| | 1 | = Reducing CABB Data = |
| | 2 | == An example == |
| | 3 | |
| | 4 | This page will walk through the reduction process for the ToO observation CX167, which was observed on 16 Feb 2009 with the interim CABB system. |
| | 5 | This system had 5 antenna dual pol, 1 IF at 6/3cm, but not all 2048 continuum channels were working. |
| | 6 | |
| | 7 | '''First, make sure you have the CABB version of MIRIAD, otherwise this will not work! ''' |
| | 8 | |
| | 9 | To do this on `kaputar`, make sure that `/nfs/atapplic/miriad-cabb/linux64/bin` is in your path ahead of any other MIRIAD directories. To check that |
| | 10 | this is so, in a terminal, type `which atlod`. It should return `/nfs/atapplic/miriad-cabb/linux64/bin/atlod`. |
| | 11 | |
| | 12 | Then `source /nfs/atapplic/miriad-cabb/MIRRC`. You should now be using the CABB version of MIRIAD. |
| | 13 | |
| | 14 | To begin with, the reduction is the same as any other pre-CABB dataset, and we start by using ATLOD to read in the data. |
| | 15 | We have four files for CX167: `2009-02-16_0658.CX167`, `2009-02-16_0701.CX167`, `2009-02-16_1651.CX167` & `2009-02-16_1824.CX167`. |
| | 16 | |
| | 17 | `atlod in=*.CX167 out=cx167.uv ifsel=2 options=birdie,noauto` |
| | 18 | |
| | 19 | Here, we use `ifsel=2` because only 1 IF was available with the interim CABB system and it was written as IF 2. |
| | 20 | |
| | 21 | At this point, we can see what the CABB spectrum looks like with uvspec: |
| | 22 | |
| | 23 | `uvspec vis=cx167.uv "select=pol(xx,yy)" interval=10 options=nobase,avall axis=chan,amp device=/xs` |
| | 24 | |
| | 25 | |
