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Cygnus Loop Mosaic, Daniel He
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Cygnus Loop Mosaic

Cygnus Loop Mosaic, Daniel He
Powered byPixInsight

Cygnus Loop Mosaic

Equipment

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Acquisition details

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Description

A two panel mosaic of the Cygnus Loop in a modified Foraxx Palette.

First project since I moved my setup to SRO. It took almost two months to gather all the data due to weather and guiding issues. Each panel is drizzled 2x and processed at full resolution, the final image is 400+ MP and 2.6+ GB in size. The image displayed here is downsampled.

Processing Steps:
- Build Ha mosaic reference (StarAlignment)
- Build mosaics (StarAlignment, TrimMosaicTile, PhotometricMosaic)
- Crop
For RGB:
    - Channel combination
    - Background extraction
    - SPCC
    - BlurXTerminator
    - Stretch
    - StarXTerminator
For SHO:
    - Channel combination
    - Background exraction
    - BlurXTerminator
    - StarXTerminator
    - NoiseXTerminator
    - Channel extraction
    - Stretch
    - Foraxx combination
    - LRGB combination
- Recombine stars to starless
- Final tweaks in Affinity Photo

LRGB Channel Formulas:
L: 0.5*Ha+0.5*OIII
R: (OIII^~OIII)*SII+~(OIII^~OIII)*Ha
G: (OIII^~OIII^1.3)*Ha+~(OIII^~OIII^1.3)*OIII
B: OIII

Comments

Revisions

  • Cygnus Loop Mosaic, Daniel He
    Original
  • Cygnus Loop Mosaic, Daniel He
    B
  • Final
    Cygnus Loop Mosaic, Daniel He
    C

Sky plot

Sky plot

Histogram

Cygnus Loop Mosaic, Daniel He