Optical and X-ray Observations of M31N 2007-12b: An Extragalactic Recurrent Nova with a Detected Progenitor?

Optical and X-ray Variability of the Peculiar Cataclysmic Variable FS Aur with a Magnetic and Freely Precessing White Dwarf

Optical identification of the transient supersoft X-ray source RX J0527.8-6954, in the LMC

Optical linear polarization in ultra cool dwarfs: A tool to probe dust in the ultra cool dwarf atmospheres

Optical Multicolor Observations of the SS 433=V 1343 Aql Microquasar

Optical Multicolor WBVR-Observations of the X-Ray Star V1341 Cyg = Cyg X-2 in 1986-1992

Optical Observations of the CBS HZ Her=Her X-1

Optical Observations of the Rapidly Expanding Type Ia Supernova 2007gi

Optical photometry of GM Cep: evidence for UXor type of variability

Optical polarisation of the Crab pulsar: precision measurements and comparison to the radio emission

Optical spectroscopic variability of Herbig Ae/Be stars

Optical spectroscopy of Classical Be stars in open clusters

Optical spectroscopy of MT Dra in 2006 and 2009

Optical spectroscopy of X-Mega targets in the Carina nebula - VII On the multiplicity of Tr 16-112, HD 93343 and HD 93250

Optical studies of SN 2009jf: A type Ib supernova with an extremely slow decline and aspherical signature

Optical Studies of Twenty Longer-Period Cataclysmic Binaries

Optical TiO and VO band emission in two embedded protostars: IRAS 04369+2539 and IRAS 05451+0037

Optical/infrared flares of GRB 080129 from late internal shocks

Optimized gyrosynchrotron algorithms and fast codes

Optimizing Weights for the Detection of Stellar Oscillations: Application to alpha Centauri A and B, and beta Hydri