Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/~palfa/observing.notes/obslog.20050405.txt Дата изменения: Thu Apr 7 21:07:28 2005 Дата индексирования: Sun Apr 10 23:50:33 2016 Кодировка: Поисковые слова: южная атлантическая аномалия

Dear PALFA consortium members,

Another smooth day of observing, with detections of J1928+1746 (PALFA#1),
a much brighter re-detection of B2020+28, a few single-pulse candidates,
and not much else to report from our quicklook.

Whoever is in charge of the quicklook web page generation scripts - the
pages are amazingly useful! But could you please fix the display bug
identified below? It would save a lot of clicking effort. It may also be
worth it to filter out 60 Hz (16.675 ms) interference, which is detected
as candidate #1 in over half the pointings.

New (re-)detections are posted on
http://www.naic.edu/~palfa/detections2/

Cheers,
Shami

----------- obslog.05apr05.txt ---------
P2030 Observing Notes, 5 Apr 2005, Ramesh Bhat and Shami Chatterjee

Start with timing scan for J1928+1746 (PALFA #1)
- first scan is in incorrect mode, abandoned at ~10 secs.
- observe for 2x134 secs with all 7 beams (100 MHz, ALFA mode)
- detect with S/N of 22.2 (16?) and 28 (17.7?) on scans.

Observe B1933+16 (test) in each beam: okay.
Start catalog observing: 06:00 AST.
Start Quicklook
End observing at 8:30 AST: 53 survey pointings.
Update databsae with fill_observed.py

Quicklook Notes:
* Plot order bug: displays candidate 1, 10, 2, 3, ...
* Plot display bug:
If the last candidate (#9 for now) is filtered out,
then the single pulse plot is also filtered out.
* Quicklook attempts to mkdir already existing directories.
* SNR listed in text is different from the number on the plot.

* 60 Hz signal (16.675 ms) is persistent: should be filtered.

Candidates:
G51.92+03.75.N_53465_0015: potentially interesting single pulse stuff.
G51.92+03.75.N_53465_0017: potentially interesting single pulse stuff (beam 1).

G68.88-04.76.N_53465_0101 Redetection of B2020+28 (4.8 arcmin away)
Seen in many beams, esp Beam 0,5,6.
Detected DM=102, P=343.38 ms, S/N=301 in beam 5.
Beam 7: detect 3rd harmonic with DM=21, P=114.46 ms, S/N=10.

No other obvious quicklook candidates.
(End)