Mastodon est magique, j'en suis sûr.
Mon fils de 8 ans est passionné d'astronomie.
Nous lui avons promis un super livre sur ce sujet.
Nous sommes donc à la recherche du meilleur livre possible.
Parmi les astronomes amateurs et professionnel de mastodon, quel livre conseillez vous ?
Le retoot vous décroche la lune. #astronomy#astronomie#astrophotography#astrophysique
1/ This is the longest exposure I've ever taken: 8 months long! It shows the Sun's path on the sky between Apr 17 - Dec 11 2018, as seen from ESO's Paranal Observatory in #Chile.
This is part of a collaboration with Diego López Calvín, an expert in solarigraphy: https://solarigrafia.com
Diego sent me some of his hand-made #pinhole cameras, which I placed all over Paranal. So what do we see here? See thread below 👇
Just bought RC Astro's BlurXTerminator plugin for PixInsight.
This is a comparatively cheapo SkyWatcher 80ED with lousy "flattener" maladjusted, near the far-left middle edge of the frame, before and after running BlurXTerminator.
I had to check twice I was still comparing the same section of the frame, it's that radical an improvement.
❌ Please absolutely DO NOT buy some ultra-cheap Black Friday deal telescope from Amazon or Walmart. (These are all utter shit and unusable and will ruin the hobby for you or your kids.)
🌌 The best thing to do is to go to a star party and try out telescopes!
We just released a HUGE mosaic of the so-called Running Chicken #Nebula: 1.5 billion pixels full of young stars and glowing hydrogen gas. The mosaic comprises data acquired with the VLT Survey #Telescope at ESO's Paranal Observatory in #Chile
Is there any reasonable way to shoot with standardized filters with an off the shelf dslr? I have a home decor project in mind that id like to use a standard SDSS g and r for (or maybe a couple of the hst filters depending on how I’m feeling). But like I don’t really wanna be constrained to Nikon’s R, G, and B filters.
In recent months I have experimented with shift-and-add techniques to do #astrophotography with mobile phones. This image is last night's attempt to image the Whirlpool Galaxy (M51).
The "we live in the future" aspect of this is that one can now make an image like this using only a small (20cm), non-tracking, alt-az telescope at a moderately light-polluted site and only a mobile phone camera as a detector. The result is good enough to do aperture photometry on the stars.
Well, looks like my #astrophotography run last night was a bust. Not sure whether it was a thin layer of clouds or light pollution, but all the images are too bright to do anything with.
It might have worked last week because I was using a Ultra High Contrast filter, which I didn't use last night. That was intentional, because I wanted to see how much difference it makes. Apparently the answer is "a lot"
So I caught the ISS today! Doesn't look as good as I hoped. Had to use my DSLR instead of astrocam because I had limited time during work to do this. I'll have to process the file after work tonight and see if I can make it a bit sharper. #astronomy#astrophotography#solar#sun#ISS
One of those sunspots in the full disk image is the ISS.
I am interested in #astrophotography but my current equipment is quite limited; I have my dad's Canon EOS 5D Mark III (which is defintively a good camera) with a 135mm camera lens as well as a 90/1000 Omegon achromatic refractor telescope on a quite flimsy equatorial mount without goto or automated tracking.
I am considering getting a better telescope but I have no idea where to start. Are there some telescopes you can recommend I won't have to spend a fortune on?
Random question for the Fediverse. Friend looking at a #NexStar 8SE for a #telescope for a house in a great dark sky location. Opinions? Alternatives? Mainly for looking at live, but if there are good alternatives for casual astrophotography, I think they would appreciate the capability. Thanks! #astronomy#photography#space#astrophotography#telescopes
I made a new blog post, and in it I show how I build a device to monitor the voltage of a 12V battery and share it over the Internet. Something that might be useful for remote astrophotography rigs or when building off-grid power installations. I'm using a Raspberry Pi Pico and some basic circuitry to make it all work. Take a look!
If you have the chance to see the upcoming solar #SolarEclipse on April 8, go for it! Even if you've seen an annular #eclipse or an almost total one, the difference between that and a fully total one is like night and day –– pun intended!
Here's a shot I snapped of the 2019 eclipse from ESO's La Silla Observatory in #Chile. I vividly remember seeing the #Moon 's shadow crawling towards us from the Pacific Ocean. Unforgettable!