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Index

A

abbreviations
in this manual 257
ACCUM 139
dark current calibration 130
data format 238
function of 120
minimum time 122
mode, described 27, 121
multiple reads 122
overheads 135
accumulate mode, see "ACCUM"
accuracy
expected 243
ACQ
data format 238
function of 120
mode, described 130
acronyms
used in this manual 257
amplifier glow
described 108
aperture
defining 62
NIC1 through NIC3-FIX 63
NIC2-ACQ 68
NIC2-CORON 68
archive
calibrated data 231
file formats 16
reference files 232
array
comparison to CCD 29
dataset 238
read 121
reset 121
artifacts
amplifier glow 108
shading 107
association
datasets
atomic lines 220
attached parallel 30

B

background
ground-based 31
infrared 31
low sky 35
spectroscopy 83
stability 244
thermal 32, 106, 137, 138, 140, 147, 243
zodiacal light 32
background radiation
in exposure calculations 90
SMOV measurements 146
bad pixels
detector 106
transient 62
bandpass
see "filter"
bright object mode, see "BRIGHTOBJ"
bright objects
overexposure 109
BRIGHTOBJ
data format 238
exposure times 262
function of 120
mode, described 261
overheads 135

C

calibration
calnica 234
calnicb 237
coronography 244
cycle 7 goals 244, 245
described 231
detector performance 244
expected accuracy 243
flat field 111
grism 87
photometric 244, 252-255
point spread function 244
reference files 232
software 234
sources 245
stars
P330E 254
stars, G191B2B 253
stars, GD153 253
stars, GD71 253
stars, H243 253
stars, P041-C 254
stars, P177D 254
unsupported modes 16
calnica task 234
calnicb task 237
camera
attached parallel 30
change, overhead 139
changing, overhead 135
coronography 67
field of view 25
filters 40, 161
focus 49
focus, NIC3 55
image quality 49
orientation 26
overhead 135
polarimetry 73
resolution 25
spectroscopy, camera 3 79
camera 1 through camera 3
see "camera" and "filter"
CCD
compared to NICMOS array 29
chop
described 146
examples 153
overhead 135
pattern 149, 151
size 159
SPIRAL-DITH-CHOP 141
TWO-CHOP 139
CO lines 220
color
effect on sensitivity 116
coordinate system
NICMOS 63
coronograph
target acquisition overhead 134
coronography 19
aperture 63
coronographic mask 68
coronographic spot 67
expected accuracy 244
image contrast, PSF centering 70
target acquisition 68, 130
cosmic rays
effect 110
RAMP 266, 271
uncertainty 243
Cycle 7
calibration goals 244

D

dark current
calibration in ACCUM or MULTIACCUM 130
detector 27, 106
exposure times 131
RAMP 270
data
associations
calibration process 231
described 232, 238
error array 239
format 238
integration time array 240
quality 239
quality flags 239
readout, overhead 135
samples array 239
science dataset, structure 132
science image 239
definitions
terms used in this manual 257
detector
array reset 121
arrays 105, 108
artifacts 107
bad pixels 106
bias 121
dark current 27, 106, 130, 244
described 27, 105
DQE 106
dynamic range 106, 109
flat fields 110, 111, 116, 244
flat fields, for spectroscopy 118
flat fields, photometric accuracy 116, 118
flat fields, wavelength dependence 114, 118
intra-pixel sensitivity 110
large scale variation 111
linearity 106, 109
pixel response 110
pixel-to-pixel variation 111, 113, 116
quadrants 105
quantum efficiency 106, 115
readnoise 106, 108
readout modes 27, 119
response 106, 109, 115
saturation 106, 109
shading 29, 130, 244
dewar 22
dither
described 146, 150
examples 153
overhead 135
pattern 149, 150
size 159
SQUARE-WAVE-DITH 138
XSTRIP-DITH 139
documentation
World Wide Web 9
DQE 106
dynamic range
detector 106

