Viewing profile — onetwentythree

Yes, but remember they are very different telescopes for different types of astronomy. Roman is a survey telescope with a wide field of view, designed to discover new objects, etc.…

To provide more information than the others who responded: typical sprinkler systems are not automatically activated in response to a fire alarm. Each sprinkler head has a small gl…

You can get multi-turn absolute encoders for these applications.

I don’t think they’re in trouble for missing the deorbit target. The concern is that the second stage didn’t perform as expected. What if that affects the primary mission on the ne…

That only applies to linear regulators. The router on this page uses a switching regulator. Switching regulators have a relatively constant power draw over the entire input voltage…

Not sure about a mission as old as voyager, but most modern missions use CCSDS protocols, which are open and available online. But just because you know the protocol dues not mean …

The shock typically comes from the release of the preload, not from the NEA itself.

Maybe I’m wrong, but having it classified as a planetary mission probably funds their positions and a lot of continued research (even if the research is based on data already taken…

It uses NASA’s Deep Space Network. There are three stations around the globe (California, Australia, and Spain), spaced so that there is near continuous coverage for deep space mis…

I know this is a joke but... JWST does not use a typical flash-based SSD. The mass storage is all SDRAM. There are layers of error correction and scrubbing to handle bit flips.

There are only 8 hours of downlink time per day. DSN resources are limited and shared among many missions. Everything was sized based on the expected volume of data that the telesc…

The antenna is steered to point towards the DSN antenna on the earth. A larger moving mass would make it harder to maintain telescope pointing while the antenna is moving. In reali…

There’s no way to mitigate the risk of statistically random meteorites that can come from any direction. The primary mitigation is to use predictions of larger events, such as mete…

There is no consumable liquid helium. Past space telescopes have used consumable coolant, but JWST has a closed refrigeration system to cool the one instrument that requires active…

Yes, that is being planned for, but I’m not sure if any cycle one proposals involve joint observations. https://jwst-docs.stsci.edu/jwst-opportunities-and-policies/...

The spacecraft will make corrections with its onboard thrusters over the course of the mission.

Yes. Power supplies up to 60VDC are typically designed to fall under SELV and are considered intrinsically safe. SELV requires isolation and a single fault tolerant design. Here is…

Yes, you’re correct, but NASA is funding ~97% of the project. CSA and ESA each contributed a science instrument, and ESA is providing the launch. Otherwise, it’s all NASA.