Argus Technology Testbed construction update

The first Argus Array prototype, the mArgus technology testbed, is on-sky and undergoing testing. See a new photojournal of some of the development work here: A New Way to Explore the Night Sky

By |November 9th, 2021|Categories: Uncategorized||0 Comments

New paper on the Argus Array, the next generation Evryscope

The Argus Array, being developed by the Law group at UNC Chapel Hill, is a large (5m-aperture-equivalent) telescope consisting of 900 moderate-aperture, off-the-shelf telescopes multiplexed into a common hemispherical dome. The prototype, the Argus Pathfinder, will demonstrate the Argus concept and observe each part of the sky for nine minutes at high cadence each night.

See our new paper about large all-sky telescope arrays and the Argus Array!

We are actively building the science team for the system; please contact us (nmlaw@physics.unc.edu) if you’re interested!

By |August 4th, 2021|Categories: Uncategorized||0 Comments

Amy Glazier selected for NASA Exoexplorers

Evryscope graduate student Amy Glazier has been selected for the inaugural cohort of NASA’s Exoplanet Explorers program! One of ten early-career scientists selected nationally for the program, Amy will join the NASA ExoExplorers team, present her research to the exoplanet community, and learn from the experiences of established exoplanet researchers around the nation.

By |February 10th, 2021|Categories: Uncategorized||0 Comments

Read Dr. Jeff Ratzloff’s Thesis

Dr. Jeff Ratzloff, recently graduated from UNC, designed and built the Evryscopes’ hardware, and discovered new types of compact objects with the systems. Read his Dean’s-Distinguished-Dissertation-Award-winning thesis here!

By |February 10th, 2021|Categories: Uncategorized||0 Comments

Evryscope at AAS 2021

R. Gonzalez
Session 124. (iPoster-Plus Session) — Stellar Rotation, Variability, and Flares
124.08. Automating Superflare Spectroscopy with Evryscope and SOAR

N. Law
235.02. The Argus Array: the Deep Sky Every Minute

A. F. Vasquez Soto
Session 405 – (Oral Session) — The Sun and The Solar System
405.09. A First Look at Earth’s Orbital Space Measured with the Evryscopes
January 14, 2021, 1:20 PM – 1:30 PM

H. Corbett
Session 509 – (Oral Session) — Supernovae 3
509.08. Orbital Foregrounds for Ultra-Short Duration Transients
January 15, 2021, 1:20 PM – 1:30 PM

W. S. Howard
Session 515 – (Oral Session) — Stellar Rotation and Flares 2
515.03 D. Investigating exoplanet habitability and the stellar magnetism of cool stars across half the Southern sky via superflares, starspots, and stellar rotation.
January 15, 2021, 12:20 PM – 12:40 PM

N. Galliher
Session 515 – (Oral Session) — Stellar Rotation and Flares 2
515.04. Chasing Young Star Superflares Using the Evryscopes
January 15, 2021, 12:40 PM – 12:50 PM

A. L. Glazier
Session 515 – (Oral Session) — Stellar Rotation and Flares 2
515.05. Constraints on Post Superflare ExoAuroral Emission with SOAR and the Evryscope Fast Transient Engine
January 15, 2021,12:50 PM – 1:00 PM

By |January 2nd, 2021|Categories: Uncategorized||0 Comments

NSF funds prototype for next-generation Evryscope

We are happy to announce the NSF/MSIP development funding of the Argus Array prototype, the prototype for the next-generation Evryscope. Like the Evryscopes, Argus will cover the entire sky in each exposure, but with hundreds of quarter-meter telescopes tiled across a large dome, Argus will go far deeper.

By |November 10th, 2020|Categories: Uncategorized||0 Comments

Evryscope exhibits opens at Morehead Planetarium

Our NSF-funded Evryscope and exoplanets exhibit has opened at Morehead Planetarium. The exhibit includes a half-dome planetarium displaying real full-sky Evryscope images with gesture interactivity, an interactive activity where students learn to classify light curves and look for exoplanets, and interpretive material. See the WRAL (local news station) writeup here.

By |November 9th, 2020|Categories: Uncategorized||0 Comments

Evryscope ApJ Letter measures orbital foregrounds for ultra-short duration transients

Reflections from objects in Earth orbit can produce subsecond, star-like optical flashes similar to astrophysical transients. Reflections have historically caused false alarms for transient surveys, but the population has not been systematically studied. In a new ApJ Letter, we report event rates for these orbital flashes using the Evryscope Fast Transient Engine, a low-latency transient detection pipeline for the Evryscopes.

