DFM Engineering, Inc.
1035 Delaware Ave. Unit D
Longmont, CO 80501
Phone: 303-678-8143
Fax: 303-772-9411

Late Breaking News

2006 - 2008
2004 - 2005
2002 - 2003
2000 - 2001


Observatory Shelter designed and fabricated by DFM Engineering to house a 1.3m F/4 DFM Telescope. The site is at San Pedro Martír, Baja California, Mexico.

Download a pdf of the most recent image of the Site Construction Status: TAOS II Observatory Shelter Site #1!

TAOS II Observatory Shelter Site#1 satus as of 09/06/2016.

View "The Sun Watchers" video produced by Astronomy Outreach Network including an indepth look at the 1.6m New Solar Telescope designed and built by DFM!

See breathtaking images of the Sun and learn about the 1.6m NST at BBSO. It is the largest telescope of its kind in the world and making phenomenal solar discoveries possible in the science of astronomy.

Discover the critical elements of the NST that seemingly floats on a spring suspension balancing mechanism. And learn the details of a unique thermal control system, a closed-cycle, chilled-air system and its importance in providing unprecedented, high-resolution image quality.

BBSO 1.6m New Solar Telescope and "The Sun Watchers" Video

DFM Engineering, Inc. is pleased to be a sponsor of the 227th meeting of the American Astronomical Society!

The 227th AAS meeting will be held January 4-8, 2016 at the Gaylord Palms Resort & Convention Center, 6000 West Osceola Parkway in Kissimmee, Florida.

The meeting will feature over 16 accredited speakers, multiple workshops in teaching, science presentation, team-building and astronomical data analysis, software, and research projects among other special sessions.

Dr. Frank Melsheimer and Mr. Mark S. Kelley will be attending the DFM Engineering booth. DFM will feature prime focus conversions to re-purpose old "dinosaur telescopes" with a corrected prime focus wide field instrument and show a revolutionary dual imaging instrument application designed specifically to look for asteroids.

Please come visit DFM at Booth #208 and see the new "Dino-App™"!

DFM Installs a 1.3m Double Horseshoe Mount Telescope for NASA MCAT on Ascension Island!

Ascension Island (located in the mid Atlantic) is now home to the NASA and the US Air Force Research Laboratory (AFRL ) that features a new 1.3m Meter Class Autonomous Telescope (MCAT).

The fast tracking telescope follows debris targets in any direction across the sky. It eliminates both the blind-spot at the zenith that is so typical of astronomical telescopes as well as the need to flip the telescope when it crosses the meridian. It will enable NASA to deepen the understanding of the debris environment around Earth.

The MCAT is a unique telescope, one of only two like it in the world - a 20,000 lb., double horseshoe mount telescope, designed by DFM Engineering.

1.3m NASA MCAT Telescope Installation

DFM Installs a 24" Telescope Liberty University!

The Astronomical Observatory at Liberty University in Lynchburg, Virginia, now features a new 24" DFM Ritchey-Chrétien (RC) telescope with a TCSGalil™.

According to Dr. Roger Schultz, Dean of the College of Arts & Sciences at Liberty, the 24" telescope will be the largest in the region.

Liberty University 24" Telescope Installation

The ATLAS (Asteroid Terrestrial-impact Last Alert System) Optical Tube Assembly enters a final testing phase at DFM Engineering.

Dr. John Tonry and Dr. Frank Melsheimer put the ATLAS and its custom 110 megapixel CCD camera through a final testing procedure at DFM Engineering Headquarters. The instrument features are described in detail with First Light images.

ATLAS Asteroid Tracker Testing and First Light Images

Emory University stimulates interest in Astronomy with DFM 24" Telescope and TCSGalil™ Upgrade

Located within the silver dome atop Emory University's new Mathematics and Science Center, the 24" Cassegrain telescope is the centerpiece of the physics department's new astronomy program and one of the major attractions on campus.

This modern DFM 24" Telescope is computer controlled by a recently installed telescope control system (TCS) called TCSGalil™. The telescope's 24" mirror affords it the "light gathering" ability to see deeply into the universe and the new TCSGalil™ provides ease of use and numerous practical benefits.

