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Астронет: Астрономическая картинка дня Темная туманность LDN 1622 и Петля Барнарда http://variable-stars.ru/db/msg/1379631/eng |
Credit & Copyright: Leonardo Julio
(Astronomia Pampeana)
Explanation:
The silhouette of an intriguing
dark nebula
inhabits this cosmic scene.
Lynds' Dark Nebula
(LDN) 1622 appears below center
against a faint background of glowing hydrogen gas only easily
seen in long telescopic
exposures
of the region.
LDN 1622 lies near the plane of our Milky Way Galaxy,
close on the sky to
Barnard's
Loop - a large cloud surrounding the rich
complex of emission nebulae found
in the Belt and Sword
of Orion.
Arcs along a segment of Barnard's loop stretch across the top of the
frame.
But the obscuring dust of LDN 1622 is thought to be much closer
than Orion's more famous nebulae, perhaps only 500 light-years away.
At that distance, this 1 degree wide field of view
would span less than 10 light-years.
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings,
and Disclaimers
NASA Official: Jay Norris.
Specific
rights apply.
A service of:
LHEA at
NASA /
GSFC
& Michigan Tech. U.