By |November 7th, 2020|Categories: Uncategorized||0 Comments

Evryscope and TESS measure the temperatures of dozens of superflares

Ultraviolet light from giant stellar flares can destroy a planet’s habitability. New research from the Evryscope will help astrobiologists understand how much radiation planets experience during superflares and whether life could exist on worlds beyond our solar system.

Super flares are bursts of energy that are 10 to 1,000 times larger than the biggest flares from the Earth’s sun. These flares can bathe a planet in an amount of ultraviolet light huge enough to doom the chances of life surviving there.

We  have for the first time measured the temperature of a large sample of super flares from stars, and the flares’ likely ultraviolet emissions. Our findings, published on arxiv Oct. 5 ahead of print in Astrophysical Journal, will allow researchers to put limits on the habitability of planets that are targets of upcoming planet-finding missions.

See the great popular-press writeups at Space.com and Universe Today (among others).

By |October 7th, 2020|Categories: Uncategorized||0 Comments

Five new Evryscope Papers

The Evryscope Team and collaborators have published new papers based on Evryscope data:

EVR-CB-004: An Inflated Hot Subdwarf O Star + Unseen WD Companion in a Compact Binary Discovered with the Evryscope

Evryscope and K2 Constraints on TRAPPIST-1 Superflare Occurrence and Planetary Habitability

Evryscope-South Survey of Upper- and Pre-main Sequence Solar Neighborhood Stars

Multiwavelength Photometry and Progenitor Analysis of the Nova V906 Car

EvryFlare. II. Rotation Periods of the Cool Flare Stars in TESS across Half the Southern Sky

By |August 20th, 2020|Categories: Uncategorized||0 Comments

AAS-Nova and Astrobites cover EvryFlare, the Evryscope/TESS M-dwarf Flare Survey

AAS-Nova has a great article on Ward Howard’s EvryFlare survey. His survey combines long-term high-cadence Evryscope observations with short-term, high-precision TESS data to measure extreme flare rates and rotation rates for cool stars, including some of the highest-priority TESS planet-search targets.


By |January 29th, 2020|Categories: Uncategorized||0 Comments

Jeff Ratzloff wins UNC’s Dean’s Distinguished Dissertation Award

We are excited to announce that Jeff Ratzloff, the Evryscope mechanical designer and leader of our compact-objects and fast-transiting-exoplanets programs, has been selected to receive the 2020 Dean’s Distinguished Dissertation Award in the area of Mathematics, Physical Sciences & Engineering. The Dean’s Distinguished Dissertation Award recognizes the highest level of graduate student scholarship at UNC Chapel Hill; there is one award in physical sciences and mathematics each year.

By |January 22nd, 2020|Categories: Uncategorized||0 Comments

Evryscope @ AAS 2020

The Evryscope team are presenting new surveys and results @ AAS 2020:

Hank Corbett talking about his fast transient survey, including EFTE, his minute-cadence all-sky transient detection and followup system Surveys and Large Programs I, Jan 5, 2:00pm-2:10pm
Measurement of the Bright and Fast Transient Foreground with the Evryscope Fast Transient Engine
H. Corbett, N. Law, R. Gonzalez, A. Vasquez Soto, J. Ratzloff, W. Howard, A. Glazier, N. Galliher
Amy Glazier, eclipse timing variations survey. Ask her too about her recent paper on superflares from TRAPPIST-1! 170.19. Evryscope Searches for Circumbinary Planets, January 5, 5:30 pm – 6:30 pm.
Alan Vasquez, searching for solar-system moving objects with Evryscope 278.02, A New Near Earth Object Survey using the Evryscopes, Jan. 6 5:30-6:30.
Nathan Galliher, young star variability with Evryscope 110.22. Evryscope-South Survey of Young Upper-main and Pre-main Sequence Solar Neighborhood Stars, January 5, 9:00 am – 10:00 am
By |January 5th, 2020|Categories: Uncategorized||0 Comments

New papers exploring hot-subdwarf planets and common-envelope evolution

Two new papers from the Evryscope team detail the results of the Evryscope hot subdwarf binary and planet transit surveys:

Hot Subdwarf All Southern Sky Fast Transit Survey with the Evryscope (AJ 2020, in press)
Ratzloff, Jeffrey K.; Barlow, Brad N.; Nemeth, Peter; Corbett, Henry T.; Walser, Stephen; Galliher, Nathan W.; Glazier, Amy; Howard, Ward S.; Law, Nicholas M.

