Partial Solar Eclipse — 25 Oct 2022

Published @eknova.fi: · Author: · Original (Finnish): Osittainen auringonpimennys 25.10.2022

We were lucky to get a second partial solar eclipse within a year and a half. The best part: the forecast promised sunshine, and the sky really was almost cloudless.

I quickly walked to a suitable spot on our home street and started recording the eclipse. I set up my Canon EOS 600D to take images roughly every two minutes.

First image at 12:34

As a filter I used a Baader AstroSolar Safety Film (ND 5.0) ordered from Ursa. I had previously designed and 3D‑printed a holder for my 250 mm telephoto lens, so mounting the filter was quick and secure.

Camera equipment: Canon EOS 600D, 55-250 mm zoom and solar filter (the oblique position of the filter emphasizes the speed of the shot)

I had installed the Magic Lantern software on the camera’s memory card, which made interval shooting easy. Even with automation, I still had to keep an eye on framing and exposure as the Sun drifted and the light changed slightly.

Shooting in the crisp autumn air was a pleasure. Near maximum eclipse there were thin clouds at times, but they were light enough that I could still keep the Sun safely in frame and continue the time‑lapse sequence.

The shape of the sun is clearly visible through the thin cloud cover. The arrow indicates a reflection of the sun. The pictures were taken with a phone camera.

Just before the maximum phase I also took a few “single shots” to capture sunspots. In the image you can see several active regions (AR3126, AR3130 and AR3131), and the rough limb of the Moon is nicely visible against the solar disk.

Solar eclipse at 1:12 PM, active regions AR3126 at the edge of the eclipse near 2:00 PM, AR 3130 around 4:00 PM, and AR3131 at 9:00 PM.

By the end of the eclipse I had 69 frames on the memory card. From these I compiled a simple animation, where the Moon’s motion and curvature are easy to perceive as it bites into the Sun and then slowly moves away.

Partial solar eclipse on October 25, 2022 from 12:34 PM to 2:44 PM. Towards the end, clouds occasionally interfered, but the course of the eclipse was visible even then.

Translation prepared from the club’s web magazine. Images embedded from the Finnish original.

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