ExTrA (Exoplanets in Transits and their Atmospheres)

Go down

ExTrA (Exoplanets in Transits and their Atmospheres)

Post by Led_Zep on 20th May 2017, 5:07 pm

https://www.eso.org/public/unitedkingdom/teles-instr/lasilla/extra/?lang

Exoplanets in Transits and their Atmospheres

ExTrA employs a novel approach to the transit method; it observes at infrared wavelengths, where M dwarfs are brighter, and adds spectral information to the usual photometric measurements. Its three telescopes collect light from the target and from four comparison stars; the light is then fed through optical fibres into a near-infrared spectrograph. In this cost-efficient approach, the light from all three telescopes is fed into just one multi-object spectrograph.
This innovative approach of adding spectroscopic information to traditional photometry helps to correct the disruptive effect of Earth’s atmosphere, as well as errors from instruments and detectors. In addition, M dwarfs appear much brighter at infrared wavelengths — increasing the precision achievable and boosting the survey’s efficiency.
avatar
Led_Zep
Jovian
Jovian

Number of posts : 560
Location : France
Registration date : 2011-09-09

View user profile

Back to top Go down

Re: ExTrA (Exoplanets in Transits and their Atmospheres)

Post by Led_Zep on 24th January 2018, 11:09 am

http://www.eso.org/public/unitedkingdom/news/eso1803/?lang

First Light for Planet Hunter ExTrA at La Silla

A new national facility at ESO’s La Silla Observatory has successfully made its first observations. The ExTrA telescopes will search for and study Earth-sized planets orbiting nearby red dwarf stars. ExTrA’s novel design allows for much improved sensitivity compared to previous searches. Astronomers now have a powerful new tool to help in the search for potentially habitable worlds
avatar
Led_Zep
Jovian
Jovian

Number of posts : 560
Location : France
Registration date : 2011-09-09

View user profile

Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum