Categories: Observatories

Tiny Shutters in the James Webb Telescope Improve its Vision

NASA has a new article on their site describing one of the technologies going into the mighty James Webb Space Telescope; the successor to the Hubble Space Telescope. They’ve created an array of microshutters which will allow the telescope to dynamically block the light from nearby objects to make distant objects easier to see.

The problem they’re trying to solve is pretty easy to understand. Imaging you’re trying to see a flashlight a few km away in the darkness. No problem. But hold the flashlight beside a bright car headlight and you’re not going to be able to pick out the light from the flashlight from the glare of the headlight.

62,000 of these microshutters sit in front of the James Webb’s detector array. Astronomers can then instruct the telescope to close up any number of these shutters so that the light from bright objects is blocked, while dimmer objects are let in. The shutters will let astronomers view up to 100 different astronomical targets simultaneously, saving a lot of time.

Original Source: NASA News Release

Fraser Cain

Fraser Cain is the publisher of Universe Today. He's also the co-host of Astronomy Cast with Dr. Pamela Gay. Here's a link to my Mastodon account.

Recent Posts

Are Fast Radio Bursts Caused by Interstellar Objects Crashing Into Neutron Stars?

Astronomers have only been aware of fast radio bursts for about two decades. These are…

2 hours ago

Here’s How to Weigh Gigantic Filaments of Dark Matter

How do you weigh one of the largest objects in the entire universe? Very carefully,…

4 hours ago

How Could Astronauts Call for Help from the Moon?

Exploring the Moon poses significant risks, with its extreme environment and hazardous terrain presenting numerous…

17 hours ago

There Was a 15 Minute Warning Before Tonga Volcano Exploded

Volcanoes are not restricted to the land, there are many undersea versions. One such undersea…

17 hours ago

Main Sequence and White Dwarf Binaries are Hiding in Plain Sight

Some binary stars are unusual. They contain a main sequence star like our Sun, while…

19 hours ago

What a Misplaced Meteorite Told Us About Mars

11 million years ago, Mars was a frigid, dry, dead world, just like it is…

21 hours ago