EVR-CB-001: An Evolving, Progenitor, White Dwarf Compact Binary Discovered with the Evryscope (ApJ 2019, 883 51R)
Ratzloff, Jeffrey K.; Barlow, Brad N.; Kupfer, Thomas; Corcoran, Kyle A.; Geier, Stephan; Bauer, Evan; Corbett, Henry T.; Howard, Ward S.; Glazier, Amy; Law, Nicholas M.

Several more results from this survey, which has found dozens of multiple-star systems in this mysterious phase of stellar evolution, are under review.

By |December 1st, 2019|Categories: Uncategorized||0 Comments

Rotation and flares in Evryscope-detected active cool dwarfs

EvryFlare II: Rotation Periods and Starspot Coverage of Cool Active Stars Throughout the Spin-down Process (AJ, submitted)

Ward S. Howard, Hank Corbett, Nicholas M. Law, Jeffrey K. Ratzloff, Amy Glazier, Octavi Fors, Daniel del Ser, Joshua Haislip


By |August 9th, 2019|Categories: Uncategorized||0 Comments

Three new Evryscope papers!

EvryFlare I: Long-term Evryscope Monitoring of Flares from the Cool Stars Across Half the Southern Sky (submitted to AJ)
Howard, Ward S.; Corbett, Hank; Law, Nicholas M.; Ratzloff, Jeffrey K.; Glazier, Amy L.; Fors, Octavi; del Ser, Daniel; Haislip, Joshua

Variables in the Southern Polar Region Evryscope 2016 Dataset (accepted to PASP)
Ratzloff, Jeffrey K.; Corbett, Henry T.; Law, Nicholas M.; Barlow, Brad N.; Glazier, Amy; Howard, Ward S.; Fors, Octavi; del Ser, Daniel; Trifonov, Trifon 

Building the Evryscope: Hardware Design and Performance (accepted to PASP)
Jeffrey K. Ratzloff, Nicholas M. Law, Octavi Fors, Henry T. Corbett, Ward S. Howard, Daniel del Ser, Joshua Haislip

By |May 11th, 2019|Categories: Uncategorized||0 Comments

Evryscope @ AAS Winter 2019

The Evryscope team and collaborators are presenting talks and posters about Evryscope science results and papers at the AAS winter meeting:

Overview project-status and science-result iPoster, viewable every day in the poster sessions (official session is Wednesday evening), and online.

10am Tuesday (Terrestrial Planets and Habitability; 203.01):

Evryscope flares as probes of the space weather environments of Proxima b and the nearest rocky exoplanets (Ward Howard)

Tuesday posters (Extrasolar Planets: Characterization & Theory; 247.05):

Evryscope and K2 Constraints on TRAPPIST-1 Superflare Occurrence and Planetary Habitability
(Amy Glazier)

Wednesday posters (Surveys and Large Programs; 363.11):

All-sky rapid transient searches with the Evryscope network (Hank Corbett)

Wednesday posters (Variable Stars; 360.16):

Evryscope Observations of Post-Common-Envelope Hot Subdwarf Systems (Kyle Corcoran)

2pm Thursday (Extrasolar Planets: Detection – Transit and Microlensing Searches):

Fast Cadence Planet-searches with the All-sky, Gigapixel-scale Evryscope (Jeffrey Ratzloff)

Thursday posters (Stars In All Their Glory; 464.03):

Evryscope Photometry of the New Hot Subdwarf Reflection Effect Binary EC 01578-1743 (Stephen Walser)

By |January 7th, 2019|Categories: Uncategorized||0 Comments

Northern Evryscope deployed!

We’ve completed a successful deployment of the Northern Evryscope. The system is currently undergoing commissioning.

By |October 27th, 2018|Categories: Uncategorized||Comments Off on Northern Evryscope deployed!

New Evryscope paper: long-term K2 target chacterization

Evryscope measured the rotation period of K2-3, a planet-host with too long a rotation period to be measured directly in K2 (or eventually TESS) data. We’re happy to provide data for astronomers interested in similar measurements of other targets.

By |October 7th, 2018|Categories: Uncategorized||0 Comments

New Evyscope paper: characterizing a young quadruple system

Evryscope helped characterize a young, eccentric and quadruple stellar system, detecting starspot rotational modulation (a clear detection at the 4mmag level!)


By |September 7th, 2018|Categories: Uncategorized||0 Comments