Marc Delcroix

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Marc Delcroix last won the day on October 13 2017

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About Marc Delcroix

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    Planétaire, phémus
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    Tournefeuille (31), France

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  1. Message plus détaillé en anglais: Dear all, We are a few weeks before the Europlanet Society Conference (EPSC) which this year is fully online. EPSC has a long tradition to join amateur and professional astronomers with dedicated sessions on amateur astronomy and collaborations of amateur and professional astronomers. This challenging year we miss the oportunity to have both communities together in the same city discussing on exciting observations and sharing personal experiences. However the meeting organizers together with amateur astronomers deeply involved in EPSC past meeting have worked to have the largest amateur astronomy program ever produced in this meeting. Here is a list of events that you may like to consider to join. Splinter meetings do not require registration on the conference and will be mostly organized using Zoom. Keynote lectures will be publicly availalable as video lectures on Vimeo after the conference. Some of these events go outside topics generally discussed in this email list but please send information about them to amateur astronomers that could be interested to join those events on topics such as exoplanets, the Europlanet Telescope Network or the keynote lecture by Marc Delcroix that will cover the broad spectrum of professional and amateur collaborations in solar system astronomy. MESSAGE INDEX: ----------------------------------------------------------------------------------------------------------------------------------------------------------------- 1- Splinter meeting: Juno-Ground Based Support from Amateur Astronomers, Mon 21 September (18:00-20:00 CEST) 2- Session showcase: Professional-Amateur collaborations in small bodies, terrestrial and giant planets, exoplanets, ... Wed 23 September, 11:20-11:40 (CEST) 3- Keynote lecture by Marc Delcroix: The growing extent of professional and amateur collaborations in planetary sciences, Tue 29 September, 17:00-17:20 (CEST) 4- Splinter Meeting: The Europlanet Telescope Network, Wed 30 September, 14:00-16:00 (CEST) 5- Splinter Meeting: The Ariel mission for exoplanets and support from amateurs, Mon, 28 Sep, 18:00–20:00 ----------------------------------------------------------------------------------------------------------------------------------------------------------------- Detailed information on each event below. Links to some of these events are already available in this email and others will appear in the meeting website in the next few days. ----------------------------------------------------------------------------------------------------------------------------------------------------------------- 1. SMW2: Juno Ground-Based Support from Amateur Astronomers 21 sep 2020 18:00-20:00 (CEST, París) | Expected duration: 1hr45 min. ----------------------------------------------------------------------------------------------------------------------------------------------------------------- This event does not require registration on the meeting. The Juno mission orbits Jupiter since 2016. Its JunoCam instrument is providing the highest resolution images of the planet ever obtained. To understand the temporal and spatial context of these images and the details of Jovian meteorology Juno relies on a global ground-support from professional and amateur astronomers. This collaboration has proven essential to the interpretation of this outstanding data. Amateur astronomers provide images that are used to plan the high-resolution observations from JunoCam and citizen scientists process many of the astonishing high-resolution images obtained by JunoCam contributing to the success of the mission. The splinter will contain talks, questions and a short round-table at the end and is open to Juno scientists, amateur astronomers and citizen scientists collaborating with the Juno mission. The splinter will be recorded and available online after the conference. Splinter meeting Program: - Jupiter image processing. Christopher Go - Recent meteorological events on Jupiter. John H. Rogers (BAA) - The Juno mission. Glenn S. Orton (JPL) - JunoCam on Juno. Candice Hansen (PSI) - Junocam image processing. Kevin M. Gill - The value of long-term Jupiter data. Arrate Antunano (Leicester University) Time: 21 sep 2020 18:00 (CEST, París) | Expected duration: 1hr45 min. Join Zoom Meeting: Meeting ID: 849 2433 6526 Access code: 915045 Join by phone: +13126266799,,84924336526#,,,,,,0#,,915045# USA (Chicago) +13462487799,,84924336526#,,,,,,0#,,915045# USA (Houston) Or find your local number Meeting ID: 849 2433 6526 Access code: 915045 Wednesday 23 September, 11:20-11:40 (CEST) ----------------------------------------------------------------------------------------------------------------------------------------------------------------- 2. ODAA3: Professional-Amateur collaborations in small bodies, terrestrial and giant planets, exoplanets, and ground-based support of space missions Tuesday 29 September, 17:00-17:20 (CEST) ----------------------------------------------------------------------------------------------------------------------------------------------------------------- Session showcase: Brief summary of talks and abstracts on amateur astronomy presentations (16) submitted to the conference. This event is part of the meeting and requires being a registered participant in the meeting. Talks and posters belonging to this session will be available to the registered participants in the meeting website. ----------------------------------------------------------------------------------------------------------------------------------------------------------------- 3. Keynote lecture: The growing extent of professional and amateur collaborations in planetary sciences Tue, 29 Sep, 17:00–17:20 Marc Delcroix ----------------------------------------------------------------------------------------------------------------------------------------------------------------- This will be a live presentation as part of the plenary programme for EPSC with Q&As at the end of the talk. This keynote lecture will be recorded and will be publicly available