EOSS-228 and 229 Equipment Qualification Flights

This will be an exempt flight of two 1200g balloons to test and flight qualify new beacons.  Updated 9/26/16 2200: Qual Payload Frequencies updated.  Payload plans updated to Rev A.

The predictions from Randy can be found here:  http://ruc.noaa.gov/sdb/predict_0.htm . 

Edge of Space Sciences Membership Form!!!


Please go to EOSS Membership Form link or complete the membership form below.  We are working on getting the Paypal account back up and will soon have a link to it for your dues.  Remember Dues are $20.00 this year for Adults and $10.00 for students.


Pay your dues at paypal@eoss.org


EOSS-227 Eclipse Practice Flight Recap

EOSS-227 reached an altitude of 65,435ft and was recovered north of Torrington, Wyoming, between highway 159 and the Nebraska border at  N 42° 13.614”, W 104° 08.662”. EOSS would like to thank the WY Air National Guard for the use of Camp Guernsey facilities, and the amateur radio operators in Southeast Wyoming for their support, in particular WA7SNU for the use of the Wheatland repe

EOSS-222/223/224 Recap - Metro State University and STEM flights

EOSS 222/223/224 were launched from the Limon launch site at approximately 0830 on May 21st.   EOSS-224 was found after 59 days hidden in a wheat field. See the galleries below for additional information.  

EOSS-222 landing site was at 39.65567 N, 103.03233 W

EOSS-226 Colorado Space Grant Demosat Flight - Recap

Douglas County STEM School and Acadamy has created a great 6-minute video, located at https://www.youtube.com/watch?v=tr-glqCw7Z0

The FAA Waiver or Authorization

EOSS often flies payloads that require a Certificate of Waiver or Authorization from the Federal Aviation Administration to remain in compliance with the rules and regulations of the FAA.

Why Read the Waiver?

The FAA issues this waiver expecting EOSS to comply with the specifications outlined by this document. All individuals involved in flight operations are expected to be aware of the provisions of the waiver and this is EXPLICITLY stated in paragraph six (6) of the "Special Provisions" section of the waiver on page two of the document.

EOSS-225 - Great Plains Superlaunch Recap

EOSS attended the Great Plains Superlaunch, presented 3 papers on amateur radio balloon topics, and participated in the simultaneous launch of 10 balloons from Granbury, Texas

Colorado Space Grant 3fer EOSS-219-220-221 Recap

Go here to submit your request mileage reimbursement.  Only EOSS members may submit.   


Due to difficulties with the primary repeater, the pre-flight net was held on the 146.94  repeater.  See details on tone at the bottom of the page.

Update 4/8/16 1620 :  Payload plans updated with final manifest and weight.

Update 4/6/16:  Grid Locations, Breakfast Info, Tracker List

EOSS-217 NOAA Water Vapor Experiment Recap

EOSS 217 was launched successfully from the Wiggins Rest Stop launch site at approximately 0415 MT.  The NOAA payload was recovered in Nebraska just east of the Enders State Recreational Area, near Imperial, Nebraska.


EOSS Mileage request

EOSS-218 CU Boulder & STEM School Flight

An Additional Link and Pictures Posted Today (2/27/2016)


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