PRIMA Astrometry Calibration and Operation Plan VLT-PLA-AOS-15759-0001 - draft

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PRIMA Astrometry Calibration and Operation
PlanVLT-PLA-AOS-15759-0001 - draft

• Scope of the
  Document
• This document shall provide the consortiums
  suggestions as input and support for the official
  PRIMA Astrometric Operations and Calibration Plan
  which falls under the responsibility of the ESO
  PRIMA instrument scientist.
• It gives an overview of the PRIMA Astrometric
  Operation principles and modes and the
  calibration requirements derived in the
  Astrometric Operations and calibration strategy
  (VLT-TRE-AOS-175754-001). It describes in a
  hierarchical view the long-term Astrometric
  Operations and Calibration Plan for PRIMA as well
  as the specific Operations and Calibration Plans
  for special alignments and calibrations and
  standard and non-standard astrometric science
  observations.
• At this draft stage, only a preliminary Table of
  Contents (to outline the structure of the
  document) with keywords and suggestions about the
  contents going into the chapters is outlined, but
  no real specific content yet.

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PRIMA Astrometry Calibration and Operation
PlanVLT-PLA-AOS-15759-0001 - draft

• Table of Contents
• CHAPTER 1 INTRODUCTION
• 1.0 Scope of the document
• 1.1 Acronyms
• CHAPTER 2 PRINCIPLE OF PRIMA ASTROMETRIC
  OPERATION
• CHAPTER 3 PRIMA ASTROMETRIC CALIBRATION
  REQUIREMENTS
• 3.1 General PRIMA alignment and subsystem
  calibration
• 3.2 Standard astrometric calibrations
• 3.3 Target and goal specific calibrations
• 3.4 Long-term stability and consistency checks
• CHAPTER 4 LONG-TERM ASTROMETRIC OPERATIONS AND
  CALIBRATION PLAN
• CHAPTER 5 SPECIFIC ASTROMETRIC OPERATIONS AND
  CALIBRATION PLANS
• 5.1 Initial calibrations after reconfiguration
• 5.2 Standard daily Operations and Calibration
  Plan
• 5.3 Operation Plans for special calibrations
  and regular long-term consistency checks

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PRIMA Astrometry Calibration and Operation
PlanVLT-PLA-AOS-15759-0001 - draft

• Chapter 2 Principle of PRIMA Astrometric
  Operation
• Short description of PRIMA subsystems
• Overwiev of PRIMA operating modes
• 1 Fringe tracking
• 2 Imaging mode
• 3 Differential astrometry
• Operation principle of PRIMA astrometric mode

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PRIMA Astrometry Calibration and Operation
PlanVLT-PLA-AOS-15759-0001 - draft

• Chapter 3 PRIMA Astrometric Calibration
  Requirements
• 3.1 General PRIMA alignment and subsystem
  calibration
• Overview, Summary of Operation and Calibration
  Strategy (VLT-PLA-AOS-15751-001)
• 3.2 Standard astrometric calibrations
• Overview. Zero OPD,
• 3.3 Target and goal specific calibrations
• E.g., hour angle / elevation dependencies,
  color difference target and reference star,
• Trade-offs between science goals, anticipated
  astrometric accuracy, and time effort spent for
  special calibrations,
• 3.4 Long-term stability and consistency checks
• E.g., time scales and conditions for regular
  observations of standard calibrators

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PRIMA Astrometry Calibration and Operation
PlanVLT-PLA-AOS-15759-0001 - draft

• Chapter 4 Long-term Astrometric Operations and
  Calibration Plan
• General outline of long-term PRIMA astrometric
  operation and calibration plan. Hierarchical
  view, to put things in an order, no detailed
  plans (these are in Chapter 5)
• Define at what intervals which special
  calibrations and consistency checks should be
  repeated
• Initial calibrations and alignments after
  reconfigurations (e.g., baseline change,
  reconfiguration of a subsystem, etc.)
• General Operations and Calibration Plan for an
  observing run, i.e, a number of consecutive
  nights with one coherent observing plan
• Daily standard Operations and Calibration Plan

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PRIMA Astrometry Calibration and Operation
PlanVLT-PLA-AOS-15759-0001 - draft

• Chapter 5 Specific Astrometric Operations and
  Calibration Plans
• Flow charts, block diagrams, and explanations
• 5.1 Initial calibrations after reconfiguration
• Special operation and calibration plans for
  initial alignments and subsystem calibrations
• 5.2 Standard daily Operations and Calibration
  Plan
• Flow chart like, e.g., Fig. 5-3 in
  VLT-SPE-ESO-15700-2207
• 5.3 Operation Plans for special calibrations and
  regular long-term consistency checks
• For special observation / calibration blocks
  that differ from standard astrometric science
  operations (e.g. baseline calibration, special
  standards, etc, if different than standard
  astrometric observations)
• 5.4 Modified Operations and Calibration Plans
• Like standard daily operations and calibration
  plan, but including special calibrations for
  non-standard astrometric observations with
  special calibration needs, reduced accuracy
  requirements, etc.

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