Fairy Devices Inc.

About the Sensor
	Purpose The USB connected 6-axis (1) sensor accurately detects the direction to which it is pointed. This sensor is essential external hardware for the configuration of StellarWindow and its function as planetarium software. 1 Acceleration angle in x, y, z and earth magnetism in x, y, z axis. It neither contains a rotation accelerometer, nor a gyro.
	Sensor Accuracy The sensor provides angular and directional resolution of 0.1 degree in a frequency of 20 times per second. By means of an appropriate statistical algorithm StellarWindows displays these values (1) in a resolution of 1 degree. 1) This not guaranteed accuracy: resolution is a statistically, reasonably presumed figure and therefore not a value that warrants absolute accuracy. Compensation of deviation angle North, to which a compass points (magnetic north), and true north slightly differ by amounts depending on location on Earth. This phenomena is referred to as "Deviation Angle, Deflection Angle or Declination". StellarWindow allows for compensation of this phenomena. Calibration The sensor is subceptible to magnetic interferences emitted by binoculars, televisions, loudspeakers, etc. which disturb the geomagnetic field causing inaccurate outputs. In such an event, a simple process called calibration will compensate for the influence of circumferent magnetic fields thus correcting the sensor's values for direction.
	Included USB extension cable StellarWindow is supplied with a 1 meter USB extension cable. By using this cable to extend the sensor and by holding it like a pointer, StellarWindow will display the area of the sky centered around the location in the sky to which the sensor is pointed. Let's go for stargazing! There are numerous ways of pointing (aligning) the sensor to the sky, manually, plugged into a tablet PC, or mounted on a pair of binoculars. The possiblities are infinite. Tip: Connect your PC to a large TV screen or LCD projector which enlarge the images of StellarWindow to dimensions that give the feeling of owning a private planetarium.

Abundant Astronomical Information
	Sun, Moon, Milky Way This is an approx. 50 deg (1) view of StellarWindow's sky display. The maximum selectable view is 100 deg wide. 2.6 million stars are included, while the image of the Milky Way is composed of several hundred individual frames. The sky globe outlined in blue at the bottom right shows the size and position of the current field of view depicted by a yellow square. Rather than just knowing the names and the shapes of the constellations, the overwhelming beauty of the night sky is what really enchants. In a way, StellarWindow virtually penetrates through city lights and air pollution like a window opening a vista to the actually existing beautiful night sky. In order to realize this concept, we have collected the best of the best photos from all around the world. 1) Field of View is the angular range of the sky centered on the viewing direction. The wider the field of view, the more sky you can overlook.
	Overview of astronomical information (1) This approx. 50 deg wide field of the sky superimposes the names of stars, planets, nebulae, star clusters and constellations as well as constellation lines, trusting that this level of information is useful. • Examples of star names: Alpheratz, origin: Arabic for "the face of the horse" Caph, origin: Arabic for "the hand" Algenib, origin: Arabic for "the flank" or "rib" Ankaa, origin: Arabic for "phoenix" Diphda, origin: Arabic for "the frog" Van Maanen, origin: an astronomer's name Mirak, origin: Arabic for "the loin-cloth" Markab, origin; Arabic for "shoulder of the horse" Rukbah, origin: Arabic for "the knee" Achernar, origin: Arabic for "the end of the river" Baten Kaitos, origin: "the belly of cetus" Matar, origin: "the lucky star of the rain" Sheratan, origin: Arabic for "the two signs" Al Resha, origin: "the knot" Almak, origin: Arabic for "the earth-kid" Hamal, origin: Arabic for "the ram's head" Mira, origin: Latin for "wonderful" Azha, origin: Arabic for "the hatching-place" Acamar, origin: Arabic for "the end of the river" Menkar, source: Arabic for "the nostril" Algol, source: Latin for "the ghoul"
	Overview of astronomical information (2) This approx. 50 deg wide field of the sky shows artificial satellites and constellation figures as well. Figures for all 88 constellations are available. Also included are the 100 brightest satellites visible to the naked eye, plus the International Space Station (ISS) and the Hubble Space Telescope (HST).
	The stars of the Southern Hemisphere This screen snap shows the vicinity of the Southern Cross. Wth StellarWindow you can easily explore the stars of the southern skies. When you travel to Australia, make sure to take StellarWindow with you. Using the real ability of a mobile planetarium, StellarWindow will make you enjoy the full entity of stars and constellations, otherwise visible only in the southern hemisphere.

