- History
- View the source.
- Observing Log/2017-07-11 has been deleted.
Observing Log
Test observations with WHSF and MAC†
Tasks†
- Reduce baseline instability of DASH345.
Preparations†
- Basic checks
Information†
Radiometer [mm]: 0.42 by APEX
Measurement Logs†
Preparation†
Test observations with WHSF and MAC†
- Pointing toward W Aql with DASH345, WHSF
calib/WAQ3pw
- UT0026 start tuning
[asteobs@aste-1c 20170711T002003 itotetsu]$ asterx_set DASH345
### Query of LO Freq ###
LO Freq = 350.961793560
...
### Set LO Power ###
/cosmos3/naoj/bin/loatt_dash345_tune 350.961793560
/cosmos3/naoj/bin/loatt_dash345_val /home/astedev/frontend/loatt_ctl/loatt_dash345.conf 350.961793560
/cosmos3/naoj/bin/loatt_dash345 289 199
Set ATT : Pol0=289, Pol1=199
Pol0 = 289 , Pol1 = 199
Pol0 = 0.007053[A], Pol1 = 0.004856[A]
Pol0 = 0.656364[V], Pol1 = 0.725792[V]
...
> GET_SIS_VC 0 1
1.837540,44.888306
> GET_SIS_VC 0 2
1.858139,35.418701
> GET_SIS_VC 1 1
1.858749,44.140625
> GET_SIS_VC 1 2
1.832123,53.396606
[asteobs@aste-1c 20170711T003920 itotetsu]$ whsf_rsky
...
Result: Tsys[Tamb=293K]
S1USB S1LSB S2USB S2LSB X-IF1 X-IF2 Y-IF1 Y-IF2
246.8 187.6 263.4 228.9 236.6 194.0 247.9 242.5 [K]
[asteobs@aste-1c 20170711T004021 itotetsu]$ mmc1_rstop
...
*** stability ***
S1USB S1LSB S2USB S2LSB X-IF1 X-IF2 Y-IF1 Y-IF2
0.10 0.09 0.07 0.09 0.09 0.08 0.06 0.09 [%]
- UT0045 START OBSERVATION
- &ref(): File not found: "WAQD3pw-WHSF-DASH345-20170711a.png" at page "Observing Log/2017-07-11";
- Pointing toward W Aql with DASH345, WHSF, Synthe output +20dB -> +18dB
[asteobs@aste-1c 20170711T010639 itotetsu]$ loatt_dash345 284 118
Set ATT : Pol0=284, Pol1=118
Pol0 = 284 , Pol1 = 118
Pol0 = 0.006931[A], Pol1 = 0.002879[A]
Pol0 = 0.655811[V], Pol1 = 0.696245[V]
[asteobs@aste-1c 20170711T010659 itotetsu]$ femc_ctl DASH345 GET_SIS 345
> GET_SIS_VC 0 1
1.835022,44.332886
> GET_SIS_VC 0 2
1.860046,36.151123
> GET_SIS_VC 1 1
1.857071,43.569946
> GET_SIS_VC 1 2
1.833267,52.182007
[asteobs@aste-1c 20170711T010830 itotetsu]$ synthe_ctl B
FREQ = 14.623406336 [GHz]
AMPL = 18.00 [dBm]
RF = ON
- UT0129 START OBSERVATION
- Clock in Antenna Console is stopped.
- "Now re-connecting" is shown in COSMOS Manager repeatedly.
- &ref(): File not found: "Screenshot-Untitled Window.png" at page "Observing Log/2017-07-11";
- Antenna Console
- &ref(): File not found: "Screenshot-LOCAL CONTROLLER ACTIVITIES.png" at page "Observing Log/2017-07-11";
- LOCAL CONTROLLER ACTIVITIES
- This accident is logged in comment of JIRA ASTE-137.
- UT0140 Restart COSMOS at site
- Clock in Antenna Console became normal.
- START TUNING same table
calib/WAQ3pw
- tuning commands
[asteobs@aste-1c 20170711T020004 itotetsu]$ synthe_ctl B AMPL 18
### After setting synthe ###
FREQ = 14.623401648 [GHz]
AMPL = 18.00 [dBm]
RF = ON
[asteobs@aste-1c 20170711T020051 itotetsu]$ loatt_dash345 284 123
[asteobs@aste-1c 20170711T020128 itotetsu]$ femc_ctl DASH345 GET_SIS 345
> GET_SIS_VC 0 1
1.836319,43.685913
> GET_SIS_VC 0 2
1.858444,35.064697
> GET_SIS_VC 1 1
1.862717,43.008423
> GET_SIS_VC 1 2
1.835098,52.023315
[asteobs@aste-1c 20170711T020553 itotetsu]$ whsf_rsky
Result: Tsys[Tamb=293K]
S1USB S1LSB S2USB S2LSB X-IF1 X-IF2 Y-IF1 Y-IF2
206.7 161.8 222.0 196.9 201.0 170.8 216.2 211.1 [K]
[asteobs@aste-1c 20170711T021110 itotetsu]$ whsf_stab 10
*** stability ***
S1USB S1LSB S2USB S2LSB X-IF1 X-IF2 Y-IF1 Y-IF2
0.47 0.11 0.12 0.09 0.17 0.11 0.10 0.08 [%]
[asteobs@aste-1c 20170711T021708 itotetsu]$ synthe_ctl B
FREQ = 14.623399628 [GHz]
AMPL = 18.00 [dBm]
RF = ON
- In X2 and X4 QLOOK window, there is spurious lines.
- Stop observation and start tuning.
Radiometer [mm]: 0.4 by APEX
- UT 0223 START OBSERVATION
- &ref(): File not found: "WAQD3pw-WHSF-DASH345-SG18dB-20170711c.png" at page "Observing Log/2017-07-11";
- &ref(): File not found: "WAQD3pw-WHSF-DASH345-SG18dB-20170711d.png" at page "Observing Log/2017-07-11";
- 6th scan. Az instability looks slightly good(?). EL is almost same as before.
- &ref(): File not found: "WAQD3pw-WHSF-DASH345-SG18dB-20170711e.png" at page "Observing Log/2017-07-11";
- 10th scan.
- &ref(): File not found: "WAQD3pw-WHSF-DASH345-SG18dB-20170711f.png" at page "Observing Log/2017-07-11";
- 11th scan after R-SKy
- &ref(): File not found: "WAQD3pw-WHSF-DASH345-SG18dB-20170711g.png" at page "Observing Log/2017-07-11";
- 13th scan
- after 11th scan, instability is deceased?
- &ref(): File not found: "WAQD3pw-WHSF-DASH345-SG18dB-20170711h.png" at page "Observing Log/2017-07-11";
- 16th scan
- the ripple has returned!
- Pointing toward W Aql with DASH345, MAC, wide, IF 6GHz -> 6.4GHz
- UT0316 tune
- yfactor 1 3.64dB, yfactor 2 3.61dB
- &ref(): File not found: "WAQD3pi-MAC-DASH345-20170711J.png" at page "Observing Log/2017-07-11";