SIRTF Science Planning

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SIRTF Science Planning Proposal Submission

• Deborah Levine
• SIRTF Science Center
• Operations Planning/Observer Support Lead

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Overview

• Observatory Performance Constraints
• Visibility Constraints
• SIRTF Operations Associated Constraints
• Pointing Tracking Performance
• How to build a SIRTF Proposal
• One-phase process
• SSC Services
• Helpdesk/Observer Support
• Observation Planning Proposal Submission Tools
• SIRTF Observations
• Science User Tools
• Information Documentation

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Overview

• Observatory Performance Constraints
• Visibility Constraints
• SIRTF Operations Associated Constraints
• Pointing Tracking Performance
• How to build a SIRTF Proposal
• One-phase process
• SSC Services
• Helpdesk/Observer Support
• Observation Planning Proposal Submission Tools
• SIRTF Observations
• Science User Tools
• Information Documentation

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Visibility Constraints

• Few pointing constraints in general
• Sun avoidance and solar panel orientation are the
  only hard constraints on the OPZ (Operational
  Pointing Zone)
• constraints evolve slowly
• 35 of the sky is visible at any one time
• 1.5 of the sky at ecliptic poles is continuously
  viewable
• The most highly constrained regions are in the
  ecliptic plane
• visible 40 days at 6 month intervals
• Limited control of focal plane orientation
• Arbitrary focal plane orientation cannot be
  commanded
• sufficient roll control to maintain orientation
  for long maps
• slit orientation on sky will rotate as a function
  of time at high ecliptic latitudes
• depending upon ecliptic latitude of target,
  orientation may be requested by specifying a
  scheduling window
• in the ecliptic plane, the slit orientation is
  fixed

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Inertial Target Visibility
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SIRTF Orbit

• SIRTFs solar orbit projected onto the ecliptic
  plane and viewed from ecliptic North.
• In the rotating frame, the Earth is at the
  origin and the Earth-Sun line is defined as the
  X-axis.

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Visibility of SelectedPlanets Asteroids
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Overview

• Observatory Performance Constraints
• Visibility Constraints
• SIRTF Operations Associated Constraints
• Pointing Tracking Performance
• How to build a SIRTF Proposal
• One-phase process
• SSC Services
• Helpdesk/Observer Support
• Observation Planning Proposal Submission Tools
• SIRTF Observations
• Science User Tools
• Information Documentation

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SIRTF Operations Associated Constraints

• SIRTF Operations Overview
• Only one instrument can be operated at a time
• Instrument campaigns typically 3-10 days
• Scheduling is done a week at a time
• SIRTF will operate autonomously for 12 hours at
  a time
• recorded science data returned twice per day
• ToOs can be updated and executed within 48
  hours of activation
• Previously accepted ToO Proposal
• activated by PI contacting SSC
• Via Directors Discretionary Time
• activated after acceptance of DDT proposal
• Resulting Observational Constraints
• Multi-instrument observations in a short time
  period are not normally possible
• No real-time commanding is available
• Normally observations must be finalized well in
  advance (gt1 week) of execution.

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Overview

• Observatory Performance Constraints
• Visibility Constraints
• SIRTF Operations Associated Constraints
• Pointing Tracking Performance
• How to build a SIRTF Proposal
• One-phase process
• SSC Services
• Helpdesk/Observer Support
• Observation Planning Proposal Submission Tools
• SIRTF Observations
• Science User Tools
• Information Documentation

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Pointing Performance

• Inertial Pointing Requirements
• 5 (1s) blind pointing accuracy
• reposition up to 30, with accuracy 0.4 (1 s)
• stability 0.3 in 200s
• 1.2 (1s) pointing reconstruction
• expected actual blind pointing performance
• Scanning
• requirements to scan 2-20/s, 0.01-1 /s
• stability 0.7 in 15s, 1 in 150s for 2-20/s

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SSO Tracking Approach

• similar to scanning
• linear track segments
• SSO ephemerides maintained on ground
• observer may specify flexible scheduling
  constraints
• track specification calculated at time of
  scheduling
• start point, rate and direction are computed
• track specification is in equatorial J2000
  coordinates
• execution is at scheduled time within 2,-0 s
• PCS catches up with the specified track
• start point is specified
• track command includes a time and vector velocity
• joins track assuming start point corresponds to
  the time in the track command

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SSO Tracking Performance

• Maximum track rate 1/s
• PCS simulations indicate
• blind acquisition accuracy lt 2
• consistent with expected performance on fixed
  targets
• stability better than scan mode requirements
• 0.5 in 1000s
• offset accuracy during tracking 0.4
• consistent with required performance on fixed
  targets
• all AOT modes can be superposed on track
  (including dithers and scans)
• possible exception using an inertial peak-up
  target for a tracked IRS observation