Celestial Images
	Natural symbiosis of photograhy and computer graphics This is an enlarged view of the Pleiades star cluster created from HST photos and star chart data (1). Stars drawn by computer graphics twinkle to reproduce the effects of atmospheric fluctuations. High definition photography with superimposed twinkling stars, photorealistic or not, exhibit beautiful realism of the night sky. The combination of high quality photos with tastes of computer graphics produces a night sky display you will never get tired of watching. 1 Depending on magnification rate, remote and smaller deepsky objects do not necessarily match, because, in a few cases though, the star map data may determine positions only moderately.
	The Andromeda Galaxy and M110 This is a magnified view of the Andromeda Galaxy which can be seen with the naked eye since it is a large and comparatively bright galaxy. Because StellarWindow is a "Window to the stars" it can surely enlarge views which, overwhelmingly displayed on a large monitor, outperform a little planetarium. Your private planetarium will guaranteed be useful as a star album as well. At this time, about 200 enlarged photos of objects, including almost all Messier objects (2), are in the database while we are planning to provide additional images free of charge. 2) A catalog of 110 nebulae, star clusters and galaxies compiled by the French astronomer Charles Messier in 1781.
	Globular Star Cluster M15 This is a magnified view of the vicinity of M15. It is enlarged to the maximum of 9 minutes of arc (1). Since magnification can be adjusted most flexibly, it is also possible to simulate a view through binoculars. 1) 1 deg of arc = 60 minutes of arc. A field of view of 9 minutes of arc results in 0.15 deg of sky spanning over the screen width, a display of a pretty narrow excerpt.
	The "Whirlpool Galaxy" M51 This is a magnified view of the vicinity of the interactive spiral galaxy M51 filling a view of 8 minutes of arc (1). 1) 1 deg of arc = 60 minutes of arc. A field of view of 8 minutes of arc results in 0.13 deg of sky spanning over the screen width, a display of a pretty narrow excerpt.
	The Great Orion Nebula M42 This is a magnified view of the vicinity of the Great Nebula in Orion. A composite compiled using several single frames which were synthetically further processed employing computer graphics.

The Solar System

The Planets of the Solar System
High definition images of the planets and their major natural satellites taken by unmanned spacecrafts have been used to create stereoscopic (3D) models (*1) of the surfaces. The phases of the planets are displayed accurately, including the transparency (*2) of the rings of Saturn and Uranus.

*1) Limitation of 3D moon models: currently all spheroids are modeled, small moons excepted.
*2) Unreproduced shadows: currently shadows casted by primary moons on the rings are not reproduced.

Jupiter
Jupiter shown in moderate magnification. Since there is much more room for resolution, you can zoom in to more detailed patterns by further magnification.

Uranus
Uranus shown in moderate magnification. Its largest moon Ariel can be found at the bottom far left.

Io
This is a magnified image of Jupiter's first moon. As implemented for Jupiter, Io's surface, too, is a composite of hi-res spacecraft images. Besides the Earth moon, StellarWindow includes images of the follwing planetary satellites:

Mars Phobos (1st moon) Deimos (2nd moon)	Jupiter Io (1st moon) Europa (2nd moon) Ganymede (3rd moon) Callisto (4th moon)
Saturn Mimas (1st moon) Enceladus (2nd moon) Thetis (3rd moon) Dione (4th moon) Rhea (5th moon)	Uranus Ariel (1st moon) Umbriel (2nd moon) Titania (3rd moon) Oberon (4th moon) Miranda (5th moon)

The Earth Moon
This is a moderately magnified image of the Moon. Since there is much more room for resolution, you can zoom in to more detailed patterns by further magnification. The Moon phases are accurately displayed.

