Observing manual for the UVEX survey
The observing manual for the UVEX survey can be downloaded following this link here
When observing, please note the following points:
are made in the RGO U (#204), Sloan g (#220), Sloan r (#214) and HeI
5875 ( #229). Additionally we always have Sloan i (#215) and
H-alpha (#197) in the filter wheel. These are identified in the Mimic
as, resp, U, g,r,i,HeI and Ha. If these filters are not showing up in
the Mimic, please ask your support astronomer to change them to the
correct filters. In particular make sure that RGO U is in the filterwheel and not Stromgren u (identified as 'u').
- Make sure to
interrupt the observing scripts at least every two hours to obtain
observations of photometric standards. Use the standard star scripts
for this, and check if the standards are not saturated. If so, decrease
the integration time, with a minimum of 1 second. Also take standards when weather conditions are not optimal. It
is our prime source of information on the night's quality. Check if the
standard stars are not too close to the Moon (>30 degr.). For the
UVEX fields the observing scripts checks this, but not so for the
- Obtain biases (at least 20) in the afternoon, before sunset, with a fully darkened dome.
flatfields in evening and morning twilight. You can start with HeI
right at sunset. Do not forget to offset the telescope (`offset arc X
X') between flatfields. Not that the offsets are absolute to the
initially requested pointing and not relative to the previous position
of the telescope. Obtain flats in the following order for evening
twilight: HeI, U, g, r. In the morning twilight, reverse the
order. Aim for 20000 cts/pix in all flatfields.
- At the start of the night make sure the autoguider is switched off. Not only by typing 'tv off', but also by clicking in the small GUI window on 'Disable'.
- All data is automatically copied to CASU in Cambridge for processing. It is not necessary to make back-ups of your observations, unless you include observations other than for the UVEX, IPHAS or Kepler-EGAPS programs.
- Do not forget to fill the cryostat in the afternoon and in the morning.
- For IPHAS observations, please find the observing manual here