Flux comparison

Flux measure with LGSW

The LGSW measure on DX (@1kHz and 2us pockel cells opening time) a flux of (B,Y,R) 2.5, 1.9, 1.1 kADU. Snapshots from 20180225_060255 to 20180225_062258

The LGSW measure on SX (@1kHz and 2us pockel cells opening time) a flux of (B,Y,R) 4.0, 5.8, 5.1 kADU. Snapshots from 20180225_060259 to 20180225_062231

In day time with the calibration unit the LGSW measure more flux on DX side (with the same Diode current). For example in snapshots DX 20180222_002107 fluxes are (B,Y,R) 9.1, 9.1, 8.4 kADU, instead in snapshot SX 20180223_010249 fluxes are (B,Y,R) 5.5, 4.0, 3.9 kADU. Snapshots were acquired with 0.95A on each CalUnit Diode Source.

Flux measure with Patrol Cameras

Fluxes are measured in counts in a square area of 40 pixels (~9arcsec) around the maximum.

DX snapshot: 20180225_074206

Blue flux: 255 +/- 10 kADU

Yellow flux: 171 +/- 11 kADU

Red flux: 262 +/- 12 kADU

SX snapshot: 20180225_074010

Blue flux: 231 +/- 7 kADU

Yellow flux: 195 +/- 4 kADU

Red flux: 355 +/- 12 kADU

-- TommasoMazzoni - 03 Apr 2018