User Tools
information_for_astronomers:rx:s7mm_db
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
|
information_for_astronomers:rx:s7mm_db [2019/12/06 10:28] akraus |
information_for_astronomers:rx:s7mm_db [2020/11/02 09:08] akraus |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| ====== 7mm secondary focus receiver (33500-50000 MHz) ====== | ====== 7mm secondary focus receiver (33500-50000 MHz) ====== | ||
| - | This is a 4-channel two horn system for continuum, spectroscopy and VLBI observations. This is a new receiver currently in commissioning and was installed in March 2018. More details will follow.\\ | + | This is a 4-channel two horn system for continuum, spectroscopy and VLBI observations.\\ |
| + | Attention: When frequencies lower than 35 GHz are selected, the receiver operates in | ||
| + | double sideband mode for some parts of the observed bandpass. Please contact staff for | ||
| + | advice. | ||
| ==== Calibration Information ==== | ==== Calibration Information ==== | ||
| Line 23: | Line 26: | ||
| **Comments:** | **Comments:** | ||
| + | * **Please note, that Tsys and SEFD are given for zenith. For sensitivity calculations, please take the atmosphere's opacity into account!** | ||
| * The new gain curves were corrected for opacity. | * The new gain curves were corrected for opacity. | ||
| * Opacity correction was done with a zenith opacity of 0.06-0.08. Typical zenith opacities under good weather conditions are around 0.07 to 0.1 at 42 GHz. | * Opacity correction was done with a zenith opacity of 0.06-0.08. Typical zenith opacities under good weather conditions are around 0.07 to 0.1 at 42 GHz. | ||
information_for_astronomers/rx/s7mm_db.txt · Last modified: 2023/03/21 14:24 by akraus
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 4.0 International
