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EOSS-257, 258, & 259 CU Science Discovery & Metro State Univ - Recap
CU Science Discovery video, "Young engineers aim for the stratosphere at Science Discovery Camp" is posted!
Here is a link to a CU Science Discovery page with experiment data, drone footage, and launch videos!
All three flights were very successful.
- EOSS-257 launched at 8:30am reached an altitude of 95,019 feet, and landed at 39.420718, -103.55227 (12 miles to the north)
- EOSS-258 launched at 8:43am, reached an altitude of 95,950 feet, and landed at 39.41011, -103.64215 (12 miles to the north)
- EOSS-259 launched at 9:42am, reached an altitude of 95,240 feet, and landed at 39.410823, -103.63551 (12 miles to the north)
Recap Gallery:
Original Announcement:
LAUNCH SITE IS Limon Colorado. Please have your payloads at the launch site 1.5 hours prior to launch for weigh-in. The current prediction is for a short flight to the north.
Please keep watching this website for updates. Predictions are now updating daily (about 1pm). Click on the link below (or here) to view the prediction information.
Payload plans have been updated as we learn better payload mass estimates..
The collection of links shown at this page gives you prediction, weather observations, and tracking links for the flights on 7/29.
- Two Exempt balloons supporting two one-week CU Science Discovery workshops.
- One Exempt balloon to refly the Metro State University Sunkist and Deadeye experiments.
Predictions are located here.
Event Date:
Saturday, July 29, 2017 - 00:00
Flight Coordinator:
Jim KCØRPS
Launch Site:
Grid:
Punkin Center, X 80, Y 20, Test N 39.0000, W 104.0000 X 64.0 Y 30.2
Flights:
EOSS-257
Exempt balloon with two CU Science Discovery payloads and a CU Grad Student 360 degree video payload
Balloon Type:
1500g Totex latex balloon
Parachute:
9 foot Rocketman High Altitude Balloon Payload Recovery Parachute
Beacons:
| Frequency | Callsign | Type | Notes |
|---|---|---|---|
| 144.340 MHz | AEØSS-7 | APRS | Primary Beacon, Timeslotted at 0:00 and 0:30 |
| 144.950 MHz | KEØBMV-11 | APRS / DF | Secondary Beacon |
| 145.750 MHz | KCØD-15 | APRS / DF / Cutter | qualificaiton |
| Iridium Tracker |
Payload Plan:
EOSS-258
Exempt Balloon with CU Science Discovery payloads and the CU Science Discovery GoPro payload
Balloon Type:
1500g Totex latex balloon
Parachute:
5.8 ft orange and white nylon parachute with spreader ring
Beacons:
| Frequency | Callsign | Type | Notes |
|---|---|---|---|
| 144.340 MHz | AEØSS-12 | APRS | Primary Beacon, Timeslotted at 0:10 and 0:40 |
| 147.555 MHz | KCØD-14 | APRS / DF / Cutter | Secondary Beacon |
| 144.360 MHz | KCØD-11 | APRS | qualification |
Payload Plan:
EOSS-259
Exempt balloon reflying two Metropolitan State University payloads
Balloon Type:
2000g Totex latex balloon
Parachute:
8.5 ft circumference Sphereachute with cutter and fast release
Beacons:
| Frequency | Callsign | Type | Notes |
|---|---|---|---|
| 144.340 MHz | AEØSS-13 | APRS / Digi (EOSS) | Primary Beacon, Timeslotted at 0:20 and 0:50 |
| 145.570 MHz | KCØD-12 | APRS / DF / Cutter | Secondary Beacon |
Payload Plan:
FrequencyList:
Preflight Net:
- 147.225 MHz CRA Repeater (107.2 Hz Tone) 8 pm MDT preceding night
- 146.940 MHz (103.5 HZ Tone) RMRL Repeater if the CRA machine is down
- 146.640 MHz (100 Hz Tone) DRL will serve as a backup frequency
Recovery Operations:
- 448.450 MHz PPFMA (100.0 Hz Tone)
- 446.100 MHz Field Simplex, EOSS #257
- 446.150 MHz Field Simplex, EOSS #258
- 446.200 MHz Field Simplex, EOSS #259
- 446.275 MHz Student Travel Simplex
- 146.550 MHz Backup field simplex
Launch Site Simplex: 446.050 MHz
HF - Possible ops: 7.235 LSB
Tactical Calls:
| Tactical | Call Sign | Name | Notes | TrackPoint Xmit Time Slots |
|---|---|---|---|---|
| Alpha | WAØGEH, KCØD | Marty, Mark | EOSS #257/258, Alpha | 4 minutes @ 12 seconds |
| Bravo | KDØSEM | Dave | EOSS #257/259, Tracker | 4 minutes @ 17 seconds |
| Charlie | KCØRPS, WØNFW | Jim, George | EOSS #258 | 4 minutes @ 22 seconds |
| Delta | KØSCC, NØIX | Stephen, Doug | EOSS #259 | 4 minutes @ 27 seconds |
| Echo | KØLOB | Jim | EOSS #258 | 4 minutes @ 32 seconds |
| Foxtrot | NØNDM | Larry | EOSS #259 | 4 minutes @ 37 seconds |
| 4 minutes @ 37 seconds | ||||
| Hotel | N7JJY | George | Only if Windsor Launch | 4 minutes @ 47 seconds |
| Tango | KCØL | John | Texas Predictions | |
TR Breakfast:
Note the 8:30 launch times for these high school students...
Assuming a Limon launch, breakfast will be 7:15 at Denny's, leaving Denny's to track at 8:00. The grids and tests are the same as last flight. More later...