Emory scientists are using the new telescope and the data collected in astronomy, photometric measurements and spectroscopy.

Emory University's TCSGalil™ Upgrade

See Emory University's testimonial and description of the 24" telescope in action!

DFM contributes to the Asteroid Terrestrial - impact Last Alert System (ATLAS) at the Research Corporation of the University of Hawaii (RCUH).

RCUH and the Institute for Astronomy (IfA) at the University of Hawaii have developed a project called the ATLAS. It is designed to compliment the Pan-STARRS project for locating Earth bound asteroids and comets.

ATLAS will be a vital alert system for incoming planetary disasters, namely, asteroids. Astronomers expect the ATLAS system to be fully operational by the end of 2015.

ATLAS System - quick alert project

DFM Installs 1-m Telescope at Embry-Riddle Aeronautical University

The DFM 1-m Ritchey-Chrétien (RC) Cassegrain telescope, was installed in February 2014 on top of the new 140,000 sq. ft. College of Arts and Sciences building.

The observatory sits atop the new College of Arts & Sciences building at ERAU and creates a dramatic new skyline. The new DFM telescope launches an extensive new astronomy degree program at ERAU.

ERAU Install details

NJIT BBSO revels in Awesome Sunspot Close-Ups!

The 1.6m New Solar Telescope (NST) designed and manufactured by DFM Engineering and installed at the Big Bear Solar Observatory (BBSO) is the most powerful ground-based solar telescope in the world.

Recent research and striking images have exposed new information about the events on the sun. Sunspots, granules and three-ribbon solar flares are just a few areas of study made possible by the NST.

See the breathtaking video of action on the sun by Nola Tayolr Redd of Space.com.

NJIT BBSO revels in Awesome Sunspot Close-Ups!

DFM attends the 224th AAS meeting!!

DFM Engineering, Inc. is pleased to attend the 224th meeting of the American Astronomical Society. The meeting will be held June 1-5, 2014 at the Westin Copley Place Hotel, 10 Huntington Avenue in Boston, Massachusetts.

The 224th meeting will highlight multiple accredited speakers, a solar physics division session and a laboratory astrophysics division session among other special sessions.

Mr. Mark S. Kelley will be attending our booth.

Please come visit us at Booth #103.

Enjoy the Total Eclipse of the Moon!

At 2 o'clock in the morning (EDT) on April 15th, you can be treated to this spectacular lunar eclipse. It will be visible from all of North America, and seen well up into the western sky.

However, at Pisgah Astronomical Research Institute (PARI), Dr. David Clavier is offering a special link to the event by opening viewing access up to the public.

For a brief explanation of the beauty of a lunar eclipse, see the following article.

Total Lunar Eclipse on April 15th

University of Western Australia Celebrates 1m Telescope Installation Anniversary!

The University of Western Australia at the Gingin Observatory is celebrating the two year anniversary of the DFM Engineering 1m telescope installation.

The telescope was named after Jim Zadko, who made a generous donation toward its acquisition and the telescope is now affectionately known as the "Zadko".

It remains the largest telescope available for professional astronomical research and public access in the Southern Hemisphere. Exciting observations and discoveries are being celebrated and credited to its fast tracking and quality light gathering capabilities.

1m DFM Telescope Installation Anniversary at the University of Western Australia

1.3m DFM Telescope was installed at the Indian Institute of Astrophysics

DFM Engineering recently installed a 1.3m F/8 Double Horseshoe telescope at the Vainu Bappu Observatory (VBO) at the historical Indian Institute of Astrophysics (IIA) near Bangalore, India.

The installation required extensive planning and design by DFM as documented in the following article.

Exciting observations such as the Comet ISON are already being captured by the staff at the IIA.

1.3m DFM Telescope Installation at the IIA

Austin College's IDEA Center features a DFM Engineering 24" Telescope!

A new 24" DFM Engineering telescope was installed in the Adams Observatory at Austin College's IDEA Center.

Installation took place on a beautiful, clear day in Sherman, Texas at Austin College in early August.

The new IDEA Center and Adams Observatory is handicapped accessible and will provide students, faculty and the public with state-of-the-art research facilities.

