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Size: 2808
Comment:
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Size: 2793
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 26: | Line 26: |
| * Accessible range : -23000 to +23000 | * Accessible range : -23500 to +23000 |
| Line 29: | Line 29: |
| || FPU Angle || Sky Angle || Chopper pos || Comment || || - 8.5 deg || -6.32 arcmin || -23382 || center CS1 || || -4 deg || -2.97 arcmin || -12101 || || || 0 deg || 0 arcmin || 0 || Mechanical zero || || +4 deg || 2.97 arcmin || 12431 || || || + 8.5 deg || 6.32 arcmin || 22347 || center CS2 || |
|| FPU Angle || Sky Angle || Chopper pos || Comment || || - 8.5 deg || -6.32 arcmin || -23382 || center CS1 (preliminary!) || || -4 deg || -2.97 arcmin || -12101 || || || 0 deg || 0 arcmin || 664 || Optical zero - value from Zeiss measurements || || +4 deg || 2.97 arcmin || 12431 || || || + 8.5 deg || 6.32 arcmin || 22347 || center CS2 (preliminary!) || |
| Line 38: | Line 38: |
| # FPU angle : offset 650 print (664??? +) fpuAngle2ChopPosPol(Double1d([-4, 0, 4])) # Sky angle : scaling factor 80.69 print ((664??? +)fpuAngle2ChopPosPol(Double1d([-4, 0, 4])))/80.69 |
# conversion FPU angles in degrees # to chopper readouts (assuming optical zero of 664 based on Zeiss measurements): print 664 + fpuAngle2ChopPosPol(Double1d([-4, 0, 4])) |
| Line 43: | Line 42: |
664???: optical zero, not known yet, must first be defined and measured! 664 is the best guess for the optical zero using Zeiss measurements. you get angles referred to the mechanical zero by using fpuAngle2ChopPosPol or chopPos2FpuAnglePol |
# conversion chopper readouts to sky angle # in arcmin : scaling factor 80.69 print chopPos2FpuAnglePol(Double1d([-12101, 0, 12431])))*60./80.69 |
FM ILT reference numbers
Ge:Ga detector settings
- Blue
par
value
comment
Bias d
198 mV
From bias / heater loop test
Bias r
10 mV
Component level value - to be verified on CRE checkout test
Heater
1.5 mA
Result from bias / heater loop test (2.68K/1.84mA) exceeds thermal budget
- Red
par
value
comment
Bias d
69 mV
From bias / heater loop test
Bias r
10 mV
Component level value - to be verified on CRE checkout test
Grating
- Configuration table: CONFGrat. Column : FMILTFast / FMILT_R_Fast for redundant
- Allowed working range :
- 45K - 1045K (nominal)
- 65K - 1065K (redundant)
- Conversion wavelength - grating position:
Chopper
- !!! Do NOT use the chopper in redundant mode !!!
- Configuration table CONFChopper / column : CSLopt3-600
- Accessible range : -23500 to +23000
- At +/- 25000 a field plate limit disables the controller
- Conversion chopper position - angle on the sky - FPU angle :
FPU Angle
Sky Angle
Chopper pos
Comment
- 8.5 deg
-6.32 arcmin
-23382
center CS1 (preliminary!)
-4 deg
-2.97 arcmin
-12101
0 deg
0 arcmin
664
Optical zero - value from Zeiss measurements
+4 deg
2.97 arcmin
12431
+ 8.5 deg
6.32 arcmin
22347
center CS2 (preliminary!)
Other angles - in the PCSS (release >20070303A) :
from all import * # conversion FPU angles in degrees # to chopper readouts (assuming optical zero of 664 based on Zeiss measurements): print 664 + fpuAngle2ChopPosPol(Double1d([-4, 0, 4])) # conversion chopper readouts to sky angle # in arcmin : scaling factor 80.69 print chopPos2FpuAnglePol(Double1d([-12101, 0, 12431])))*60./80.69
Filter Wheel PHOT
- POS A = Long wavelength (Green)
- POS B = Short wavelength (Blue)
Filter Wheel SPEC
- POS A = Short wavelength (50-70um)
- POS B = Long wavelength (70-100um)
Calibration sources
- CS1
- 48 Ohm = 55K
- Chopper position center : - TBD
- CS2
- 58 Ohm = 60K
- Chopper position center : + TBD
XY stage
- Scale: 1" on the sky = 0.18mm
- Spectrometer
- Focus : +5mm (from FMILT-1, not incompatible with spectro FMILT-2)
- Center spectro field :
- x = -12.8 mm
- y = +1.2 mm
- Photometer
- Focus : +5mm (from FMILT-1)
- Center field :
- x = 4 mm
- y = 0