History of Observing Log/2016-10-24(No. 3) - ASTE Observation Wiki

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Observing Log/2016-10-24 has been deleted.
- 1 (2016-10-24 (Mon) 12:06:17)
- 2 (2016-10-24 (Mon) 15:07:11)
- 3 (2016-10-24 (Mon) 17:08:46)
- 4 (2016-10-26 (Wed) 17:15:00)

ASTE-165 Investigation of unstable signals of DASH345†

12CO(3-2) toward EP Aqr†

UT01:24 aste16/ast0165/EAC2Up0.tune
tuning log will be put here

UT01:36 LOST CONTROL PRIORITY just when scan monitor was launched...
- envmon and asp-mon also wend away
- Recovered by taking the control priority again

UT01:39 aste16/ast0165/EAC2Up0.start
- Flat spectra were seen in the frequency domain on the line QLOOK
- The flat spectra persisted even after restarting COSMOS3 at the ASTE and Mitaka sites
&ref(): File not found: "20161024-0205.png" at page "Observing Log/2016-10-24";

UT02:11 mac_sw REBOOT
- We found dummy mode messages in the manager GUI -> ASTE-163

UT02:22 aste16/ast0165/EAC2Up0.start
- The flat spectra were gone!
- A1's baseline levels were up and down.
- A1's Tsys is a double of A3's Tsys.
&ref(): File not found: "20161024-0222a1.png" at page "Observing Log/2016-10-24"; &ref(): File not found: "20161024-0222a3.png" at page "Observing Log/2016-10-24";

loatt_dash345 -p0 287
- Stability looked to be improved

UT02:40 aste16/ast0165/EAC2Up0.start

Tsys 443.2 294.0
Ta* ~3.3 ~3.4
強度は同じくらい、Tsysは悪い。

(screenshot-57.png)

UT03:45 aste16/ast0165/EAC2Up0.start

az,el = -76 32
daz,del = 0.0 0.0
Tsys A[1,3] = 494.9 306.0

(screenshot-58.png)

12CO(3-2) toward O Cet†

UT04:25 aste16/ast0165/OCC2Up0.start
- 12CO(3-2) USB IF=5.8
```
az,el = +10 70
Tsys A[1,3] = 366.6 254.8
```
- same tuning parameters as the previous EAC2Up0.start
- (screenshot-59.png)
- (screenshot-60.png)

UT04:44 aste16/ast0165/OCC2Up0.start
- 12CO(3-2) USB IF=5.8
```
az,el = -4 70
Tsys A[1,3] = 423.4 251.0
```
- default tuning
- (screenshot-61.png)

UT04:55 aste16/ast0165/OCC2Up0.start
- 12CO(3-2) USB IF=5.8
```
az,el = -13 69
Tsys A[1,3] = 387.7 250.5
```
- loatt_dash345 -p0 287
- (screenshot-62.png)

UT05:04 aste16/ast0165/OCC2Up0.start
- 12CO(3-2) USB IF=5.8
```
az,el = -19 69
Tsys A[1,3] = 443.0 249.8
```
- loatt_dash345 -p0 297
- (screenshot-63.png)

UT05:28 aste16/ast0165/OCC2Up1.start

12CO(3-2) USB IF=6.0

az,el = -39 65
Tsys A[1,3] = 320.3 223.1

default parameters
Unstability could not be seen ...
(screenshot-64.png)

2016/10/24 05:42:43
 Temp. :  -3.26 C   Humid. : 12.16 % (  0.58 hPa )   Solar :  0.00 kW/m2
 Wind  :   2.31 m/s  298 deg   AirPressure : 572.04 hPa    ( Rain:  0.01 )
 Opacity @220 GHz :   0.0389

Current time = 2016/10/24 05:42:45
Aspirin time = 2016/10/24 05:42:43
Weather time = 2016/10/24 05:42:31
Aspirin Offset : (Az, El) = (   4.59,  -9.64 )
Aspirin status : ** WIND ON ** ( C22:on  C6:OFF WIND:on )
Refraction Corr. status : OK

12CO(3-2) toward Orion KL†

UT06:xx aste16/ast0165/OKC2Up1.start
- 12CO(3-2) USB IF=6.0
- Same tuning parameters
- MAC-HIGH was used by mistake.

UT06:12 aste16/ast0165/OKC2Up1.start
- 12CO(3-2) USB IF=6.0
- Same tuning parameters
- Modified for MAC-WIDE
```
az,el = 58 60
Tsys A[1,3] = 353 243
```
- (screenshot-65.png)

13CO(3-2) toward Orion-KL†

UT06:47 aste16/ast0165/OKC3Lp1.tune
- 13CO(3-2) LSB IF=6.0 MAC-WIDE
- default tuning

UT06:55 aste16/ast0165/OKC3Lp1.start
- 13CO(3-2) LSB IF=6.0 MAC-WIDE
- (screenshot-66.png) spike at ~120km/s of A1 not A3
- (screenshot-67.png) spike at ~120km/s of A1 not A3
- (screenshot-68.png) spike at ~120km/s -> common to A1 and A2 -> not MAC issue
- freq ~330.45 GHz -> ?
- (screenshot-69.png)

UT07:19 aste16/aste0165/OKC3Lp2.tune
UT07:20 aste16/aste0165/OKC3Lp2.start
- 13CO(3-2) LSB IF=5.95 MAC-WIDE
- no manual tuning
- (screenshot-70.png)
- Since the spike moved by ~-50 MHz, we considered that it came from signal sideband after the 1st downconversion.
- IFにある程度強いスプリアスがいる??? -> on-offでそのキャンセル具合が変化している??? -> 生データを見る。

UT08:03 aste16/aste0165/OKC3Lp3.tune
UT08:04 aste16/aste0165/OKC3Lp3.start
- 13CO(3-2) LSB IF=5.95 (2nLO=8300->shifted center frequency by 50MHz) MAC-WIDE
- no manual tuning
- (screenshot-72.png)