Shot this data exactly one year ago, started processing it, forgot about it, and just finished it now. I'd consider this an improvement over [my last attempt at this trio](https://www.reddit.com/r/astrophotography/comments/bskgjp/m95_m96_and_m105_galaxies_in_leo/) in 2019. Captured over 3 nights in December 2021 from a Bortle 6 zone
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**[Equipment:](https://i.imgur.com/ejpKkwU.jpg)**
* TPO 6" F/4 Imaging Newtonian
* Orion Sirius EQ-G
* ZWO ASI1600MM-Pro
* Skywatcher Quattro Coma Corrector
* ZWO EFW 8x1.25"/31mm
* Astronomik LRGB+CLS Filters- 31mm
* Astrodon 31mm Ha 5nm, Oiii 3nm, Sii 5nm
* Agena 50mm Deluxe Straight-Through Guide Scope
* ZWO ASI-290mc for guiding
* Moonlite Autofocuser
**Acquisition:** 5 hours 50 minutes (Camera at Unity Gain, -20°C)
* L- 89x120"
* R- 29x120"
* G- 29x120"
* B- 29x120"
* Darks- 30
* Flats- 30 per filter
**Capture Software:**
* Captured using [N.I.N.A.](https://nighttime-imaging.eu) and PHD2 for guiding and dithering.
**PixInsight Processing:**
* BatchPreProcessing
* SubframeSelector
* StarAlignment
* [Blink](https://youtu.be/sJeuWZNWImE?t=40)
* ImageIntegration
* DrizzleIntegration (2x, Var β=1.5)
**Linear:**
* DynamicCrop
* DynamicBackgroundExtraction
* EZ Decon/Denoise
* ArcsinhStretch + HistogramTransformation to stretch to nonlinear
**RGB:**
* Channelcombination to combine monochrome images into RGB image
* PhotometricColorCalibration
* HSV repair
* ArcsinhStretch + HistogramTransformation to stretch nonlinear
**Nonlinear:**
* LRGBCombination with luminance
* LRGBCombination with luminance again, inverted background mask used to protect galaxy from chronicance noise reduction
* Shitloads of CurveTransformations to adjust lightness, saturation, contrast, hues, etc.
* MLT noise reduction
* Unsharp mask to further sharpen the galaxy
* LocalHistogramEqualization
* EZ star reduction
* NoiseGenerator to add noise back into star reduced areas
* More curves
* NoiseXTerminator
* few more curves
* Resample to 60%
* annotation
lefty7283
