IC 1985 - Barnard 3 and 4 in Perseus
IC 1985 - Barnard 3 and 4 in Perseus
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CLICK ON IMAGE FOR FULL SIZE VIEW (2600x1950) Scope: FSQ-106N refractor at f/5, Location: Laguna Mountains, CA 18 October 2014 Camera: Atik 383L Exposure:
12 x 9 min (1x1 bin) exposures with UV/IR block, 8 x 9 min (2x2 bin)
H-Alpha exposures, 8 x 2.5 min (2x2 bin) RGB
exposures.
Processing: Data
Collection - Artemis Capture (as FITs).
Calibrated, stacked (Kappa Sigma Combine) - Deep Sky Stacker. LRGB channel
registration, equalization, and central gradient removal - Astroart.
Curves, Levels, RGB combine - ImagesPlus. Luminance Layering, final stretch, and
finishing - Photoshop. This image is a LHa- RHaGB combine with
Luminance layering. Color saturation in LAB color; H-Alpha and Luminance
exposure stacks were used for the luminance layer. Processing was in
up-sampled data (to simulate 1x1 bin). Final Image size is approximately
2600 x 1950. North is up in this
image. IC 1985 is a cluster with Nebulosity in the constellation of Perseus. The
core of the cluster is in the upper left portion of this image. Also in this
image is Barnard 3 and 4 across the middle of the image. The H-Alpha data
reveals the faint emission of LBN 749. Because of the Ha blend in the Red
channel , LBN 749 appears red though it is more of a neutral color - alternate
image without H-Alpha data. The bright star
is Omicron Persei. There is a duplicate entry in the IC catalog for this cluster
- it is also known as IC 348. The annotated
image shows these objects (and more). IC 1985 is a
young star forming region whose age is estimated at about 2 million years. IC
1985 is about 1,000 light years distant from Earth. Horizontal FOV is 120'
Image center is approximately - Equatorial 2000: RA: 03h 41m 22s Dec: +31°54'34"
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