• 17 Posts
  • 23 Comments
Joined 1 year ago
Cake day: July 13th, 2023
  • lefty7283@lemmy.worldOPtopics@lemmy.world•The Bubble Nebula in SHO [OC]English
    6·
    5 months ago

    So I shot the Bubble Nebula in true-color last year, but I decided to shoot it again this past month in false color. It really helps to show the extended nebulosity, and gives me and excuse to compare my image to Hubble’s. This false color image uses the SHO palette, where the sulfur-ii wavelength is mapped to red, hydrogen-alpha to green, and oxygen-iii is blue. I’m really happy with how the colors turned out on this one. There’s also a number of other nebulae and a star cluster in frame. Captured over 14 nights in Jan/Feb 2024 from a bortle 9 zone (I could only get a couple hours max per night on it.

    Places where I host my other images:

    Flickr | Instagram

    Equipment:

    • 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: 37 hours 36 minutes (Camera at -15°C), Camera at unity gain.

    • Ha - 95x360"

    • Oiii - 140x360"

    • Sii - 141x360"

    • Darks- 30

    • Flats- 30 per filter

    Capture Software:

    • Captured using N.I.N.A. and PHD2 for guiding and dithering.

    PixInsight Preprocessing:

    • BatchPreProcessing

    • StarAlignment

    • Blink

    • ImageIntegration per channel

    • DrizzleIntegration (2x, Var β=1.5)

    • Dynamic Crop

    • 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

    Narrowband Linear:

    • Blur and NoiseXTerminator

    • Duplicated the images before stretching to be used for separate stars-only processing

    • Slight stretch using HistogramTransformation

    • iHDR 2.0 script to stretch each channel the rest of the way.

    Stars Only Processing:

    • PixelMath to combine star images (SHO palette)

    • SpectroPhotometricColorCalibration (narrowband working mode)

    • StarXTerminator to make stars only image form each channel

    • SCNR > invert > SCNR > invert to remove greens and magentas

    • ArcsinhStretch + HT to stretch nonlinear - to be combined later with starless pic

    Nonlinear:

    • PixelMath to combine stretched Ha, Oiii, and Sii images into color image (SHO palette)

    • StarXterminator to remove stars

    • HistogramTransformations to tone back the greens and apply a more aggressive stretch to red and blue channels

    • Shitloads of Curve Transformations to adjust lightness, hues, contrast, saturation, etc

    • LRGBCombination with stretched Ha as luminance

    • DeepSNR

    • more curves

    • ColorSaturation to bring up the blues in the bubble

    • LocalHistogramEqualization

    • even more curves

    • MLT for chrominance noise reduction

    • 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

    mtf(.005,

    mtf(.995,Stars)+

    mtf(.995,Starless))

    • A round of NoiseXterminator for good measure

    • Resample to 60%

    • Annotation

  • lefty7283@lemmy.worldOPtopics@lemmy.world•M17 - The Omega Nebula [OC]English
    4·
    6 months ago

    M17 is also known as The Swan Nebula (the bright core is swan shaped, esp when viewed visually through a telescope). Also pictured it the M18 star cluster off to the right.

    I originally shot this back in 2019 and decided to reprocess it since we have fun new tools and techniques (and I kinda know what I’m doing now with narrowband processing). I decided to keep the palettes similar overall, but with a less agressive stretch and more ‘natural’ look to the nebula. The noise reduction is a lot better when comparing the images at 1:1 (long gone are the days of TGV/MMT noise reduction!). Captured over 2 nights at the in May, 2019 from a Bortle 7 zone.

    Places where I host my other images:

    Flickr | Instagram

    Equipment:

    • 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

    • Agena 50mm Deluxe Straight-Through Guide Scope

    • ZWO ASI-120MC for guiding

    • Moonlite Autofocuser

    Acquisition: 8 hours 10 minutes (Camera at Unity Gain, -15°C)

    • Ha- 42x300"

    • Oiii- 56x300”

    • Darks- 30

    • Flats- 30 per filter

    Capture Software:

    • EQMod mount control. Captured using N.I.N.A. and PHD2 for guiding and dithering.

