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Many have asked how this photo was made. This is my explanation.
The ISS rotates about its pitch axis as it orbits Earth at 17,000mph to keep its nadir view constant. Because of this long exposure photography turns stars into arced lines.
Sidereal clock drives on Earth match the planet's rotation to see stars clearly. I knew one designed for space could do this too.
So a camera mount was custom built at @RITtigers to rotate once every 90 minutes using a 60 to 90 toothed gear system, cancelling out the orbital motion of ISS and allowing the capture of distant stars as fixed points!
In essence, it is a a rotational coil spring powered analog star tracker. It was machined out of aluminum and is entirely mechanical to bypass NASA's strict electrical requirements for cargo. We had to get creative!
After Expedition 72 it was safely returned to Earth and is to be displayed at RIT. Which I am pleased to say because a similar barn door tracker I made from spare parts on Expedition 6 for nighttime city photography was destroyed in an atmospheric trash disposal!
Photography is an important part of sharing the journey to new frontiers for all people of Earth!
Have you made your way to the Appleton airport yet? T-minus 25 minutes to the parade! Come welcome our veterans home! #mission72 if you have any photos please make sure to add the hastag!
🚀#MISSION72 - Como ser humano de novo
👩🚀 Dayo
🪐 Classificação: Saturno
⚠️ Menção a sangue
https://t.co/F5GEclk39v
📻 #ARCHIVEPLAYLIST
🚀 #MISSION72 - Como ser humano de novo
👨🚀 Dayo
🎧 All the Small Things - Blink-182
New website is looking sick AF. Scrolling down to reveal the leaderboard and more fun games.
@NFArcade #rebelstakeover #mission72 @NFA | thezeke
It was a Father's Day tradition at the @ROCAirport as many people welcomed back Mission 72 Honor Flight as Veterans returned home from their trip to Washington DC to see the memorials. @SouthwestAir provided the flight. @13WHAM @FoxRochester #HonorFlight #Mission72 #ROC #Airport
Great #HonorFlightRochester Welcome Home for #Mission72 Thank you again Mark Pedersen for giving of your time to be our Key Note speaker. Excellent remarks! https://t.co/5gYzwLsWsi
Many thanks to @USNavy Captain (Retired) and US Federal Court Magistrate Judge Mark Pederson for being our keynote speaker today for #HonorFlightRochester #Mission72 #Veteran.
#HonorFlightRochester #Mission72 returning home to the @ROCAirport today at noon! Come out to Welcome these #Veterans Home!!
#honorflightrochester mission 72
Let’s go!!
#HonorFlightRochester prepares for #Father’sDay mission trip | #Mission72 RochesterFirst https://t.co/4xmTHnyK8v
#Mission72 - A Fight For Garbage Free Raipur
People come at Marine Drive Raipur to support RJ Animesh.
94.3 MY FM RJ Arjun #15August
इन आँखों में रायपुर के लिए कचरे से आज़ादी के विश्वास के साथ आप सब को स्वतंत्रता दिवस की हार्दिक शुभकामनाएं
#happyindependenceday #mission72 #support #raipur
Thank you so much for your super support #bunchofools you guys are so amazing and inspiring
#mission72 #independence #smartcity
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