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IC443, The Jellyfish Nebula, HSO and RGB, AnaTa
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IC443, The Jellyfish Nebula, HSO and RGB

IC443, The Jellyfish Nebula, HSO and RGB, AnaTa
Powered byPixInsight

IC443, The Jellyfish Nebula, HSO and RGB

Equipment

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Acquisition details

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Description

One year on AstroBin and 1 year 4 months of experience!

IC443 Nebula RGB was used for annotation and captured during about 40 min.  Main image is HSO and has combined HSO SNR of about 70. 
Panel A: HSO
Panel B: RGB annotation

Processing:
R, G, B, Ha, Oiii and Sii were cropped.
GraXpert beta version was used to remove background.
RGB are combined.
DBE again for RGB. 
Color Colib for RGB
Blur and Noise XT for Ha, O3, S2 and RGB
Star XT for RGB. RGB stars were kept.
Manual stretching (with HT) for Ha, O3, S2, RGB (no stars), and RGB-stars (two different stretching: dimmer and brighter stars).

1. Processing (panels B)
RGB no stars were masked by Lum.
Local Histogram Equalization: Kernel radius of 40 and 150 
Multiscale-median transform for sharpness; strong 0.4-0.5 setting. 
Curves: saturation and brightness were manipulated 
Mask off.
Added saturated RGB stars (brighter star version).
Annotation

1. Processing (panel A)
Combined HSO as R-G-B
Star XT
Noise XT
Stretched again.
Lum for HSO was used as mask.
Curves: played with Hue-Saturation until final image.
Local Histogram Equalization: Kernel radius of 40, 150 and then 300 (histogram resolution is 10-bit!)
Multiscale-median transform for sharpness; strong 0.3-0.4 setting. 
Curves again: saturation and brightness were manipulated 
Blue and red were separately manipulating using "blue mask" and "red mask" scripts. 
Mask off.
Added RGB stars (dimmer stars).
Done

Comments

Revisions

  • IC443, The Jellyfish Nebula, HSO and RGB, AnaTa
    Original
  • Final
    IC443, The Jellyfish Nebula, HSO and RGB, AnaTa
    B

Sky plot

Sky plot

Histogram

IC443, The Jellyfish Nebula, HSO and RGB, AnaTa

In these collections

Nebulae (Emission)