NGC 1087 NGC 1090 in Cetus
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ON IMAGE FOR FULL SIZE VIEW (2400x1800) Scope:
Celestron 9.25 Edge 235 mm at f/7, Location: Blair Valley, Anza Borrego Desert, CA
17 November 2015 Camera: ST8300M (Baader LRGB filters) Exposure:
Exposure: 16 x 9 min (2x2 bin) and 6 x 10 min (1x1) IR/UV block exposures; 8 x 4.5 min (3x3 bin) RGB exposures. Processing: Data
Collection - Sequence Generator Pro (as FITs). Calibrated, stacked
(Sigma Kappa Combine) in Deep Sky Stacker, L - RGB channel registration,
equalization, central gradient removal - Astroart. Curves, Levels, and
Luminance development, RGB combine - Images Plus. Finishing - Photoshop.
Color calibration with eXcalibrator. This image uses UV/IR Block for the Luminance
channel and then a LRGB combine with Luminance layering. Saturation in LAB
color. Final Image size processed at approximately 3352x2532 cropped
and resized to 2400x1800. North is to the
right in this
image. There are a number of galaxies in this field; the two dominant ones
are NGC 1087 on the left and NGC 1090 on the right. At the upper right is
a smaller galaxy, NGC 1094. These galaxies are in order at increasing distances.
NGC 1087 is about 54 million light years; NGC 1090 about 110 million light
years; NGC 1094 about 200 million light years. The other smaller galaxies
in the annotated image range form 550 million light years up to about
billion light years as estimated by redshift. These galaxies are identified and highlighted in
the annotated image. This image replaces an earlier image
that can be seen in the Archives here.
The Horizontal FOV is 38' Image
center is approximately - Equatorial 2000: RA: 02h 46m 49.7s Dec: -00°23'43"
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