Selective Comparison
Visible light is about 0.4 μm to 0.7 μm, and 0.75 μm to 1000 μm (1 mm) is a typical range for infrared astronomy, far-infrared astronomy, to submillimetre astronomy.
| Selected infrared space telescopes | |||||||
| Name | Year | Wavelength | |||||
|---|---|---|---|---|---|---|---|
| IRAS | 1983 | 5–100 μm | |||||
| ISO | 1996 | 2.5–240 μm | |||||
| Spitzer | 2003 | 3–180 μm | |||||
| Akari | 2006 | 2–200 μm | |||||
| Herschel | 2009 | 55–672 μm | |||||
| WISE | 2010 | 3–25 μm | |||||
| JWST | Planned | 0.6–28.5 μm | |||||
Read more about this topic: Infrared Telescope
Famous quotes containing the words selective and/or comparison:
“The selective memory isn’t selective enough.”
—Blake Morrison (b. 1950)
“The difference between human vision and the image perceived by the faceted eye of an insect may be compared with the difference between a half-tone block made with the very finest screen and the corresponding picture as represented by the very coarse screening used in common newspaper pictorial reproduction. The same comparison holds good between the way Gogol saw things and the way average readers and average writers see things.”
—Vladimir Nabokov (1899–1977)