I last shot this thing back in 2022, decided to give it another go from darker skies. Captured on April 19th, 2026 from a Bortle 3 zone (Deerlick Astronomy Village).
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-290mc for guiding
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Moonlite Autofocuser
Acquisition: 8 hours 30 minutes (Camera at unity gain, -15°C)
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L - 68x180"
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R - 34x180"
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G - 34x180"
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B - 34x180"
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Darks- 30
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Flats- 30 per filter
Capture Software:
- Captured using N.I.N.A. and PHD2 for guiding and dithering.
PixInsight Preprocessing:
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BatchPreProcessing
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StarAlignment
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Blink
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ImageIntegration per channel
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DrizzleIntegration (2x, Var β=1.5)
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Dynamic Crop
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Multiscale Gradient Correction with MARS Project data
Luminance linear:
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BlurXterminator
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StarXterminator to completely remove stars (extracted stars processed separately)
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ArcsinhStretch + HistogramTransformation to stretch nonlinear
RGB Linear:
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Channelcombination to make color image from RGB stacks
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SpectrophotometricColorCalibration
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BlurXTerminator
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StarX to remove stars (to be used for star addition later)
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HSV Repair
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ArcsinhStretch + HistogramTransformation to stretch nonlinear
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Slight curves saturation boost and histogram adjustments
Stars only image:
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BlurXterminator for discortion correction and some mild star reduction
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ArcsinhStretch + HistogramTransformation to stretch nonlinear (less aggressive stretch)
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Slight curve adjustments
Nonlinear Processing
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LRGBCombination to combine stretched RGB and L images
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DeepSNR Noise reduction
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Shitloads of curve transformations to adjust luminance, contrast, saturation, etc
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More curves
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NoiseXterminator for small scale chrominance noise reduction
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LocalHistogramEqualization
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Pixelmath to add in the stretched stars only image from earlier
This basically re-linearizes the two images, adds them together, and then stretches them back to before. More info on it here
mtf(.005,
mtf(.995,Stars)+
mtf(.995,Starless))
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NoiseXTerminator for some small scale chrominance noise reduction
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Resample to 80%
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DynamicCrop in on just the galaxy
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Annotation

More pics are being uploaded here:




Essentially every stacking program have options to reject outlier pixels, such as the satellites. Hell even just averaging the pixels in an image stack without the outlier rejection would greatly diminish the streaks.