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Contains:  12 Mon, NGC 2237, NGC 2238, NGC 2239, NGC 2246, NGC 2252, NGC2237, NGC2238, NGC2239, NGC2244, NGC2246, NGC2252, Rosette A, Rosette B, Rosette Nebula, Rosette nebula, Sh2-275, The star 12Mon
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Caldwell 49 Rosette Nebula HOO, 



    
        

            Kyle Desrosier
Powered byPixInsight

Caldwell 49 Rosette Nebula HOO

Technical card


Dates:Jan. 25, 2020Jan. 28, 2020Feb. 27, 2020Feb. 28, 2020

Frames:
ZWO Ha 36mm 7nm: 95x300" (gain: 200.00) -15C bin 1x1
ZWO OIII 36mm 7nm: 54x600" (gain: 200.00) -15C bin 1x1

Integration: 16.9 hours

Darks: ~30

Flats: ~25

Bias: ~100

Avg. Moon age: 2.92 days

Avg. Moon phase: 11.25%

Bortle Dark-Sky Scale: 4.00


Astrometry.net job: 3309080

RA center: 6h 31' 54"

DEC center: +4° 59' 45"

Pixel scale: 1.010 arcsec/pixel

Orientation: -166.059 degrees

Field radius: 1.608 degrees


Resolution: 9150x6900

Data source: Backyard

Description

I shot this for my 17 month old niece, Rose. I plan on getting it printed and having her parents hang it in her room. My hope is that it will one day foster an interest in science and astronomy as she looks at it with wonder while growing up. If not that, then at least an appreciation for how beautiful the Universe is.

Processing Details:

Pre-processing (for each channel):
- Blink
- ImageCalibration
- CosmeticCorrection
- SubframeSelector
- StarAlignment
- ImageIntegration
- DrizzleIntegration
- DynamicCrop
- BackgroundModelization
- Deconvolution: DynamicPSF, star mask for local support, masked w/ starless binary range mask
- MultiscaleLinearTransform: lightness NR, attenuated w/ inverted low contrast mask

Ha:
- LinearFit: -> Ha

HOO:
- ChannelCombination (pure HOO)
- BackgroundModelization
- BackgroundNeutralization
- ColorCalibration
- HistogramTransformation: non-linear
- TGVDenoise: luminance for local support, attenuated w/ inverted low contrast mask
- HDRMultiscaleTransform: masked w/ starless binary range mask, 65% amount using PixelMath
- LocalHistogramEqualization: large structures, masked w/ starless binary range mask
- LocalHistogramEqualization: small structures, masked w/ starless binary range mask
- DarkStructureEnhance
- MultiscaleMedianTransform: lightness NR, heavily attenuated w/ inverted low contrast mask
- MultiscaleMedianTransform: chrominance NR, attenuated w/ inverted low contrast mask
- ColorSaturation: masked w/ starless binary range mask
- CurvesTransformation: masked w/ starless binary range mask
- MultiscaleMedianTransform: lightness NR, heavily attenuated w/ inverted low contrast mask
- CurvesTransformation: removed stubborn cyan gradients, masked w/ cyan color mask
- HistogramTransformation: darkened background
- MorphologicalTransformation: reduced star sizes, masked w/ star mask
- ExponentialTransformation: attenuated w/ inverted low contrast mask

Comments

Author

kdesrosier
Kyle Desrosier
License: None (All rights reserved)
400
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Caldwell 49 Rosette Nebula HOO, 



    
        

            Kyle Desrosier

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