NIKA October 15th, 2015 / S1

[[D2DLogNika2Run1 |Back to list of day to day logbook of observations]]

== 2015-10-15 ==

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==== Following not updated ====
''.Cryostat Temperature: 170mK cooling down slowly 
Arrays status tonight:  full 2mm array - 1-3 Hz noise; 2 feed lines on 1mm array 3-5Hz noise 
Modulation frequency: 10kHz 1mm, 5kHz 2mm

For this session Array 3 is connected, but still less stable than the others.

Opacity is measured with the new taumeter at 225 GHz 

Nasmyth offsets : 0, 0

Set Focus : we start at 0.0 mm 
We updated ini.pako. 
Remember 1mm difference between the focus of NIKA and the focus of the other IRAM instruments due to the design of the optics (SL).

 .Quick description of the session: focus tests.''
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Data Repository: /home/nika2/NIKA/Data/run13_X/scan24_X  

||'''Scan'''||'''UT'''||'''Source'''||'''Command'''  ||'''Az'''||'''El'''||'''Pointing X, Y, Focus'''||'''Tau225'''||    '''Comment'''         ||
|| 100      || 07h12  ||  Mars    || Track point   ||  124   || 47    ||   0,0,0.                  ||   0.14      || Pointing towards Mars. We are using the geometry reduced from yesterday's observation (kidpar_20151015s154_155_156_noskydip.fits) ||
|| 101      || 07h18  ||  Mars    || Pointingcross ||  124   || 47    ||   0,0,0.                  ||   0.14      || Checking pointing. Problem: All subscans set to 0. But the sze of the file is correct. ||
|| 102      || 07h21  ||  Mars    || Pointingcross ||  124   || 47    ||   0,0,0.                  ||   0.14      || Checking pointing. Problem: All subscans set to 0. Martino investigating the issue. ||
|| 103      || 07h24  ||  Mars    || Pointingcross ||  126   || 48    ||   0,0,0.                  ||   0.14      || Checking pointing. Problem: All subscans set to 0. ||
|| 104      || 07h33  ||  Mars    || Pointingcross ||  126   || 48    ||   0,0,0.                  ||   0.14      || Retrying scan after Martino tweaks codes. Seems to be related to the order in which we launch programs of the NIKA control software. ||
|| 105      || 07h38  ||  Mars    || Pointingcross ||  129   || 50    ||   -8.7,3.3,0.                  ||   0.11      || Correcting pointing. Comparing with the beam model (SL), the 1mm profile seems consistent with the scan and the diffraction produced by the tetrapod. ||
|| 106      || 07h43  ||  Mars    || Focustrack    ||  132   || 51    ||   -8.7,3.3,0.                  ||   0.19      || Axis=Z. At 1mm: z=-0.028+/-0.009. At 2mm: z=0.058+/-0.042. Close enough, keeping focus Z=0.0 ||
|| 107      || 07h54  ||  Mars    || Focustrack    ||  136   || 52    ||   -8.7,3.3,0.                  ||   0.17      || Axis=X. At 1mm: x=-0.079+/-0.021. At 2mm: x=0.188+/-0.289. ||
|| 108      || 07h58  ||  Mars    || Focustrack    ||  136   || 52    ||   -8.7,3.3,0.                  ||   0.17      || Axis=Y. At 1mm: y=-0.018+/-0.037. At 2mm: y=0.044+/-0.67. Difficult to do better in Y. ||
|| 107      || 07h54  ||  Mars    || Focustrack    ||  136   || 52    ||   -8.7,3.3,0.                  ||   0.17      || Axis=X. X focus = 0.1. At 1mm: x=-0.079+/-0.021. At 2mm: x=0.188+/-0.289. ||