An On-Orbit Determination of the On-Axis Point Spread Function of the Hinode X-Ray Telescope

[摘要] TheHinodeX-rayTelescopeprovidesunprecedentedobservationsofthesolarcoronainX-rays,dueinparttoitsfineresolution.TheX-raypointspreadfunction(PSF)wasmeasuredbeforelaunchattheNASAX-rayCalibrationFacilitytohaveaFWHMof$$0lap{.}^{primeprime}8$$.ThispaperdescribestheworktoverifythePSFmeasurementsusingon-orbitobservationsofplanetarytransitsandsolareclipses.AnalysisofaMercurytransitgivesaPSFFWHM$$=1lap{.}^{primeprime}0pm0lap{.}^{primeprime}12$$.

[学科分类] 天文学(综合)

[关键词] "instrumentation: high angular resolution";"Sun: X-rays;gamma rays";"techniques: high angular resolution"