Two Micron All-sky Survey
(near-infrared survey of both hemispheres)
The Two Micron All-sky Survey was a
of the entire sky by two dedicated telescopes,
at Fred Lawrence Whipple Observatory, Mount Hopkins, Arizona and Cerro Tololo Inter-American Observatory in Chile,
with observations carried out between 1997 and 2001.
The sky was imaged in three passbands: J (1.25 μm),
H (1.65 μm), and Ks (2.17 μm), i.e., the JHK photometric system.
Final data was released in 2003.
Targets included galaxies obscured by
Milky Way light, brown dwarfs,
low mass stars, and general cataloging.
It produced a astronomical catalog of over three million
objects and many 2MASS designators
of objects are now in common use.
| || |
|1.25μm||240THz||992meV||begin||Two Micron All-sky Survey|
|2.17μm||138THz||571meV||end||Two Micron All-sky Survey|
|Prefix||Example|| || |
|2MA||2MA 1835-3259||abbreviated|| |
|2MASP||2MASP J0345432+254023||prototype survey: or "2MASSP"|| |
|2MASS||2MASS J16264502-2423077|| || |
|2MASSI||2MASSI J0937347+293142||incremental release|| |
|2MASSW||2MASSW J0746425+200032||working database|| |
|2MASX||2MASX J00482185-2507365||"Extended source catalogue"|| |
|2MUCD||2MUCD 10390||ultracool dwarf|| |
Referenced by pages:
Two Micron Sky Survey (IRC)
Infrared Survey Facility (IRSF)
JHK photometric system (JHK)
TW Hydrae association (TWA)