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Kacper Wierzchoś @wierzchos.bsky.social · 12/07/2026

Storm over Kitt Peak. Shot on Polaroid I-Type B&W film.

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Kacper Wierzchoś @wierzchos.bsky.social · 08/07/2026

Cloudy skies over Kitt Peak... monsoon has arrived.

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Reposted by Kacper Wierzchoś

David Rankin @asteroiddave.bsky.social · 19/06/2026

Took me 10 years of back yard comet hunting to pull this off. Unfortunate there isn't a cash award anymore. Plaque is nice tho.

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Kacper Wierzchoś @wierzchos.bsky.social · 29/03/2026

Nice day sailing on Lake Patagonia.

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Kacper Wierzchoś @wierzchos.bsky.social · 06/03/2026

C/2024 E1: 2026 Mar 06 02.42 UT; m1= 9.2; Dia= 4’; DC= 3; 12.5 cm B x20 [Mt. Lemmon, Arizona, USA]

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Kacper Wierzchoś @wierzchos.bsky.social · 21/02/2026

1/2 Today at 02:54 UTC I achieved something of a dream of mine. After several failed attempts over the past few nights, I was finally able to observe one of my comets visually through a break in the clouds with my old Vixen 20x125 binoculars from Kitt Peak National Observatory.

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Kacper Wierzchoś @wierzchos.bsky.social · 15/02/2026

Ok I promise this is the last picture of my comet that I'll post but I think this one is my favorite. Image by Beáta Ujvárosi.

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Kacper Wierzchoś @wierzchos.bsky.social · 11/02/2026

Image of comet C/2024 E1 (Wierzchos) showcasing what appear to be not one, two or three but four tails. Image obtained by Gerald Rehman and Michael Jaeger.

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Reposted by Kacper Wierzchoś

David Rankin @asteroiddave.bsky.social · 27/01/2026

Congrats to @wierzchos.bsky.social on this beauty! C/2024 E1 (Wierzchoś) is putting on a show for southern hemisphere observers right now. 📷 by renowned comet photographer Gerald Rhemann. 🔭

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Kacper Wierzchoś @wierzchos.bsky.social · 28/12/2025

Always a blast to make it to the print edition of Sky & Telescope.

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Kacper Wierzchoś @wierzchos.bsky.social · 08/12/2025

My son after seeing the sea for the first time :)

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Reposted by Kacper Wierzchoś

David Rankin @asteroiddave.bsky.social · 11/11/2025

For the folks that are still struggling with this. Here is a Venn Diagram. #3I/Atlas #3I 🔭

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Kacper Wierzchoś @wierzchos.bsky.social · 29/10/2025

First time on campus with the baby! I think he had a blast.

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Kacper Wierzchoś @wierzchos.bsky.social · 26/10/2025

Today at the helm of my sailboat "Comet" during her maiden voyage.

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Kacper Wierzchoś @wierzchos.bsky.social · 11/10/2025

Meet Comet, my first sailboat. She's a West Wight Potter 15, a classic design from the 1960s. This example was built in 2003 and is in fantastic condition. This sloop has a cabin with two beds for overnight adventures and her maiden voyage will take place later this month in Patagonia Lake.

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Kacper Wierzchoś @wierzchos.bsky.social · 23/08/2025

Now if I could have some clear skies...

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Reposted by Kacper Wierzchoś

Maik Meyer ☄️ @comethunter.de · 13/06/2025

This discovery by @wierzchos.bsky.social still looks to be on course to become a nice binocular comet or even more around the turn of the year. ☄️🔭 #CometWatch

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Kacper Wierzchoś @wierzchos.bsky.social · 25/04/2025

Art Deco in Tucson shot with Polaroid I-Type B&W film. #polaroid #b&wphotography #analogphotography #filmphotography

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Kacper Wierzchoś @wierzchos.bsky.social · 25/04/2025

Mission San Xavier del Bac shot on Polaroid I-Type B&W film. #polaroid #b&wphotography #analogphotography #filmphotography

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Reposted by Kacper Wierzchoś

UArizona Lunar and Planetary Laboratory @uarizonalpl.bsky.social · 17/04/2025

Check out the new NASA film, "Planetary Defenders" which features some familiar LPL faces! youtu.be/jOb2DQWvDvc?...

youtu.be

Planetary Defenders (NASA+ Original)

YouTube video by NASA

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Kacper Wierzchoś @wierzchos.bsky.social · 12/04/2025

Looking at photographic plates with a loupe is the closet experience to looking through the eyepiece of a telescope. These were obtained by Gerard Kuiper himself.

