shipilev's profile picture. In love-hate relationship with machines. Doing weird stuff, so you don't have to. Personal account, expect no perfection. Currently: everything OpenJDK at AWS.

Aleksey Shipilëv

@shipilev

In love-hate relationship with machines. Doing weird stuff, so you don't have to. Personal account, expect no perfection. Currently: everything OpenJDK at AWS.

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Perl regex engine is my totem animal.

shipilev's tweet image. Perl regex engine is my totem animal.

Did you know that some German cities like Potsdam have the special sidewalk areas, where you can park a telescope near a conveniently placed bench? (It is actually dark, the photo is very HDRed)

shipilev's tweet image. Did you know that some German cities like Potsdam have the special sidewalk areas, where you can park a telescope near a conveniently placed bench? (It is actually dark, the photo is very HDRed)

Full Moon (November 2025) -- first data processed from the stripped down FRA500 setup, which I nominally assembled for deep-sky, but it can be adjusted for non-demanding planetary work too: app.astrobin.com/i/zfk64u


Yay, new imaging rig assembled and tested on terrestrial. Not visible here: f/3.9 reducer which, combined with 90mm aperture, is going to make this uberfast, cutting exposures (smashes calculator) 4x compared to old one. Useful when I have only a few hours a week shooting things.

shipilev's tweet image. Yay, new imaging rig assembled and tested on terrestrial. Not visible here: f/3.9 reducer which, combined with 90mm aperture, is going to make this uberfast, cutting exposures (smashes calculator) 4x compared to old one. Useful when I have only a few hours a week shooting things.

How dry do you want your astro-camera to be done? -- Yes.

shipilev's tweet image. How dry do you want your astro-camera to be done? -- Yes.

RepairCafe: Saturday, Oct 25, 11:00..15:00 at Potsdam SLB. Come bring your curiosity and your broken devices. We can tinker together, maybe successfully, maybe not, but it should be fun either way. We speak German, English, Russian.


Processed C/2025 A6 (Lemmon) comet result is now here: app.astrobin.com/i/le4ios. Bonus: tail video to show how the tail develops over time: app.astrobin.com/i/34bmp1


I loved you, Coronado PST. I hated you, Coronado PST. You gave me the best Sun Hα images. You gave me the worst Sun Hα images. Now it is time to fulfill your destiny and become the integral part of much larger imaging train. (Shout out to AOK Swiss for consulting and adapters!)

shipilev's tweet image. I loved you, Coronado PST. I hated you, Coronado PST. You gave me the best Sun Hα images. You gave me the worst Sun Hα images. Now it is time to fulfill your destiny and become the integral part of much larger imaging train. (Shout out to AOK Swiss for consulting and adapters!)
shipilev's tweet image. I loved you, Coronado PST. I hated you, Coronado PST. You gave me the best Sun Hα images. You gave me the worst Sun Hα images. Now it is time to fulfill your destiny and become the integral part of much larger imaging train. (Shout out to AOK Swiss for consulting and adapters!)

Deutschlandmoment (n): Wenn neue Bankregeln vorschreiben, dass Empfängername und IBAN übereinstimmen müssen, akzeptiert die Bank jedoch keine richtig langen Empfängernamen.

shipilev's tweet image. Deutschlandmoment (n): Wenn neue Bankregeln vorschreiben, dass Empfängername und IBAN übereinstimmen müssen, akzeptiert die Bank jedoch keine richtig langen Empfängernamen.

"How did you expect your workweek to be like" vs "How was your workweek actually like"

shipilev's tweet image. "How did you expect your workweek to be like" vs "How was your workweek actually like"
shipilev's tweet image. "How did you expect your workweek to be like" vs "How was your workweek actually like"

Finally moved my most promising astrophotography results from the last months to AstroBin, enjoy: app.astrobin.com/u/shade


Ever seen a verbose render how a very small GC operation looks like in the context of larger safepoint? Here it is: (I need to blog about things you can see there)

shipilev's tweet image. Ever seen a verbose render how a very small GC operation looks like in the context of larger safepoint? Here it is: (I need to blog about things you can see there)

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