MIPS-265 IOC Task Cookbook:
Confusion Limits Determination

Principal: Herve Dole
Deputy: Eiichi Egami
Data Monkey(s): Not Me ! Please no !
Priority:
Downlink Priority: Normal
Analysis Time:
Last Updated: 14-Aug-2003; 25-jun-2003; 24-Jun-2003; 04-Mar-2003
Cookbook Quick Navigation
Objective Description Data Data
Reformatting		 Dependencies Calibration
Dependencies
Outputs Analysis Software Actions Failure Additional

Objective

Measure the confusion due to 1) extragalactic sources at low background and 2) galactic cirrus at medium background. Do scan maps at 24, 70 and 160.

Description

Acquire one Medium Scan map at 24, 70 and 160: 1 degree and 8 scan legs, with half array overlap between legs to ensure redundancy at 160. The first field is low background. The second field is medium background with a known galactic cirrus.
1 degree scale is mandatory 1) to avoid extragalactic source clustering biases (aka cosmic variance) and 2) to check the properties of the measured cirrus with previous knowledge (e.g IRAS). Redundancy is mandatory to ensure a full 160 coverage.
Confusion will be derived in the maps 1) with extragalactic source density (source counts) and 2) aperture photometry measurements for the cirrus.

Data Collected

For each field: AOR for the LOW BACKGROUND FIELD: FIRBACK Marano Field (Dole et al, 2001). AOR for the MEDIUM BACKGROUND FIELD: Close to Draco Cirrus Field (Kiss et al, 2002). 

#  Please edit this file with care to maintain the
#  correct format so that SPOT can still read it.
#  Generated by SPOT on:  8/14/2003     11:32:36

HEADER: FILE_VERSION=7.0, STATUS = PROPOSAL

      AOT_TYPE:  MIPS Scan Map
     AOR_LABEL:  MIPS-IOC-265-lowbkg
    AOR_STATUS:  new

 MOVING_TARGET:  NO
   TARGET_TYPE:  FIXED SINGLE
   TARGET_NAME:  Firback South Marano
  COORD_SYSTEM:  Equatorial  J2000
      POSITION:  RA_LON=3h09m20.00s,  DEC_LAT=-54d56m00.0s
OBJECT_AVOIDANCE:  EARTH = YES, OTHERS = YES

    REQUIRE_160: YES
      SCAN_RATE: medium
 FAST_RESET_160: NO
      STEP_SIZE: TURNAROUND=148", FORWARD=148"
    N_SCAN_LEGS: 8
   N_MAP_CYCLES: 1
SCAN_LEG_LENGTH: 1.0
MAP_CENTER_OFFSET: CROSS_SCAN = 0, IN_SCAN = 0
SPECIAL: IMPACT = none, LATE_EPHEMERIS = NO,SECOND_LOOK = NO
RESOURCE_EST: TOTAL_DURATION=7246.6, SLEW_TIME=116.8, SETTLE_TIME=183.0, SLEW_OVERHEAD=180.0, SPECIAL_OVERHEAD=0.0, UPLINK_VOLUME=1299, DOWNLINK_VOLUME=143165336, VERSION=S7.5.1
INTEGRATION_TIME: MIPS_24=41.9,MIPS_70=41.9,MIPS_160=4.2





      AOT_TYPE:  MIPS Scan Map
     AOR_LABEL:  MIPS-IOC-265-medbkg
    AOR_STATUS:  new

 MOVING_TARGET:  NO
   TARGET_TYPE:  FIXED SINGLE
   TARGET_NAME:  Draco
  COORD_SYSTEM:  Equatorial  J2000
      POSITION:  RA_LON=16h44m00.00s,  DEC_LAT=+60d45m00.0s
OBJECT_AVOIDANCE:  EARTH = YES, OTHERS = YES

    REQUIRE_160: YES
      SCAN_RATE: medium
 FAST_RESET_160: NO
      STEP_SIZE: TURNAROUND=148", FORWARD=148"
    N_SCAN_LEGS: 8
   N_MAP_CYCLES: 1
SCAN_LEG_LENGTH: 0.75
MAP_CENTER_OFFSET: CROSS_SCAN = 0, IN_SCAN = 0
SPECIAL: IMPACT = none, LATE_EPHEMERIS = NO,SECOND_LOOK = NO
RESOURCE_EST: TOTAL_DURATION=6312.2, SLEW_TIME=126.4, SETTLE_TIME=183.0, SLEW_OVERHEAD=180.0, SPECIAL_OVERHEAD=0.0, UPLINK_VOLUME=1299, DOWNLINK_VOLUME=122829344, VERSION=S7.5.1
INTEGRATION_TIME: MIPS_24=41.9,MIPS_70=41.9,MIPS_160=4.2

Data Reformatting Requirements

Array Data Desired:

All Arrays

Data Reformatting Option:

Special Instructions:

Task Dependencies

Calibration Dependencies

Output and Deliverable Products

  • individual filtered scans at 24, 70 and 160
  • (if possible: a full map at 24, 70 and 160)
  • source density versus flux table at 24, 70 and 160
  • comparison with models of Dole, Lagache, Puget 2003 ApJ 585, 617
  • sigma for cirrus confusion
  • comparison with Helou & Beichman (1990)

    Data Analysis

    A. Confusion due to Extragalactic Sources. B. Confusion due to Galactic Cirrus.

    Software Requirements

    Actions Following Analysis

    At each wavelength:

    Failure Modes and Responses

    Additional Notes