0.9m Telescope "Events"

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   DATE         EVENT                      RESULTS
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***** primary scheduled to be washed every 6 months starting 2015 *****

27 DEC 2017     primary washed             82% reflectivity
                before wash                78% reflectivity

04 APR 2017     primary washed             82% reflectivity
                before wash                75% reflectivity

14 SEP 2016     primary washed             84% reflectivity
                before wash                80% reflectivity

16 MAY 2016     Torrent controller replaces ARCON

09 FEB 2016     primary washed             83% reflectivity
                before wash                79% reflectivity

17 OCT 2015     1.5m spec ARCON video board installed only ur amplifier works

19 AUG 2015     baffle re-installed and lateral support fixed

19 AUG 2015     primary washed             84% reflectivity
                before wash                72% reflectivity

03 DEC 2014     baffle re-aligned - was out of position due to loose support 
                (from mirror cleaning?)

13 AUG 2012     primary washed             82% reflectivity
                before wash                60% reflectivity

13 AUG 2014     primary washed

22 JAN 2014     first night of dewar & CCD replacement 

20 JAN 2014     dewar removed due to coolant leak & vacuum loss

                20 yr old O-ring replaced
                L2 tank temperature sensor wires replaced due to overheating
                molecular sieve & vacuum sensor changed
                detector cleaned

24 APR 2012     primary washed             86% reflectivity
                before wash                63% reflectivity

30 DEC 2010     recabling                  rebalanced
		electronics repositioned

27 DEC 2010     primary washed

24 JUN 2010     primary washed             87% reflectivity
                before wash                75% reflectivity

11 SEP 2009     primary washed             ... reflectivity
                guider cleaned... reflectivity

07 MAR 2009     power outage               gain = 1 on CCD saturates ~40K

05 FEB 2009     primary washed             87% reflectivity
                before wash                47% reflectivity

25 APR 2005     first night of new TCS     pointing to < 20 arcsec, fast slew
02 APR 2005     last night of old TCS

   MAR 2005     Tek #1 V filter used       replaced Tek #2 for CTIOPI
   FEB 2005     Tek #2 V filter cracked   
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Mirror Washes

    https://www.ctio.noao.edu/DocDB/0002/000291/019/Mirror_Reflectance.pdf

Mirror Washing Schedule

    https://www.ctio.noao.edu/DocDB/0005/000597/001/Mirror%20Cleaning%20Schedule%202013.pdf