Austin College 24" Telescope Installation

DFM Engineering is Going Strong!
We are thankful to have been largely unaffected by the September 2013 flooding in Colorado.

DFM Engineering suffered no damage during the flooding. We are pleased to report that all our telescope manufacturing departments are in full operation.

We are committed to offering the same high quality products and service as always.

Our thoughts and prayers go out to our fellow Coloradans who were not so fortunate.

To help flood recovery efforts in Colorado, go to: www.HelpColoradoNow.org

Embry-Riddle Aeronautical University awards DFM with 40" Telescope order!

Embry-Riddle Aeronautical University has comissioned DFM Engineering to manufacture a 40" telescope and consult with observatory design and planning.

The telescope and observatory will be the centerpiece of a 140,000 sq. ft. College of Arts and Sciences building currently under construction.

Embry-Riddle Aeronautical University's College of Arts and Sciences

1.6M Perkin Elmer Telescope at the Mt. Megantic Observatory has maintenance completed!

The University of Montreal has comissioned DFM Engineering to, once again, perform a thorough maintenance check on the 1.6M Perkin Elmer telescope.

In addition to the routine cleaning, lubricating and maintenance checks, DFM also replaced the computer in the Telescope Control System and upgraded the software.

The 1.6M Perkin Elmer telescope, with its sturdy mechanical structure and extraordinary optics will provide observing efficiency and performance for many more years to come.

University of Montreal Maintenance and Upgrade

The New Austin College IDEA Center will feature a 24" DFM Engineering telescope!

Production of the new 24" telescope is currently underway at DFM Engineering. The IDEA Center at Austin College in Sherman, Texas is also under construction with plans to open in the fall of 2013.

The IDEA Center Observatory with the new 24" DFM research telescope will be a highlight of the new facility at Austin College.

IDEA Center Observatory at Austin College

Mr. Don Groff, Mechanical Engineer
Celebrates 30 Years of Service at DFM Engineering

Mr. Don Groff, Mechanical Engineer of Longmont based DFM Engineering, Inc., celebrated his 30th Anniversary on October 25th, 2012.

Don Groff works closely with the engineering and production staff to create detailed drawings and assembly packages for each telescope and instrument manufactured at DFM Engineering.

Mr. Groff is instrumental in the success of the company and is very much appreciated!

Don Groff Celebrates a 30 Year Anniversary with DFM Engineering!

Dr. Frank Melsheimer of DFM Engineering presents an investigation of Satellite Tracking Telescopes!

Dr. Melsheimer addresses the particular demands placed upon a telescope as it tracks artificial satellites.

Multiple white papers are referenced in his study as he investigates the configuration, mechanical and servo drive considerations of the satellite tracking telescope.

In this analysis, Dr. Melsheimer provides an explanation of the three types of mount configurations; Alt-Az, Alt-Alt, and the Equatorial mount and identifies significant features.

He addresses the mechanical considerations of the optical tube assembly mount position, drive stiffness and structural stiffness as well as the servo drive system.

Satellite Tracking Telescopes by Dr. Frank Melsheimer

DFM presents a thorough analysis of telescope optics!

Dr. Frank Melsheimer addresses customer requested telescope optics specifications. He provides an explanation of perfect optics, telescope operating wavelengths and off axis images.

Additionally, he discusses the off axis image quality improvement using the DFM Engineering field corrector design and fabrication in his paper, "Telescope Optics Discussion".

Dr. Melsheimer includes an examination of various field corrector designs, challenges and required tools for fabrication.

Telescope Optics Discussion by Dr. Frank Melsheimer

Mystery of the Brown Mountain Lights shines in the Denver Post!

On Saturday, February 11, 2012 at the Morganton City Hall in North Carolina, Ed Phillips of the Burke County Tourism Development Authority presented the world's two most sought after speakers on the Mystery of the Brown Mountain Lights! Joshua P. Warren, Paranormal Investigator and Applachian State University Physicist and Astronomer, Dr. Dan Caton both shared their theories on the origins of the mysterious lights to a sell-out crowd.

