ESA Science & Technology - XMM-Newton Telescopes

Each of the three XMM-Newton telescopes consists of:

• the mirror assembly door, which protected the optics during integration, launch and early orbit phase
• the entrance baffle, which provides visible straylight suppression at angles larger than 47°
• the X-ray baffle
• the mirror module
• an electron deflector, which produces a circumferential magnetic field which prevents low energy electrons reflected by the mirrors reaching the focal plane detectors
• the Reflection Grating Array (only in two of the three telescopes)
• the exit baffle, which provides an appropriate thermal environment