You will be dwelled by the beauty of the Moon. Actually, many users employ StellarWindow as a private planetarium just for the Moon. In future, we will provide free upgrades that will further improve the lunar portraits.

What is more, solar and lunar eclipses are duely reproduced. The only match (rival) for StellarWindow are real eclipses.

Orbit Calculations for Artificial Satellites
	This is a magnified image of the International Space Station. StellarWindow incorporates a list of approx. 100 bright artificial satellites, performs real time orbit calculations (1) and displays satellite positions in the sky. Predictive calculations (2) of satellite brightnesses (magnitudes) are also provided which is helpful during actual visual satellite observations. The list of satellite elements can be updated online at any time. Magnified 3D models of the International Space Station (ISS) and the Hubble Space Telescope (HST) are included as well. 1) Low-earth-orbits only: since computations are based on the SGP4 method, only low-earth-orbit satellites are shown. 2) Computation accuracy: reference value (±2 magnitudes) only, since precise computations come hard to magnitudes. • List of included satellites ISS (ZARYA) EGP (AJISAI) HST AQUA ADEOS-2 H-2A R/B SUZAKU (ASTRO-EII) ALOS (DAICHI) AKARI (ASTRO-F)

Orbit Calculations for Artificial Satellites

This is a magnified image of the International Space Station. StellarWindow incorporates a list of approx. 100 bright artificial satellites, performs real time orbit calculations (*1) and displays satellite positions in the sky.

Predictive calculations (*2) of satellite brightnesses (magnitudes) are also provided which is helpful during actual visual satellite observations. The list of satellite elements can be updated online at any time.

Magnified 3D models of the International Space Station (ISS) and the Hubble Space Telescope (HST) are included as well.

*1) Low-earth-orbits only: since computations are based on the SGP4 method, only low-earth-orbit satellites are shown.
*2) Computation accuracy: reference value (±2 magnitudes) only, since precise computations come hard to magnitudes.

• List of included satellites
ISS (ZARYA)
EGP (AJISAI)
HST
AQUA
ADEOS-2
H-2A R/B
SUZAKU (ASTRO-EII)
ALOS (DAICHI)
AKARI (ASTRO-F)

Application Examples
	StellarWindow installed on a Tablet PC Installed on a tablet PC (1) with the supplied sensor plugged in, StellarWindow will get closest to a real window to the stars as you move the screen along the sky. By adjusting viewing angle and distance of your eyes from the screen you can get a perfect match with the stars of the real sky. This is the true meaning of StellarWindow, namely, a window to the stars -- exactly the concept which our developers were aiming at. And that is why we also refer to it as a mobile planetarium. 1) A tablet PC is not included. Please check our product details page.
	Binoculars for Guiding Thanks to the supplied USB extension cable (1), the sensor can be mounted on binoculars (2, 3). Then, whilst observing the sky, StellarWindow will follow the movements of the binoculars and help identify any object of interest. Of course, the viewing angle in StellarWindows can be matched to the binocular's true field of view. StellarWindow is the ideal companion for sky observations with binoculars. The software is capable of voice guiding by which means remaining angles to a target are read aloud in that there is no need for watching the computer's screen whilst holding the binoculars. StellarWindow will guide you by voice until the object of interest gets inside your binocular's field of view. This is real fun, indeed! 1) The length of the supplied extension cable is 1 meter, which is sufficient for holding the sensor in the hand, however, for attachment to binoculars, a longer, separately purchased, extension cable might be more convenient. 2) Binoculars are not included, but user supplied. Please check our product details page. 3) The mounting adapter on the photo is a development prototype. It is neither included, nor currently sold. For the time being, please devise a mounting method by making use of the hole in the supplied sensor. It is important for guiding accuracy that the sensor is well aligned to the optical axis of the binoculars.

