M51 Widefield (Stanley Dimant)

M51 Widefield

Link: https://www.facebook.com/darkSkiesAstro/posts/782778785257818

Shot with Atik 383L+ and D5100 on two scopes simultaneously and combined in postprocessing.

Acquisition

Atik 383L+ on TS Optics 70mm f/6 FPL53 Triplet, 95×150s L binned 1×1

Nikon D5100 on Skywatcher 200mm f/5 PDS, 257×30s RGB

ALccd QHY5-L-II(C) on TS Optics 50mm f/3.6 Guidescope for guiding

Orbsmart AW-08 for control of everything

Integration

-RGB

ImageCalibration

Debayering

Blink to remove frames that have dither issues (305 of 370)

SubframeSelector (257 out of 305)

Registration

ImageIntegration

-L

ImageCalibration

CosmeticCorrection

SubframeSelector (95 out of 98)

Registration

LocalNormalization

ImageIntegration

DrizzleIntegration (Scale 2, VariableK 1.5, 0.9 Drop Shrink)

Processing

-RGB

DynamicCrop

DynamicBackgroundExtraction

BackgroundNeutralization

PhotometricColorCalibration to Sb galaxy

SCNR Green .7

Deconvolution

TGVDenoise and MMT with Jon Ristas TGVDenoise Method

3× ArcSinhStretch, Factor 10, including protection of RGB and Highlights, no clipping

HistogramTransformation stretching Midtones and expanding lower dynamic range by -0.05

MultiScaleLinearTransform for Sharpening

MorphologicalTransformation to fix elongated stars

CurvesTransformation on stars to increase saturation

CurvesTransformation on Galaxy to increase saturation

-L

DynamicCrop

AutomaticBackgroundExtraction

Deconvolution

TGVDenoise and MMT with Jon Ristas TGVDenoise Method

ArcSinStretch, factor 100, including protect highlights, 0 blackpoint

HistogramTransformation, stretching Midtones and expanding lower dynamic range by -0.05

HDRMultiscaleTransform on the Galaxy, 5 layers, 1 iteration, B3 Spline

MultiscaleMedianTransform for sharpening

UnsharpMask for sharpening

MultiscaleMedianTransform on the Background to reduce splotches

-L+RGB

RGB StarAlignment on L

RGB Split channels in R/G/B

LRGB Combination with default values

MorphologicalTransformation to reduce star sizes

	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

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
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Status	Basic success
Started	...
Astrometry.net job	2029120
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

M51 Widefield

M51 Widefield

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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Image Index:

Contribution Index (beta):

M51 Widefield

M51 Widefield

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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