The superdark frame is intended to remove spatial structure present in the dark current. ... The delta-superdark frame is a copy of the superdark frame with hot pixels flagged in the .b3h file and subtracted. ... They were combined with the following algorithm to eliminate cosmic rays: The dark calibration image was initially estimated as the median of the 30 input images at each pixel. ... The few pixels left without data were filled with the median of the 30 input images at those pixels. ...
Электронная библиотека астронома-любителя. ... архив RSN . ... Ru.Space.News: . Февраль 1999 . ... Дата: 24 февраля 1999 (1999-02-24) От: Alexander Bondugin Тема: SpaceViews - 22 February 1999 [1/4] Привет всем! ... S P A C E V I E W S Issue 1999 .02.22 1999 February 22 http://www.spaceviews.com/ 1999 /0222/ *** News *** Soyuz Launches Mir Crew Russian Space Chief Apologizes for Station Delays Britain May Stay Out of ISS Congressman Expresses Concerns about X-33 New Evidence for Mars ...
... As these data span a large range in redshift, they are ideal for testing the validity of Type Ia supernova progenitor models with the distribution of expected \delay times," from progenitor star formation to SN Ia explosion, and the SN rates these models predict. Through a Bayesian maximum likelihood test, we determine which delay- time models best reproduce the redshift distribution of SNe Ia discovered in this survey. ... 1998) SD model. ... We tested two Gaussian delay time distribution models. ...
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