Application Examples

StellarWindow installed on a Tablet PC
Installed on a tablet PC (*1) with the supplied sensor plugged in, StellarWindow will get closest to a real window to the stars as you move the screen along the sky. By adjusting viewing angle and distance of your eyes from the screen you can get a perfect match with the stars of the real sky.

This is the true meaning of StellarWindow, namely, a window to the stars -- exactly the concept which our developers were aiming at. And that is why we also refer to it as a mobile planetarium.

*1) A tablet PC is not included. Please check our product details page.

Binoculars for Guiding
Thanks to the supplied USB extension cable (*1), the sensor can be mounted on binoculars (*2, *3). Then, whilst observing the sky, StellarWindow will follow the movements of the binoculars and help identify any object of interest. Of course, the viewing angle in StellarWindows can be matched to the binocular's true field of view.

StellarWindow is the ideal companion for sky observations with binoculars. The software is capable of voice guiding by which means remaining angles to a target are read aloud in that there is no need for watching the computer's screen whilst holding the binoculars. StellarWindow will guide you by voice until the object of interest gets inside your binocular's field of view. This is real fun, indeed!

*1) The length of the supplied extension cable is 1 meter, which is sufficient for holding the sensor in the hand, however, for attachment to binoculars, a longer, separately purchased, extension cable might be more convenient.

*2) Binoculars are not included, but user supplied. Please check our product details page.

*3) The mounting adapter on the photo is a development prototype. It is neither included, nor currently sold. For the time being, please devise a mounting method by making use of the hole in the supplied sensor. It is important for guiding accuracy that the sensor is well aligned to the optical axis of the binoculars.

Celestial Images
	Natural symbiosis of photograhy and computer graphics This is an enlarged view of the Pleiades star cluster created from HST photos and star chart data (1). Stars drawn by computer graphics twinkle to reproduce the effects of atmospheric fluctuations. High definition photography with superimposed twinkling stars, photorealistic or not, exhibit beautiful realism of the night sky. The combination of high quality photos with tastes of computer graphics produces a night sky display you will never get tired of watching. 1 Depending on magnification rate, remote and smaller deepsky objects do not necessarily match, because, in a few cases though, the star map data may determine positions only moderately.
	The Andromeda Galaxy and M110 This is a magnified view of the Andromeda Galaxy which can be seen with the naked eye since it is a large and comparatively bright galaxy. Because StellarWindow is a "Window to the stars" it can surely enlarge views which, overwhelmingly displayed on a large monitor, outperform a little planetarium. Your private planetarium will guaranteed be useful as a star album as well. At this time, about 200 enlarged photos of objects, including almost all Messier objects (2), are in the database while we are planning to provide additional images free of charge. 2) A catalog of 110 nebulae, star clusters and galaxies compiled by the French astronomer Charles Messier in 1781.
	Globular Star Cluster M15 This is a magnified view of the vicinity of M15. It is enlarged to the maximum of 9 minutes of arc (1). Since magnification can be adjusted most flexibly, it is also possible to simulate a view through binoculars. 1) 1 deg of arc = 60 minutes of arc. A field of view of 9 minutes of arc results in 0.15 deg of sky spanning over the screen width, a display of a pretty narrow excerpt.
	The "Whirlpool Galaxy" M51 This is a magnified view of the vicinity of the interactive spiral galaxy M51 filling a view of 8 minutes of arc (1). 1) 1 deg of arc = 60 minutes of arc. A field of view of 8 minutes of arc results in 0.13 deg of sky spanning over the screen width, a display of a pretty narrow excerpt.
	The Great Orion Nebula M42 This is a magnified view of the vicinity of the Great Nebula in Orion. A composite compiled using several single frames which were synthetically further processed employing computer graphics.