Atacama Pathfinder EXperiment APEX
Heterodyne Instruments
MPIfR Bonn   ESO   Onsala Space Observatory
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OTF Time Estimator


OTF time estimator V8.0.4
Heterodyne receiver:
Side Band:
Frequency: [GHz]
Line Freq [±2 GHz from tuning]: [GHz]
Resolution Δv: [km/s]
pwv : [mm H2O]
Source elevation: [deg]
Length axis in scanning direction: [arcsec]
Length in the orthogonal axis: [arcsec]
Dumptime (0.1 <= dt <= 4 [s]): [sec]
rms or sigma requested: [K]
Other Tools
OTF SimulatorHelps you to design a map
Atmospheric transmissionCheck your tuning
ON/OFF OTC CalculatorEstimate on/off integration time
Note about OverheadsOverheads Estimatios
Time per sub map [sec]0
Number of calibrations per coverage 0
Total map area covered [arcsec2] 0
Number of submaps 1
Tau (source elev deg) 122232.767
Trec [K] 80.5
Tsys [K] (source elev deg) INF
HPBW () [arcsec] 18.1
Beam solid angle [arcsec2] 411.5
Num of row per Off position (reference pos.) 1
Scanning speed [arsec/ s] 6
Number of coverages 1
sigma reached after 1 coverage [K]0
sigma reached after 1 coverage(s) [K]0
On source time [min,hr] 0 | 0
Off source time [min,hr] 0 | 0
Calibration time [min,hr] 0 | 0
Telescope time [min,hr] 0 | 0


Recent changes:


DateVersionInformation
2018-09-108.0.4No changes in computation. Updated FE names (SEPIA180, SEPIA660. Added table with tuning ranges per FE. Added warning messages when user inputs incorrect setups
2018-08-318.0.3Includes updates for 2SB SEPIA-B9 after installation and commissioning: Trx curves, sideband rejection and extended tuning range [583-724 GHz]
2018-07-028.0.2Included new SEPIA-B9 setup, new tunning range and change from DSB to 2SB
2018-03-218.0.1LASMA receiver added
2017-09-128.0New set of overhead parameters per instrument, measured from data obtained in 2016. SEPIA-B7 added, The specification values for SEPIA-B7 are provisional (based on the specifications) and will need to be updated after successful installation and commissioning









Instrument Frequency Range:


Instrument Frequency Range [GHz]
FLASH345
262.0 - 374.0
FLASH460
374.0 - 516.0
CHAMP690
620.0 - 720.0
CHAMP810
780.0 - 950.0
SEPIA180
159.0 - 211.0
SEPIA660
578.0 - 738.0
PI230
200.0 - 270.0
SEPIA345
272.0 - 376.0
LASMA
262.0 - 374.0