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Skywatcher Captures Rare Image of Mysterious X-37B Military Space Plane

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Skywatcher Captures Rare Image of Mysterious X-37B Military Space Plane

Skywatcher and satellite tracker Ralf Vandebergh of the Netherlands recently caught a rare glimpse of the U.S. Air Force's secretive X-37B space plane.

Vandebergh said he'd been hunting for the robotic spacecraft for months and finally managed to track it down in May. But it took a bit longer to get photos of the vehicle.

"When I tried to observe it again [in] mid-June, it didn't meet the predicted time and path," Vandebergh explained. "It turned out to have maneuvered to another orbit. Thanks to the amateur satellite observers' network, it was rapidly found in orbit again, and I was able to take some images on June 30 and July 2."

The X-37B's recent passes were almost overhead, Vandebergh added.

Beyond expectations

The X-37B, also known as the Orbital Test Vehicle (OTV), looks like a miniature version of NASA's retired space shuttle.

"It is really a small object, even at only 300 kilometers [186 miles] altitude, so don't expect the detail level of ground-based images of the real space shuttle," Vandebergh said.

Taking this into consideration, the newly captured imagery far exceeded Vandebergh's expectations.

"We can recognize a bit of the nose, payload bay and tail of this mini-shuttle, with even a sign of some smaller detail," he said.

Vandebergh captured the photos using a 10-inch F/4,8 aperture Newtonian telescope with an Astrolumina ALccd 5L-11 mono CMOS camera. Tracking was fully manual through a 6×30 finderscope, he said.

Classified duties

The X-37B has winged past 666 days of flight on this latest mission, which is called OTV-5 because it's the fifth flight for the program.

OTV-5 began on Sept. 7, 2017, with a launch atop a SpaceX Falcon 9 booster from NASA's Kennedy Space Center (KSC) in Florida.

X-37B missions are carried out under the auspices of the Air Force Rapid Capabilities Office, and mission control for OTV flights is handled by the 3rd Space Experimentation Squadron at Schriever Air Force Base in Colorado. This squadron oversees operations of the X-37B and is tagged as the Air Force Space Command's premier organization for space-based demonstrations, pathfinders and experiment testing, gathering information on objects high above Earth and carrying out other intelligence-gathering duties.

And that may be a signal as to what the robotic craft is doing — both looking down at Earth and upward.

Related: US Air Force's Secretive X-37B Space Plane (Infographic)

Flight-duration record

Each X-37B mission has set a new flight-duration record for the program:

Most X-37B payloads are classified, and the Air Force releases few details about the spacecraft's orbit and activities. The only OTV-5 payload that Air Force officials have revealed is the Advanced Structurally Embedded Thermal Spreader, or ASETS-II.

Developed by the U.S. Air Force Research Laboratory (AFRL), this cargo is testing experimental electronics and oscillating heat pipes for long-duration stints in the space environment.

According to AFRL, the payload's three primary science objectives are to measure initial on-orbit thermal performance, to measure long duration thermal performance, and to assess any lifetime degradation.

July 6, 2019

https://www.livescience.com/65884-x-37b-space-plane-skywatcher-photo.html

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