Posts

Shooting stars XXL

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 tldr; - For almost a year now, an all-sky camera has been on duty on the roof of our school. It quite reliably captures approximately 5000 black-and-white frames per 24 hours of the sky above Bruneck, South Tyrol. Recently, we started checking the huge dataset for bright meteors, also called bolides. During our first two-hour search run, we found four; two more followed. (Yes, astrocusanus does homework assignments, too 😉.) In 2019 we won the 'Reiff-Preis', a recognition for our year-long efforts in the field of astronomy at school. With the money awarded to us we were able to fulfill a long held dream of an automated all-sky camera (see "Can't take my eyes off you" ). With this new 'toy' we not only hoped to be able to check on the weather without the bother of looking out of the window. We also were eager to begin a hunt for bright meteors, aka bolides. The bolides search team rocks the (overcast 🥺) sky! Alex, Amy, Letizia, Mara & Christof Wiedema

TWAN / The world at night - First part

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 tl;dr - Recently, I decided to share my experience in the field of night photography with my students. Here I present the results of our first excursion, where we targeted Orion, the hunter. In 2018, I decided to give a new hobby a try. Inspired by the work of other TWAN photographers, I started venturing out into the night and taking my first snapshots of the night sky, always along with a nice foreground. Now, in 2023, I deemed the time to be ripe to share my experience with others. Six students of the Cusanusgymnasium Bruneck embraced the opportunity. In the afternoon of 7 December 2022 we had our first meeting, a workshop about the basics of night photography. For over two hours I filled the capacious brains of these youngsters with relevant concepts like polar alignment, guiding, stacking, noise, colour temperature, saturation level, etc. and introduced them to useful apps like Peakfinder or Stellarium .  Painfully aware of this abstract and quite demanding immersion into the to

A comet named ... C/2022 E3 (ZTF)! 💩

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 tl;dr - On 2 March 2022 the observatory "Zwicky Transient Facility" discovered a new comet. The icy wanderer reached its closest approach to earth on 1 February 2023. It did not quite put on a show as comet Neowise in 2020, nevertheless we didn't leave the visitor unattended. Besides taking pictures, we also decided to acquire a spectrum. It is difficult to tell when the best time for amateur astronomy was. I might have been the early 90s, when digital cameras (CCDs) became affordable. It was the time when one could simply walk out into the backyard, take some images through a medium size telescope and discover a previously unknown asteroid or comet. A comet would inherit the name of its discoverer - that's the rule that still applies today! Unfortunately, human discoverers of comets belong to a species in the way of extinction. Automated search programs are the state of the art now and they are shockingly effective. The Zwicky Transient Facility (ZTF) has a telesco

Sonnenfinstenis - Lobpreisung und Aufruf

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The following lines were written by Christof Wiedemair some time after witnessing the "Great American Eclipse" - dubbed so by the media - in 2017. It is not only a praise to this terrific natural  phenomenon  but also a passionate "kick up the arse" for anyone who has not yet had the opportunity to experience one.  German only, friends. Sorry for that. Our Italian readers can find a detailed description of the events here: blogparsec.it ******** Nach fünf erlebten Sonnenfinsternissen und summierten fünfzehneinhalb Minuten im Kernschatten des Erdmondes, mute ich dem geneigten Leser meine Rekapitulation des Gesehenen zu: Vorweg, die Aussage, dass man eine Sonnenfinsternis nicht standesgemäß beschreiben kann, sondern erleben muss, trifft völlig zu. Es ist wohl das beeindruckendste Spektakel, das die Natur aufzubieten hat. Zu Beginn ist alles noch entspanntes Warten. Man unterhält sich, behält die Wolken am Himmel argwöhnisch im Auge, blickt dann und wann prüfend auf

Shadow plays

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 tl;dr - Between the 25th October 2022 and the 7th November 2022, i.e. in a timespan of only two weeks, our astronomy group witnessed four eclipses.  Four? Ok, I can imagine your incredulous look, so let's be more specific: It weren't all solar eclipses, just three of them. Even more incredulous now? Stop furrowing your eyebrow and let me walk you through every single event. 25th October 2022: Partial solar eclipse over Bruneck The weather forecast for the day was good and so we had taken our preparations seriously. We were equipped with several solar eclipse goggles, a solar projector and a binocular with safety filters. By 11 a.m. we had set up a small stand outside the school building, ready to let as many of our fellow students as possible enjoy the show. However, a thick and grey layer of fog stubbornly claimed the lead role for itself. We had to play the waiting game for almost 1.5 hours ere we could eventually start with our observations. Nonetheless for the remaining 30

A lucky fella

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 tl;dr - David Cont, who could very well be called a founding member of our astronomy group, is a lucky fellow. Last August he enjoyed a two-week observational stay at the monumental VLT observatory in Chile.  In 2008 the astronomy group of our school saw the light of the day. Actually it wasn't the light of the day, it was star light. And it wasn't any star, it was CY Aquarii, our up to the present favourite star in the entire universe (though there's a tight race between him and the sun going on). In a painstakingly laborious project we used the constant and remarkably short period of its brightness changes to derive the speed of light in vacuum, something Ole Römer had done about 300 years earlier. Back then (in 2008, not 300 years ago) David was one of the most dedicated team members and would stay one of the pillars of our group for the years to come. However, all good things come to an end and when David passed his final exam in 2010 the time to say farewell had come.

Can't take my eyes off you

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 tl;dr - At the end of the school year 2021/22 we installed an all-sky camera on the roof of our school building. For over three weeks now the gadget has reliably delivered live images of the day and night sky. Our main goal is to catch some impressive meteors and bolides. A few weeks ago we were finally able to set an end to a year-long struggle and installed our DIY all-sky camera on the roof of our school building. The first steps of this project were already made back in December 2019, but soon after, the Corona virus made its dreadful appearance on the global stage and the pandemic showed to be a hard-to-shake-off millstone around the neck of the endeavor.  Now, however, we are past the first test phase of the cam and everything seems to run smoothly. Let us get you acquainted with what we have.  We proudly present our all-sky camera!  In the image you see the fisheye lens (Fujinon 2.7mm), the video camera (ASI 174MM) and the Raspberry Pi 4B along with the waterproof housing. The