Though now beyond the crest of the most
recent solar maximum, the Sun always
puts on a grand display in the
Hydrogen-alpha band! Active Region
0456 marches across the south central
portion of the disk, while in the Northern
hemisphere several filaments blast
through the chromosphere.
The image scale I use to produce full-disk
views requires two sets (upper and lower)
each for both the surface detail and
fainter prominence detail. This yields a
relatively large (3072x3072 pixel) master,
which provides the basis for large-scale
(13" x 19") prints or smaller-sized low res
web-images as seen above.
This grayscale image (right) and the one
below it are full-scale croppings (not
reduced) taken from the master plate,
and show complex structure with greater
detail (the filament is the one seen in the
eastern central disk and the prominences
are those from the Northeast quadrant).
I prefer to go to a larger image scale
however (when atmospheric conditions
allow), to capture smaller surface details
or prominence activity, as this allows
closer scrutiny of the focus. The
generous (3072x3072 pixel) format allows
considerable size reduction during
processing, which in turn "tightens" the
image up substantially.
Image Info: Canon EOS 10D digital SLR,
Coronado Solarmax90/T-Max, and 30mm
blocking filter attached to a Takahashi
FS128 via T-mount TeleVue 2X
Powermate. Processing was done in
Images Plus and final polishing in Adobe
Taken on 10-Sep-2003 20:50UTC, North is up and East is to the left.