vdB
4 and ngc225 - nebulosity and Open Cluster in Cassiopeia - L+HaRGB
The above image is L+RGB done in Photoshop
ngc 225: From Wikipedia: "NGC
225 is an open cluster in the constellation Cassiopeia. It is located
roughly 2,200 light-years from Earth. It is about 100 to 150 million
years old."
vdB 4 aka Vandenberg 4, from Irida-Observatory.Org :"VdB 4 is a
reflection nebula in the constellation Cassiopeia. It is associated
with the very young open star cluster NGC 225. The cluster was
discovered by Caroline Herschel in 1783. VdB 4 is centered on the
variable star V594 Cas. There is some confusion about the bright nebula
LBN 604. Most probably LDN 604 refers to the brightest part of
VdB 4.
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Not a lot of info on this one. Part of Lynd's Bright Nebulae catalog.
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Camera: Moravian G4 w Astrodon Gen II LRGB filters
Scope: Astro-Physics AP155EDF w 4" FF
Mount: SB Paramount MX
Guiding: SBIG ST402ME on Borg 60 guidescope
10/10/12 x 10min each for RGB; 28 x 10min Luminance, 18 x 20min H-Alpha
Lucknow, Ontario, Canada
Sept 2024
Images captured with TheSkyX
Session orchestrated by CCD-Commander
Calibration and processing of the RGB and Luminance in PixInsight as
follows:
RGB: SPCC, BlurX, NoiseX, Gradient, Curves, HistogramTransform
Luminance: BlurX, NoiseX, StarX, Curves and HT and LHE
H-Alpha: BlurX, NoiseX, StarX, Curves and HT, HDRMMT and LHE
Photoshop processing:
RGB split into channels and the H-Alpha added to the Red and Blue using
Lighten mode at 100% and 15% respectively
Starless Luminance layered onto the RGB using Screen blend mode.
Tweaks and small noise reduction then Save-for-Web
Click on the image to see it 4x enlarged.
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