Wesleyan's Mark Evans Observatory Designated Official Site
Oct. 14, 2013
BLOOMINGTON, Ill.— Precise observations of asteroids by three Illinois Wesleyan University
physics majors have resulted in the designation of the University’s Mark Evans Observatory
as an official observing site. The three are: Kyle Connour ’15 and Chelsea Davitt
’14, both of Bloomington, and Daniel LaRocca of Palatine, Ill., a 2013 graduate of
Under the direction of Chair and Professor of Physics Linda French, the three also
installed a new telescope and charge-coupled device (CCD) camera at the observatory.
The new telescope and camera allowed the students to make calibrated, highly precise
observations to submit to the Minor Planet Center (MPC) at the Smithsonian Astrophysical
Observatory, under the auspices of the International Astronomical Union. The MPC is
the single worldwide location for identification, designation and orbit computation
of minor planets, comets and outer irregular natural satellites of the major planets.
“With this designation our data (from observations) will go into a large database
maintained by the Minor Planet Center that other scientists can use,” said French.
The University’s previous telescope was functional, but the new instrument and accompanying
electronic camera allow students to use coordinates to precisely position the telescope.
“With the new camera, we can take pictures of galaxies in 10 seconds that you cannot
see with the naked eye,” said French. “So we can actually show astronomy students
the objects they are learning about.”
Using the new telescope and camera took practice, according to the physics majors.
“We had a lot of fun looking at nebulas and other asteroids to make sure our tracking
system was accurate,” said Connour. By observing the same objects an hour apart over
several nights, the students gained experience in aligning the telescope, balancing
it and taking photos of planets, asteroids and other heavenly bodies.
Funding for the students’ work this summer was provided by a 2012 National Science
Foundation (NSF) grant entitled “RUI: Photometric Survey of Jovian Trojans.” The grant
also allowed Davitt to accompany French for an observing trip at the Cerro Tololo Interamerican Observatory in Chile. LaRocca was able to make
observations in Chile with French last year under the auspices of the same NSF grant.
“A key part of the grant is to expose undergraduate students to know what it is like
to do real research,” said French.
The Mark Evans Observatory shares the official observing site designation with such
renowned observatories as Cerro Tololo, the Lowell Observatory in Arizona and Mauna
Kea in Hawaii.
“What’s important about the designation is that we are right there next to the major
observatories of the world,” French said. “We may not have the number of staff and,
because of our other obligations, can’t work at quite the same rate they do. However,
faculty and students at undergraduate institutions are capable of doing work alongside
The Mark Evans Observatory is open to the public Sunday through Thursday from 9 to
11 p.m. Check the Observatory’s Facebook page or follow them on Twitter for the most accurate updates on viewing conditions. Both Connour and Davitt are
among the students who work at the Observatory to assist the public at the viewing