Principal: Chad Engelbracht
Deputy: Dean Hines, Dave Frayer, Susan Stolovy, Jeonghee Rho
Data Monkey(s): James Muzerolle, Kate Su, Casey Papovich, Eiichi Egami, Karl Gordon, John Stansberry, Herve Dole
Priority: Necessary
Downlink Priority: Normal
Analysis Time: 1 week
Last Updated:
This tasks compares flux standards of differing brightness on similar backgrounds to check for flux-dependent calibration changes and to begin to screen our sample of potential calibration stars.
Three standards will be observed in each of the 24, 70, and 160µm bands. The standards in each band will be of different brightness but observed against a similar background. The observations will be made using the standard photometry AOR (plus the 24µm stim IER, mips-ier-120), using 3-second DCEs for the bright targets and 10-second DCEs for the faint targets. The 24µm stim IER should be executed before and after the observation of the brightest 24µm standard.
For each array, I have included the star selected for the routine calibration tasks MIPS-92[0,2,4]. This will allow us to directly compare the new standards observed in this task to the same standards observed routinely throughout IOC.
|
Candidate Stars |
|||||
| ID |
band |
type |
flux |
bkgd. |
visibility |
| |
(µm) | |
(mJy) | (MJy/sr) | |
| HD044431 | 24 | G5V | 549 | 16.8 | Feb 11 - Oct 29 |
| HD159330* | 24 | K2III | 515 | 15.3 | Apr 16 - Nov 23 |
| HD217014 | 24 | G2.5I | 31 | 28.1 | Jun 8 - Jul 25 |
| HD004128 | 70 | K0III | 1530 | 9.1 | Jun 15 - Jul 31 |
| HD92305* | 70 | M3III | 860 | 4.5 | CVZ |
| HD044431 | 70 | G5V | 60 | 6.7 | Feb 11 - Oct 29 |
| HD164058* | 160 | K5III | 724 | 7.7 | Feb 09 - Nov 11 |
| HD004128 | 160 | K0III | 270 | 5.3 | Jun 15 - Jul 31 |
| HD105707 | 160 | K2III | 190 | 10.2 | May 31 - Jul 17 |
All observations for this task use the photometry AOT. The bright stars use 3s DCEs while the faint stars use 10s DCEs. 2 cycles are performed at 24µm, 3 at 70µm, and 2 at 160µm in superresolution mode, for a total of 6 cycles at 160µm. The number of images of each source is 30 at 24µm, 30 at 70µm, and 12 at 160µm. The AOT included below takes 1.2 hours. Even with the 24µm stim IER (mips-ier-120) added in (which will only add about 2 minutes), this still takes less time than the 1.38 hours allocated for this task.
# Please edit this file with care to maintain the
# correct format so that SPOT can still read it.
# Generated by SPOT on: 2/19/2003 15:25:28
HEADER: FILE_VERSION=6.2, STATUS = PROPOSAL
AOT_TYPE: MIPS Photometry
AOR_LABEL: MIPSP-0000
AOR_STATUS: new
MOVING_TARGET: NO
TARGET_TYPE: FIXED SINGLE
TARGET_NAME: HD 044431
COORD_SYSTEM: Equatorial J2000
POSITION: RA_LON=5h59m47.22s, DEC_LAT=-84d13m38.6s, PM_RA=-0.0", PM_DEC=-0.0010"
