GMT 1999 I did see one image of Ca out of focus during cal series where xy motion is going on. I did not see image before the out-of focus one, and next image, Ca again offset in xy, was in focus. Shift to red after the Ca xy offset series was in focus. COMMENT: Tue May 25 19:30:50 GMT 1999 Stopping to reconfigure dome shutter. Patrol Tue May 25 19:36:49 GMT 1999 MKIII Start Patrol Tue May 25 19:37:26 GMT 1999 PICS Start Patrol **PSPT PROBLEM**: Tue May 25 20:02:40 GMT 1999 Could not eliminate the yaw in the beamsplitter no matter how tight I made the screw, I did not want to tighten it too much for fear of stripping the screw or the threaded hole. Position holds so long as no one deliberately or accidentally moves it. Repositioned the beamsplitter to correct alignment after tightening both axes. **PSPT PROBLEM**: Tue May 25 20:58:07 GMT 1999 Opened up main optics housing cover (plate with the latches) and accessed the stepper motor for the focus mechanism. According to Roy, only the lead screw extending out of the motor can be lubricated, the rest of the mechanism is sealed. Phew! this avoids having to remove the entire secondary optics pacckage! Extended screw with "fcs goto blue" command on PC. Lubricated screw threads with Dow 33 silicone grease. Exercised the focus to spread the grease to the threads. Squeaky noise was eliminated. Tue May 25 21:03:36 GMT 1999 PICS End Flat **PSPT PROBLEM**: Tue May 25 21:09:26 GMT 1999 2100 UT data run was good, focus was good. Tue May 25 22:02:27 GMT 1999 PICS Flat Tue May 25 22:03:36 GMT 1999 PICS End Flat Tue May 25 22:08:28 GMT 1999 PICS End Patrol COMMENT: Tue May 25 22:12:17 GMT 1999 Tapes: MKIV: 99-145 PICS: P01449 CHIP: out of service LOWL: L00601 Tue May 25 22:14:33 GMT 1999 MKIII End Patrol **PSPT PROBLEM**: Tue May 25 22:21:08 GMT 1999 2200 UT data run images were in focus. Tue May 25 22:21:59 GMT 1999 MkIII 16_23.rawmk3 17_34.rawmk3 18_46.rawmk3 20_14.rawmk3 21_25.rawmk3 16_26.rawmk3 17_38.rawmk3 18_49.rawmk3 20_18.rawmk3 21_29.rawmk3 16_30.rawmk3 17_41.rawmk3 18_53.rawmk3 20_21.rawmk3 21_33.rawmk3 16_34.rawmk3 17_45.rawmk3 18_57.rawmk3 20_25.rawmk3 21_37.rawmk3 16_38.rawmk3 17_49.rawmk3 19_01.rawmk3 20_29.rawmk3 21_40.rawmk3 16_41.rawmk3 17_53.rawmk3 19_05.rawmk3 20_33.rawmk3 21_44.rawmk3 16_45.rawmk3 17_57.rawmk3 19_12.rawmk3 20_37.rawmk3 21_48.rawmk3 16_49.rawmk3 18_00.rawmk3 19_20.rawmk3 20_40.rawmk3 21_52.rawmk3 16_53.rawmk3 18_04.rawmk3 19_28.rawmk3 20_44.rawmk3 21_55.rawmk3 16_56.rawmk3 18_08.rawmk3 19_36.rawmk3 20_48.rawmk3 21_59.rawmk3 17_00.rawmk3 18_12.rawmk3 19_40.rawmk3 20_52.rawmk3 22_03.rawmk3 17_04.rawmk3 18_16.rawmk3 19_44.rawmk3 20_55.rawmk3 22_07.rawmk3 17_08.rawmk3 18_19.rawmk3 19_48.rawmk3 20_59.rawmk3 22_10.rawmk3 17_11.rawmk3 18_23.rawmk3 19_51.rawmk3 21_03.rawmk3 c19_08.rawmk3 17_15.rawmk3 18_27.rawmk3 19_55.rawmk3 21_07.rawmk3 c19_16.rawmk3 17_19.rawmk3 18_31.rawmk3 19_59.rawmk3 21_10.rawmk3 c19_24.rawmk3 17_23.rawmk3 18_34.rawmk3 20_03.rawmk3 21_14.rawmk3 17_27.rawmk3 18_38.rawmk3 20_06.rawmk3 21_18.rawmk3 17_30.rawmk3 18_42.rawmk3 20_10.rawmk3 21_22.rawmk3