training session, tucson
DESCRIPTION
The Pan-STARRS Moving Object Processing System. Training Session, Tucson. Thanks. LSSTC. Introductions. Policies. Tuesday No cell phones, laptops, etc. Wednesday, Thursday, Friday Whatever Parking Passes. Schedule. Tuesday Morning MOPS Overview Tuesday Afternoon - PowerPoint PPT PresentationTRANSCRIPT
2008 March 11-14 MOPS Training Session, Tucson, AZ 1
Training Session, Tucson
The Pan-STARRSMoving Object Processing System
2008 March 11-14 MOPS Training Session, Tucson, AZ 2
Thanks
• LSSTC
2008 March 11-14 MOPS Training Session, Tucson, AZ 3
Introductions
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Policies
• Tuesday– No cell phones, laptops, etc.
• Wednesday, Thursday, Friday– Whatever
• Parking Passes
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Schedule
• Tuesday Morning– MOPS Overview
• Tuesday Afternoon– MOPS Simulation Training
• Wednesday, Thursday, Friday– MOPS Simulation running
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MOPS Collaborating Institutions
• Institute for Astronomy (IfA)• Large Synoptic Survey Telescope (LSST)• University of Pisa• Jet Propulsion Lab (JPL) • Carnegie Mellon University,
Robotics Institute AUTON Laboratory• Minor Planet Center (MPC)• Spacewatch• University of Helsinki
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MOUs (existent)
• JPLDifferential Orbit Determination & Ephemeris Generation
• LSSTTwo year software engineer (Pierfederici)
• NEODysIOD and 2-night linking
• SpacewatchTargeted follow-up of interesting objects
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MOUs (in negotiations)
•MROTargeted follow-up of interesting objects
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The MOPS Team (IfA)
Robert JedickeMOPS Manager, IfA Specialist
Joe MasieroGraduate Student
Tommy GravJunior Scientific Researcher
Larry DenneauSenior Software Engineer
now at JHU
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The MOPS Team (IfA)
Jim HeasleySenior Professor
David TholenSenior Professor
Richard WainscoatSpecialist, UH Telescope Support, Associate Chair
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The MOPS Team (extended)
Francesco PierfedericiLSST Software Engineer
Daniel ChangUH ICS Graduate Student
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The MOPS Team (External)
Andrea MilaniUniversity of Pisa
Mikko KaasalainenUniversity of Helsinki
Jeremy KubicaCarnegie Mellon Robotics Institute
Steven ChesleyJet Propulson Laboratory
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MOPS Workload
Pan-STARRS Management
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Pan-STARRS Solar System
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• PS4 will find as many asteroids in one lunation as have been identified since the discovery of Ceres in 1801
Asteroids
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PS4 & NEOs
• Tens of thousands of NEOs
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• 10,000,000 MB objects in ten years
PS4 & the Main Belt
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PS4 & Comets
• Pan-STARRS will find ~10X as many comets per year as all existing surveys
• 1,000’s of comets in ten years operation
• INTERSTELLAR ! ! !
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PS4 & TNOs
• ~20,000 TNOs
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PS4 & Distant PlanetsJewitt 2003, ‘Project Pan-STARRS and the Outer Solar System,’ EMP
New Plutos320AU New Earths
620AU (50AU)
New Neptunes1230AU (130AU)
New Jupiters2140AU (340AU)
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PS4 Minor Planet Summary
0
1
2
3
4
5
6
7
8
1 2 3 4 5 6 7 8 9 10
Series1
Series2
Series3
1
10,000,000
1,000,000
100,000
10,000
1,000
100
10
Known
PS 1 Year
PS 10 Years
NEO
/ PH
OM
ain B
eltJovian
Trojans
Oth
er Trojans
Cen
taurs
Com
etsTN
Os
Wid
e TNO
Bin
aries
Com
pan
ions
Interstellar V
isitors
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MOPS Overview
• Identify known objects
• Discover new objects
• Derive observable parameters
• Catalogue objects
• Enable solar system science
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Terminology Review:
• Single Occurrence Transient = SOT– A detection that is not at the same position as any other
known stationary object in the past 30 (TBR) days
• High S/N (HSD) Detection– A detection that has a high probability of being a real
object (~>5)
• Low S/N (LSD) Detection– A detection that has a low probability of being a real
object (~>3)
• Data Collection = DC = DB = Database– A generalized database
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Terminology Review:
• Observing Cycle = OC– Integer number incrementing @ 0 UT on day
closest to full moon
• Synthetic Object– An artificial object with orbital and shape
parameters
• Derived Object– A synthetic or real object and its parameters
derived from observations
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Terminology Review:• Detection (not an SOT)
– A statistically significant collection of pixels after image convolution with a shape kernel
• Tracklet– A set of 2 detections that may be observations
of the same object
• Track– A set of 2 tracklets that may be observations
of the same object
• Orbit– A six parameter representation of the
heliocentric path of an object
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Terminology Review:
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Terminology Review:
Evening Sweet Spot Morning Sweet SpotOpposition
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MOPS Top Level Design
Seamlessly combine existing softwareinto an operational system.
