I saw Landsat mentioned in chat and it reminded me of this: https://landsat365.org/

I’m using this one at the moment:

The painted dessert. Yummo

Some lovely images there, ta.

Oh my goddess!

Landsat from the very earliest days was famous for its use of false colour. Vegetation in the earliest images was always rendered in red.

I can see these appearing in a future episode of “art in the digital age”.

Sometime in the future I’d like to set up a quiz along the lines of “what planet or moon is this?”. Landsat images would be great for that.

Checking up the web, all the landsat images seem to be only 256 × 256 pixels. From imperfect memory we’re now up to the fifth satellite in the Landsat series. Landsat 5.

Checking web. I’m wrong, we’re up to Landsat 8. Need to check that imager size.

That 256 × 256 pixels cannot be found in the Landsat 8 documentation anywhere!

Small square sensor chips are combined into a staggered group of 14 on a small board. There’s a figure of 6916 mentioned. Is that divisible by 14? Yes, gives 494. Two sets of 256 minus overlap perhaps.

mollwollfumble said:

That 256 × 256 pixels cannot be found in the Landsat 8 documentation anywhere!

Small square sensor chips are combined into a staggered group of 14 on a small board. There’s a figure of 6916 mentioned. Is that divisible by 14? Yes, gives 494. Two sets of 256 minus overlap perhaps.

Each sensor appears to be 494 × 14. Each of the 14 is in a different wavelength band. So images should appear as 494 x n rather than 256 × 256.