We have completed a robotic wide‐angle imaging survey of the southern sky (δ=+ 15 to−
90) at 656.3 nm wavelength, the Hα emission line of hydrogen. Each image of the resulting …

We present the initial results of a deep CCD survey for very low mass pre–main-sequence
(PMS) stars in selected fields of the Taurus molecular cloud complex. The results reported …

In this work, we present the analysis of 976 814 FGKM dwarf and subgiant stars in the
Transiting Exoplanet Survey Telescope (TESS) full frame images (FFIs) of the Southern …

We present a multi-wavelength compilation of new and previously published photometry for
55 Galactic field RR Lyrae variables. Individual studies, spanning a time baseline of up to 30 …

Abstract Near‐Earth asteroid (101955) Bennu is an active asteroid experiencing mass loss
in the form of ejection events emitting up to hundreds of millimeter‐to centimeter‐scale …

We report an optical photometric survey of 0.89 deg 2 of the Orion OB1b association
centered on σ Ori. This region includes most of the σ Ori cluster, the highest-density region …

We present results of the second planetary and low-luminosity object transit campaign
conducted by the OGLE-III survey. Three fields (35'x35'each) located in the Carina regions of …

Solar rotational tomography is used to determine the three-dimensional electron density
distribution of the solar corona from 2.4 to 6.0 R☉. The robust, regularized, positive …

We investigate the influence of blending on the Cepheid distance scale. Blending is the
close association of a Cepheid with one or more intrinsically luminous stars. High-resolution …

For five years, WCSTools has provided image astrometry for astronomers who need
accurate positions for objects they wish to observe. Other functions have been added and …