The news of the mysterious lights and the symposium interest captured the attention of the Denver Post easily 6 states to the west in Colorado.

The Brown Mountain Lights Mystery

Memorial University Grenfell Campus features a DFM Engineering 24" Telescope!

A new 24" DFM Engineering telescope was installed at the Grenfell Campus of Memorial University.

Installation took place in the late afternoon and evening hours before an approaching storm.

The new observatory and telescope will provide handicapped accessibility for the public and with research support from NSERC (NSF equivalent) the telescope will be used for research on half-light diameters of open clusters. The Grenfell Campus will also explore collaborative projects with students from Saint Mary's University in Halifax, which has a full-blown astronomy graduate program.

DFM installs a 24" Telescope for Memorial University Grenfell Campus.

ARIES 1.3 meter optical telescope installed in Devasthal, India!

The DFM Engineering team completes a successful installation at the Aryabhatta Research Institute of Observational Sciences (ARIES).

Installation took place in the remote Central Himalayan region of Northern India.

The pristine location enables thorough study of variable stars, supernova events and star formation in the Milky Way and other galaxies in the universe.

DFM installs a 1.3 meter Optical Telescope for ARIES.

University of Victoria features Canada's largest 'on-campus' Telescope
DFM Engineering installs a 32"!

The DFM Engineering team completes a successful installation at the University of Victoria in British Columbia, Canada.

The University's preparations and new science building made for a smooth install.

DFM installs a 32"Telescope at the University of Victoria

Mr. Mark Kelley, Vice President Engineering
Celebrating 30 Years of Service at DFM Engineering

Mr. Mark Kelley, Vice President of Engineering of Longmont based DFM Engineering, Inc., celebrates his 30th Anniversary on January 1, 2012.

Mark Kelley is responsible for designing telescope control system software.

He works closely with customers in determining control room specifications, computer requirements and implementation and installation of DFM's Telescope Control System.

His many years of service and expertise are greatly appreciated by DFM Staff and the DFM customers!

Mark Kelley Celebrates a 30 Year Anniversary with DFM Engineering!

DFM Engineering's research grade telescopes have been used to track the asteroid YU55.

In the MSNBC video, Brian Williams reports on the research activities at the Clay Center Observatory. Ron Dantowitz, Brookline MA, uses a 24-inch DFM research telescope to track and study the asteroid.

MSNBC's video clip of DFM's CCT-24 tracking the Asteroid YU55!

DFM Engineering's research grade telescopes have been used to track the asteroid YU55 as it moves through the sky referenced to the stars.

View images, used with permission of Dr. William Keel, University of Alabama showing 60 second exposures tracking the asteroid.

DFM's CCT-16 tracks the Asteroid YU55!

DFM Engineering has been awarded the contract for the design, manufacture and installation of NASA's Meter-Class Autonomous Telescope (MCAT) system.

Research, imaging and characterization of space debris will be the cornerstone of space surveillance by NASA and the Air Force Reserch Laboratory, a core technical capability required to support US national interests in space.

DFM Engineering creates the 1.3M MCAT System!

Mr. Ian Huss, Production Manager
Celebrating 30 Years of Service at DFM Engineering

Mr. Ian Huss, production manager of Longmont based DFM Engineering, Inc., celebrates his 30th Anniversary on March 16th, 2011.

Mr. Ian Huss is highly trained and qualified as the Production Manager for DFM Engineering. His many years of service and expertise are greatly appreciated by DFM Staff and the DFM customers!

Ian Huss Celebrates a 30 Year Anniversary with DFM Engineering!

DFM Engineering co-sponsors the Telescopes From Afar Conference.

DFM is proud to announce its co-sponsorship of the international conference, “Telescopes from Afar” being held February 28 - March 3, 2011 at Waikoloa Beach Marriott, Hawai’i.

The conference will focus on remotely operated, automated and robotic ground based telescopes including economics, scheduling, networking, instrumentation and other related topics.

The goal is to provide an opportunity to share information on the advancements and developments in the areas of remote observing, remote operation and automated local and global networking of all sizes of observatories.

The conference offers a unique perspective on retrofitting existing observatories for remote and autonomous operations.

Telescopes From Afar Conference