NaCo Photometric Standards

Topics


Broad band filters

Standard star observations with the broad band filters are part of the NaCo calibration plan. If you wish to observe a standard star which is not fromone of the following lists or a specific standard star, then you must submit acalibration OB.

For CONICA 1-2.5 micron imaging, we use different photometric standard star catalogues for different dichroics.

For CONICA 3-5 micron imaging, we use a variety of standard star catalogues.

Narrow band (NB) and intermediate band (IB) filters

Standard star observations with the narrow and intermediate band filters are not part of the NaCo calibration plan. Users will have to submitcalibration OBs if they require standard star observations in these filters.

There are several catalogues that could be used. Users should check thefollowing catalogues.

Atmospheric extinction at Paranal

Filter Average Extinction
J 0.11
H 0.06
Ks 0.07
L' 0.08
M' 0.1-0.2