Alma sem Corpo

Memórias da alma e do corpo. A Misericórdia de Setúbal na modernidade

industry. William had always shown the greatest interest in the technical side of the business and was the originator of the first fire-proof construction in England. He now had the opportunity of planning hospital accommodation for eighty patients besides those with infectious diseases. In the Infirmary he introduced day-rooms for convalescents, a number of wards with only two or three beds, a...

ALMA Chapter 3.1: Calibration issues for ALMA

The precision imaging to be attained by the ALMA will be achieved through accurate calibration. The types of calibration are summarized in Table 3.1. Table 3.1 ALMA Calibration Requirements. Pointing 0.6" absolute Primary Beam 2-3% Baseline Determination 0.1 mm Flux Calibration 1% absolute flux accuracy goal Phase Calibration 0.15 radian at 230 GHz Bandpass Calibration 10000:1 to 100000:1 Polar...

ALMA Memo XXX Bandpass Calibration for ALMA

This memo contains a detailed evaluation of the expected performance of the bandpass calibration for ALMA. We evaluate the limitations on the bandpass accuracy due to the imperfect knowledge of the atmospheric transmission. We show that the best bandpass accuracy is obtained when the amplitude calibration is applied in a single-load scheme. The proposed scheme is a variant of the so-called band...

ALMA Memo 493 Finding Fast Switching Calibrators for ALMA

In order to perform fast switching phase calibration effectively, we need to have a database of bright point-like sources at millimeter wavelengths. Optimally, this would include flux measurements at 86 GHz and spectral information at higher frequencies. We present a sample of 31145 compact flat spectrum radio sources with −40 < δ < +60, presumed extragalactic, which will be likely candidates f...

ALMA Memo No. 324 Proposal for ALMA Front End Optics