Credit & Copyright: Phil Jones
Explanation:
Enjoying Wednesday's
transit
of Mercury from Dallas, Texas, astronomer Phil Jones recorded
this detailed image of the Sun.
Along with a silhouette of the innermost planet,
a network of cells and dark
filaments can be seen against
a bright solar disk with spicules and
prominences along
the Sun's edge.
The composited image
was taken through a telescope equiped with an H-alpha filter
that narrowly transmits only the red light from
hydrogen atoms.
Such images emphasize the
solar chromosphere,
the region of the Sun's atmosphere immediately above
its photosphere or normally visible surface.
Left of center, the tiny disk of Mercury seems to be
imitating a small sunspot that looks a little too round.
But in H-alpha pictures,
sunspot regions are usually dominated by bright splotches (called
plages) on the
solar chromosphere.
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Yanvar' Fevral' Mart Aprel' Mai Iyun' Iyul' Avgust Sentyabr' Oktyabr' Noyabr' Dekabr' |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Publikacii s klyuchevymi slovami:
transit - H-alpha
Publikacii so slovami: transit - H-alpha | |
Sm. takzhe:
Vse publikacii na tu zhe temu >> |