on the EPSC Vimeo channel after the meeting. ----------------------------------------------------------------------------------------------------------------------------------------------------------------- 4. SMW4: The Europlanet Telescope Network Wed 30 September, 14:00-16:00 (CEST) ----------------------------------------------------------------------------------------------------------------------------------------------------------------- This event does not require registration on the meeting. As part of the recently launched Europlanet 2024 Research Infrastructure, a new collaboration between telescopes around the world has been started for providing coordinated observations and rapid responses in support of space missions and in following-up of new events. The so-called Europlanet Telescope Network ( will thereby provide professional scientists and amateur astronomers with access to an initial set of 16 telescope facilities. Scientists and amateurs can now apply to visit those facilities (see website: The Europlanet Telescope Network further plans to support the integration of amateur astronomers into planetary sciences, since their observations can be of crucial importance for several scientific areas. The Splinter Meeting will give an overview on the network, the involved telescope facilities, and will discuss support for amateur astronomers in Europe and beyond. The meeting is open for everyone interested in the Europlanet Telescope Network! ----------------------------------------------------------------------------------------------------------------------------------------------------------------- 5. SMW12: The Ariel mission for exoplanets and support from amateurs Mon, 28 Sep, 18:00–20:00 ----------------------------------------------------------------------------------------------------------------------------------------------------------------- This event does not require registration on the meeting. More than 4000 exoplanets have been discovered so far, and this number is still growing rapidly! However, we know very little about them: What are they made of? What are the conditions there? How did they form and how did they evolve? ESA’s M4 mission, Ariel, will observe spectroscopically around 1000 exoplanets to further characterise their atmospheres and try to answer these questions. Exoplanets is one of the few fields that amateur astronomers and the public can contribute significantly, with observations with small and medium scale telescopes. I the case of Ariel, small and medium size telescope are valuable, in order to plan the observations as efficiently as possible. To achieve this, a good knowledge of the planets’ ephemerides is needed before the launch of Ariel in 2028. While ephemerides for some planets are being refined on a per-case basis, an organised effort to collectively verify or update them when necessary does not exist. In this session, we will present the Ariel mission and will introduce the ExoClock project, an open, integrated and interactive platform with the purpose of producing a confirmed list of ephemerides for the planets that will be observed by Ariel. The project has been developed in a manner to make the best use of all available resources: observations reported in the literature, observations from space instruments and, mainly, observations from ground-based telescopes, including both professional and amateur observatories. To facilitate inexperienced observers and at the same time achieve homogeneity in the results, we created data collection and validation protocols, educational material and easy to use interfaces, open to everyone. ExoClock was launched in September 2019 and now counts over 160 participants, mostly amateur astronomers, who’ve already observed 1200 transits for 170 exoplanets. The session will start with Giovanna Tinetti from UCL, the Principal Investigator of the Ariel Mission, who will present the concept and the goals of the mission and will continue with Athanasia Nikolaou from Sapienza who will present the prospects of Ariel for small planets. Next, Anastasia Kokori from UCL, coordinator of the ExoClock project, will share the scope and the principals of the ExoClock Project, while Martin Crow, an active ExoClock observer form the British Astronomical Association, will share his experience from observing exoplanets and participating to ExoClock. Finally, Angelos Tsiaras from UCL, coordinator of the ExoClock project, will demonstrate how to analyse exoplanet observations with the dedicated, user-friendly tools developed for the project. The ExoClock project website: Educational material can be found at: Splinter meeting agenda: - The Ariel mission. Giovanna Tinetti - Planetary Perspectives of Ariel: Looking at the tree and adding the forest. Athanasia Nikolaou - The ExoClock project: How amateurs can contribute to Ariel. Anastasia Kokori. - Experiencing ExoClock with an active participant. Martin Crow - Analysing exoplanet observations. Angelos Tsiaras ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- Best regards, Ricardo Hueso. -- Ricardo Hueso Alonso Física Aplicada I, Planetary Sciences Group, UPV/EHU Escuela de Ingeniería de Bilbao Plaza Ingeniero Torres Quevedo, 1 48013 Bilbao, Spain Tel: +34 94601 4262 Fax: +34 94601 4178 _._,_._,_
  2. Bonjour à tous, Cette année en raison de la situation sanitaire, l'European Planetary Science Congress a lieu de manière virtuelle du 21 septembre au 2 octobre, avec des présentations et posters consultables quand on veut, et des évènements live. La plupart des présentations et posters sont accessibles sans inscription (les autres considèrent avoir des informations "protégées"). Sinon il faut s'inscrire pour 15€. Les évènements et présentations orientés amateurs: - lundi 21/09 18h-20h : SMW2 - Juno Ground-Based Support from Amateur Astronomers - Professional-Amateur collaborations in small bodies, terrestrial and giant planets, exoplanets, and ground-based support of space missions: aller sur, sélectionner ODAA, ODAA3 (orals ou posters) -ODAA Keynote lecture "The growing extent of professional and amateur astronomy collaborations in planetary sciences" by Marc Delcroix Live plenary lecture Tue, 29 Sep, 17:00–17:20 (CEST) Bien sûr le reste du programme est à conseiller si vous voulez être au coeur de la science planétaire et savoir ce qui se passe, je vous conseille en particulier OPS1, OPS2, OPS6, TP5 pour les planètes. Bon visionnage!
  3. Mars le 13 septembre 2020 (ma meilleure!)

