New device could solve “candle and lighthouse” problem
One of the biggest quests in astrophysics is to find Earth-like planets around other stars – places where life may exist. Regular telescopes are not good at directly imaging such small objects because a host star’s light generally drowns out the relatively dimmer light of a potential planet.
But a new development in space imaging may solve that vexing problem.
A study led by Florida Institute of Technology astrophysicist Daniel Batcheldor has demonstrated that a charge injection device, or CID, has the ability to capture light from objects tens of millions of times fainter than another object in the same picture. An exoplanet next to bright star is one such example. This ability is a result of how the CID is used as a type of camera: each individual pixel works independently and uses a special indexing system. Very bright pixels get addressed very quickly, while the faint pixels are allowed to carry on gathering the fainter light.
“If this technology can be added to future space missions, it may help us make some profound discoveries regarding our place in the universe,” Batcheldor said.
The study’s findings were reported in the Jan. 18, 2016, edition of the Publications of the Astronomical Society of the Pacific.
To study exoplanets in detail, scientists are forced to make observations of these very faint objects next to bright stars. The situation is often described as the candle-next-to-the-lighthouse problem, though in reality is thousands of times worse. “Current instrument technology is very complex and expensive and still a ways off from achieving direct images of Earth-like planets,” Batcheldor said.
With a grant from the American Astronomical Society, Batcheldor and several graduate students in the Physics and Space Sciences Department led the study using a CID on Florida Tech’s 0.8-meter Ortega telescope. They were able to pick out objects 70 million times fainter through the glare of Sirius, the brightest star in our night sky. That’s over one thousand times better than an off-the-shelf astronomical camera.
The fact that a faint object could be accurately detected through the less-than-ideal, thick Florida atmosphere makes the observations made by the CID more exciting. Batcheldor plans to test the CID later this year at a telescope on the Canary Islands, and a prototype for a CID is slated for testing on the International Space Station later this year. In both cases, the CIDs are being built by Thermo-Fisher Scientific.
Batcheldor’s solution is of potential interest to scientists because it is relatively inexpensive compared to other ideas, such as an external occulter like a star shade, which would require multiple, complicated components working in tandem in space for getting a glimpse of just a few small, Earth-sized exoplanets.
“Personally, I like very simple, straightforward solutions, especially when there is a complex problem,” he said. “The CID is able to look at a very bright source next to a very faint source and not experience much of the image degradation you would normally experience with a typical camera.”
The Latest on: Charge injection device
via Google News
The Latest on: Charge injection device
- Injection Pen Market New Business Opportunities and Investment Research Report by 2027on February 12, 2021 at 6:20 am
shared a COVID-19 guidance with medical device manufacturers to notify the agency about changes that could affect availability of their products. Injection Pen Market Segmentation: The research ...
- Magnetic Induction Heating Devices Recent developments in the competitive landscape forecast 2031on February 12, 2021 at 3:14 am
Moreover, industrialization in emerging economies and introduction of induction process in injection molding machines are driving demand for magnetic induction heating devices market. However ...
- Purchasing Basics: Injection molding machineson February 9, 2021 at 4:01 pm
To calculate minimum opening stroke of a molding machine, figure the stack height of your mold plus two times the core length, plus any space for an automatic part removal device. With these ...
- Structur3D advances technology with desktop injection molding platformon February 9, 2021 at 8:02 am
The new platform combines desktop injection with 3D printing to create new products ... and software side to essentially build some programmatic processes for the device." While 3D printing is ...
- injection moldon February 8, 2021 at 4:00 pm
While 3D printing has now become easily accessible and cheap, there are still several use cases where you need the advantages offered by injection molding, even for small batch runs. Professional ...
- Harnessing the topotactic transition in oxide heterostructures for fast and high-efficiency electrochromic applicationson February 5, 2021 at 4:00 pm
First-principles calculations reveal that the defect density modulation associated with hole charge injection causes a prominent change ... However, both ways are challenging to access device ...
- Trainer Jarrod McLean disqualified after pleading guilty to using EPOon February 4, 2021 at 10:27 pm
McLean pleaded guilty to a charge relating to “the administration of EPO to Cats ... “There is no excuse for administration. “The injection of it as occurs here requires a wilful act, a wilful attempt ...
- Dissipationless Quantum Spin Current at Room Temperatureon February 2, 2021 at 4:00 pm
On the basis of a generalization of the quantum Hall effect, the predicted effect leads to efficient spin injection without the need for metallic ferromagnets. Principles found here could enable ...
- A wearable multiplexed silicon nonvolatile memory array using nanocrystal charge confinementon February 2, 2021 at 4:00 pm
Flash memory devices based on single-crystal silicon (Si ... Finally, a series of AFM writings finishes the patterned charge injection. (A) Schematic showing the process of charge injection to an AuNP ...
- £20m more for on-street electric car chargers - but roll-out must speed upon February 2, 2021 at 7:09 am
The Government will make an extra £20million available to Britain's local authorities to bolster their electric car charging infrastructure. The cash injection is for kerb-side devices to be ...
via Bing News