Changes between Version 8 and Version 9 of docs/CommissioningPlan/P4.9
- Timestamp:
- 02/04/21 15:20:33 (4 years ago)
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docs/CommissioningPlan/P4.9
v8 v9 1 == 4.9 Disk: High-contrast images of circumstellar disks==1 == 4.9 Solar system: Surface heterogeneity of trans-neptunian objects == 2 2 • **Phase** : 4 3 3 • **Status** : Draft 4 4 • **Category** : Science verification / Early science (C8) 5 5 • **Recurrence** : once after the completion of nighttime testing and performance check 6 • **Duration** : 4night(s)6 • **Duration** : 1 night(s) 7 7 **Description** 8 • Disk: High-contrast images of circumstellar disks8 • Solar system: Surface heterogeneity of trans-neptunian objects 9 9 **Prerequisites** 10 10 • Authorize SHARK-NIR on the SX side. 11 11 • Atmospheric conditions: CLEAR 12 12 • Bad pixel map, Background or Dark, Flat-field, distortion map 13 • Cloud Cover : no cloud 14 • Astronomical Seeing : 0. 8" or better13 • Cloud Cover : no clouds 14 • Astronomical Seeing : 0.9" or better 15 15 • Sky Background : Any 16 • Water Vapor : low17 • Timing Windows : better to observe during the passage of the target at the meridian (+/- 1 hour before)18 • Observing Targets : TBD. We will consider stars with H mag in the range 4-12 (typical 7-9), R will have a similar distribution. It would be better to observe target with disk yet observed in NIR)16 • Water Vapor : Low 17 • Timing Windows : moving targets with significant variations of magnitude, angular size and proper motion. 18 • Observing Targets : TBD. Transneptunian small objects. 19 19 • Observing Filters : TBD 20 • Detector Mode, DIT: according to the target brightness20 • Detector Mode, DIT: According to the target brightness 21 21 • Daytime Calibration Data required: dark/background, flat 22 • Nighttime Calibration Data required: flux calibration, star centering22 • Nighttime Calibration Data required: none 23 23 24 24 **Procedure** 25 • After pre-set and acquisition of the target we will run on flux calibration template with the star off-centered from the coronagraph (short template - few minutes). After this, a centering observation follows with the Fourier mode on the DM allowing the creation of four satellite spots (around 5% of the target brightness). Also, this template is short. 26 * We then perform the scientific coronagraphic observation using pupil stabilized observing mode. This observation should be taken during the passage of the star to the meridian to maximize the rotation of the FOV and allowing to implement the ADI. This part should be at least 1:20-1:30 hours long. 27 * The observation is closed running again the centering and flux calibration templates with the same modalities adopted at the beginning of the observations. 28 25 • Non-coronagraphic observations using filed stabilized observing mode. 29 26 **Notes** 30 27