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Kujisann OP t1_j5efh0u wrote

Rosette Nebula (NGC 2237) lies about 5,200 light-years from Earth. It sits within the distant Monoceros Constellation of our Milky Way Galaxy.

Acquisition:

OIII: 108 X 300s (9hrs)

SII: 108 X 300s (9hrs)

Ha: 124 x 360s (12h24m)

Total integration time: 30h24m

Taken under Bortle 5 skies

OIII, SII, and Ha: 40 flats

-20°C on all calibration frames & light frames 60 Darks

40 Bias

100 Gain

Processing in PS & PI

Image integration and stacking

NoiseXTerminator

StarXTerminator

EZ Denoise

Star color corrections

Linear Dodge

Manual Gradient Adjustment

Adjusted levels

CurvesTransformation

Color Correction

Blacks Correction

Sharpening applied

Adjusted camera raw filters

APM 107/700

Chroma 50mm SII, OIII, and Ha 3nm Filters

ZWO EAF

ZWO EFW 7x50mm

Esprit 100ED

ZWO ASI2600MM-Pro

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Dynahazzar t1_j5fmd4t wrote

"Rosette nebula", yeah right. I recognize the Eye of Terror when I see it.

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FragleFameux t1_j5guulw wrote

Is it naturally this pink/purple? If so, do we know the composition that gives it? Or is it only due because of the heat of that zone?

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danielravennest t1_j5kg3vg wrote

Replying to FragleFameux (#1,442,177)

The author's photography details has "color correction", so this isn't the original colors. This photo has no correction, just straight the way the camera took it.

The Rosette Nebula is part of a giant molecular cloud, about 5000 light years away. Hot young stars are exciting the molecules in the cloud, causing them to emit light, somewhat like neon lights in stores have the gas excited by electricity.

Red is typically from ionized hydrogen, the most common element in the Universe. The middle part of this hydrogen discharge tube shows the natural glowing color. Other colors come from other elements.

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