    Merci à tous!
  4. Salut à tous, Par conditions moyennes, et avec un mauvais réglage de FireCapture je suspecte ... Au moins on voit l'ombre de Ganymède se promener, et une des éruptions de la NTB bien visible dans la bande d'absorption du méthane (et sur la 2ème couleur): Couleurs: Bande d'absorption du méthane: Infrarouge: Luminance: Bons ciels,
  5. Neptune et Triton le 12 septembre 2020

    Effectivement sur les planètes j'utilise les ondelettes les plus fines, mais moins sur Neptune et Uranus. Et systématiquement je contraste plus l'image, il faudrait que je vois si le gamma permet de faire mieux.
  6. Salut à tous, Première Neptune de l'année, elle est déjà bien visible en milieu de nuit, accompagné comme d'habitude par Triton (ce qui est bienvenu pour faire de la dérotation). Le centre semble brillant, mais sur 3 images différentes il n'y a pas de preuve de rotation avec la planète, les données sont un peut trop bruitées... Bons ciels,
  7. Mars le 13 septembre 2020 (ma meilleure!)

    @Christophe Pellier, j'ai vu hier le post en question sur la 462MC, effectivement je ne vais pas l'utiliser pour de la couleur ... au moins sur Mars cela clairement noie les nuances bleues et vertes dans le rouge .... J'avais bien vu dans l'infrarouge cette présence du V et du B, par contre cela me paraissait plutôt limité, et évidemment pas génant pour des longueurs d'ondes IR: peu importe par quel pixel couleur de la matrice de Bayer passe la lumière, cela reste du signal infrarouge, donc j'additionnais le tout ... Je pense qu'à l'avenir je cantonnerai la caméra aux longueurs d'ondes hors visible.
  8. Mars le 13 septembre 2020 (ma meilleure!)

