Christian Fröschlin

Metathread of all my astro animation threads

@AnthonyJCook2 Feel free to use it. Note I just saw this by accident for the time being I'm no longer actively using Twitter although you can find me on bluesky or mastodon.

@chrfrde Christian, I am recording a YouTube video about the shadow transit series now continuing though October in the Americas-central Pacific. Would you grant permission for me to use your photo, with your credit, in my video? I've seen very few images from this series.

This evening's view of #Saturn with Titan shadow transit. Somewhat blurry shot under adverse conditions (even getting rained on) but I'm happy to have caught it at all. 1000 x 50 ms RGB in Celestron 8" + ADC + 2.5x powermate.

Lots of activity on the #Sun during the #PartialSolarEclipse yesterday. Captured from #Oxfordshire, UK with a #CoronadoPST 2x Barlow & #ASI120MC camera. 2 C-class flares were in action during the time I was capturing, one from #AR14046 + #AR14048 Best 30% of 1,000 frames

Time lapse of #Jupiter system in methane band covering one hour of real time. Data from two weeks ago just got around to processing. 18 x 350 x 200 ms CH4 in Celestron 8" at f/10.

The most Nordic photo you’ll see today. The Finnish President having a snack with the Prime Ministers of Denmark, Sweden and Norway. 🇫🇮🇩🇰🇸🇪🇳🇴

@AZSportsHistory You can also shoot afocal e.g. eye-piece + smartphone holder is easier to start but not best way. Essentially the telescope is a big zoom lens you just need a camera body. A planetary cam will typically already fit the 1.25" barrel, for others you need adapter.

@chrfrde Oh okay, I didn’t know that the cameras replaced the eye pieces? That makes sense now. So you need to buy a connector as well as the camera?

Time lapse of Friday night's #Mars covering 3.5 hours of real time. Some flickering due to changing conditions, clouds, focus drift and me switching to ADC midway. 63 x 7000 x 8 ms RGB in Celestron 8" + 2.5x powermate + ADC.

Jupiter on January 3rd. A second image from this session taken later in the night. Very good seeing. The GRS is nicely seen. I actually had a good view visually through the eyepiece and was quite struck by how colourful the spot looks at present. C14 with Saturn M-SQR camera.

@TheGreatIsNate @blkgrlpoet It's like hieroglyphics, all consonants and most words we don't know the vowels so let's just say legebeteq.

This one NEVER gets old 😭

@fathytony33 bsky.app/profile/chrfrd…

@chrfrde 精妙的像素编年史。 3.5小时的火星，凝缩成一段数据流的诗歌。 那些闪烁，是宇宙的呼吸，也是观测过程中的变量。 我更感兴趣的是，你如何处理数据中的噪声，以及这背后算法的优雅性。分享一下你的代码吧，或许里面藏着一些宇宙的秘密。

@AZSportsHistory Also you want to record prime focus with camera replacing the eye piece, typically with a 1.25" barrel connector (or appropriate adapted e.g. for my camera is C-Mount to 1.25"). My camera is more of the industrial variety there are also brands more dedicated to astro like ZWO.

@AZSportsHistory I used this one. For planetary imaging you want small pixels and support for uncompressed video at high frame rate as well as regions of interest (variable image size using only part of the sensor). Most dedicated astro or industrial cameras can do it. teledynevisionsolutions.com/products/black…

@JulioCLainez I also like the Galileoscope it is small + cheap but good quality. You need camera tripod and do everything manually but can be also good for teaching. It aims to recreate Galileo's experience. Photos will be fiddly but in principle possible it has a standard connector.

@JulioCLainez I don't have lot of experience with scopes other than my own. And obviously it depends a lot on what you want observe and how much you want to invest. Something like a Celestron nextstar 4SE might be in a reasonable range for viewing + shooting some planets.

@JulioCLainez Indeed. So you can actually see the rotation of earth too it causes the entire view to rotate (changing orientation of pole).

@chrfrde So what you’re saying is that everything is relative huh? 😉

@JulioCLainez Note what you cannot really tell from the image alone is the orientation of the solar system because "up" is just my up it depends on observer latitude and time for an alt-az mounted telescope.

@chrfrde Awesome thank you!

@JulioCLainez Good questions! The second one is easy we are close to opposition so the Sun is directly behind us. It is in fact spring time now on Mars which also seems to match. axis orientation and polar ice extent. Summer will start in May (seasons are longer). planetary.org/articles/mars-…

@chrfrde Is it summer in the northern hemisphere? Where's the sun in relation to your gorgeous image?

Good 'ol Mars. Don't you love that planet. This from the good seeing last night in UK

#Mars, taken 4 years apart, one can clearly see the seasonal tilt

@SkyInspector i.e. it seems to be moving with the rotation of the planet which is strange for an artefact

@SkyInspector It's rather subtle but quite clearly visible due to the animation

Yesterday a new major outbreak began on Jupiter. A brilliant spot appeared on the southern edge of the North Temperate Belt signalling a dramatic revival of the belt has begun. Over the coming days and week this bright source will spew bright and dark material which will slowly spread around the planet to revive the belt. Other bright sources may also develop at other longitudes so keep your eyes peeled. Another key element of these revivals is that the sources are located on the fastest moving jetstream on the planet (the NTBs.) This means the material will spread rapidly as well as the sources themselves drifting rapidly in longitude from day to day. This outbreak will become dramatically turbulent as it progresses so do try and image Jupiter when ever opportunity permits! Thanks to BAA Jupiter director John Rogers for the summary image posted above.

@SoniaSulaiman It would last 3 seconds in my hand before breaking

@chrfrde I’m new to sharpening it like that! The class I’m taking suggests using a razor blade and sand paper because you can use the side of the exposed point not just the tip.

Cylinders in perspective are hard to draw!