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information_for_astronomers:rx:s45mm [2019/10/09 11:19] akraus |
information_for_astronomers:rx:s45mm [2020/09/29 08:16] akraus |
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====== 4.5cm broad band C/X secondary focus receiver (4000-9300 MHz) ====== | ====== 4.5cm broad band C/X secondary focus receiver (4000-9300 MHz) ====== | ||
- | This is a broad-band receiver with two orthogonal linear polarizations (at a 45°-angle with the horizon). The receiver delivers 4 basebands (each with two polarizations): | + | This is a broad-band receiver with two orthogonal linear polarizations (at a 45°-angle with the horizon). The receiver (in most setups simultaneously) delivers 4 basebands (each with two polarizations): |
^Baseband^Center Frequency^Bandwidth^Comment^ | ^Baseband^Center Frequency^Bandwidth^Comment^ | ||
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^ Frequency [GHz] ^ Channel ^ Polarisation ^ Tcal [K] ^ Tsys [K] ^ Sensitivity [K/Jy] ^ SEFD [Jy] ^ Aperture Eff. [%] ^ TMB/S [K/Jy] ^ Main Beam Eff. [%] ^ HPBW [arcsec] ^ Last update ^ | ^ Frequency [GHz] ^ Channel ^ Polarisation ^ Tcal [K] ^ Tsys [K] ^ Sensitivity [K/Jy] ^ SEFD [Jy] ^ Aperture Eff. [%] ^ TMB/S [K/Jy] ^ Main Beam Eff. [%] ^ HPBW [arcsec] ^ Last update ^ | ||
- | |5.250 |1+2 |lin |3.1 |35 |1.60 |22 |56 |2.2 |63 |140 |Oct 2019| | + | |5.250 |1+2 |lin |3.1 |35 |1.60 |22 |56 |2.0 |71 |140 |Oct 2019| |
- | |6.750 |1+2 |lin |4.5 |37 |1.40 |26 |49 |2.2 |63 |105 |Oct 2019| | + | |6.750 |1+2 |lin |4.5 |37 |1.40 |26 |49 |1.6 |58 |105 |Oct 2019| |
- | |6.668 |1+2 |lin |3.6 |34 |1.39 |24 |49 |2.2 |63 |109 |Oct 2019| | + | |6.668 |1+2 |lin |3.6 |34 |1.39 |24 |49 |1.7 |60 |109 |Oct 2019| |
- | |4.829 |1+2 |lin |2.8 |42 |1.59 |26 |56 |2.2 |63 |146 |Oct 2019| | + | |4.829 |1+2 |lin |2.8 |42 |1.59 |26 |56 |1.8 |65 |146 |Oct 2019| |
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==== Channel assignment in the MBFITS data files ==== | ==== Channel assignment in the MBFITS data files ==== | ||
+ | ==== Spectroscopy modes and resolution ==== | ||
+ | |||
+ | ^Baseband^f_center^Bandwidth^N_Chan^Df^Dv^dv^ | ||
+ | ^ ^ GHZ ^MHz ^ ^kHz^km/s^km/s^ | ||
+ | |1|5.25|2500|65536|38.1|2.18|2.53| | ||
+ | |2|6.75|2500|65536|38.1|1.69|1.96| | ||
+ | |3|6.668|200|65536|3.05|0.137|0.159| | ||
+ | |4|4.829|200|65536|3.05|0.189|0.219 | | ||
+ | |||
+ | 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) | ||
==== Tcal and Tsys measurements ==== | ==== Tcal and Tsys measurements ==== | ||
+ | |||
+ |