Calibration of the ART-XC mirror modules at MSFC

MMA Memo: 225: Radiometer Calibration at the Cassegrain Secondary Mirror

The technique presently used at most millimeter telescopes is the "Chopper Wheel Method" introduced by Penzias and Burrus (ARAA, 1973, 11,51), in which the output de ection of an observed source is compared with the di erence between the sky brightness and that of an ambient temperature load. The physical temperature of the absorbing atmosphere is then taken to be the same as the ambient load o...

dedekind modules and dimension of modules

در این پایان نامه، در ابتدا برای مدول ها روی دامنه های پروفر شرایط معادل به دست آورده ایم و خواصی از ددکیند مدول ها روی دامنه های پروفر مشخص کرده ایم. در ادامه برای ددکیند مدول های با تولید متناهی روی حلقه های به طور صحیح بسته شرایط معادل به دست آورده ایم و ددکیند مدول های ضربی را مشخص کرده ایم. گزاره هایی در مورد بعد ددکیند مدول ها بیان کرده ایم. در پایان، قضایای lying over و going down را برا...

3. Calibration of the Inner Pyramidal Mirror

Unlike rigid parts, deformable parts can be deformed by contact forces during assembly. For successful assembly of deformable parts, information about their deformation as well as possible misalignments between the holes and their respective mating parts are essential. However, because of the nonlinear and complex relationship between parts deformation and reaction forces, it is difficult to ac...

Mirror-Based Extrinsic Camera Calibration

This paper presents a method for determining the six degrees-of-freedom transformation between a camera and a base frame of interest. A planar mirror is maneuvered so as to allow the camera to observe the environment from several viewing angles. Points, whose coordinates in the base frame are known, are observed by the camera via their reflections in the mirror. Exploiting these measurements, w...

Critique of Research Books (Art)/ The Art Economics of Art: A Look at Contemporary Art Economics; Markets, Strategies, and the Star-making Systems, Marzieh Eftekhari