NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Presentations . ... Arecibo Alfa Survey of Radio Recombination Lines . Yervant Terzian, Cornell University . The Arecibo Observatory: Past, Present, and Future . Robert B. Kerr, Arecibo Observatory . ... тАЬRe-Inventing Arecibo ObservatoryтАЭ Workshop . ... Re-Invigorating: Astronomy & Planetary Science at Arecibo Observatory . ... The University of Puerto Rico and the Arecibo Observatory: 30 Years of Collaboration and Counting . ...
... 2.3 Data acquisition Spectra generated by the Multibeam correlator contain the usual structure seen in spectra from other H i instruments: a bandpass spectrum which is the sum of the sky , ground and receiver temperatures multiplied by the product of the filters in the receiver chain; superimposed on this is a noise ... Note also that sources extended much beyond ,40 arcmin can be imaged poorly in HIPASS images because of the bandpass sidelobe effect described in Section 3.3. ...