| 1 | == P2.6 Measurement of NCPA == |
| 2 | • **Phase** : 2 |
| 3 | • **Status** : Draft |
| 4 | • **Category** : Daytime calibration (C3) |
| 5 | • **Recurrence** : after instrument installation at telescope platform |
| 6 | • **Duration** : 3 hour(s) |
| 7 | **Description** |
| 8 | • Measure the Non-Common Path Aberrations (NCPA). |
| 9 | **Prerequisites** |
| 10 | • RR mounted and SHARK-NIR aligned to telescope. |
| 11 | **Procedure** |
| 12 | • In closed-loop, we optimize the PSF shape on SCICAM using the trial & error algorithm used by LBTO team during LUCI calibrations changing M2 reference shape applying modes coefficients. |
| 13 | • We also perform the phase-diversity tests using the same light source and look at the NCPA output produced. |
| 14 | • Depending on the two results and the quality of PSF, we may choose one or the other or the combination of both. |
| 15 | • Note that we may do this for different elevation angles. |
| 16 | **Success criteria** |
| 17 | • NCPA estimated and applied on the ASM? (how often we do this? Every night? |
| 18 | • Satisfactory PSF quality with closed-loop and get a new and improved daytime telescope model for SHARK-NIR? |
| 19 | **Notes** |
| 20 | • See activity 8.1 in AD4 for more details. |
| 21 | **LBTO support** |
| 22 | • Mount the RR on SX |
| 23 | • Support from LBTI? |
| 24 | **Associated SHARK-NIR personnel** |
| 25 | • JF, LM, MdP, MM (from AZ) |
| 26 | **Date performed and by whom** |