H. Michaelis
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View article: Observations of the Earth-Moon system by the JANUS camera for JUICE mission
Observations of the Earth-Moon system by the JANUS camera for JUICE mission Open
JANUS (Jovis, Amorum ac Natorum Undique Scrutator) [1] is the camera system on-board the ESA JUICE mission [2]. It covers with 13 filters the 360-1080 nm wavelength range, using a CMOS detector with 2000x1504 pixel and angular sampling of …
View article: The CHEOPS mission
The CHEOPS mission Open
The CHaracterising ExOPlanet Satellite (CHEOPS) was selected on October 19, 2012, as the first small mission (S-mission) in the ESA Science Programme and successfully launched on December 18, 2019, as a secondary passenger on a Soyuz-Frega…
View article: Comet interceptor's EnVisS camera sky mapping function
Comet interceptor's EnVisS camera sky mapping function Open
Entire Visible Sky (EnVisS) is one of the payload proposed for the ESA selected F-Class mission Comet Interceptor. The main aim of the mission is the study of a dynamically new comet, or an interstellar object, entering the inner solar sys…
View article: Ryugu as seen close up by MASCOT
Ryugu as seen close up by MASCOT Open
In October 2018, MASCOT landed on the surface of
\nRyugu to start a campaign of in-situ measurements. Its
\nbrief mission was successful, with the onboard camera
\nrevealing the surface of this C-type asteroid in unpre-
\ncedented detail. …
View article: The BepiColombo Laser Altimeter (BELA) during Near-Earth Commissioning Phase (NECP)
The BepiColombo Laser Altimeter (BELA) during Near-Earth Commissioning Phase (NECP) Open
The ESA/JAXA joint mission BepiColombo to Mercury was launched successfully on October 20, 2018 (UTC) from Kourou, French Guiana. Currently BepiColombo is on its nominal 7-years cruise to the innermost planet. BepiColombo consists of two s…
View article: Images from the surface of asteroid Ryugu show rocks similar to carbonaceous chondrite meteorites
Images from the surface of asteroid Ryugu show rocks similar to carbonaceous chondrite meteorites Open
Landing on the surface of Ryugu In October 2018, the Hayabusa2 spacecraft dropped the Mobile Asteroid Surface Scout (MASCOT) lander onto the surface of the asteroid (162173) Ryugu. Jaumann et al. analyzed images taken by the MASCOT camera …
View article: BELA transmitter performance and pointing stability verification campaign at DLR-PF
BELA transmitter performance and pointing stability verification campaign at DLR-PF Open
BELA is the first European planetary laser altimeter and shall be launched onboard of ESA's Mercury Planetary
\nOrbiter (MPO) as part of the BepiColombo spacecraft in October 2018. The complete development of the in-
\nstrument was done in…
View article: A compact very high resolution camera (VHRC) for Earth and planetary exploration using a large array (7k x 8k) CCD
A compact very high resolution camera (VHRC) for Earth and planetary exploration using a large array (7k x 8k) CCD Open
This paper, "A compact very high resolution camera (VHRC) for Earth and planetary exploration using a large array (7k x 8k) CCD," was presented as part of International Conference on Space Optics—ICSO 1997, held in Toulouse, France.
View article: AsteroidFinder – the space-borne telescope to search for NEO Asteroids
AsteroidFinder – the space-borne telescope to search for NEO Asteroids Open
This paper presents the mission profile as well as the optical configuration of the space-borne AsteroidFinder telescope. Its main objective is to retrieve asteroids with orbits interior to the earth's orbit. The instrument requires high s…
View article: Planetary exploration with optical imaging systems review: what is the best sensor for future missions
Planetary exploration with optical imaging systems review: what is the best sensor for future missions Open
When we talk about planetary exploration missions most people think spontaneously about fascinating images from other planets or close-up pictures of small planetary bodies such as asteroids and comets. Such images come in most cases from …
View article: The Ganymede Laser Altimeter - Instrument Design Overview with Radiation hard Transmitter
The Ganymede Laser Altimeter - Instrument Design Overview with Radiation hard Transmitter Open
The JUICE (Jupiter Icy Moons Ex-plorer) mission is part of ESA‘s Cosmic Vision Programme and its objective is to study Jupiter‘s plasma environment and the three icy moons Ganymede, Eu-ropa and Callisto. The JUICE spacecraft will be launch…
View article: The Agilkia boulders/pebbles size–frequency distributions: OSIRIS and ROLIS joint observations of 67P surface
The Agilkia boulders/pebbles size–frequency distributions: OSIRIS and ROLIS joint observations of 67P surface Open
By using the images acquired by the OSIRIS (Optical, Spectroscopic and Infrared Remote Imaging System) and ROLIS (ROsetta Lander Imaging System) cameras, we derive the size-frequency distribution (SFD) of cometary pebbles and boulders cove…