000005863 001__ 5863
000005863 005__ 20221021151123.0
000005863 037__ $$aCTALK-2022-0082
000005863 100__ $$aBerghmans, David
000005863 245__ $$aFirst Perihelion of EUI
000005863 260__ $$c2022
000005863 269__ $$c2022-09-12
000005863 500__ $$aOral contribution O23 of the conference abstract book
000005863 520__ $$aOn March 7 2022 with Solar Orbiter at a distance of 0.50 AU to the Sun and crossing between the Sun and Earth line, the Extreme Ultraviolet Imager (EUI) with its High Resolution Imager in EUV (HRI-EUV, 17.4 nm) created a 25-panel mosaic of raw exposures covering the entire disc of the Sun. Using this dataset we discuss the biggest challenges of calibrating EUI data in general and HRI-EUV data in specific: from dark and flat calibration, artefacts on the detector in the shape of gummy bears, to the difficulties in combining low and high-gain images into high dynamic range combined gain exposures. Finally, we show how the calibrated images were combined into the highest resolution full-disc solar corona image in Extreme ultraviolet light ever. This combined mosaic image was produced in first instance for outreach purposes. However, some science use and multi-instrument cross-calibration can also be anticipated and we will discuss the limitations and opportunities for this.
000005863 594__ $$aSTCE
000005863 6531_ $$aSun
000005863 6531_ $$acorona
000005863 6531_ $$aEUI
000005863 700__ $$aAntolin, Patrick
000005863 700__ $$aAuchère, Frederic 
000005863 700__ $$aBarczynski, Krzysztof 
000005863 700__ $$aAznar Cuadrado, Regina 
000005863 700__ $$aChitta, Lakshmi Pradeep 
000005863 700__ $$aGissot, Samuel 
000005863 700__ $$aHarra, Louise 
000005863 700__ $$aJanvier, Miho 
000005863 700__ $$aKraaikamp, Emil 
000005863 700__ $$aLong, David 
000005863 700__ $$aMierla, Marilena 
000005863 700__ $$aParenti, Susanna 
000005863 700__ $$aRodriguez, Luciano 
000005863 700__ $$aSchühle, Udo 
000005863 700__ $$aStegen, Koen 
000005863 700__ $$aVerbeeck, Francis 
000005863 700__ $$aZhukov, Andrei 
000005863 700__ $$aEUI team, X
000005863 773__ $$t8th Solar Orbiter Workhop
000005863 8560_ $$fdavid.berghmans@observatoire.be
000005863 906__ $$aContributed
000005863 980__ $$aCTALKCONT