Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5451  ·  NGC 5455  ·  NGC 5457  ·  NGC 5461  ·  NGC 5471
M101 - The Pinwheel Galaxy, Kyle Butler
M101 - The Pinwheel Galaxy
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M101 - The Pinwheel Galaxy

M101 - The Pinwheel Galaxy, Kyle Butler
M101 - The Pinwheel Galaxy
Powered byPixInsight

M101 - The Pinwheel Galaxy

Equipment

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Acquisition details

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Description

Exposure Details

75x 180s each of Lum (Atik LOW gain preset)

25x 300s each of RBG (Atik LOW gain preset)

50x Darks and flats for calibration

10 hours total integration time

Processing

Processed each channel individually

Frames calibrated and stacked in PixInsight, drizzle 2x

DBE/ABE

MLT noise reduction on each channel with mask

Combined RBG using LinearFit and LRGBCombination

Another round of MLT on combined image with mask

BackgroundNeutrilzation, ColorCalibration, HistogramTransformation, CurvesTransformation

Add Luminance to RBG

Final minor CurvesTransformation and ColourSaturation

Final touch ups in photoshop (minor selective sharpening, local contrast enhancement)

Comments

Sky plot

Sky plot

Histogram

M101 - The Pinwheel Galaxy, Kyle Butler