The 64 Mpixel wide field imager for the Wendelstein 2m Telescope: Design and Calibration

The Wendelstein Observatory of Ludwig Maximilians University of Munich has recently been upgraded with a modern 2m robotic telescope. One Nasmyth port of the telescope has been equipped with a wide-field corrector which preserves the excellent image quality (< 0.8" median seeing) of the site (Hopp et al. 2008) over a field of view of 0.7 degrees diameter. The available field is imaged by an optical imager (WWFI, the Wendelstein Wide Field Imager) built around a customized 2 $\times$ 2 mosaic of 4k $\times$ 4k 15 \mu m e2v CCDs from Spectral Instruments. This paper provides an overview of the design and the WWFI's performance. We summarize the system mechanics (including a structural analysis), the electronics (and its electromagnetic interference (EMI) protection) and the control software. We discuss in detail detector system parameters, i.e. gain and readout noise, quantum efficiency as well as charge transfer efficiency (CTE) and persistent charges. First on sky tests yield overall good predictability of system throughput based on lab measurements.Comment: 38 pages 19 Figures To be published in Springer Experimental Astronom

A Glance into the Tunnel: Experimental Evidence of Expectations Versus Comparison Considerations

Learning that others earn more may reduce individual well-being but can also be informative about the own income prospects. This paper provides experimental evidence that separates direct effects of income comparisons on well-being and informational effects from observing changes in the income of others. In an environment of uncertainty about the own income we find that both the direct comparison effects and the informational effects are asymmetric. Individual beliefs about the own income are adjusted downwards when observing that others are likely to earn less but do not change significantly when observing that others are likely to earn more. Individual satisfaction decreases when observing that others are likely to earn more but does not change significantly when observing that others are likely to earn less. Overall, individuals are more reactive to bad news than to good news

Europe and the Petersberg Tasks - Nation-State behavior through the prism of Strategic Culture

Les missions Petersberg són l'operatiu militar més ambiciós organitzat per la Unió Europea en el desenvolupament de la CSDP, Política Europea de Seguretat i Defensa. Amb l'objectiu d'aconseguir una organització efectiva y funcional d'aquestes missions, és desitjable que les cultures estratègiques dels diferents Estats membres siguin, en gran mesura, compatibles en benefici d'una cultura estratègica europea amb directrius clares. Aquest estudi compara les cultures estratègiques d'Alemanya, el Regne Unit i França en referència al seu nivell de compatibilitat contrastant-les amb dos casos recents, exemples paradigmàtics de cultures estratègiques integrals. D'aquesta manera, pretenem descriure les circumstàncies en què es desenvolupen les missions Petersberg.The Petersberg Tasks is the most ambitious set of operational tasks the EU has set itself in the development of the CSDP. For the practical utility of this set of tasks, it can be expected that the strategic cultures of the member states have to be compatible to a large extent in order to create a European strategic culture with a clear conception. This study compares the strategic cultures of Germany, the United Kingdom and France in respect of their compatibility by testing a comprehensive paradigm of strategic culture in two recent cases, offering the circumstances of conducting the Petersberg Tasks

Surgical management of laryngotracheal stenosis in adults

The purpose was to evaluate the outcome following the surgical management of a consecutive series of 26 adult patients with laryngotracheal stenosis of varied etiologies in a tertiary care center. Of the 83 patients who underwent surgery for laryngotracheal stenosis in the Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital of Lausanne, Switzerland, between 1995 and 2003, 26 patients were adults (≥16years) and formed the group that was the focus of this study. The stenosis involved the trachea (20), subglottis (1), subglottis and trachea (2), glottis and subglottis (1) and glottis, subglottis and trachea (2). The etiology of the stenosis was post-intubation injury ( n =20), infiltration of the trachea by thyroid tumor ( n =3), seeding from a laryngeal tumor at the site of the tracheostoma ( n =1), idiopathic progressive subglottic stenosis ( n =1) and external laryngeal trauma ( n =1). Of the patients, 20 underwent tracheal resection and end-to-end anastomosis, and 5 patients had partial cricotracheal resection and thyrotracheal anastomosis. The length of resection varied from 1.5 to 6cm, with a median length of 3.4cm. Eighteen patients were extubated in the operating room, and six patients were extubated during a period of 12 to 72h after surgery. Two patients were decannulated at 12 and 18months, respectively. One patient, who developed anastomotic dehiscence 10days after surgery, underwent revision surgery with a good outcome. On long-term outcome assessment, 15 patients achieved excellent results, 7 patients had a good result and 4 patients died of causes unrelated to surgery (mean follow-up period of 3.6years). No patient showed evidence of restenosis. The excellent functional results of cricotracheal/tracheal resection and primary anastomosis in this series confirm the efficacy and reliability of this approach towards the management of laryngotracheal stenosis of varied etiologies. Similar to data in the literature, post-intubation injury was the leading cause of stenosis in our series. A resection length of up to 6cm with laryngeal release procedures (when necessary) was found to be technically feasibl