LEARNED IT · 11/26
On the phone, the wide lenses did all the work and zoom did none
Of nineteen phone frames of the night sky, eight of the eleven on the 0.5x and 1x lenses at up to ten seconds were keepers. All eight zoomed frames, 48 to 200 mm, were rejects.
On 8 and 9 November, from the back yard, with no Moon:
| lens | frames | keepers | longest exposure |
|---|---|---|---|
| 0.5x, 14 mm | 2 | 1 | 10 s |
| 1x, 24 to 28 mm | 9 | 7 | 10 s |
| zoomed, 48 to 200 mm | 8 | 0 | 10 s on a crop, 0.5 s on the telephoto |
The Large Magellanic Cloud came out at 10 s, ISO 1600 to 3200, on the main lens. The cleanest was ISO 1600.
Zoom on the phone is mostly cropping, so it is empty magnification again: the same light spread over more of the picture, with the noise and any trailing enlarged with it. The real telephoto is a smaller, slower lens, and at night the phone held it to half a second.
For the night sky, the main lens, ten seconds, and nothing zoomed. For anything small, M42 included, the telescope.