Science Meeting 1/27/25

The first Science Meeting of the year included two interesting topics:

“Cascade Noise Figures” by Ray Uberecken

“System 1 Tracking Modifications” by Lewis Putnam, Glenn Davis and Phil Gage

The video presentation can be found on the DSES YouTube Channel here.

Las Animas High School Visit

Doug Leber provided the following report on the recent Las Animas High School Visit to the DSES site:

The Deep Space Exploration Society (DSES) hosted its first high school field trip on Wednesday, January 22, 2025, when seventeen Las Animas High School students and three staff members toured the Plishner Radio Astronomy and Space Sciences Center outside Haswell, CO.  About half the students will participate in this year’s Colorado Science Olympiad competition. Jennifer Pointon, Science Olympiad coach, and Las Animas High School counselor, said she wanted students to see the Plishner facilities and learn how DSES can provide opportunities for research and mentorship in astronomy, radio, electronics, and engineering. Joshua Japhet (Las Animas HS Dean of Students and Science teacher) and Cody Hines (Las Animas HS Instructional Coach) also helped make this visit successful.

Bill Miller, DSES Vice President, gave an overview of the organization’s history and the years of effort required to revive the 60-foot-diameter radio telescope at the Haswell site. He introduced radio astronomy and some of the studies DSES members have conducted since restoring the telescope, including detecting pulsars and masers, observing solar and planetary radio emissions, and mapping the hydrogen line to show which galaxies are moving toward or away from Earth.

DSES Board member Ray Uberecken and DSES member Roger Oakey showed students how we control the dish to track and focus on deep space objects as Earth revolves. Mr. Japhet said students enjoyed watching how the huge dish moved.  Mr. Uberecken also showed different ways radio frequency signals are represented, using an oscilloscope to show a signal’s waveform in real-time (the frequency and shape of an electrical signal) and the same signal in a waterfall display, which shows its intensity and relationship to other signals nearby on the radio spectrum.

Students then braved the intense winds and cold to venture to the bunker location of the DSES amateur radio station, where Board member Paul Sobon demonstrated how long-distance contacts are made using high-frequency (HF) transceivers. Under his supervision, several students learned to call ‘CQ,’ the amateur radio shorthand for “I’m here and ready to take your call!” Unfortunately, because band conditions were poor, no student got a response. Later, Paul Sobon reached a radio amateur in the Canary Islands, and students observed two-way HF radio communication between stations over 5,000 miles apart.

Since 2009, society members have devoted hundreds of hours to rebuilding the Plishner site. In 2023, a grant from Amateur Radio Digital Communications (ARDC) provided funds to complete a new building suitable for hosting groups.

DSES President Myron Babcock noted that this field trip visit to the Plishner Radio Astronomy and Space Sciences Center reflected the dreams of Michael Lowe, former Board DSES Board President, who sought to create a center for radio astronomy and space science education in Southeast Colorado. Over the next year, DSES hopes to host more school trips to the Plishner Center and work with area middle- and high-school students to advance their studies in science and radio.

 If you are a parent, teacher, or school representative interested in learning more about DSES and how the society can support your students, please contact Doug Leber, the DSES education outreach coordinator.

Open House 2024 Report

Bill Miller, DSES VP, has written a great report on the DSES Open House that was held on October 5, 2024. It was a very successful event with over 100 attendees enjoying the new building and other activities.

Click here for the report: 2024 Open House.

There is also a video provided by Mike K0FYR: 2024 Open House

Save the 30 foot Dish Update

The 30 Foot Dish and Pedestal have been safely removed from Ignacio, CO.

Read the progress reports here: 30 Foot Dish Progress Report and Unloading the Dish. Thanks to Elaine K0ARR for the excellent writeup and photos.

Paul NO0T took this video of the dish being removed from the Pedestal: Dish Removal

For more information about the project, and to make a donation read this post: Save the 30 Foot Dish Project

Next, the Dish and Pedestal components will be unloaded at the DSES Haswell, CO site. Plans are to install the Dish in the Spring of 2025.

Save the 30 foot Dish Project

The Deep Space Exploration Society (DSES), a 501 C(3) non-profit (K0PRT) is working to save a 30-foot EME dish which was built and used by Bruce K0YW who passed away last year. The 30-foot Kennedy EME dish is located in a remote area of SW Colorado near Ignacio and is scheduled to be torn down for metal scrap this July so that the property can be sold by Bruce’s XYL.

DSES is trying to raise donations to help pay for a crane and then transport the antenna 330 miles to their location near Haswell Colorado in SE Colorado and reinstall the dish. All donations received will help fund this dish removal, which includes crane rental, transportation, lodging and any associated cost in the reassembly process and re-mounting this dish back on the 25-foot tower secured to a large concrete foundation at the DSES Plishner Site in Southeast Colorado.

No amount is too small and DSES really appreciates your support. The plan is to rebuild and reinstall the dish late this year or early in 2025.

Click here to donate

New DSES Building Update

An update on the progress of our DSES building project. Our DSES Vice President and Project Manager, Bill Miller, has spent many hours and has made many trips down to the Plishner Site near Haswell Colorado to make this project happen.  After many delays, some due to COVID, in finding contractors for concrete, plumbing, and electrical as well as building manufacturers to provide a 60-foot by 30-foot structure, DSES has finally made some progress.  We still have many hours of interior/exterior work and antenna towers to place before we can move our current operations from the existing communications trailer and the underground bunker.  This future work will still require many trips and hours on site to complete these tasks.  We hope our local Colorado DSES members will be able to provide some help in completing these projects.  DSES will provide dates and times of these trips so members can plan their time at the Plishner Site.  A big thank you to Bill Miller for taking on this project and to those other members who were able to assist him over the past few months. 

Myron Babcock

President/Treasurer

DSES

Changing the antenna feed for Moon Bounce

Photos courtesy of Glenn Davis. Text by Bill Miller.

On Friday afternoon October 14, 2022, we prepared the 60-foot dish antenna for the weekend’s Moonbounce communications operations in the ARRL EME contest.

Glen Davis updated the tracking software, checked the callibration of the mount and helped as ground crew and photographer. Meanwhile Ray Uberecken and Bill Miller climbed the scaffold and changed the feed from the 437 Mhz antenna to the 1296Mhz antenna.  They also installed Ray’s 180 watt amplifier at the antenna feed point and checked the system reception from Ray’s Calhan residence beacon.

Measurement check of the dish antenna

On Sunday October 2, 2022 Ray Uberecken, Dan Layne and Gary Agranat climbed on to the 60-foot dish antenna to measure the dish diameter, the distance from the dish center to the feed, and the bore alignment. This verified the original geometry specifications continue to be valid to at least within a quarter of an inch.

The original plan for the day was to also install the 1296 MHz feed at the focus, for the upcoming ARRL EME contest. However, the wind gusts increased, as was anticipated from the forecast. The feed changeout was therefore postponed.

Measuring the first leg of the distance from the dish center to height of the edge, using the tape measure suspended from the dish edges.
Ray securing the tape measure to measure the dish diameter.
Dan measuring the dish diameter at the opposite edge.
Antenna focus
Securing the ladder
Scattered rain shafts started to pass during the afternoon.

Photos by Gary Agranat