|
Exposure |
SII
570 min (19 x 30 min. bin 1x1)
Ha
360 min (12 x 30 min. bin 1x1)
OIII 450 min (15 x 30 min. bin 1x1)
Lum 180 min (12 x
15 min, bin 1x1)
RGB 270 min (
6 x 15 min each, bin 2x2)
SII, Ha & OIII are mapped
to RGB respectivly.
The lower image has 30% LRGB data added.
Click
here
for an LRGB natural
color version.
Click
here for an Ha filtered b/w version. |
|
Software |
CCDSoft,
CCDStack, Photoshop CS w/ the Fits Liberator plugin
and Noel Carboni's actions.
PixFix32 (pre-beta) to
repair hot/cold pixels and column defects.
CCDStack to calibrate, register,
normalize, data reject, combine the sub exposures & LRGB color
combine.
PhotoShop for LLRGB
combine &
on-linear stretching. |
|
Comment |
North is to the right.
IC 410 is at a
distance of about 12,000 light-years, toward the constellation
Auriga. The emission nebula surrounds NGC 1893, a young star
cluster, which energizes the gas. At the upper right are two
interesting objects, about 10 light-years long, that are commonly
named "The Tadpoles." Their creation by stellar winds and radiation
is most evident in that the Tadpole's tails point directly away from
the nebula's central star cluster.
These false color images were acquired with Ha, SII and OIII filters
mapped to the RGB channels respectively. The colors of top image
more closely follow the Hubble Palette, with the color channels
pretty much stretched to equal levels. The presence of sulfur,
hydrogen and oxygen are clearly shown. Red indicates the
presence sulfur, green hydrogen and blue oxygen. With no color
manipulation, the image would be basically green, due to the
dominance of hydrogen.
The lower image was processed with 30% added LRGB data to produce
a different color motif. |
