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information_for_astronomers:rx:s36mm [2013/03/12 14:08] 127.0.0.1 external edit |
information_for_astronomers:rx:s36mm [2022/09/22 07:30] (current) akraus |
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^ normalized Gain curve (G = A0 + A1·Elv + A2·Elv2)^^^ Observed in ^ confirmed ^ | ^ normalized Gain curve (G = A0 + A1·Elv + A2·Elv2)^^^ Observed in ^ confirmed ^ | ||
- | |A0 = 0.97453|A1 = 1.192E-3|A2 = -1.389E-5|Dec 2001| | | ||
|A0 = 0.99500|A1 = 4.3434e-04|A2 = -1.0562e-05|Feb 2007| | | |A0 = 0.99500|A1 = 4.3434e-04|A2 = -1.0562e-05|Feb 2007| | | ||
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* All values are valid for the new receiver which was installed in September 2001. If you need data for the old one, please contact akraus_at_mpifr-bonn.mpg.de. | * All values are valid for the new receiver which was installed in September 2001. If you need data for the old one, please contact akraus_at_mpifr-bonn.mpg.de. | ||
* Note that (against our usual designation) Channel A is RCP and B LCP! | * Note that (against our usual designation) Channel A is RCP and B LCP! | ||
- | * The new gain curve (Feb 2007) was corrected for opacity. | + | * If no other information about the opacity is available a typical zenith tau value of about 0.015 should do a good job. |
- | * If no other information about the opacity is available a typical zenith tau value of about 0.018 should do a good job. | + | |
==== Version description for OBSINP ==== | ==== Version description for OBSINP ==== | ||
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| 13 | VLBA | cross | sin AB | | | 13 | VLBA | cross | sin AB | | ||
- | ==== Tcal and Tsys measurements ==== | + | ==== Spectroscopy modes and resolution ==== |
- | {{:information_for_astronomers:rx:s36mm-xffts-tcal.png?900|Tcal}} | + | ^ BW ^ nchan ^ nu ^ Df ^ Dv ^ dv ^ |
+ | ^ MHz ^ ^ MHz ^ kHz ^ km/s ^ km/s ^ | ||
+ | | 100 | 32768 | 7800 | 3.1 | 0.117 | 0.136 | | ||
+ | | 100 | 32768 | 8000 | 3.1 | 0.114 | 0.133 | | ||
+ | | 100 | 32768 | 8200 | 3.1 | 0.112 | 0.129 | | ||
+ | | 100 | 32768 | 8400 | 3.1 | 0.109 | 0.126 | | ||
+ | | 100 | 32768 | 8600 | 3.1 | 0.106 | 0.123 | | ||
+ | | 100 | 32768 | 8800 | 3.1 | 0.104 | 0.121 | | ||
+ | | 500 | 32768 | 7800 | 15.3 | 0.586 | 0.680 | | ||
+ | | 500 | 32768 | 8000 | 15.3 | 0.572 | 0.663 | | ||
+ | | 500 | 32768 | 8200 | 15.3 | 0.558 | 0.647 | | ||
+ | | 500 | 32768 | 8400 | 15.3 | 0.545 | 0.632 | | ||
+ | | 500 | 32768 | 8600 | 15.3 | 0.532 | 0.617 | | ||
+ | | 500 | 32768 | 8800 | 15.3 | 0.520 | 0.603 | | ||
- | {{:information_for_astronomers:rx:s36mm-xffts-tsys.png?900|Tsys}} | + | BW ... band width\\ |
+ | nchan ... number of spectral channels\\ | ||
+ | nu ... center frequency\\ | ||
+ | Df ... Channel separation (in frequency)\\ | ||
+ | Dv ... Channel separation (in velocity)\\ | ||
+ | dv ... Velocity resolution (dv=1.16*Dv) | ||
- | {{:information_for_astronomers:rx:s36mm-xffts-trms.png?900|Trms}} | ||
+ | ==== Tcal and Tsys measurements ==== | ||
+ | {{:information_for_astronomers:rx:s36mm_tcal_from_specpointing_using_tau_spec.png?675 |}} | ||
+ | {{:information_for_astronomers:rx:s36mm_tsys0_from_specpointing_using_tau_spec.png?675 |}} | ||
+ | {{:information_for_astronomers:rx:s36mm_tau_from_specpointing_using_tau_spec.png?675 |}} | ||
+ | {{:information_for_astronomers:rx:s36mm_hpbw_from_specpointing.png?675 |}} | ||