Changes between Version 24 and Version 25 of docs/CommissioningPlan/P2.7

Timestamp:

09/29/22 10:57:19 (2 years ago)

Author:

kradhakrishnan

Comment:

--

docs/CommissioningPlan/P2.7

@@ -8 +8 @@
 
 **Description**
-- SHARK-NIR system-level characterization and optimization as a function of the telescope elevation. Checking the pointing offset between SHARK-NIR and SOUL-AO. SOUL-AO tests. Measure the Non-Common Path Aberrations (NCPA).
+- SHARK-NIR system-level characterization and optimization as a function of the telescope elevation. Checking the pointing offset between SHARK-NIR and SOUL-AO. SOUL-AO tests. Measure the Non-Common Path Aberrations (NCPA). Note that for the Phase Diversity (PD) algorithm, we will apply the defocus with the ASM.
 
 **Prerequisites**
@@ -27 +27 @@
    3. Check the PSF position at the SCICAM. Move the SOUL WFS stages to position the star of the SCICAM center. The stage positions should be the same (or very close) as the values after the alignment of SHARK-NIR to the telescope.
    4. For the AO loop closed that produces the best PSF at the pin of the pyramid of the SOUL WFS, save the ASM shape. Keep that shape steady on ASM.
-   5. Perform the phase diversity algorithm with ALPAO DM. The ASM introduces the defocus by moving the LGS WFS in the focal direction. 
+   5. Perform the phase diversity algorithm by applying to the ALPAO DM the best shape for the SHARK-NIR PSF. The ASM introduces the defocus by moving the LGS WFS in the focal direction. 
    6. Ideally, contrast is the metric to be used to find the best NCPA shape for the ALPAO DM. However, since the contrast is directly related to the PSF optical quality at the coronagraphic focal plane, which is the same (or very close to the same) at the scientific focal plane, we will use the SCICAM PSF images to determine the aberrations and, therefore to find the best shape to apply on the ALPAO DM.
    7. Only for Zenith angle, the following tests are also performed: