NGC4565 Needle Galaxy (Kyle Desrosier)

NGC4565 Needle Galaxy

Link: https://www.instagram.com/p/CUv6DQKteO2/

NGC4565, dubbed the "Needle Galaxy", is a barred spiral galaxy 40 million light-years away in the constellation of Coma Berenices. The galaxy spans roughly 100,000 light-years. This is one of my favorite galaxies, so I was determined to shoot it, even with my tiny 80 APO. Took some time and a switch from Photoshop to PixInsight to get the color right.

Processing Details:

Pre-processing (for each channel):

- Blink

- ImageCalibration

- CosmeticCorrection

- SubframeSelector

- StarAlignment

- ImageIntegration

- DynamicCrop

- BackgroundModelization

Luminance:

- Deconvolution: DynamicPSF, star mask for local support, masked w/ binary range mask

- MultiscaleLinearTransform: masked w/ inverted low contrast mask

- HistogramTransformation

RGB:

- LinearFit

- ChannelCombination

- BackgroundNeutralization

- ColorCalibration

- SCNR: Green and blue

- MultiscaleLinearTransform: masked w/ inverted low contrast mask

- MultiscaleMedianTransform: masked w/ inverted super low contrast mask

- HistogramTransformation

LRGB:

- LRGBCombination

- TGVDenoise: lightness for local support, masked w/ inverted super low contrast mask

- HDRMultiscaleTransform: masked w/ galaxy mask

- LocalHistogramEqualization: masked w/ galaxy mask

- UnsharpMask: masked w/ galaxy mask

- MultiscaleMedianTransform: lightness, masked w/ inverted super low contrast mask

- MultiscaleMedianTransform: chrominance, masked w/ inverted low contrast mask

- CurvesTransformation: saturation increase of galaxy, masked w/ galaxy mask

- ColorSaturation: targeted core and spiral arms, masked w/ galaxy mask

- MultiscaleMedianTransform: chrominance, masked w/ inverted low contrast mask

- MultiscaleMedianTransform: lightness, masked w/ inverted super low contrast mask

- MorphologicalTransformation: masked w/ star mask

- HistogramTransformation: darkened background

- CurvesTransformation: desaturated background, masked w/ inverted binary range mask

- ExponentialTransform: masked w/ galaxy mask

- DynamicCrop

Original
Final
B

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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Status	Advanced success
Started	...
Astrometry.net job	5078697
PixInsight job	35G2FHE5W364OXQ55TDLGDDT3LS6GXAZ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h36m21s.30
RA (top/left)	12h40m48s.60
RA (top/right)	12h33m42s.94
RA (bottom/right)	12h31m55s.50
RA (bottom/left)	12h38m57s.35

Dec (center)	+25°59′21″.0
Dec (top/left)	+26°17′14″.9
Dec (top/right)	+26°50′55″.0
Dec (bottom/right)	+25°40′58″.6
Dec (bottom/left)	+25°07′35″.1

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