NASA | Laser Focus: The Receiver

The video tutorial, presented by Tyler Evans, an optomechanical engineer, explains the components and functions of the telescope used in the Icesat 2 mission's Atlas instrument. It covers the telescope's structure, alignment, and control systems, including the use of green lasers and the LRS camera. The tutorial also details the process of photon detection and analysis, as well as stellar navigation and filtering, highlighting the use of optical filters and PMT detectors.

What is the primary material used in the construction of the telescope, and why is it chosen?

• Steel, for its durability

• Beryllium, for its high strength to weight ratio

• Aluminum, for its lightweight properties

• Carbon fiber, for its flexibility

How does the Telescope Alignment Monitoring System (TAMS) assist in the telescope's operation?

• By adjusting the telescope's focus

• By tracking the telescope's pointing direction

• By monitoring the telescope's temperature

• By cleaning the telescope's lenses

What is the function of the Laser Reference System (LRS) in the telescope?

• To filter out unwanted light

• To control the telescope's alignment

• To enhance the telescope's resolution

• To measure the distance to celestial objects

What is the purpose of the optical filter assemblies in the photon analysis process?

• To increase the speed of photon collection

• To focus the light more precisely

• To allow only specific wavelengths of light to pass through

• To convert photons directly into images

How does the LRS camera determine the satellite's orientation relative to Earth?

• By tracking the movement of the sun

• By analyzing the angles of incoming star light

• By measuring the Earth's magnetic field

• By using GPS signals