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This has already been done, but accelerated rocket launch videos are always sensational. Photographer Emeric Le Bars recently captured the launch in downtown Los Angeles.
What was the rocket launched?
The launch captured in the time-lapse includes the latest variant of the SpaceX Falcon 9 rocket. Block 5 was introduced last May and brings many improvements, including increased payload and engine thrust. The rocket took off from Vandenberg Air Force Base, 140 km northwest of Los Angeles. The propellant (first phase) of this rocket had already been used on July 25 to put into orbit 10 Iridium NEXT communication satellites. Argentina has ordered at Falcon 9 the SAOCOMM-1A Earth Observation satellite in space. The launch was a success and the first stage of the rocket returned to its LZ-4 landing strip just minutes from Vandenberg. after takeoff, while the orbiting scene flew into space.
What creates this cloud visible in the sky?
In simple terms, this light show is called twilight phenomenon because the smoke, the unburned fuel and the condensation of the rocket are captured by sunlight at high altitude. The rocket was launched after sunset, the sun still lit up the upper part of the atmosphere because of the curvature of the earth, while the night had already fallen on Los Angeles. Finally, high winds at high altitude can spread exhaust debris for hundreds of kilometers, creating a massive trail of light.
The video clearly shows the separation of stages between the amplifier (reusable) and the stage in orbit (non-reusable). When the stages separate, the aircraft turns to land, while the orbiting section of the rocket continues its course in space.
How did the photographer capture this lapse of time?
Mr. Bars admitted that he had not done a lot of planning for this video. He said: "When I woke up this Sunday, I was not aware of the launch of the rocket until nobody on Instagram talked about it. So I decided to go to a place that I knew was west-southwest facing the ocean and where downtown Los Angeles was going to be. Finally, the speeded-up photographer decided to go to a different place with his friend Javid. . They installed their cameras in City Terrace, which faces downtown Los Angeles and lined up with the Rocket Trail.
After filming a few time intervals day after day, Le Bars has prepared his camera for launch. He mounted a Canon EF 17-40mm f / 4 on a Canon 5D Mark IV and set the focal length at 24mm. He explains, "I knew the rocket would go high in the sky, so I forgot the rule of thirds and took more sky than anything else. The rocket flew so close to the top of my frame. For settings, I knew that I wanted an interval of one second with a shutter of 0.5s to get smooth results. Then I opened my opening up to f / 4 to limit the ISO. I chose ISO 1250 which gives good results with the 5D Mark IV. I've captured the time-lapse with 474 raw footage. "
Image of Emeric Le Bars, used with permission.
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