<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi All,<div><br></div><div>On the night of 10/11 Sept, the quick check shows that ESO_CCD_#93 (ninety-three) shows anomalous behavior. The light sensitive region is significantly below the overscan regions (60-130 ADU versus ~185) and shows a gradient in the Y-direction (see attachment, overscan pixels are white here). I do note what at first appears to be bright cosmic ray events, but upon closer inspection look more like chip anomalies (e.g., hot pixels, traps).<br><div apple-content-edited="true"><br>Cheers,<br><br><br>-=John<br><br><img height="582" width="289" apple-width="yes" apple-height="yes" id="82f1c396-4c8a-4a29-85fb-2d2eef218a7a" src="cid:354DD164-CB75-492E-835E-545DB2B74BBE"></div><br><div><div>On 12 Sep, 2011, at 11:27 , K Kuijken wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Dear all:<br><br>worrying news from eso: one of the ccd's is not working properly.<br>I will keep you posted.<br>Koen<br><br>-------- Original Message --------<br>Subject: AW: AW: CCD # 92 / Going home<br>Date: Mon, 12 Sep 2011 09:04:47 +0000<br>From: Dietrich Baade <<a href="mailto:dbaade@eso.org">dbaade@eso.org</a>><br>To: K Kuijken <<a href="mailto:kuijken@strw.leidenuniv.nl">kuijken@strw.leidenuniv.nl</a>><br>CC: <a href="mailto:mbernard@usm.lmu.de">mbernard@usm.lmu.de</a> <<a href="mailto:mbernard@usm.lmu.de">mbernard@usm.lmu.de</a>><br><br>Hi Konrad,<br><br>Sorry for the oversight. I'm still on leave.<br><br>As far as I understood, CCD #92 has lost its light sensitivity and only <br>produces bias images.<br><br>Best regards,<br><br>Dietrich.<br>________________________________________<br>Von: K Kuijken [<a href="mailto:kuijken@strw.leidenuniv.nl">kuijken@strw.leidenuniv.nl</a>]<br>Gesendet: Montag, 12. September 2011 10:59<br>Bis: Dietrich Baade<br>Betreff: Re: AW: CCD # 92 / Going home<br><br>Hi Dietrich,<br>I seem to have missed the first emails in this series.<br>What is the problem?<br>Konrad<br><br><br>Dietrich Baade wrote:<br><blockquote type="cite">Hi Olaf,<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">This does sound bad. Especially since, as far as I remember, #92 has not previously shown any anomalies (or should the number be 82??).<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">While I still sincerely hope that we haven't exhausted the possibilities of remote diagnostics (and even remote corrective action) - in the case of such severe symptoms I would expect much more detailed information from Paranal - please prepare for the worst:<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Identify a replacement device and put it on the test bench.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Thank you and best regards,<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Dietrich.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">________________________________________<br></blockquote><blockquote type="cite">Von: Olaf Iwert [<a href="mailto:oiwert@eso.org">oiwert@eso.org</a>]<br></blockquote><blockquote type="cite">Gesendet: Sonntag, 11. September 2011 20:17<br></blockquote><blockquote type="cite">Bis: Javier Valenzuela<br></blockquote><blockquote type="cite">Cc: Nicolas Haddad; Miguel Riquelme; Frederic Yves Joseph Gonte; Dietrich Baade; Olaf Iwert; Dietrich Baade; Christoph Geimer<br></blockquote><blockquote type="cite">Betreff: CCD # 92 / Going home<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Dear Javier& Frederic,<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Being tired and hungry, I will go home now.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">If you still want to talk today, please give me a call at home +49 / 89<br></blockquote><blockquote type="cite">/ 120 11 474<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Good luck with all tests to find the cause, as discussed via phone.<br></blockquote><blockquote type="cite">Olaf<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">--<br></blockquote><blockquote type="cite">Olaf Iwert<br></blockquote><blockquote type="cite">ESO - European Organisation for Astronomical Research in the Southern Hemisphere<br></blockquote><blockquote type="cite">Karl-Schwarzschild-Strasse 2, D-85748 Garching bei Muenchen, Germany<br></blockquote><blockquote type="cite">Email: <a href="mailto:oiwert@eso.org">oiwert@eso.org</a> Tel: +49 89 32006353 Fax: +49 89 32006489<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><br><br>_______________________________________________<br>Comm2011 mailing list<br><a href="mailto:Comm2011@astro-wise.org">Comm2011@astro-wise.org</a><br>http://listman.astro-wise.org/mailman/listinfo/comm2011<br><br><br></div></blockquote></div><br></div></body></html>