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Overview

• Observatory Performance Constraints
• Visibility Constraints
• SIRTF Operations Associated Constraints
• Pointing Tracking Performance
• How to build a SIRTF Proposal
• One-phase process
• SSC Services
• Helpdesk/Observer Support
• Observation Planning Proposal Submission Tools
• SIRTF Observations
• Science User Tools
• Information Documentation

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How To Build a SIRTF Proposal

• One-phase proposal process
• Proposal text in LATeX template
• Observations Specified in detail at time of
  submission
• ASCII-formatted AORs attached to proposal
• Budget submission after TAC results
• SSC Provides
• Helpdesk/Observer Support
• Observation Planning Proposal Submission Tools
• Information Documentation
• Pipeline Data Products
• Data Analysis Tools
• Archive

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Overview

• Observatory Performance Constraints
• Visibility Constraints
• SIRTF Operations Associated Constraints
• Pointing Tracking Performance
• How to build a SIRTF Proposal
• One-phase process
• SSC Services
• Helpdesk/Observer Support
• Observation Planning Proposal Submission Tools
• SIRTF Observations
• Science User Tools
• Information Documentation

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Observer Support Services at SSC

• Observer Support
• E-mail Helpdesk
• Contact point with community to resolve problems
  related to scheduling, data processing and data
  quality
• for now, use sirtf_at_ipac.caltech.edu
• maximize use of networks and electronic media
  minimize visits to SSC
• Track progress of proposals
• SSC monitors and approves science content of
  schedule
• Monitor completion status of all proposals
• post schedule/observation status
• support observation modification
• Data and Analysis Tool distribution
• Grant Administration

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Overview

• Observatory Performance Constraints
• Visibility Constraints
• SIRTF Operations Associated Constraints
• Pointing Tracking Performance
• How to build a SIRTF Proposal
• One-phase process
• SSC Services
• Helpdesk/Observer Support
• Observation Planning Proposal Submission Tools
• SIRTF Observations
• Science User Tools
• Information Documentation

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What Will Science User Tools Do?

• SIRTF Science User Tools provide 3 major
  integrated services
• Observation Planning
• Proposal Entry Observing Program Modification
• Resource Estimation
• Preview
• Schedule

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What Will Science User Tools Do?

• SIRTF Science User Tools provide 3 major
  integrated services
• Observation Planning
• Proposal Entry Observing Program Modification
• Resource Estimation
• Preview
• Schedule

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Observation Planning

• Next Generation IRSky
• Sky Visualization
• Images ISSA, 2MASS, DSS, etc.
• Overlay Catalog Sources PSC, FSC, ISO Target
  List, SIRTF GTO, 2MASS, etc.
• SIRTF Observing Mode Visualization
• overlay SIRTF focal plane
• orientation at given date
• overlay map geometry and coverage depth
• overlay of SSO tracks
• Target and Background Properties
• Get pixel fluxes
• Retrieve Catalog Data
• Compute background and confusion noise estimates
• Target Visibility

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What Will Science User Tools Do?

• SIRTF Science User Tools provide 3 major
  integrated services
• Observation Planning
• Proposal Entry Observing Program Modification
• Resource Estimation
• Preview
• Schedule

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SIRTF Observations The AOT Concept

• AOTs Astronomical Observation Template
• AOTs are a limited number of observing modes
  which capture range of instrument capabilities
• Observations are specified by selecting an AOT
  and supplying parameter values
• AOR Astronomical Observation Request
• completely specified AOT target information
  scheduling constraints AOR
• Target and Scheduling information is common to
  all AORs
• The Instrument-specific parts of the AOTs are
  addressed in the SI talks
• Usually create AORs by using SIRTF Science User
  Tools
• each AOT is presented as a template-like form
• An AOR can be represented as an ASCII string
• Attached to the proposal
• Can also be edited/created in a text editor

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SIRTF ObservationsTarget Specification

• Several flavors
• single fixed positions
• equatorial, ecliptic, galactic
• clusters
• list of fixed positions
• central position plus a cluster of offsets
• SSOs
• known object specified by Name/NAIF ID
• ephemerides obtained from DASCOM and kept
  current
• spatial or temporal offsets from ephemeris may be
  specified
• tracked or not tracked
• new object specified with rough ephemeris
• contact with SSC to get ephemeris into database
• Note that mapping modes are specified as part of
  the Instrument-specific material

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SIRTF Observations Scheduling Constraints

• Constraints are applied to an AOR or group of
  AORs
• Ordering and Grouping Constraints
• Sequential Group (A then B then C)
• interruption by engineering functions (e.g.
  downlink) optionally allowed
• Follow-on (B n weeks after A)
• Timing Constraints
• Before TIME
• After TIME
• Between TIME1 and TIME2
• if TIME1TIME2, at TIME1 w/in -0s,2s
• multiple windows allowed
• Periodic specification allowed

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Proposal Entry Observing Program Modification

• LATeX Template for Abstract/Scientific
  Justification
• AOT Front End
• Template-like form
• Enter/modify observing-mode specific parameters
• AOR / List Editing
• Construct and maintain an observing program
• Work with lists of AORs
• Enter/modify target information
• Combine target information with AOT-specific
  information to create AORs
• Modify (unscheduled) AORs
• Utilities (duplication, GUI constraint editing,
  etc.)
• ASCII String Import/Export

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What Will Science User Tools Do?