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Kacper Wierzchoś @wierzchos.bsky.social · 21/03/2025

Achievement unlocked. JWST observed one of my comets. This if from Colin Snodgrass et al. "First JWST spectrum of distant activity in Long Period Comet C/2024 E1 (Wierzchos)" arxiv.org/pdf/2503.14071

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Kacper Wierzchoś @wierzchos.bsky.social · 18/03/2025

Check this article that features my friend and CSS colleague David Rankin. It's the best description of what we do as the forefront of Planetary Defense. theamericanscholar.org/asteroid-hun...

theamericanscholar.org

Asteroid Hunters - The American Scholar

The scientists and engineers who defend our planet day and night from potentially hazardous space rocks

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Kacper Wierzchoś @wierzchos.bsky.social · 26/02/2025

Working on Kitt Peak tonight. Forecast is looking good.

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Reposted by Kacper Wierzchoś

Rob Seaman @robseaman.bsky.social · 21/02/2025

Dr. Al Grauer is my friend and colleague from the Catalina Sky Survey. Al has been producing his astronomy podcast, Travelers In The Night, for many years. These are brief two-minute episodes of science in the news. Well worth adding to your listening options or passing on to a friend. #PlanetSci

podcasts.apple.com

Travelers In The Night

Astronomy Podcast · 1,000 Episodes · Updated Semiweekly

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Kacper Wierzchoś @wierzchos.bsky.social · 18/02/2025

Astronomers of Blue Sky, please sign this petition.

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Reposted by Kacper Wierzchoś

David Rankin @asteroiddave.bsky.social · 09/02/2025

Here is the infamous near-Earth asteroid 2024 YR4 from Gemini S acquired with a joint proposal from Catalina Sky Survey (Dr. Wierzchos) and Bryce Bolin. It's currently very faint and approaching magnitude 24. Really pops out with the 8m glass. 🔭🧪

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Kacper Wierzchoś @wierzchos.bsky.social · 03/02/2025

Self portrait at work no. 2. This one is the Bok telescope on Kitt Peak (MPC code V00). May the night be clear because I'm itching to find stuff.

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Kacper Wierzchoś @wierzchos.bsky.social · 03/02/2025

Replying to work emails from my backyard when I noticed this deer spying on me.

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Kacper Wierzchoś @wierzchos.bsky.social · 22/01/2025

Well this took more work than anticipated, but my solo guitar EP "A Bouquet of Tunes" is out on vinyl :)

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Kacper Wierzchoś @wierzchos.bsky.social · 18/01/2025

Having fun with Comet for Widows. The last time I used this software I wasn't old enough to vote. I used JPL's absolute magnitude and slope parameter to produce the light curve. Note that comets are notoriously unpredictable and nobody knows if it will reach that magnitude. #CometWatch

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Kacper Wierzchoś @wierzchos.bsky.social · 16/01/2025

My new solo guitar arrangement of Manhã de Carnaval (theme from the 1959 film Black Orpheus). www.youtube.com/watch?v=r9rC...

youtube.com

Black Orpheus - Solo Guitar (1952 Gibson ES-150)

YouTube video by Kacper Wierzchoś

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Kacper Wierzchoś @wierzchos.bsky.social · 20/05/2024

The night of May 10th brought a beautiful display of aurora borealis to Tucson and also a new comet. This all sky image was taken at Mt. Lemmon at the time of the discovery sequence of comet C/2024 J2 (Wierzchos). I marked the position of the comet upon discovery with a yellow cross.

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Kacper Wierzchoś @wierzchos.bsky.social · 12/05/2024

Last night was something to remember. I have never seen the aurora borealis and seeing the sky turn red was spectacular. I also might have discovered something interesting shooting through the red-tinted sky. Stay tuned..

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Kacper Wierzchoś @wierzchos.bsky.social · 13/11/2023

This is my telescope. There are many like it, but this one is mine.

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Kacper Wierzchoś @wierzchos.bsky.social · 02/11/2023

Hello Blue Sky. This really looks like Twitter before it became a total mess.

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