E

EIGHT-CHOP 151
emission lines
exposure times 92
epsilon diagram 46
epsilon diagrams 83, 161
error array
described 239
examples
chop 153
dither 153
signal-to-noise calculation 97
exclusion
diagrams, described 48
F164N, camera 3 198
F166N, camera 3 199
F175W, camera 3 200
F187N, camera 3 201
F190N, camera 3 202
F196N, camera 3 203
F200N, camera 3 204
F212N, camera 3 205
F215N, camera 3 206
F222M, camera 3 207
F240M, camera 3 208
grisms 83-??
polarizers 76-??
exclusion curves 99
exposure (see "data" and "imaging")
exposure times
background radiation 90, 93
BRIGHTOBJ 262
calculating 89, 94
calculating by hand, emission line source 101
calculating by hand, line plus continuum 102
calibration star 101
dark current 131
emission line contribution 92
emission line source 101
exclusion diagrams, using 99
grism observations 103
high background 98
instrument parameters 94
instrumental factors 90
line plus continuum source 102
low background 98
overhead 134
signal-to-noise, calculating 92
software tools 96
World Wide Web 96
extended source
background subtraction 147
exclusion diagrams 48
sensitivity curves 46

F

F090M through F237M
see "filter"
FAST
overheads 135
readout mode 130
readout mode, described 121
field of view
cameras 25
field offset mirror
optical path 24
PSF 61
file
data formats 16, 238
filter
available, list of 40
bandpasses 41, 43, 45
camera 1 40
camera 2 42
camera 3 44
described 25, 40
F090M, camera 1 161
F095N, camera 1 162
F097N, camera 1 163
F108N, camera 1 164
F108N, camera 3 193
F110M, camera 1 165
F110W, camera 1 166
F110W, camera 3 194
F113N, camera 1 167
F113N, camera 3 195
F11W, camera 2 177
F140W, camera 1 168
F145M, camera 1 169
F150W, camera 3 196
F160W, camera 1 170
F160W, camera 2 178
F160W, camera 3 197
F164N, camera 1 171
F164N, camera 3 198
F165M, camera 1 172
F165M, camera 2 179
F166N, camera 1 173
F166N, camera 3 199
F170M, camera 1 174
F171M, camera 2 180
F175W, camera3 200
F180M, camera 2 181
F187N, camera 1 175
F187N, camera 2 182
F187N, camera 3 201
F187W, camera 2 183
F190N, camera 1 176
F190N, camera 2 184
F190N, camera 3 202
F196N, camera 3 203
F200N, camera 3 204
F204M, camera 2 185
F205W, camera 2 186
F207M, camera 2 187
F212N, camera 2 188
F212N, camera 3 205
F215N, camera 2 189
F215N, camera 3 206
F216N, camera 2 190
F222M, camera 2 191
F222M, camera 3 207
F237M, camera 2 192
F240M, camera 3 208
G141 85
G206 86
leaks, out of band 48
nomenclature 40
overheads 134
POL0L 78
POL0S 77
POL120L 78
POL120S 77
POL240L 78
POL240S 77
polarimetry 76
red leaks 48
sensitivity curves, polarizers 76
spectroscopy 40, 83
filter sensitivity parameters 94-95
FITS
data format, handling 241
NICMOS data format 238
flatfield
characteristics 111
response 111
flux
Jansky 211
magnitude systems 210
magnitudes, zero point 35
unit conversion 35, 211
unit conversion, examples 220
units 4, 35, 209, 211
flux calibration
standard stars 252
focus
camera 1 49
camera 2 49
camera 3 55
pupil alignment mechanism 49
FOM
see "field offset mirror"
FOUR-CHOP 151

G

glow
amplifier 108
grism
analysis software 87
B continuum, F150W, camera 3 196
described 78
exposure times 103
flat fielding 118
spectroscopy 19, 78
spectroscopy, multi-object 118
grisms
available 44
guide star
acquisition overhead 134
reacquisition overhead 134

H

helium lines 220
Help Desk
contacting 8
high background
signal-to-noise 98
hydrogen lines 220

