Plenoptic wavefront sensor for free-space optical communications
A plenoptic wavefront sensor is proposed for the measurement of the atmospheric turbulence on satellite-toground optical communications. The design will be...
PN G135.9+55.9: a New, Extremely Oxygen-Poor Planetary Nebula in the Galactic Halo
We show that SBS1150+599A is most probably a planetary nebula located in the Galactic halo (becoming PN G135.9+55.9). Our photoionization models indicate that...
Point Spread Function Analysis of the NACO Instrument at the VLT
In this work an analytical description of the NACO PSF with a minimum number of parameters is sought. These parameters are governed by the observational...
Follow-up RXTE PCA observations of the transient source consistent with the position of SAX J1808.4-3658 (ATEL#505) showed clear coherent pulsations at...
One of the calibration problems posed by the new generation of mid-infrared instrumentation on 8--10~m class telescopes is that of polarimetric calibration. To...
Polarimetric capabilities with the Canarias InfraRed Camera Experiment (CIRCE)
The Canarias InfraRed Camera Experiment (CIRCE) for the Gran Telescopio Canarias (GTC) is one of the few infrared instruments in the world using a four-beam...
Making emphasis on observations that have included some type of polarization analysis, I concentrate on two subjects. First, the vector magnetic field...