Aurora, April 23, 2023

Aurora Borealis, April 23, 2023

Last night, Kath­leen said to me, “I hear the auro­ra should be good tonight.” I checked the app on my phone that shows me the auro­ra data. Every­thing looked pret­ty good except the Bz val­ue, which was about +17. (For a good show, you want the Bz to be neg­a­tive. The longer it’s been neg­a­tive, the better.)

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Aurora, March 23, 2023

Aurora Borealis

Wow, that was a show.

The data looked ridicu­lous from the out­set. There’s one para­me­ter, when you’re con­sult­ing the ora­cle (sor­ry, the space-weath­er data), the Bz, that you want to be a neg­a­tive num­ber. I’ve seen great shows when the Bz was around ‑3 or ‑5. The longer it’s neg­a­tive, the better.

Yes­ter­day after­noon, every time I checked, the Bz was around ‑15. Crazy.

And the auro­ral oval looked like this. When it’s yel­low, that’s usu­al­ly a good sign. Red—that much red—is flat-out amazing.

The auroral oval from spaceweather.com, showing a large red patch over central North America
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Saturday night’s show

Aurora Borealis (panorama)

We went down to Bois­se­vain on the week­end to help out with the Dun­rea Flea Mar­ket[1]It rather out­grew the avail­able space in Dun­rea., and stayed over at our friends’ farm­house a few miles south of town. There were a few shows put on by the North­ern Lights that night; I caught one of them. They danced for about 20 min­utes while I watched. Here are some of the pho­tos I got.

I tried to cap­ture a panora­ma, to show just how much of the sky was involved. Unfor­tu­nate­ly my image-stitch­ing pro­gram balked at cre­at­ing a panora­ma; the auro­ra were mov­ing too much for the soft­ware to find sim­i­lar­i­ties in the pho­tos. I man­u­al­ly aligned them instead.

Aurora Borealis (panorama)

And I did up a quick time­lapse. The 33 sec­onds of video rep­re­sents about 33 min­utes of pho­tos, each one a 5‑second exposure.

When the show was wind­ing down, I turned around and saw that the Milky Way was high above the farm. One more pho­to, I thought, then I’ll go inside.

The Milky Way above the farm

Foot­notes

Foot­notes
1 It rather out­grew the avail­able space in Dunrea.

Friday night in the park

Star Trails at Spruces

My friend Tim was camp­ing at Wasagam­ing, as is his wont on the Sep­tem­ber long week­end. I went to vis­it on Fri­day evening.

We head­ed up to Spruces to check out the sunset…

…and the moon.

Lat­er, the galaxy appeared as the moon set.

And I decid­ed to try to catch Jupiter with my 55–250mm lens, which is usu­al­ly too shaky at 250mm. It seems to have worked. (If I’m read­ing this right, the moons are, L‑R, Cal­lis­to, Europa, and Io.)

Jupiter, with moons Callisto, Europa, and Io visible

After I dropped Tim off at his camp­site, I saw that the auro­ra were mak­ing an appear­ance. I stopped in a few places (the beach in Wasagam­ing[1]Man, I real­ly don’t like the orange lights at the beach, the dock on the golf course road, and on the road­side on #10 highway).

Foot­notes

Foot­notes
1 Man, I real­ly don’t like the orange lights at the beach

Aurora, Aug. 19–20, 2022

Aurora Borealis, Aug. 20, 2022

Last night, the auro­ra data looked good, and also the sky was clear (unlike oth­er nights late­ly). I packed my cam­era and tri­pod, then head­ed out to one of my favourite spots (Twin Pines Field, let’s call it) about 10:45pm.

The tem­per­a­ture dropped while I was out, going from about 24°C to 17°C. Every­thing got coat­ed with a slick of dew, including—as you can see in the last photo—my lens[1]Actu­al­ly, it was the trans­par­ent UV fil­ter over the lens, which was much eas­i­er to wipe clean. Phew..

All told, I shot almost a thou­sand images, each one a 5‑second expo­sure[2]Nerds: 11mm, 5s, f/2.8, ISO 3200., which con­ve­nient­ly means that mak­ing a time­lapse at 12 frames a sec­ond cre­ates a video where 1 sec­ond of video = 1 minute of real time. So my hour and twen­ty min­utes at Twin Pines Field con­dens­es into a minute and twen­ty sec­onds for your edutainment.

Enjoy!

Foot­notes

Foot­notes
1 Actu­al­ly, it was the trans­par­ent UV fil­ter over the lens, which was much eas­i­er to wipe clean. Phew.
2 Nerds: 11mm, 5s, f/2.8, ISO 3200.

On a cloudy night

Lighthing on the horizon

The auro­ra fore­cast was great, but the earth­ly fore­cast was clouds, clouds, clouds. I ven­tured out any­way, hop­ing against hope for a small break in the clouds.

On the back road I chose, there were clouds all around, and lightning—lots of it—to the south and east. I did­n’t hear any thun­der, but there were moments where the clouds lit up from with­in. I man­aged to get one bright bolt in focus.

Look­ing up, I saw that there was indeed a break in the clouds, just large enough for Jupiter to shine through. If you view the pho­to full-size, you’ll see two moons as well: Cal­lis­to on the left and Ganymede on the right (if I’m using this tool correctly).

Jupiter, with Callisto and Ganymede visible

Then, before head­ing home, I decid­ed to take a cou­ple shots of the north­ern sky. There was a hint of green to it. This is the best pho­to I man­aged of the auro­ra try­ing to peek through the clouds.

Clouds with a bit of auroral green

And then I went home.