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AttributionAttribution
Intra-night Linking
Intra-night Linking
OrbitDeterminati
on
OrbitDeterminati
on
Inter-night
Linking
Inter-night
Linking
Identification
Identification
PrecoveryPrecovery
TransientDetections
TransientDetections
SyntheticSolar
System
SyntheticSolar
System
Meta-data
Meta-data
DatabaseDatabase
PublishedObjects
PublishedObjects GUI
GUI UsersUsersImpact
RiskAnalysis
Impact Risk
AnalysisMPC
MPC
MOPS Top Level Design
Two-Night Linking
Two-Night Linking
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Transient Detection (IPP)
+
+
+
Combined
4 Telescopes
Static
Transients
Stationary
Moving
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Intra-Night Linking (Tracklets)
First exposureSecond exposure
• 250 real detections / deg2
• 250 false detections / deg2
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Attributions
Legend
TrackletsKnown Objects
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Inter-Night Tracklet Linking (tracks)
FirstNight
SecondNight
ThirdNight
FourthNight
FifthNight
Legend
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Multiple Hypothesis Testing
O(n2)
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kd-tree solution
O(n log n)
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Initial Orbit Determination
Legend
First Night
Third Night
Second Night
Good IOD
Bad IOD
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Differential Orbit Determination
Legend
First Night
Third Night
Second Night
IOD
OD
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Orbit Identification
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PS1 Review: DRM Surveys
DRM = PS1Design Reference Mission
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PS1 Review: DRM Surveys
>61% of time amenable to discovery of solar system objects.
Some of the other surveys can also identify solar system objects.
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PS1 Review: Filters
g r i z y
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PS1 Review: w filter
g r i
w~g+r+i
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PS1 Review: Bandpasses
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PS1 Review: Sensitivities
The trailed NEO single exposure sensitivityis equivalent to V=23 in g, r, and i bands.
The discovery of ‘tracklets’ is equivalentto a 5 sigma limiting magnitude of V=22.8
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PS1 Review: Sky-Plane Tesselation
Outside view of the celestial sky tesselated into 6252 fields. Of these fields, 5464 have boresight centers > -30° Declination.
The 3° field of view of PS1 with an inscribed hexagon of 5.84 square degrees.
The twenty percent overlap from a single tesselation due to the circular field of view.
2008 March 11-14 MOPS Training Session, Tucson, AZ 46
PS1 Review: Sky-Plane Tesselation
Outside view of the celestial sky tesselated into 6252 fields. Of these fields, 5464 have boresight centers > -30° Declination.
The 3° field of view of PS1 with an inscribed hexagon of 5.84 square degrees.
The twenty percent overlap from a single tesselation due to the circular field of view.
2008 March 11-14 MOPS Training Session, Tucson, AZ 47
PS1 Review: Sky-Plane Tesselation
Outside view of the celestial sky tesselated into 6252 fields. Of these fields, 5464 have boresight centers > -30° Declination.
The 3° field of view of PS1 with an inscribed hexagon of 5.84 square degrees.
The twenty percent overlap from a single tesselation due to the circular field of view.
2008 March 11-14 MOPS Training Session, Tucson, AZ 48
Observing Strategy
• Every survey mode obtains at least twoimages at each location separated by a Transient Time Interval (15-30 minutes) serendipitous positions &
colours• Solar system survey re-visits each
location after 3-6 days obtain 3-4 nights/month ~12 day arc
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PS1 Review: 3 Survey
-30 dec
+90 dec
Equator
Opposition15 deg= 1 hr
210 deg = 14 hrs
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PS1 Review: 3 Survey
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PS1 Review: 3 Survey
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PS1 Review: 3 Survey
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PS1 Review: 3 Survey
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PS1 Review: 3 Survey
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PS1 Review: 3 Survey
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PS1 Review: 3 Survey
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PS1 Review: 3 Survey Annual
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PS1 Review: Solar System Survey
multiple filters
60°×120° 3 survey
61% solar system surveying (g+r+i)5% sweet spot surveying (w?)
Dark and grey time
All photometric + non-photometric nights
P&A & SweetSpots w/ TTI paired images
NICE BALANCE BETWEEN SCIENCE SURVEYS
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MOPS TAO Survey Simulations
Evening/Morning sweet-spots84 fields each
~550 deg2 each
Opposition660 fields
~4,360 deg2
TOTAL828 fields
~5,460 deg2
Ecliptic Longitude w.r.t. Opposition
Ecl
ipti
c La
titu
de
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Next Generation Solar System Survey Simulation
NEO rates of motion
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Next Generation Solar System Survey Simulation
NEO longitudinal rates:+0.65˚/day in sweet-spots-0.30˚/day at edge of opp.
