NIKA October 10th, 2015 / S3
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2015-10-10
Following not updated
.Cryostat Temperature: 170mK cooling down slowly Modulation frequency: 10kHz 1mm, 5kHz 2mm Opacity is measured with the new taumeter at 225 GHz Nasmyth offsets : 0, 0 Set Focus : we start at -2mm (not at all optimised, first task is try to improve on this!) Quick description of the session: Test the Pako sequences and data flows.
Data Repository: /home/nika2/NIKA/Data/run13_X/scan24_X
Scan |
UT |
Source |
Command |
Az |
El |
Pointing X, Y, Focus |
Tau225 |
Comment |
144-148 |
12h10m |
Mars |
240 |
46 |
0,0,-2 |
0.7, increasing... |
checking focus, centered at -2, steps 0.6 |
|
149-153 |
12h20m |
Mars |
240 |
46 |
0,0,-0.8 |
0.7, increasing... |
checking focus, centered at -0.8, steps 0.6 |
|
154 |
12h30m |
Mars |
OTFgeom |
243 |
43 |
0,0,-0.8 |
0.7 |
we make a 'focus by hand' procedure, making at each step a small OTFgeom (NO lissajous!) so that then we can make maps pixel by pixel, less affected by the geometry (that we still do not know!)! first step: focus -0.8 |
155 |
12h38m |
Mars |
OTFgeom |
245 |
42 |
0,0,-1.3: focus -1.3 |
0.7 |
'focus by hand' procedure, second step: focus -1.3 |
156 |
12h44m |
Mars |
OTFgeom |
246 |
41 |
0,0,-0.3: focus -0.3 |
0.7 |
'focus by hand' procedure, third step: focus -0.3. It looks like we improve in this direction -> we try to go to positive focus... |
157 |
12h52m |
Mars |
OTFgeom |
248 |
39.5 |
0,0,+0.2: focus +0.2 |
0.7 |
'focus by hand' procedure, forth step: focus +0.2 |
158 |
13h04m |
Mars |
OTFgeom |
248 |
38 |
0,0,+0.7: focus +0.7 |
0.6 (? |
'focus by hand' procedure, 5th step: focus +0.7 |
159 |
13h13m |
Mars |
Pointcross 'mode b' (=bright source) |
252 |
35 |
0,0,+0.2 |
0.6 |
OPTIMAL FOCUS seems to be at +0.2 so we set this value for the time being. |
160 |
13h17m |
Mars |
Pointcross 'b' |
252 |
35 |
-17,+30,+0.2 |
0.6 |
Following the previous cross we set the pointing to -17 +30. Now checking that it's ok. |
161 |
13h21m |
Mars |
Pointcross 'b' |
254 |
34 |
+20,-20,+0.2 |
0.6 |
Checks on pointing... |
162 |
13h25m |
Mars |
Pointcross 'b' |
255 |
33 |
-4.6,-0.8,+0.2 |
0.7 |
Changed reference pixel, new checks on pointing |
163 |
13h27m |
Mars |
Pointcross 'b' |
255 |
32.5 |
-4.6,-0.8,+0.2 |
0.7 |
Remaking same cross, previous one gave bad results (clouds?) |
164 |
13h29m |
Mars |
Focusliss |
256 |
31 |
-4.6,-0.8,+0.2 (focus -1.2 to +2.2) |
0.8 |
Trying a focusliss now that we should be around the good value and better pointed |
166 |
13h40m |
DIY |
SKYDIP |
257 |
-- |
-4.6,-0.8,+0.2 |
0.8 |
|
169 |
13h40m |
DIY |
SKYDIP |
107 |
-- |
-4.6,-0.8,+0.2 |
0.8 |
|
171 |
14h06m |
G34.3 |
Pointcross 'b' |
110 |
27 |
-4.6,-0.8,+0.2 |
0.8 |
new compression of data file with 'moyennage' taken with mac35 |
173 |
14h11m |
DIY |
SKYDIP |
110 |
-- |
-4.6,-0.8,+0.2 |
> 0.8 |
strange results |
175 |
14h41m |
DIY |
SKYDIP (other script) |
110 |
-- |
-4.6,-0.8,+0.2 |
> 0.8 |
using skydip.pako script (the one to be used) |
177 |
14h50m |
G34.3 |
OTFgeom |
119 |
35 |
0,0,+0.2: focus +0.2 |
0.7 |
240x240arcsec |
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