I

image
quality 49
imaging
described 19
filters 40, 161
polarimetry 19
sensitivity 28, 46
sensitivity limits 19
instrument 63
camera orientation 26
capabilities 26
compared to WFPC2 or STIS 26
coordinate system 63
design 20
field offset mirror 24
filters 4
optics 22
overview 3, 20
polarization 73
polarizers 73
pupil alignment mechanism 24
RAMP mode 15
setup time, overhead 134
unsupported modes 16
integration time
exclusion curves, using 99
integration time array
described 240
integration times 89

L

leaks
filters 48
Level 245
linearity
detector 106
lines
atomic 220
molecular 220
low background
signal-to-noise 98
LOW-SKY
background option 35

M

magnitude
CIT system 213
flux conversion 212
infrared system 210
UKIRT system 213
zero points 213
modes
detector readout 27, 119
unsupported 16
molecular lines 220
mosaic
example overhead 138
overheads 141
motion
telescope 147
MULTIACCUM
dark current calibration 130
data format 240
dynamic range 125
function of 120
mode, described 27, 124
overhead 137, 139
overheads 135
SAMP-TIME 124
multi-object spectroscopy 80
multiple accumulate mode, see "MULTIACCUM"

N

NIC1 through NIC3-FIX
see "aperture" 63
NICMOS
see "instrument"
NICMOS-ORIENT 64
non-destructive readout 121, 125
NREAD 122
NSAMP 125, 264

O

observation
attached parallel 30
coronographic, planning 71
grism, planning 81
polarimetry, planning 75
observations
planning 35
ONE-CHOP 151
operating mode
overheads 134
optical elements
filters 40, 161
grisms 44, 78
optics
dewar 22
OPUS (see "calibration" and "pipeline")
orbits
example calculation, map 138
example, change camera 139
required, calculating 136
ORIENT 64
orientation
described 64
overexposure 109
overhead 139
camera change 135
chopping 135
coronography 136
data management 135
dithering 135
example, camera change 139
example, map 138, 141
example, polarimetry 138
examples 136
exposure 134
generic 134
guide star acquisition 135
in observations 133
instrument setup 135
instrument-specific 134
observatory level 134
slews 135
overheads
POSTARG 135

P

PAM
see "pupil alignment mechanism"
parallels
attached 30
pattern
chop 141, 146
chop size 159
dither 141, 146, 150
dither size 159
EIGHT-CHOP 151
FOUR-CHOP 151
number of steps 159
ONE-CHOP 151
orient 159
overhead 139
overheads 141
parameters 159
SPIRAL-DITH 150
SQUARE-WAVE-DITH 150
TWO-CHOP 151
XSTRIP-DITH 150
YSTRIP-DITH 150
photometry
calibration 252-255
expected accuracy 244
pipeline
calibration process 231
re-engineering changes 234
point source
background subtraction 147
exclusion diagrams 48
sensitivity curves 46
polarimetry 19
example 138
expected accuracy 244
filters 40
instrumental polarization 73
polarization angle 74
polarization degree 74
polarized intensity 74
sensitivity 46
spectral coverage 40, 73
Stokes parameters 73
polarizers
camera 1 77
camera 2 78
described 73
POS TARG 158
POSTARG 135
proposal
instructions 7
overheads, exposure 134
submission process 7
unsupported modes 16
PSF
field offset mirror 61
pupil alignment mechanism
focus 49
optical path 24

Q

quality
image 49
quality flags array
described 239

R

RAMP
cosmic rays 266, 271
dark current 270
data format 238
function of 120
limitations 270
readout mode, described 15, 264
saturation 266
readnoise
described 108
detector 106
readout
ACCUM 122
ACCUM mode 120
ACQ mode 120, 130
BRIGHTOBJ mode 120, 261
BRIGHTOBJ, exposure times 262
FAST mode 130
modes, detector 119
MULTIACCUM mode 120, 124
non-destructive 121
NSAMP 125
overhead 135
RAMP mode 120, 264
SAMP-TIME 124
SLOW mode 130
readout modes
detector 27
reference files
calibration 232
resolution
cameras 25
re-use target acquisition
described 30

