NGC7129
and IC5134 in LRGB
NGC 7129 is a reflection nebula located 3,300 light years away in the
constellation Cepheus. A young open cluster is responsible for
illuminating the surrounding nebula.
A recent survey indicates the cluster contains more than 130 stars less
than 1 million years old. NGC 7129 is located just half a degree from
nearby cluster NGC 7142.(lower left)
The nebula is rosebud-shaped; the young stars have blown a large, oddly
shaped bubble in the molecular cloud that once surrounded them at their
birth.
The rosy pink color comes from glowing dust grains on the surface of
the bubble being heated by the intense light from the young stars
within.
The ultra-violet and visible light produced by the young stars is
absorbed by the surrounding dust grains. They are heated by this
process and release the energy at longer infrared wavelengths.
12/12/12 x 10 min each of RGB, 51 x 10min Luminance
Camera: Moravian G4 (16803) w Gen II Astrodon LRGB
Scope: AP155EDF w FT focuser and Focus Boss II
Mount: Paramount MX
Guiding SBIG ST402ME and Borg 60mm Acrhromat guidescope
PixInsight Processing:
RGB:
Gradient Correction, SPCC, BlurX, NoiseX, StarX. Starless image
stretched with Curves and HistogramTransformation then LocalHistogramEqualization and EnhancedDarkStructure.
Stars added back via Pixel Math. Masked boost to Saturation. Save-as-TIFF
Luminance:
Gradient, BlurX, NoiseX, StarX. Then Curves and HistogramTransformation folllowed
by LocalHistogramEqualization and DarkStructureEnhance. Noise reduction. Save-as-TIFF
Photoshop:
Starless Luminance pasted over the RGB using Luminance blend mode.
Then some curves, noise reduction and sharpening of the vdB nebula then Save-for-Web
Click on the image to see it full sized.
Lucknow, Ontario
Sept 2025
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