    PixInsight Processing:

    • BatchPreProcessing

    • Blink

    • ImageIntegration

    • DrizzleIntegration (2X, VarK 1.5)

    • DynamicCrop

    • 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

    Narrowband Linear:

    • BlurXTerminator

    • NoiseXTerminator

    • STF Applied via HT to stretch nonlinear

    Nonlinear:

    • PixelMath to combine monochrone Ha and Oiii channels into color image (using ForaxX’s bicolor palette):

    R = Ha

    G= ((Oiii*Ha)^~(Oiii*Ha))*Ha + ~((Oiii*Ha)^~(Oiii*Ha))*Oiii

    B = Oiii

    • SCNR Green

    • LRGBCombination with stretched Ha as luminance

    • Shitloads of curve transformations to adjust lightness, contrast, hues, saturation, etc

    • LocalHistoGramEqualization 2x - one at scale 16 for fine details and one at 512 for large structures

    • More curves

    • DarkStructureEnhance

    • MLT for small scale chrominance noise reduction

    • NoiseXTerminator

    • Even more curves, some masked to just the core of the nebula

    • Resample to 60%

    • Annotation

  • lefty7283@lemmy.worldOPtopics@lemmy.world•The Christmas Tree Cluster and Cone Nebula [OC]English
    2·
    6 months ago

    Figured today is an appropriate day to post this. This nebula is also known as NGC 2264 I’m fairly certain the christmas tree is the entire nebula when the photo is inverted, and not just the cone nebula at the very end of it. Captured on November 17th, 2022, from a Bortle 4 zone.

    Places where I host my other images:

    Flickr | Instagram |

    Equipment:

    • 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: 4 hours 2 minutes (Camera at half unity gain, -15°C)

    • L- 62x120"

    • R- 20x120"

    • G- 20x120"

    • B- 19x120"

    • Ha -47x300" x 2 panels

    • Darks- 30

    • Flats- 30 per filter

    Capture Software:

    • Captured using N.I.N.A. and PHD2 for guiding and dithering.

    PixInsight Processing:

    • BatchPreProcessing

    • SubframeSelector

    • StarAlignment

    • Blink

    • ImageIntegration

    • DrizzleIntegration (2x, Var β=1.5)

    Linear:

    • DynamicCrop

    • automaticBackgroundExtraction

    • EZ Decon

    • NoiseXTerminator

    Stretching Luminance:

    • MaskedStretch to 0.1 background

    • Starnet++ starmask made, subtracted from 0.3 Gray image and colvolved

    • Previous image used as a mask to stretch nebulosity without stretching stars

    • Normal HistogramTransformation

    RGB Linear:

    • Channelcombination to combine monochrome images into RGB image

    • SpectroPhotometricColorCalibration

    • SCNR green

    • HSV Repair

    • ArcsinhStretch + HT to bring nonlinear

    Nonlinear:

    • LRGBCombination with stretched luminance

    • Shitloads of CurveTransformations to adjust lightness, saturation, contrast, hues, etc.

    • Extract L --> LRGBCombination for chrominance noise reduction

    • More curves

    • SCNR to remove some background greens

    • LocalHistogramEqualization

    Two rounds of this. one at size 16 for the finer ‘feathery’ details and one at size 500 for large scale structures

    • ColorSaturation

    • even more curves

    • NoiseXTerminator

    • EZ Star Reduction

    • noise generator to add noise back into star reduced areas

    • MLT for chrominance noise reduction

    • Resample to 60%

    • Annotation

  • lefty7283@lemmy.worldOPtopics@lemmy.world•The Flying Bat and Squid Nebulae [OC]English
    6·
    7 months ago

    This target has always been a goal of mine since starting in this hobby. While the Flying Nebula (aka Sh2-129, all the red stuff), the Squid Nebula (aka OU4, the blue stuff) was only discovered in 2011. It’s stupidly faint. Because of this, and my horrible light pollution, I had to get a ton of exposure time to bring it out, and ended up getting 110 hours total time on it. This is a combination of images taken through hydrogen-alpha and oxygen-iii filters for the nebulosity, plus RGB filters for true-color stars (the nebulosity is kinda close to true color). I have no clue why the Ha region is called ‘the flying bat’, but the Oiii structure sure looks like a squid alright.

    Captured over a shitload of nights from September to December, 2023. Broadband data from a Bortle 9 zone.

    Places where I host my other images:

    Flickr | Instagram

    Equipment:

    • 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: 110 hours 15 minutes (Camera at -15°C)

    BB exposures at half unity gain (76/15), Ha at unity gain (139/21)

    • Ha - 212x600"

    • Oiii - 428

    • L - 200x120"

    • R - 69x60" 69 71 66

    • G - 71x60"

    • B - 66x60"

    • Darks- 30

    • Flats- 30 per filter

    Capture Software:

    • Captured using N.I.N.A. and PHD2 for guiding and dithering.