    Bonne remarque @Christophe Pellier, je ne me rappelle plus si j'avais bien mis ma luminance sur ma 2nde roue à filtre, et effectivement j'ai été surpris de ne voir aucune trace des nuages visibles sur les bleues. Je l'ai peut-être oublié, je ne suis pas suffisamment habitué aux caméras couleurs, et la fatigue aidant après avoir fait Jupiter et Neptune (pas bonnes d'ailleurs, leseeing a du s'améliorer en fin de nuit) ...
  9. Salut à tous, Très bonnes conditions dimanche matin, ce qui m'a permis de faire sans doute ma Mars la plus détaillée en couleur. On voit Valles Marineris se coucher au limbe, et un magnifique vue du dôme de Tharsis, avec la caldera d'Olympus Mons (peut-être l'ombre du volcan ?), et les autres volcans. Les images bleues révèlent le voile polaire boréal, des nuages orographiques sans doute sur Arsia Mons et Pavonis Mons, ainsi que sur d'autres reliefs, et dans Nectaris Fossea, verticale au sud de Valles Marineris. Cela fait vraiment du bien d'avoir une bonne résolution sur une planète haute dans le ciel ... Les images: Bons ciels,
  10. Pas intégré, mais lancé par AS une fois l'alignement fait (DeTeCt évitera de refaire le calcul si on change les paramètres sous AS).
  11. J'avais déjà évoqué le sujet avec l'auteur de FireCapture, mais notre algorithme n'est pas suffisamment mûr. Par contre, DeTeCt est préparé à être intégré avec autostakkert!, ce sera fait je suppose dans la prochaine version qu'Emil sortira ...
  12. @deep impact, je sais, avant j'avais au moins une version française du tuto. Mais c'est pas mal de travail, il y a du texte un peu pa(rtout. Néanmoins il faudrait que je regarde pour l'interface graphique, il est possible que Visual Studio propose quelque chose de plus simple en lien avec une détection de la langue de Windows. Je mets cela sur la (longue) liste de tâches à faire ...
  13. @PlanetTracker, c'était pas très clair ce que j'ai posté, il y a 2 articles A&A et 1 JSWSC. Les liens sont sur mon site , rubrique collaborations pro-am
  14. @PlanetTracker, Clément, c'est le dernier article sur le sujet des impacts, mais faisant une belle avancée en comparant la courbe de lumière du flash de 2019 découvert grâce à DeTeCt avec des simulations faisant varier différents paramètres comme la densité, la masse, le diamètre, l'incidence et la vitesse de l'impact, pour caractériser le corps impactant. Avant nous avons publié deux articles dans A&A et Journal of Space Weather and Space Climate utilisant notamment les résultats du projet DeTeCt pour aborder l'aspect fréquence des impacts. @exaxe17, Stéphane, l'algo est pas encore suffisament mûr pour, par contre la nouvelle version est "Autostakkert ready", il faut juste qu'Emil publie une nouvelle version
  15. Bonjour, Pour information aux imageurs de Jupiter, et Saturne, je viens de publier une mise à jour importante du logiciel de détection d'impacts sur ces planètes, cf. message (désolé en anglais) ci-dessous. Dans l'attente de vos résultats d'analyses ______________________________________________________________________________________________________________________________________________________________ The DeTeCt impact detection project has up to now collected almost 5 full months of observations through about 140 000 videos analysed! FYI, new DeTeCt version 3.3.0 is out is available here for download, along with a quick user guide and tutorial for analysing detection images. A lot of changes have been done since last released version (v3.2.1), the most visible ones are: - a brand new GUI design, making both the software more comprehensive with more information, and simpler to use (one unique window, select your folder, and all runs). - a new quick user guide - a multi-instances mode to process your files quickier (on my 12 core configuration, I'm almost 6x faster) - clearer detection images with impact probability in filenames, and more visible crosses - 16b files/fits support - options to process, to exit, to shutdown PC automatically For current users, I strongly urge you to update your version. There are many bugfixes, and this will also help me in checking your results. Looking forward your results, Happy impact hunting!