S

SAM
see "small angle motion" 62
samples array
described 239
SAMP-TIME 124
saturation
detector 106
programs 96
RAMP 266
science image
described 239
see also "data"
sensitivities
calculating 92
sensitivity
curves 46
F090M, camera 1 161
F095N, camera 1 162
F097N, camera 1 163
F108N, camera 1 164
F108N, camera 3 193
F110M, camera 1 165
F110W, camera 1 166
F110W, camera 2 177
F110W, camera 3 194
F113N, camera 1 167
F113N, camera 3 195
F140W, camera 1 168
F150W, camera 3 196
F160W, camera 1 170
F160W, camera 2 178
F160W, camera 3 197
F164N, camera 1 171
F164N, camera 3 198
F165M, camera 1 172
F165M, camera 2 179
F166N, camera 1 173
F166N, camera 3 199
F170M, camera 1 174
F171M, camera 2 180
F175W, camera 3 200
F187N, camera 1 175
F187N, camera 2 182
F187N, camera 3 201
F187W, camera 2 183
F190N, camera 1 176
F190N, camera 2 184
F190N, camera 3 202
F196N, camera 3 203
F200N, camera 3 204
F204M, camera 2 185
F205W, camera 2 186
F207M, camera 2 187
F212N, camera 2 188
F212N, camera 3 205
F215N, camera 2 189
F215N, camera 3 206
F216N, camera 2 190
F222M, camera 2 191
F222M, camera 3 207
F237M, camera 2 192
F240M, camera 3 208
grisms 83
imaging 28
limits 19
polarizers 76
variation, intra-pixel 110
variation, wavelength 113
servicing mission observatory verification (see "SMOV") 245
shading
dark current removal 130
described 29, 107
shutter
detector reset 121
signal-to-noise
calculating 92
programs 96
signal-to-noise calculations
examples 97
sky brightness
zodiacal background 32
SLOW
overheads 135
readout mode 130
SLTV 245, 246
small angle motion 62, 159
SMOV 246
activities 248
testing 245
software
exposure times 96
grism 87
spectroscopy reduction 81
solar analog
absolute standards 253
spectroscopy 19
central wavelength 79
complex fields 81
data reduction software 87
dispersion 80
G141 85
G206 86
grism, described 78
grism, general 19
grism, multi-object 80, 118
multi-object 80
sensitivity 46, 83
spectral coverage 79
SPIRAL-DITH 150
SQUARE-WAVE-DITH 150
standard stars
calibration 253
G191B2B 253
GD153 253
GD71 253
ground-based calibration 254
H243 253
P041-C 254
P177-D 254
P330-E 254
STIS
compared to NICMOS 26
Stokes parameters
polarimetry 73
STSDAS
calibration 232
system level thermal vacuum test (see "SLTV")

T

target acquisition
ACQ mode, described 30
aperture 62, 63
coronography 68
interactive 30
onboard 30, 130
onboard acquisition 68
overheads 134
re-use target offset 30
telescope
motion 62, 146
motion, overhead 134
small angle motion 62, 159
thermal background 32, 243
thermal vacuum test
(see "SLTV")
time
overheads 133
TWO-CHOP 151

U

units
in Handbook 4
see also "flux" and "wavelength"
unsupported modes
calibration 16
user support
Help Desk 8

V

vignetting
camera 3 59
cameras 1 and 2 53

W

wavelength
sensitivity variation 113
units 4
WFPC2
compared to NICMOS 26
white dwarf
calibration standards 253
World Wide Web
documents 9
exposure time calculations 96
grism exposure times 104
STIS web page 9

X

XSTRIP-DITH 150

Y

YSTRIP-DITH 150


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Copyright © 1997, Association of Universities for Research in Astronomy. All rights reserved. Last updated: 07/14/97 16:55:02