Reference : Straylight-Rejection Performance of the STEREO HI Instruments
Scientific journals : Article
Engineering, computing & technology : Aerospace & aeronautics engineering
http://hdl.handle.net/2268/95458
Straylight-Rejection Performance of the STEREO HI Instruments
English
Halain, Jean-Philippe mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Rochus, Pierre mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Defise, Jean-Marc mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Satellites, missions et instruments spatiaux >]
Mazy, Emmanuel mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Mazzoli, Alexandra mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Jul-2011
Solar Physics
Springer Science & Business Media B.V.
Yes (verified by ORBi)
International
0038-0938
[en] Straylight ; Lens barrel rejection ; Mean solar brightness ; Off-pointing
[en] The SECCHI Heliospheric Imager (HI) instruments on-board the STEREO
spacecraft have been collecting images of solar wind transients, including coronal mass
ejections, as they propagate through the inner heliosphere since the beginning of 2007.
The scientific use of the images depends critically on the performance of the instruments
and its evolution over time. One of the most important factors affecting the performance
of the instrument is the rejection of straylight from the Sun and from other bright objects
located both within and outside the HI fields of view.
This paper presents an analysis of the evolution of the straylight-rejection performance
of the HI instrument on each of the two STEREO spacecraft over the three first years of
the mission. The straylight level has been evaluated and expressed in mean solar brightness
units, in which such scientific observations are usually quoted, using photometric conversion
factors.
Researchers ; Professionals
http://hdl.handle.net/2268/95458
10.1007/s11207-011-9800-z

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