- cross-posted to:
- pics@lemmy.world
- cross-posted to:
- pics@lemmy.world
This deserves more attention! Great image! Thanks for sharing and taking the time to type out how you were able to capture it.
It may not be as big or well known as the other well known cluster in Hercules (M13), but it sure looks nice. Captured over 4 nights in July/August 2024 from a Bortle 9 zone
Places where I host my other images:
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TPO 6" F/4 Imaging Newtonian
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Orion Sirius EQ-G
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ZWO ASI1600MM-Pro
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Skywatcher Quattro Coma Corrector
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ZWO EFW 8x1.25"/31mm
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Astronomik LRGB+CLS Filters- 31mm
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Astrodon 31mm Ha 5nm, Oiii 3nm, Sii 5nm
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Agena 50mm Deluxe Straight-Through Guide Scope
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ZWO ASI-120MC for guiding
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Moonlite Autofocuser
Acquisition: 6 hours 55 minutes (Camera at half Unity Gain, -15°C)
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Lum - 209x60"
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Red - 78x60"
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Green - 62x60"
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Blue - 66x60"
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Flats- 30 per filter
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24 JimmyFlats per filter
Capture Software:
- Captured using N.I.N.A.
PixInsight Processing:
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BatchPreProcessing (with premade JimmyFlats)
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StarAlignment
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ImageIntegration
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DrizzleIntegration (2x, Var β=1.5)
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DynamicCrop
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DynamicBackgroundExtraction
duplicated each image and removed stars via StarXterminator. Ran DBE with a shitload of points to generate background model. model subtracted from original pic using the following PixelMath (math courtesy of /u/jimmythechicken1)
$T * med(model) / model
Luminance:
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BlurXTerminator (correct only mode)
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ArcsinhStretch + histogramtransformation to bring nonlinear
RGB:
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ChannelCombinaiton to combine monochrome R, G, B stacks into color image
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BlurXTerminator (correct only mode)
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SpectroPhotometricColorCalibration
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HSV Repair
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ArcsinhStretch + histogramtransformation to bring nonlinear
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Curves to saturate it a little
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MLT for large scale chrominance noise reduction
Nonlinear:
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LRGBCombination with stretched L as luminance
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DeepSNR Noise reduction
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Several CurveTransformations to adjust lightness, contrast, colors, saturation, etc.
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Invert > SCNR > invert > SCNR to remove some greens and magentas
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More curves
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A little bit of noiseXterminator
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DynamicCrop in on the clustert
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Resample to 75%
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Annotation
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