10/2/08


DIAL Daily Activity Log Telescope
Type: Ch5 Ch2 Ch1
Date: 10/2/2008   Time Zone: GMT-5 Primary Diameter 16'' 4'' 4''
Operator: Kuang   F/# 4.5 1 1
Sky Condition Sky condition cloudy       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 68 289.102   Voltage 1850V 800V 800V
291 Laser 1.5   60 297.088   Serial # 49
Ch5 Ch1 LICEL
Alignment No see below
Disc Level 8 8 8
ADC Range (mV) 500 500 100
Data Description                    
  Filter Delay (us)
Start time End time △t(min) Ch1 Ch2 Ch5 Ch1 Ch2 Ch5
keep the alignment of last time The actual delay is 0.5us. actual delay is 13us
12:00 12:18 2 N/A N/A N/A 0 202 for 285, 192 for 291  2
align mini-receiver with 291 ( usually align it with 285 since 285 has a bigger separation)
12:39 12:45
check curtain plots, signal too weak, worse alignment, realign
13:08 17:10
 
Purpose check mini receiver alignment
Comments

 


Range-corrected signal

 


 

Ozone retrieval (10-min resolution)