OBJECT_AVOIDANCE: EARTH = YES, OTHERS = YES
MICRON_24: FIELD_SIZE = SMALL, EXPOSURE_TIME = 3, N_CYCLES = 2
MICRON_70: IMAGE_SCALE = DEFAULT, FIELD_SIZE = SMALL, EXPOSURE_TIME = 10, N_CYCLES = 3
SPECIAL: IMPACT = none, LATE_EPHEMERIS = NO,SECOND_LOOK = NO
RESOURCE_EST: TOTAL_DURATION=875.3503, SLEW_TIME=33.0, SETTLE_TIME=22.050303, SLEW_OVERHEAD=180.0, SPECIAL_OVERHEAD=0.0, UPLINK_VOLUME=923, DOWNLINK_VOLUME=10705948, VERSION=S6.5.2
INTEGRATION_TIME: MIPS_24=92.27469,MIPS_70=335.5443,MIPS_160=0.0
AOT_TYPE: MIPS Photometry
AOR_LABEL: MIPSP-0001
AOR_STATUS: new
MOVING_TARGET: NO
TARGET_TYPE: FIXED SINGLE
TARGET_NAME: HD 159330
COORD_SYSTEM: Equatorial J2000
POSITION: RA_LON=17h30m43.57s, DEC_LAT=+57d52m36.6s, PM_RA=0.012", PM_DEC=-0.014"
OBJECT_AVOIDANCE: EARTH = YES, OTHERS = YES
MICRON_24: FIELD_SIZE = SMALL, EXPOSURE_TIME = 3, N_CYCLES = 2
SPECIAL: IMPACT = none, LATE_EPHEMERIS = NO,SECOND_LOOK = NO
RESOURCE_EST: TOTAL_DURATION=349.4, SLEW_TIME=7.2, SETTLE_TIME=5.0, SLEW_OVERHEAD=180.0, SPECIAL_OVERHEAD=0.0, UPLINK_VOLUME=594, DOWNLINK_VOLUME=2537774, VERSION=S6.5.2
INTEGRATION_TIME: MIPS_24=92.27469,MIPS_70=0.0,MIPS_160=0.0
AOT_TYPE: MIPS Photometry
AOR_LABEL: MIPSP-0002
AOR_STATUS: new
MOVING_TARGET: NO
TARGET_TYPE: FIXED SINGLE
TARGET_NAME: HD 217014
COORD_SYSTEM: Equatorial J2000
POSITION: RA_LON=22h57m27.98s, DEC_LAT=+20d46m07.8s, PM_RA=0.208", PM_DEC=0.061"
OBJECT_AVOIDANCE: EARTH = YES, OTHERS = YES
MICRON_24: FIELD_SIZE = SMALL, EXPOSURE_TIME = 10, N_CYCLES = 2
SPECIAL: IMPACT = none, LATE_EPHEMERIS = NO,SECOND_LOOK = NO
RESOURCE_EST: TOTAL_DURATION=569.4, SLEW_TIME=7.2, SETTLE_TIME=5.0, SLEW_OVERHEAD=180.0, SPECIAL_OVERHEAD=0.0, UPLINK_VOLUME=594, DOWNLINK_VOLUME=6126130, VERSION=S6.5.2
INTEGRATION_TIME: MIPS_24=312.47565,MIPS_70=0.0,MIPS_160=0.0
AOT_TYPE: MIPS Photometry
AOR_LABEL: MIPSP-0003
AOR_STATUS: new
MOVING_TARGET: NO
TARGET_TYPE: FIXED SINGLE
TARGET_NAME: HD 004128
COORD_SYSTEM: Equatorial J2000
POSITION: RA_LON=0h43m35.37s, DEC_LAT=-17d59m11.8s, PM_RA=0.233", PM_DEC=0.033"
OBJECT_AVOIDANCE: EARTH = YES, OTHERS = YES
MICRON_70: IMAGE_SCALE = DEFAULT, FIELD_SIZE = SMALL, EXPOSURE_TIME = 3, N_CYCLES = 3
MICRON_160: FIELD_SIZE = SMALL, EXPOSURE_TIME = 3, N_CYCLES = 2
MICRON160_MAP: ROWS=1, COLS=3, ROW_STEP=3/4, COL_STEP=1/8, N_MAP_CYCLES=1
SPECIAL: IMPACT = none, LATE_EPHEMERIS = NO,SECOND_LOOK = NO
RESOURCE_EST: TOTAL_DURATION=916.0523, SLEW_TIME=60.0, SETTLE_TIME=45.852283, SLEW_OVERHEAD=180.0, SPECIAL_OVERHEAD=0.0, UPLINK_VOLUME=1571, DOWNLINK_VOLUME=10489462, VERSION=S6.5.2
INTEGRATION_TIME: MIPS_24=0.0,MIPS_70=100.6633,MIPS_160=12.582912
AOT_TYPE: MIPS Photometry
AOR_LABEL: MIPSP-0004
AOR_STATUS: new
