Three new longitudinal magnetic field parameters are extracted from SOHO/MDI magnetograms to characterize properties of the stressed magnetic field in active re
The 110-111 formaldehyde (H2CO) absorption line and H110α radio recombination line (H RRL) are observed towards the giant HII region in cloud complex W43. The
We present measurements of the optical broadband atmospheric extinction coefficients and the night sky brightness at the Xuyi Observation Station of Purple Moun