Visibility IV / V
I filmed this play through a particularly dark Kodak Wrate gelatin ND filter I slid into the bottom of a 4.5 milligram Sigma. I got 30s shutter speeds with aperture f13. I was most pleased to be able to see the lower solar arc in the mirror (I pierced Martikainen with an enthusiastic message about this in the hectic nature of the situation), but the joy was reduced afterwards by the statement that I didn't notice the Wegener next door.
At its best, the 46 ° overhang was really impressive in its color and intensity. This play would have certainly slipped past my eyes unless I had woken up by chance at 5 in the morning when I woke up. The cloudy sky meant stuff like the cloud, and considering yesterday's play in the Simo-Ii-ym area, I thought it would be better to go out in ambush in case it was Joensuu's turn today.
With an aperture of f22, I could have pulled 60-90s of exposures, which already means so little use of the shutter that I could harness the SLR camera into an automatic halo camera. Admittedly, that Wratten lowers the quality of the image, but there might still be an acceptable trade-off in automatic camera jobs.
1. 10x30s, best phase 0901-0907
2. 10x30s, from previous to next, here Parry looks a little better
3. A single image of the best stage with a light worm
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Added two more consecutive images as a comparison to the visual impression. At 0901 Martikainen was left with the text "aak in the mirror seems to be" and followed by 0902 "now basic". (Text transmission data is only to the nearest minute).
Figure 4. The exposure started at 090124 and this aak’s is exactly as it was: a short snippet that wasn’t so clearly a halo that it dared to put certain sound weights on the message.
Figure 5. Exposure started at 090228 and now a clear arc corresponding to the certainty obtained by visual observation.
There is a small usme in the pictures. I didn’t have auto shooting on, which explains the half-minute break between the pictures. One should not text when the mood is at its hardest if you go manually.
This "analysis" is also more merciful to my failure of the Wegener visual. After all, that doesn't show in the pictures in practice, it was only a longer stack that brought it out, which means that it must have been very difficult if not impossible to see.
In addition, it must be taken into account that even these individual images are 30s of exposures, which gives an advantage over the image registered by the eye.