    PixInsight Preprocessing:

    • BatchPreProcessing

    • StarAlignment

    • Blink

    • ImageIntegration per channel

    • DrizzleIntegration (2x, Var β=1.5)

    • Dynamic Crop

    • 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

    **Narrowband Linear:

    • Honestly just StarXterminator and EZ soft stretch to bring them nonlinear.

    • Duplicated the Oiii before stretching to be used for advanced narrowband combination:

    Oiii advaned narrowband combination:

    These steps largely follow the ones in Jimmy/NightPhoton’s advanced narrowband combination guide.

    • Combine Oiii with Green broadband channel channel (OGG palette)

    • BackgroundNeutralization

    • ColorCalibration

    • StarXterminator to completely remove stars

    • PixelMath to subtract green continuum spectrum, leaving just Oiii signal

    • HistogramTransformation to stretch nonlinear

    • NoiseXterminator + a little concolution

    • CurvesTransformation to adjust black point/contrast

    • Clone stamp to remove a couple background artifacts

    • image saved as ‘NB’, to be combined later on in nonlinear processing

    RGB Linear:

    this is really just to have natural star colors

    • SpectroPhotometricColorCalibration

    • BlurXTerminator

    Really loving the star correction with its new AI v4 update

    • HSV Repair

    • StarXterminator to make a stars-only image

    • ArcsinhStretch + Histogram transformation to bring stars nonlinear

    Nonlinear processing:

    • Combined stretched Ha and Oiii images into a color image using ForaxX’s HOO palette:

    R = Ha

    G= ((Oiii*Ha)^~(Oiii*Ha))*Ha + ~((Oiii*Ha)^(Oiii*Ha))*Oiii

    Oiii

    • Background Neutralization

    • Shitloads of Curve Transformation to adjust lightness, saturation, contrast, hues, etc with various masks

    • LocalHistogramEqualization

    • Added in NB image from earlier per the advanced narrowband guide

      only difference from the pixelmath in the guide is that I added NB to the green and blue channels (0.6 and 0.9, respectively) instead of red

    • HistogramTransformation to adjust the black point

    • More curves

    • MLT for medium scale noise reduction in the squid

    • ColorSaturation to slightly desaturate the red nebulas

    • NoiseXterminator

    • Even more curves

    • 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

    (Jimmy is a processing wizard when it comes to writing up this independent starless processing stuff)

    mtf(.005,

    mtf(.995,Stars)+

    mtf(.995,Starless))

    • Guess what more curves

    • Another round of NoiseXterminator

    • MLT for some small scale chrominance noise reduction

    • Few more slight ColorSaturation adjustments

    • Resample to 60%

    • Annotation

  • lefty7283@lemmy.worldOPtopics@lemmy.world•The Wizard Nebula [OC]English
    5·
    7 months ago

    So this is my third time shooting NGC 7380 (previous pics were from 2018 and 2020). This time around I decided to go with a different false-color palette (exact details below) compared to my prior true color and Hubble palette pics. Captured over 4 nights in Nov/Dec, 2023 from a Bortle 9 zone.

    Places where I host my other images:

    Flickr | Instagram

    Equipment:

    • 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-120mc for guiding

    • Moonlite Autofocuser

    Acquisition: 12 hours 48minutes (Camera at unity gain, -15°C)

    • Ha - 33x360"

    • Oiii - 52x360"

    • Sii - 43x360"

    • Darks- 30

    • Flats- 30 per filter

    Capture Software:

    • Captured using N.I.N.A. and PHD2 for guiding and dithering.

