| | 105 | === Acquire twilights for both guiders in all filters === #gctwi |
| | 106 | * Start this about 5-7min before sunset |
| | 107 | * Try exposure times like 0.01s with very short cycle times |
| | 108 | * Cycle through all filters: B, g‘, r‘, i‘, (Clear - optional) |
| | 109 | * Adjust exposure times of both GCs to obtain two sets of twilights: |
| | 110 | * 20 "bright" images at 40-50k counts |
| | 111 | * 20 "faint" images at 5-10k counts |
| | 112 | * Full instructions are here: [wiki:HetProcedures/RA/probecals] and include how to take the images, how to process them into flats, and how to install them (either temporarily or permanently) into TCS. |
| | 113 | |
| 107 | | * Adjust exposure times of both WFS to obtain two sets of twilights: one with peak flux values around ~3000 counts and one with peak flux values at 40-50k counts (saturation is 65k). |
| 108 | | * '''Verify that the spot positions are unchanged''' from flats taken previously (i.e., daily during OPS with dome lights on). If the spots have moved, contact Hanshin to get help updating the PAS pipeline that processes the wavefront sensor images. |
| 109 | | |
| 110 | | === Acquire HPFACQ twilights (high flux and low flux) === #hpfacqtwi |
| | 117 | * Adjust exposure times of both WFS to obtain two sets of twilights: |
| | 118 | * ~20 flats with one with peak flux values around ~3-5k counts |
| | 119 | * ~20 flats with peak flux values at 40-50k counts (saturation is 65k). |
| | 120 | * Try exposure times like *0.01s* with very short cycle times. |
| | 121 | * '''Verify again that the spot positions are unchanged''' from flats taken previously (i.e., daily during OPS with dome lights on). If the spots have moved, contact Hanshin to get help updating the PAS pipeline that processes the wavefront sensor images. |
| | 122 | |
| | 123 | === Acquire HPFACQ camera twilights (high flux and low flux) === #hpfacqtwi |
| | 124 | * Start this about 3-5min before sunset |
| 112 | | * Adjust exposure times of the HPF ACQ camera to obtain two sets of twilights: one with peak flux values around ~200 counts and one with peak flux values at ~3000 counts (saturation is 4095 counts). |
| 113 | | |
| 114 | | === Acquire twilights for both guiders in all filters === #gctwi |
| 115 | | * Full instructions are here: [wiki:HetProcedures/RA/probecals] and include how to take the images, how to process them into flats, and how to install them (either temporarily or permanently) into TCS. |
| | 126 | * Adjust exposure times of the HPF ACQ camera to obtain two sets of twilights: |
| | 127 | * ~20 flats with one with peak flux values around ~200 counts |
| | 128 | * ~20 flats with peak flux values at ~3k counts (saturation is 4095). |
| | 129 | * Try exposure times like *0.01s* with very short cycle times. |
| | 130 | * These are not being used yet but will be invaluable for future comparisons |
| | 131 | |
