Shoot 2025-10-25-133859 — philthompson.me

Birds
Mandel

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Shoot 2025-10-25-133859

The night of October 20th was clear here, so I got a chance to photograph Comet C/2025 A6 (Lemmon) just after sunset. I used my EF 200 F/2.8 L II (at f/4) and Move Shoot Move Nomad and got decent results, but I was more impressed by my Seestar S30's shot of the comet. I think the light pollution filter gave a boost to the little Seestar's image since there was some sky glow from the city.

I also had a fun time watching and photographing a small flock of Western Bluebirds, got photos of some Eared Grebes (a new county bird!), and managed to get a phone picture of a Eurasian Collared-Dove from the yard (a new yard bird!).

My "birds in review" collages can be found here.

Signature

📄 hashes-2025-10-25-133859.txt

📄 hashes-2025-10-25-133859.txt.sig

The above hashes-<date>.txt file contains SHA-256 hashes of all the photos from this shoot. The hashes-<date>.txt.sig is a signature of that hashes file, created with my PGP key. The signature file itself was written to both the Bitcoin Cash and Algorand blockchains, in the OP RETURN and Note fields respectively, using the transactions below. In short, this proves that these photos and the signature both existed at the time the transactions were written to the Bitcoin Cash and Algorand blockchains. This blog post has more details.

view the BCH tx on blockchair.com: 0e9dc37fece3544f58a2c75b23528552bbb207b73df306d30e23b1abbffe8707

view the ALGO tx on explorer.perawallet.app: JETRCDJ5WNIV4DUXMEUDOYM2USOZA7Z3QPCURLNOXPLIBAX4H3MQ

8:04PM Monday October 20, 2025

Comet C/2025 A6 (Lemmon)

Shot with my Seestar S30, at just over 10 minutes of total integration time.

2:25PM Friday September 26, 2025

Eurasian Collared-Dove

A poor photo, but my first yard sighting of Eurasian Collared-Dove!

2:25PM Friday September 26, 2025

Eurasian Collared-Dove

8:02PM Monday October 20, 2025

Comet C/2025 A6 (Lemmon)

Shot with my Canon EOS R5m2, and EF 200 F/2.8 L II. 23 minutes total integration time. A larger version of this image is available on my AstroBin and an animated version in a separate blog post.