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#author("2025-07-02T19:22:45+00:00","default:astewww","astewww")
#author("2025-07-02T19:23:49+00:00","default:astewww","astewww")
[[ASTE Wiki]]

* ASTE sensitivity calculator [#e24cf8cb]

:What's this page?|
This page is a manual for the sensitivity calculator used for the ASTE observations.

:Last update|
-- 2025-06-10

:Table of contents|
#contents

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** Step 1: Open the Terminal by clicking the desktop icon in AWS. [#v685b4f1]
CENTER:
&ref(otfaste_1.jpg,,30%);


** Step 2: In the Terminal, start the "otfaste.pl" program, then input the desired parameters.[#l5aeff43]
CENTER:
&ref(otfaste_2.jpg,,30%);
~
~

** Step 3: Check the 'Total time per one map' and 'Optimal OFF-point integration time' [#h40effbb]
CENTER:
&ref(otfaste_3.jpg,,30%);
~
~
LEFT:
You can also download the sensitivity calculator ''&ref(otfaste.pl,,here);''.

** Recommended parameters [#f11de035]

***''For DASH345'' [#ze358e47]
|time for a scan                                 |tscan [s]| 60|
|number of ON-scan per OFF                      |Nscan(SEQ)| 2|
|separation between scans                |(delta)l [arcsec]| 8|
|map grid                                       |d [arcsec]| 8|
|system noise temperature                         |Tsys [K]| 300|
CENTER:
''&color(red){※MAKE SURE that the recommended scan speed is less than 55"/sec. };''~
''For 'resolution bandwidth', 608 kHz ≒ 0.5 km/s ''


***''For CAT8W'' [#g6bc0ac2]
|time for a scan                                 |tscan [s]| 30|
|number of ON-scan per OFF                      |Nscan(SEQ)| 1|
|separation between scans                |(delta)l [arcsec]| 6|
|map grid                                       |d [arcsec]| 6|
|system noise temperature                         |Tsys [K]| 600|
CENTER:
''&color(red){※MAKE SURE that the recommended scan speed is less than 40"/sec. };''~
''For 'resolution bandwidth', 760 kHz ≒ 0.5 km/s ''