MOVING_TARGET: NO
TARGET_TYPE: FIXED SINGLE
TARGET_NAME: HD 92305
COORD_SYSTEM: Equatorial J2000
POSITION: RA_LON=5h07m34.03s, DEC_LAT=-63d23m58.8s, PM_RA=0.013", PM_DEC=-0.045"
OBJECT_AVOIDANCE: EARTH = YES, OTHERS = YES
MICRON_70: IMAGE_SCALE = DEFAULT, FIELD_SIZE = SMALL, EXPOSURE_TIME = 3, N_CYCLES = 3
SPECIAL: IMPACT = none, LATE_EPHEMERIS = NO,SECOND_LOOK = NO
RESOURCE_EST: TOTAL_DURATION=398.3, SLEW_TIME=7.2, SETTLE_TIME=5.0, SLEW_OVERHEAD=180.0, SPECIAL_OVERHEAD=0.0, UPLINK_VOLUME=645, DOWNLINK_VOLUME=3383698, VERSION=S6.5.2
INTEGRATION_TIME: MIPS_24=0.0,MIPS_70=100.6633,MIPS_160=0.0
AOT_TYPE: MIPS Photometry
AOR_LABEL: MIPSP-0005
AOR_STATUS: new
MOVING_TARGET: NO
TARGET_TYPE: FIXED SINGLE
TARGET_NAME: HD 164058
COORD_SYSTEM: Equatorial J2000
POSITION: RA_LON=17h56m36.37s, DEC_LAT=+51d29m20.0s, PM_RA=-0.0090", PM_DEC=-0.023"
OBJECT_AVOIDANCE: EARTH = YES, OTHERS = YES
MICRON_160: FIELD_SIZE = SMALL, EXPOSURE_TIME = 3, N_CYCLES = 2
MICRON160_MAP: ROWS=1, COLS=3, ROW_STEP=3/4, COL_STEP=1/8, N_MAP_CYCLES=1
SPECIAL: IMPACT = none, LATE_EPHEMERIS = NO,SECOND_LOOK = NO
RESOURCE_EST: TOTAL_DURATION=679.744, SLEW_TIME=31.2, SETTLE_TIME=25.444033, SLEW_OVERHEAD=180.0, SPECIAL_OVERHEAD=0.0, UPLINK_VOLUME=1242, DOWNLINK_VOLUME=7105764, VERSION=S6.5.2
INTEGRATION_TIME: MIPS_24=0.0,MIPS_70=0.0,MIPS_160=12.582912
AOT_TYPE: MIPS Photometry
AOR_LABEL: MIPSP-0006
AOR_STATUS: new
MOVING_TARGET: NO
TARGET_TYPE: FIXED SINGLE
TARGET_NAME: HD 105707
COORD_SYSTEM: Equatorial J2000
POSITION: RA_LON=12h10m07.48s, DEC_LAT=-22d37m11.2s, PM_RA=-0.072", PM_DEC=0.011"
OBJECT_AVOIDANCE: EARTH = YES, OTHERS = YES
MICRON_160: FIELD_SIZE = SMALL, EXPOSURE_TIME = 3, N_CYCLES = 2
MICRON160_MAP: ROWS=1, COLS=3, ROW_STEP=3/4, COL_STEP=1/8, N_MAP_CYCLES=1
SPECIAL: IMPACT = none, LATE_EPHEMERIS = NO,SECOND_LOOK = NO
RESOURCE_EST: TOTAL_DURATION=679.744, SLEW_TIME=31.2, SETTLE_TIME=25.444033, SLEW_OVERHEAD=180.0, SPECIAL_OVERHEAD=0.0, UPLINK_VOLUME=1242, DOWNLINK_VOLUME=7105764, VERSION=S6.5.2
INTEGRATION_TIME: MIPS_24=0.0,MIPS_70=0.0,MIPS_160=12.582912
Array Data Desired:
All Arrays
Data Reformatting Option:
Special Instructions:
The data will be analyzed in a manner identical to the individual flux calibration tasks MIPS-920, MIPS-922, and MIPS-924. This will generate flux conversion factors for the 7 stars. The conversion factors will be compared to assess the effects of flux levels on the measurements. As we are only measuring 3 stars per band, the report will not go into great detail on linearity effects. We will also be able to screen out any targets with obvious debris disks or other factors that make them unsuitable as calibrators.
If the test fails, it should be repeated.