From: Viktor Malanushenko
Subject: in addition to : 2.5m obslog 20081110 (MJD 54781)
Date: Tue, 11 Nov 2008 04:52:21 -0700
After a send of a obslog we waited up to the morning twilight.
Expected that the dust
level will decrease and we can continue observations.
However dust level remained high.
Viktor, Nathan and Jiang
>
> On Nov 10, 2008, at 10:22 PM, Viktor M wrote:
>>
>>                        APACHE POINT OBSERVATORY SDSS 2.5M
>>
>>                                  OBSERVING LOG
>>                             Monday November 10, 2008
>>
>>                                   (MJD 54781)
>>
>> ---=== OBSERVING TEAM ===---
>>
>> Elena Malanushenko  (swing)
>> Viktor Malanushenko
>> and MARVELS team:
>> Nathan De Lee
>> Jiang Peng
>>
>> ---=== OBSERVING PLAN ===---
>>
>>         Science!
>> 10 Nov 2008  54781.0  0.84  MARVELS  11.6 hours  Flexible Engineering
>>
>> ---=== OBSERVING SUMMARY ===---
>>
>> Clear photometric quality sky. High dust level.
>>
>> Exposed Marvels survey plates 3074, 3078,3075.
>>
>> We have stoped observations after accumulation
>> more than 20,000 dust-hours (with humidity >55%)
>> Please, check/clean mirrors tomorrow.
>>
>> No technical problems.
>>
>> ---=== OBSERVING LOG ===---
>>
>> Afternoon:
>> ==========
>> All systems are checked and they work properly.
>> Spectro collimation is set for 1C.
>> Delay with ventilation  because of clouds and 6K dust.
>>
>> Cart 7 is mounted.
>>
>> 23:45 Z started ventilation with still high dust 3.6K.
>>
>> Night:
>> =======
>>
>> Cart 7 Plate 3074 MARVELS, field A
>> 00:43:29Z gotoField  --  GSonGTF
>> 1 exp. 50 min
>>
>> Cart 1 Plate 3078 MARVELS, field A
>> 02:13:00Z gotoField  --  GSonGTF
>> 1 exp. 50 min
>>
>> Cart 8 Plate 3075 MARVELS, field B
>> 03:27:15Z gotoField  --  GSonGTF
>> 1 exp. 50 min
>>
>> 04:31Z stop observations: dust has overlimit (accmulated 20,000
>> dust-hours;
>> humidity > 55%)
>>
>> endNight finished happy.
>>