Located in Sonoita, Arizona: 68km (42mi) southeast of Tucson, near the Mexico border

The first KELT telescope, later renamed KELT-North, is located at Winer Observatory outside of Sonoita, AZ.  Winer is owned and operated by Mark Trueblood, and hosts several robotic telescopes, including DEMONEX - one of the several telescopes used for photometric follow-up of KELT-North planet candidates.  KELT-North was installed at Winer in 2004, and science observations began in 2005.  It sits in a large, roll-off enclosure on an independent pier, alongside the other Winer-hosted telescopes.

KELT-North at Winer is located at latitude N 31° 39' 56.08" and longitude W 110°36' 06.42" at an elevation of 1515.7 meters (4973 feet).

KELT-North telescope

This picture (KN) shows the KELT-North telescope at Winer.


LensMamiya 645 80mm f/1.9
Aperture42 mm
CCD4096 x 4096 pixels, Apogee AP16E
Pixel Size9 microns
Field of View26 x 26 degrees
Plate Scale23 arcsec/pixel
MountParamount ME



Learn More.


Learn More.


Learn More.


Learn More.



Read More

KELT website receives Award of Distinction at the 25th Annual Communicator Awards

Jun 07

We are honored to have received the Award of Distinction at the 25th Annual Communicator Awards from the Academy of Interactive and Visual Arts for this website, together with our web design partners at 3twenty9 Design, LLC.

... Read More

New 'hot Jupiter' with short orbital period discovered

Jul 12

(—An international team of astronomers reports the discovery of a new "hot Jupiter" exoplanet with a short orbital period of just three and a half days. The newly detected giant planet, designated KELT-20b, circles a rapidly rotating star known as HD 185603 (or KELT-20). The finding was presented in a paper published July 5 on

... Read More

Mysterious Stellar Eclipse Point To A Giant Ringed Gas Planet Surrounded By A Ring Of Dust

Jun 07

Scientists have discovered a giant ringed gas planet which is likely caused by a mysterious stellar eclipse. The planet has 50 times mass of Jupiter and it is surrounded by a ring of dust. According to researchers from the University of Warwick, this planet is hurtling around a star more than 1000 light years away from Earth.

... Read More

New 'hellish,' hot planet rivals most stars

Jun 06

Researchers recently discovered a strange, scorching-hot planet that is only slightly cooler than our sun.

... Read More