Orion and surrounding dust- five panel mosaic (Firooz Amjadi)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 34 Ori) · 36 Ori) · 41 Ori A) · 42 Ori) · 44 Ori) · 46 Ori) · 48 Ori · 49 Ori) · 50 Ori) · Flame Nebula · Great Orion Nebula · IC 426 · IC 430 · IC 431 · IC 432 · IC 434 · Lower Sword · M 42 · M 43 · Mairan's Nebula · NGC 1975 · NGC 1976 · NGC 1977 · NGC 1980 · NGC 1981 · NGC 1982 · NGC 2023 · NGC 2024 · NGC 2064 · NGC 2067 · And 15 more.

Orion and surrounding dust- five panel mosaic, Firooz Amjadi

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Orion and surrounding dust- five panel mosaic

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Orion and surrounding dust- five panel mosaic

The cropping was done so that the whole composition could be viewed with low and medium enlargements.

The stars were replaced with images captured with the lens front apertured to get rid of the dark diffraction bow ties around bright stars due to front element vignetting.
This also reduced the exposure for the core.
Even shorter exposures were made for the core.

Many masks and curves were used to reduce overall dynamic range and increase local contrast. This was done bring out contrast in the surrounding dust.
This came at the expense of increased noise particularly in the dark areas.

Technical:

Camera: Pentax K-1 full spectrum with UV-IR block filter.

Mount: Celestron AVX

Lens: Kowa 500mm F5.5FL Prominar + TX07 350mm F4 reducer

ISO: 3200

Exposure: Mostly 240s

Polar alignment: Sharpcap

Software: Photoshop CS6

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Status	Basic success
Started	...
Astrometry.net job	7147491
PixInsight job	n/a
PixInsight queue size	n/a
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Orion and surrounding dust- five panel mosaic

Orion and surrounding dust- five panel mosaic

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Orion and surrounding dust- five panel mosaic

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