Assigned Member (担当者)2012-11-15 M.NakajimaName and Institute (質問者/機関)Ms. Chia-Ying ChiangQuestion (質問)When this observation was scheduled, in order to avoid possiblecontamination from nearby sources, we shifted the pointing by 6'west. Therefore the source is off-axis and possibly affected by vignetting effects. As for the XIS detector, it is ok because corrections have been included in calibration files. However, for the PIN, corrections are not included. The HXD nomination and XIS nomination (differ by ~3.7') can cause a ~10% flux differences in PIN. How can I estimate the flux difference caused by a 6' shift? Answer from(回答の文責)SuzakuHelp (nakajima)Answer (答え)The flux difference caused by off-axis observation can be estimatedwith "hxdarfgen". Please check the usage of this task by fhelp command. Status (詳細なステータス)2012-11-15 Accept2012-11-19 Answer 2012-11-19 Closed ![]() ![]() ![]() ![]() ![]() |