9/26/08
| DIAL Daily Activity Log | Telescope | |||||||||||
| Type: | Ch5 | Ch2 | Ch1 | |||||||||
| Date: | 9/26/2008 | Time Zone: | GMT-5 | Primary Diameter | 16'' | 4'' | 4'' | |||||
| Operator: | Kuang | F/# | 4.5 | 1 | 1 | |||||||
| Sky Condition | Sky condition | clear | Field Stop | 1.5 mrads | 4.3mrads | 4.3mrads | ||||||
| Electronics | ||||||||||||
| Laser power | before data acquisition | |||||||||||
| HV (kV) | Green(W) | UV(mW) | BBO Crystal | PMT | EMI8931QA | R7400U-03 | R7400U-03 | |||||
| 285 Laser: | 1.5 | 70 | 289.102 | Voltage | 1850V | 800V | 800V | |||||
| 291 Laser | 1.5 | 61 | 297.088 | Serial # | 49 | |||||||
| Ch5 | Ch1 | LICEL | ||||||||||
| Alignment | Yes | Yes | ||||||||||
| Disc Level | 8 | 8 | 8 | |||||||||
| ADC Range (mV) | 500 | 100 | 500 | |||||||||
| Comments | Channel 1 can use 100 ADC range in future. | |||||||||||
| Channel 2should use 500 ADC range. | ||||||||||||
| Data Description | ||||||||||||
| Filter | Delay (us) | ADC range | ||||||||||
| Start time | End time | △t(min) | Ch1 | Ch2 | Ch5 | Ch1 | Ch2 | Ch5 | Ch1 | Ch2 | Ch5 | |
| The actual delay is 0.5us. | actual delay is 13us | 500 | ||||||||||
| 13:20 | 15:58 | 2 | N/A | N/A | N/A | 0 | 202 for 285, 192 for 291 | 5 | 500 | 100 | ||
| Set the appropriate ADC range of ch1 and ch2. Ch2 was not used before. Its ADC range was 100mV, not enough. Change ch2 actual gate delay is 0. check the saturation effects. | ||||||||||||
| 16:09 | 16:32 | 2 | 0 | 190 (actual delay is 0) | 2 | 100 | 500 | 500 | ||||
| change ch2 actual gate delay back to ~0.5us. Change ch5 gate delay back to 5us. | ||||||||||||
| 16:36 | 17:01 | |||||||||||
| Purpose | linearity test, data taking | |||||||||||
| Comments | Channel 1 is the bottom channel (10%) of the mini-receiver. Channel 2 is 90% channel of the mini receiver. Channel 5 is big telescope channel. | |||||||||||
Range-corrected signal
Ozone retrieval (10-min resolution)
