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The IPERCOOL consortium are leading and collaborating on a number of ongoing parallax programs.

The Torino Observatory Parallax Program (TOPP) using the 1.05m OATo Telescope for Astrometry and Photometry (OTAP) with a astromed CCD is focused on finding distances of a sample of 30 M dwarfs including binary systems and systems on the star – brown dwarf boundary using observations completed in 2002.

The PARallaxes of Southern Extremely Cool objects (PARSEC) is concentrating on 100+ L and bright T dwarfs using the ESO 2.2m and the WFI detector. The observations were completed in 2011 and the results will be made available soon.
Get results

The Robotic Parallax Program is using the 2.2m Liverpool Telescope with RATcam to look at 10 peculiar L dwarfs. A publication with first results has just been submitted. Get results

The UKIDSS T dwarf followup program using the 3.5m UKIRT telescope with the WFCAM detector has a sample of 31 primarily cool T dwarfs discovered in the UKIDSS durvey and 3 Y dwarfs discovered in the WISE survey.Get results

The NTT PARallaxes of Southern Extremely Cool objects (NPARSEC) is using 96 nights on the 3.5m NTT ESO telescope with the SOFI detector to survey 80 objects across the T dwarf spectral range. Get results

In addition this group have collaborated on various proposals submitted and under consideration for the determination of distances of unpublished Y dwarfs and the followup of more peculiar L/T dwarfs. Get results


A plot of all L and T dwarfs with 50pcs as of 2010. The ones with crosses will be seen by Gaia, the others
will be too faint in the G band.



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