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OM
CCF
Status
Overview
SAS
related
dataset
purpose
accuracy
status&
comments
Boresight
OM
boresight
2
arcsec
variable
AstroMet
OM
Distortion
arcsec
accuracy
best
V,
worse
else
LargeScaleSens
global
flatfield
unity
straylight
problem,
relative
only
PixToPixSens
small
scale
flatfield
30%
needs
updating,
relative
only
PhoToNat
Hardware
charcteristics
ok
no
adjustement
expected
ColorTrans
Zero
point
&
throughput
0.2
mag
BadPix
bad
pixel
edge
&
6
dim
areas
obvious
badpixel
included
PhotToLam
grism
throughput
­
grism
got
low
priority
assigned
PixToLam
wavelength
scale
­
grism
got
low
priority
assigned
StrayLight
prediction
of
straylight
features
­
complex
analysis
PSF1DRB
psf
shape
Gaussian
PSF
with
CSL
FWHM
analysis
in
progress
HKParmInt
HKD
limits
­
needed?
OM
Calibration
Meeting,
October
2000
­
RM

OM CCF Status Detail I
ffl all OM CCFs required by the SAS pipeline are present
ffl crucial files for scientific analysis were updated reflecting inflight perfor­
mance:
-- AstroMet (position)
-- Boresight (position)
-- PhotToNat (flux)
-- ColorTrans (flux)
-- BadPix (cosmetics: reduced sensitivity, edge emission)
ffl other updated files reflecting inflight performance:
-- Darkframe
ffl insufficient or not updated files for scientific analysis
-- LargeScaleSens
-- PixToPixSens
-- PSF1DRB
-- PhotToLam (grism not systematically analysed, FW position)
-- PixToLam (dito)
ffl not updated auxiliary and instrument performance files
-- HKParmInt
-- Quickmag
-- Zodiacal
-- DiffuseGala
OM Calibration Meeting, October 2000 ­ RM

OM CCF Status Detail II
ffl Boresight:
-- accurate to 2­3 arcsec level
-- is a new SAS functionality needed to fit boresight?
ffl OM distortion map: AstroMet
-- better than 1 arcsec RMS accuracy achieved in V
-- improvements on other filter needed
ffl Flatfield response: LargeScaleSens and PixToPixSens
-- current CCF contains unity flatfield files
-- straylight problem affects LargeScaleSens
-- internal flats offer relative monitoring of sensitivity
but only after Jul 2000
OM Calibration Meeting, October 2000 ­ RM

OM CCF Status Detail III
ffl Hardware characterization: PhotToNat
-- file in place and is not supposed to be changed (except: PHDFRAC)
ffl OM zero points and colour tranformation: ColorTrans
-- refined throughput analysis
-- update of CCF file expected with ground measurements
ffl OM bad pixel map: BadPix
-- preflight edge emission
-- six areas of reduced sensitivity
ffl OM PSF: PSF1DRB
-- preflight gaussian shape
-- not crucial for pipeline tasks (?)
-- analysis commenced
\Lambda PSF width does not reflect results from focus test
\Lambda largescale low level out of focus image
OM Calibration Meeting, October 2000 ­ RM

OM CCF Status Detail IV
ffl OM HKD limits: HKParmInt
-- currently only dummy file (check DPU switched on)
ffl Grism wavelenth scale and throughput: PixToLam and PhotToLam
-- scale exist, but not implemented
-- low priority assigned to these files as currently no pipeline processing
envisaged
-- no SAS tasks available yet
-- no CAL available
ffl OM straylight file: StrayLight
-- no CCF file/SAS task defined sofar
-- algorimth needed
OM Calibration Meeting, October 2000 ­ RM