----------------------------------------------------------------------------- Mauna Loa Solar Observatory Observer's Log ----------------------------------------------------------------------------- Fri Jan 12 17:19:16 GMT 2001 Year: 01 Doy: 012 Observer: yasukawa WEATHER COMMENT: Fri Jan 12 17:19:50 GMT 2001 Cold, in thick, extensive altostratus overcast, south wind. No shadows. **GONG PROBLEM**: Fri Jan 12 18:46:46 GMT 2001 Going down to GONG to take care of an Exabyte tape drive replacement. GONG COMMENT: Fri Jan 12 20:21:14 GMT 2001 Back from GONG. **MKIV PROBLEM**: Fri Jan 12 20:51:14 GMT 2001 IG met to discuss MK4 problems that occurred when we cleaned the O1. Andy suggested that the camera may not be linear and the problem of low signal with a clean lens might be due to that. David and I are running a light transfer curve with the mk4 pointed toward the sun in thick cirrostratus, with ND filter in the beam. **MKIV PROBLEM**: Fri Jan 12 21:39:36 GMT 2001 David is done with testing for the day. We will continue probably Monday. WEATHER COMMENT: Fri Jan 12 21:47:23 GMT 2001 Still in thick overcast. Fri Jan 12 21:47:43 GMT 2001 MkIV