The diffraction limit (under 1.22 h* lambda/d) of a 1m optic at 250km in visible light is about 17cm. How can you achieve 10cm resolution?

Clarity is designed for a GSD (ground sample distance) of 10 cm. Generally the industry uses resolution<>GSD interchangeably. Agree it's not the true definition of resolution. But I'd argue the diffraction limit is an incomplete metric as well, like how spatial sampling is balanced with other MTF contributors (e.g. jitter/smear). For complete metrics, we like 1) NIIRS or 2) % contrast for a given object size on the ground (i.e. system MTF translated to ground units, not image-space units).

The main performance goal for us was NIIRS 7, and we decomposed GSD/MTF/SNR contributors optimized for affordability when we architected the system

How do you manage along-track smear? At those altitudes you're pushing close to 8km/s. Traditionally you'd either need to keep the satellite rotating through the collect or somehow keep the integration time in the single digit microseconds.

TDI (time delay integration)

A little more detail that we didn't get into in the post. The 3-CMG control mode we first uploaded was v1. We had plans to improve the agility with later versions. In v1, we didn't have quite enough rate to match earth's, even with max TDI. We called it Banana Scanning. Kind of like slipping over the earth.

Net - the CMG imagery we captured had a few pixels of along-track smear in it. Which would have been removed in post-processing if we had made it through focus cal.

Thanks for the response!

I assume you were setup with a linescan then instead of butcher block FPA?

On the Jane Goodall page: https://en.wikipedia.org/wiki/Jane_Goodall#Gary_Larson_carto...

At least a few years ago (~2014), the fare search was actually nearly instant, but all major airfare search sites added a delay because customers had the impression they were getting a better deal when they had to wait. It seems like the delay has been dialed back lately.

I’m not sure why people are making a big deal of it. At my gym it took maybe 3 minutes. You tie a knot and show you know how to take up slack. And it only needs to be done once.

There is a second test for lead but most people take a class and get the lead card during the class.

When you are modifying a long closure and don’t notice that you are shadowing a variable that is used later.

I know “use shorter functions” but tell that to my coworkers.

The worst part is that the sales person has to go back and pitch their team on whether it’s worth their time to get back to you.

Really curious about this:

> If you have access to a program named 'Purify' ... learn how to use it.

Anyone know what this was or use it?

It's a memory debugger, in the same class of things as Valgrind: https://en.wikipedia.org/wiki/PurifyPlus

Fun fact: it was written by the cofounder and chairman of Netflix.

Quick google suggests it was https://pages.cs.wisc.edu/~hasti/cs368/CppTutorial/NOTES/PUR...

It's kind of like Valgrind and was (is? I'm not sure.) used for finding memory leaks.

“10x price hike” would have been totally clear. “Factor of 10 price hike” would probably be a formal way to say it.

The Debian images (https://raspi.debian.net/) haven't been updated recently and don't support the Pi 5 at all. And support for other hardware is inconsistent.

How is this any different from going into a Panda Express and trying to order in Mandarin?

Because it's called a McFlurry on the menu. Japan is very fond of taking loanwords from English but changing the pronunciation and meaning, which can be one of the hardest parts of any language.