    PixInsight processing:

    Preprocessing

    • BatchPreProcessing

    • StarAlignment

    • Blink

    • ImageIntegration per channel per panel

    • DrizzleIntegration (2x, Var β=1.5) per panel per channel

    • StarAlignment in mosaic mode to align the two panels, then GradientMergeMosaic to combine them

    Linear:

    • DynamicBackground Extraction

    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

    • BlurXTerminator

    • NoiseXterminator

    • Duplicated images, to be used later for stars only processing

    • STF applied via HistogramTransformation to bring nonlinear

    Stars processing:

    • Extracted stars-only pic using StarXterminator

    • Pixelmath to make color SHO --> RGB image

    • SpectroPhotometricColorCalibration (narrowband working mode)

    • ArcsinhStretch + HT to bring nonlinear

    • SCNR > invert > SCNR >invert to remove greens and magentas from stars

    • Stars only pic saved for later addition to starless pic

    Nonlinear:

    • StarX to remove all stars

    • PixelMath to create color image in OSH --> RGB palette

    • PixelMath to make a second image using Jimmy’s Royal Palette:

      R = 0.3*Oiii+0.7*(Oiii^~(0.7*Ha+0.3*Sii))^1.2

      G = ((Oiii*Ha)^~(Oiii*Ha))*Ha + ((Oiii*Ha)^(Oiii*Ha))*Sii

      B = 0.9*Sii+Ha-Oiii

    • PixelMath to blend OSH and Jimmy pics together 50:50

    • LRGBCombination using stretched Ha as luminance

    • shitloads of CurveTransformations to adjust hue, lightness, saturation, etc. (some with lum masks)

    • another round of NoiseXTerminator

    • Extract L --> LRGBCombination for chrominance noise reduction

    • LocalHistogramEqualization

    • More curves

    • MultiscaleLinearTransform

    • Relinearized narrowband and stars images to add in the stars only image

    “unstretched” both images with histogramtransformation midtones set to 0.9999

    pixelmath to just add those two images together

    histogramtransformation to un-relinearize them by setting midtones to 0.0001

    • Even more curves

    • Resample to 60%

    • annotation

  • lefty7283@lemmy.worldOPtopics@lemmy.world•NGC 7822 Nebula [OC]English
    4·
    7 months ago

    A few years ago I shot just the core of NGC7822, and I’ve decided to reshoot it as a 2 panel mosaic to get some of the outer structures. The whole nebula is actually pretty big in the sky (over 3 degrees!), but I did not want to deal with processing another 8+ panel mosaic to fit the whole thing.

    Captured over 23 nights from September through November, 2023 from a Bortle 9 zone.

    Places where I host my other images:

    Flickr | Instagram

    Equipment:

    • 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-120mc for guiding

    • Moonlite Autofocuser

    Acquisition: 51 hours 30 minutes (Camera at -15°C)

    • Left panel:

    • Ha - 54x360"

    • Oiii - 130x360"

    • Sii - 101x360"

    • Right Panel:

    • Ha - 46x360"

    • Oiii - 94x360"

    • Sii - 90x360"

    • Darks- 30

    • Flats- 30 per filter

    Capture Software:

    • Captured using N.I.N.A. and PHD2 for guiding and dithering.

    PixInsight processing:

    Preprocessing

    • BatchPreProcessing

    • StarAlignment

    • Blink

    • ImageIntegration per channel per panel

    • DrizzleIntegration (2x, Var β=1.5) per panel per channel

    • StarAlignment in mosaic mode to align the two panels, then GradientMergeMosaic to combine them

    Linear:

    • DynamicBackground Extraction

    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

    • BlurXTerminator

    • NoiseXterminator

    • STF applied via HistogramTransformation to bring nonlinear

    Nonlinear:

    • PixelMath to combine stretched narrowband masters into color image

    SHO --> RGB (classic Hubble Palette)

    • removed stars and processed stars-only image separately with invert>SCNR and curve adjustments, to be added to starless image later.

    • HistogramTransformations to adjust channel intensities

    • Invert > SCNR > Invert to remove magentas

    • CurveTransformations for slight hue adjustments

    • LRGBCombination using stretched Ha as luminance

    • shitloads of CurveTransformations to adjust hue, lightness, saturation, etc. (some with lum masks)

    • MLT chrominance noise reduction

    • NoiseXTerminator

    • LocalHistogramEqualization

    Two round of this: one at kernel radius 16 for the finer ‘feathery’ details and one at 512+ for larger structures

    • More curves

    • Relinearized narrowband and stars images to add in the stars only image

    “unstretched” both images with histogramtransformation midtones set to 0.9999

    pixelmath to just add those two images together

    histogramtransformation to un-relinearize them by setting midtones to 0.0001

    • ColorSaturation

    • Even more curves

    • Extract L > LRGBCombination for some chrominance noise reduction

    • Slight SCNR to remove some greens from the bright parts of the nebula

    • DynamicCrop to remove a few artifacts around the edge where the panels overlap

    • Resample to 60%

    • annotation

  • lefty7283@lemmy.worldOPtopics@lemmy.world•The Deer Lick Group and Stephan's Quintet [OC]English
    1·
    8 months ago