• SIRTF Science User Tools provide 3 major
  integrated services
• Observation Planning
• Proposal Entry Observing Program Modification
• Resource Estimation
• Preview
• Schedule

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Resource Estimation

• Wall-Clock Time Usage Calculation
• based on actual command expansion
• very accurate by GO-1
• includes all overheads internal to AOR
• Sensitivity Estimation
• Uses AOT parameters specified
• Observer supplies fluxes
• includes background model confusion noise
  estimates

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What Will Science User Tools Do?

• SIRTF Science User Tools provide 3 major
  integrated services
• Observation Planning
• Proposal Entry Observing Program Modification
• Resource Estimation
• Preview
• Schedule

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How will Science User Tools Work?

• Java-based GUI Package
• download and install
• can be run as an applet, but slow
• create and work with target lists
• create and modify AORs
• enter a target
• specify AOT parameters
• AOT template-like front end
• combine target and AOT information
• view and maintain observing program
• password login
• view status
• modify (unscheduled) AORs
• consistent with TAC results
• subject to approval

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SUT Preview Startup
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SUT Preview Target Entry
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SUT Preview Target Menu
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SUT Preview Observing Modes
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SUT PreviewAOT- Specific Parameters
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SUT Preview AOR list
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What Will Science User Tools Do?

• SIRTF Science User Tools provide 3 major
  integrated services
• Observation Planning
• Proposal Entry Observing Program Modification
• Resource Estimation
• Preview
• Schedule

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When Will Science User Tools be Available?

• 10/01 GO Cycle 1 Call Issued
• 12/01
• 02/02 Routine Observing Begins
• 03/02 Update for GO-1
• 04/02 GO-1 Proposals Due
• 07/02 GO-1 Selection Complete
• 07/02 Update for GO-2
• 11/02 GO-2 Call Issued
• 01/03 GO-2 Proposals Due
• 04/03 GO-2 Selection Complete

• 03/00 Legacy Version of Tools
• 04/00 Draft Legacy Call Issued
• 06/00 GTO Targets Announced
• 07/00 Legacy Call Issued
• 09/00 Legacy Proposals Due
• 11/00 Legacy Selections Made
• 05/01 Update of Tools
• 08/01 Final Legacy Targets Announced

Launch !!!
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When Will Science User Tools be Available?

• 03/00 Legacy Version of Tools
• Observation Planning
• ISSA plates only
• PSC, FSC, ISO catalogs only
• no visualization for
• MIPS scan map,
• cluster,
• SSO track
• depth of coverage
• Proposal/AOR Entry
• Front End for 4 Initial AOTs a
• 3 Dummy AOTs
• Time/sensitivity estimates
• only for the 4 initial AOTs
• times good to 20
• may be less accurate for tracking
• sensitivity from plots (20)
• bgr estimates from standalone tool

• 03/02 Update for GO-1
• Observation Planning
• 2MASS, DSS, other IRAS, etc images
• SIRTF GTO catalog, 2MASS catalog
• MIPS scan maps clusters depth of field
• SSO tracks
• Time/sensitivity estimates
• Times to 5
• sensitivity from tool (20)
• full resources for SSOs
• 07/02 Update for GO-2
• Proposal/AOR Entry
• all 7 AOTs
• Time/sensitivity estimates
• times to 1

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Overview

• Observatory Performance Constraints
• Visibility Constraints
• SIRTF Operations Associated Constraints
• Pointing Tracking Performance
• How to build a SIRTF Proposal
• One-phase process
• SSC Services
• Helpdesk/Observer Support
• Observation Planning Proposal Submission Tools
• SIRTF Observations
• Science User Tools
• Information Documentation

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Information Provided by SSC(paperless
dissemination)

• Calls for Proposals
• Technical Instrument and Mission Information
• Instrument Observatory User Manuals
• Data Product documentation
• Data analysis information
• Technical reports
• Website
• all documents
• schedules
• observation logs
• configuration information
• e.g. current version of ephemerides in use
• late breaking news
• Newsletters

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Summary

• SIRTF Performance and Observing Constraints
• Minimal Visibility Constraints
• most constrained in ecliptic plane
• Pointing Tracking expected to meet or exceed
  requirements
• blind pointing better than 5, offset accuracy
  0.4
• tracking in linear segments up to 1/s
• (almost) all observing modes supported during
  track
• SIRTF Operations Associated Constraints
• Instrument campaigns
• Autonomous operation advance scheduling
• No real-time commanding
• no on-board ephemerides
• 48 Hour turnaround for ToOs
• SIRTF Proposals
• One-phase process
• SSC Provides
• Helpdesk/Observer Support
• Science User Tools
• Documentation