... Cheng-Jiun investigated anomalous refraction effects at 3 mm, evaluated the antenna tracking stability using an opticaltelescope mounted on an ATCA antenna, and worked on data acquired in a short baseline interferometer with the aim of evaluating methods ...
... Only radio telescopes can observe the region very close to the Galactic Equator since obscuration from dust and high stellar density effectively make the area opaque or heavily confused to optical and infrared telescopes. ...
... A transit of Mercury across the Sun's disk occurred last November and, as part of our outreach program, John Smith (visiting from Parkes) and Jo Houldsworth set up an opticaltelescope in town for viewing. ...
... 2000 March 3 Abstract: Practical astronomy is usually taught using opticaltelescopes or, more rarely, radio telescopes ... relations 1 Introduction Practical teaching in astronomy usually concentrates on the use of opticaltelescopes ...
... These galaxies were . hidden from optical (light) telescopes by the gas and dust of the Milky . Way, but radio waves can travel through the dust; . ...
... E. Cram et al. responses of optical and radio telescopes to extended sources, most ... optical observations made with an H filter (either digitally or photographically ...
... Opticaltelescopes cannot directly observe the universe at times earlier than the ... few galaxies had been observed with opticaltelescopes at distances beyond what we ...
... From GalileoБЂ™s use of the telescope in 1609 to the Second World War, such telescopes were optical, that is they gathered photons of light in the visible part of the electromagnetic spectrum. ...