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Next Generation Solar System Survey Simulation
RA
Decl
inati
on
First night
Second night
Third night
+0.65˚/day
Sweet-Spot
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Next Generation Solar System Survey Simulation
RA
Decl
inati
on
First night
Second night
Third night
-0.3˚/day
Opposition
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Next Generation Solar System Survey Simulation
2008 March 11-14 MOPS Training Session, Tucson, AZ 65
Next Generation Solar System Survey Simulation
Region
Sch
edulin
g E
ffici
ency
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MOPS Synthetic Solar System
250,000 Near Earth Objects (w/ IEOs, H<25)
10,000,000 Main Belt
320,000 Trojans (Jupiter)
100,000 Trojans (Mars,Saturn,Uranus)
60,000 Centaurs
72,000 Trans-Neptunian Objects
20,000 Scattered Disk Objects
Jupiter Family Comets
Halley Family Comets
10,000 Long Period Comets
0 Xtreme Objects
10,842,000 TOTAL
10,000
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NEO Sky-Plane Density
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Sweet-Spot Motion Vectors
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AttributionAttribution
Intra-night Linking
Intra-night Linking
OrbitDeterminati
on
OrbitDeterminati
on
Inter-night
Linking
Inter-night
Linking
Identification
Identification
PrecoveryPrecovery
TransientDetections
TransientDetections
SyntheticSolar
System
SyntheticSolar
System
Meta-data
Meta-data
DatabaseDatabase
PublishedObjects
PublishedObjects GUI
GUI UsersUsersImpact
RiskAnalysis
Impact Risk
AnalysisMPC
MPC
MOPS Sub-System Efficiency
>99% >98% >90%
>90 %>90 %
?? %
Two-Night Linking
Two-Night Linking?? %
2008 March 11-14 MOPS Training Session, Tucson, AZ 70
AttributionAttribution
Intra-night Linking
Intra-night Linking
OrbitDeterminati
on
OrbitDeterminati
on
Inter-night
Linking
Inter-night
Linking
Identification
Identification
PrecoveryPrecovery
TransientDetections
TransientDetections
SyntheticSolar
System
SyntheticSolar
System
Meta-data
Meta-data
DatabaseDatabase
PublishedObjects
PublishedObjects GUI
GUI UsersUsersImpact
RiskAnalysis
Impact Risk
AnalysisMPC
MPC
MOPS Sub-System Inter-communicationworkingdesigned
Follow-upFollow-up
In design, MOU
Two-Night Linking
Two-Night Linking
2008 March 11-14 MOPS Training Session, Tucson, AZ 71
MOPS Data Collection Interface
http://mopsdc.ifa.hawaii.edu/
Synthetic or Real Data
• MB/100 + everything else
• realistic survey pattern
• astrometric error
• photometric error
• light curves
• false detections
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MOPS Data Collection Interface
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MOPS Data Collection Interface
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MOPS Data Collection Interface
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MOPS Data Collection Interface
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Spacewatch Data
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Spacewatch Data
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MOPS Software Documentation
;)
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MOPS Unit & Simulation Testing
;)
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MOPS Wiki (http://ps1sc.ifa.hawaii.edu/PS1wiki/index.php/MOPS)
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MOPS Timeline
• Operational Readiness Review (ORR)in six months?
• PS1 ORRin eight months?
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MOPS Documentation
• Critical Systems Engineering Documentation
Complete & Evolving
PSDC-510-001: System Concept Definition PSDC-530-001: Software Requirement Specification PSDC-530-002: Algorithm Design Description PSDC-530-003: Software Design Description PSDC-940-005: MOPS-IPP Interface Control Document PSDC-940-007: MOPS-PSPS Interface Control Document PSDC-930-007: MOPS-PSPS Interface Requirement Specification
Not started
o Software Version Descriptiono Sub-system Test Plano Sub-system Maintenance Plano Software User Manual
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MOPS: Documentation
• Supplementary Documentation PSDC-500-001 - Orbit Determination Ephemeris Software PSDC-500-003 - Solar System Survey Simulation PSDC-500-003 – Revised Solar System Survey Simulation PSDC-500-004 - Solar System Model PSDC-500-006 - Sour Spots PSDC-NNN-MMM - Efficiency Determinator Desirements PSDC-NNN-MMM - Efficiency Determinator Design PSDC-NNN-MMM - Installation PSDC-NNN-MMM - Rare Objects PSDC-NNN-MMM - Trail Fitting PSDC-NNN-MMM - Unit and Simulation Testing PSDC-NNN-MMM - Comet Fitting PSDC-NNN-MMM – Data Exchange Standard
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MOPS Publications: Published
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MOPS Publications: In Prep
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MOPS Publications: Future
Pan-STARRS Moving Object Processing System
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Thanks!