    The Deer Lick Group (right) is a group of galaxies with NGC 7331 in the foreground, and the galaxies surrounding it. NGC 7331 is approximately 40 million light years away, with the other Deer Lick members ~300 million light years behind it. Stephan’s Quintet (left) is a grouping of 5 galaxies. It was also one of the first targets photographed by the JWST

    Much like deerlick, one of them is in the foreground ~40 Mly away from us, and the other 4 are 210-340 Mly distant. These distant galaxies are interacting and will eventually merge together. Here is an annotated image showing more galaxies in the uncropped FOV. Captured on November 16th, 17th, and 18th, 2020 from a bortle 6 zone.

    Places where I host my other images:

    Flickr

    Equipment:

    • 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-120MC for guiding

    • Moonlite Autofocuser

    Acquisition: 12 hours 38 minutes (Camera at Unity Gain, -15°C)

    • Lum- 235x120"

    • Red- 48x120"

    • Green- 47x120

    • Blue- 49x120"

    • Darks- 30

    • Flats- 30 per filter

    Capture Software:

    • Captured using N.I.N.A. and PHD2 for guiding and dithering.

    PixInsight Processing:

    • BatchPreProcessing

    • SubframeSelector

    • StarAlignment

    • Blink

    • ImageIntegration

    • DrizzleIntegration (Luminance only)

    • DynamicCrop

    • DynamicBackgroundExtraction

    Luminance:

    • EZ Decon and Denoise (Luminance only)

    • ArcsinhStretch

    • HistogramTransformation

    RGB

    • StarAlign RGB stacks to Drizzled Lum

    • LinearFit to Green

    • ChannelCombintion

    • PhotometricColorCalibration

    • HSV Repair

    • ArcsinhStretch

    • HistogramTransformation

    • LRGBCombination with Lum

    Nonlinear:

    • Several CurveTransformations to adjust lightness, contrast, saturation, etc

    • ACDNR

    • LocalHistogramEqualization

    • More Curves

    • EZ Star Reduction

    • Resample to 60%

    • DynamicCrop

    • Annotation

  • lefty7283@lemmy.worldOPtopics@lemmy.world•IC 63 - The Ghost of Cassiopeia Nebula [OC]English
    3·
    8 months ago

    For those who don’t see the ghost

    Really glad how close I managed to get this to true color using just hydrogen and sulfur filters. My one complaint with this image is the halo around Gamma Cass present in both filters. Somehow my previous photo of Alnitak using an identical imaging train didn’t have it this extreme. The glow around the bright star isn’t nebulosity, but an artifact from the microlenses in the ASI1600 camera. Captured on December 8th, 14th, 22nd, and 26th, 2020 from a bortle 6 zone

    Places where I host my other images:

    Flickr | Instagram

    Equipment:

    • 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-120MC for guiding

    • Moonlite Autofocuser

    Acquisition: 18 hours 36 minutes (Camera at Unity Gain, -20°C)

    • Ha- 94x360"

    • Sii- 92x360

    • Darks- 30

    • Flats- 30 per filter

    Capture Software:

    • Captured using N.I.N.A. and PHD2 for guiding and dithering.

    PixInsight Processing:

    • BatchPreProcessing

    • StarAlignment

    • Blink

    • ImageIntegration

    • ImageIntegration to make a superluminance channel (just chucked every frame into a stack)

    • DrizzleIntegration per panel(2x, Var β=1.5)

    Linear:

    • DynamicCrop

    • DynamicBackgroundExtraction

    Ha and Sii Stacks

    • ChannelCombination to combine channels

    Red = Ha

    Green = Sii

    Blue = Sii

    • PhotometricColorCalibration

    • HSV Repair

    • ArcsinhStretch

    • HistogramTransformation

    • LRGBCombination with nonlinear superlum

    Superliminance

    • EZ Denoise

    • ArcsinhStretch

    • HistogramTransformation

    Nonlinear

    • CurveTransformations to adjust lightness, contrast, and saturation

    • ACDNR

    • LocalHistogramEqualization

    • HistogramTransformation to reduce black point

    • More Curves

    • EZ Star Reduction

    • DynamicCrop (lotta empty space on my original framing)

    • Resample to 70%

    • Annotation