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greg.lynes

M 101 Pinwheel Galaxy

  • 2 sessions
  • 454 images
  • 6.18 hours

Details

M101
Pinwheel Galaxy

Subs (5hrs 35m)
G 86 frames 60s 1hrs 26m
R 83 frames 60s 1hrs 25m
B 84 frames 60s 1hrs 24m
L 160 frames 30s 1hrs 20m

Pixinsight
Blur Ext
Graxpert
LRGB Combination on RGB
SPCC
Star Ext
Seti Statistical Stretch on RGB
GHS on Luminance
LRGB Combination to add Lum
Curves and Masks for Saturation
Dark Structure enhance
Local Histogram Transformation
Dynamic crop after adding stars

Stars
SetiAstro Star Stretch
Add stars back
Star Reduction after Dynamic crop

Lightroom
Blackpoint
Small texture and clarity adjustment

Info
M101 also known as the Pinwheel galaxy, is located 25 million light-years away from Earth in the constellation Ursa Major. The giant spiral disk of stars, dust, and gas is 170,000 light-years across — nearly twice the diameter of our galaxy, the Milky Way. M101 is estimated to contain at least one trillion stars. The galaxy’s spiral arms are sprinkled with large regions of star-forming nebulas. These nebulas are areas of intense star formation within giant molecular hydrogen clouds. Brilliant, young clusters of hot, blue, newborn stars trace out the spiral arms.

Sessions

Date L R G B
2025-06-16 0.8 0.93 0.8 0.82
2025-06-18 0.69 0.7 0.68 0.75
Total 1.49 1.63 1.48 1.57

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