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. ...
... Nel riflesso sul casco si puo' vedere il fotografo: il comandante Charles Conrad. ... LocalitЮ raffigurata : - Data dello scatto :4 Gennaio 1998 - Fotografo :Telescopio spaziale Hubble - Personaggio : -Tipo oggetto : -Tecnica fotografica :immagine digitale -Thesaurus :Saturno, Pianeti Satelliti, Sistema solare -------------------------------------------------------- Figura : Ref : -Titolo/soggetto : - LocalitЮ raffigurata : - Data dello scatto : - Fotografo : - ...
... 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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