brite constellation

brite constellation插图

BRIght Target Explorer
BRITE (BRIght Target Explorer) Constellation is a network of five nanosatellites to investigate stellar structure and evolution of the brightest stars in the sky and their interaction with the local environment.

What makes the Brite nanosatellites unique?

The BRITE nanosatellites operate in low-earth-orbits which allow for a superior time coverage and data length, not obtainable from ground. Both are crucial for a detailed asteroseismic study, which also benefits from two-colour information.

How will Brite help astronomers learn more about supernova explosions?

(Credit: UTIASSpace Flight Laboratory) Thanks to BRITEConstellation—the first space astronomy mission to be carried out with nanosats—astronomers will be able to learn more about the structure and evolution of the most luminous stars, including massive blue stars that are the precursors to supernova explosions. How will BRITEdo this?

Who is involved in the Canadian contribution to Brite?

Emeritus professor Anthony Moffat (Universit de Montral) is the scientific mission lead for the Canadian contribution to BRITE. Prof. Jaymie Matthews (University of British Columbia), Prof.Stefan Mochnacki and Prof.Emeritus Slavek Rucinski (University of Toronto) are also part of the Canadian BRITEteam.

What is the payload of a nanosatellite?

The science payload of each nanosatellite consists of a five-lens telescope with an aperture of 30 mm and the interline transfer progressive scan CCD detector KAI 11002-M from Kodak with 11 M pixels, along with a baffle to reduce stray light. The optical elements are housed inside the optical cell and are held in place by spacers. The photometer has a resolution of 26.52 arcsec/pixel and a field-of-view of 24º. The mechanical design for the blue and for the red instrument is nearly identical; only the dimensions of the lenses are different (Ref. 6) and Ref. 7) .

What is the Austrian brite?

? October 2018: On 25 February 2013 the first Austrian satellites TUGSAT-1/BRITE-Austria and its sister satellite UniBRITE were launched. They are part of the world’s first nanosatellite constellation, called BRITE (BRIght Target Explorer), dedicated to the observation of the brightness variations of massive luminous stars. The constellation consists of five nearly identical spacecraft from Austria, Canada, and#N#Poland. Despite a design lifetime of two years the spacecraft with a mass of about 7 kg are in healthy conditions and are continuing to deliver science date with unprecedented quality. The Austrian BRITE satellites are operated on a continuous basis from the ground station at TU Graz, the Polish ones from Warsaw and the Canadian satellite from Toronto. The S-band/UHF ground stations are fully compatible and interoperable via the Internet, thus allowing operations of any spacecraft from any other station remotely. 26)

What is the name of the spacecraft in the constellation?

All spacecraft in the constellation use the GNB (Generic Nanosatellite Bus) platform, also referred to as CanX-3, developed at UTIAS/SFL (of CanX-2 heritage). The first BRITE satellite, UniBRITE, is being built by SFL for the University of Vienna. The second BRITE satellite, BRITE-Austria , is being developed by the Graz University of Technology with assistance (components) from SFL. The BRITE team has asked the Canadian Space Agency (CSA) to complete the BRITE constellation with funding for two Canadian BRITE nanosatellites.

Why use a constellation of nanosatellites?

For one, each telescope will be optimized to work with only one color filter . By collecting color and intensity data from at least two different BRITE satellites, each with a different filter, the science capacity of BRITE is greatly enhanced. Color provides temperature information that helps astronomers to better identify modes of oscillation.