Skip Navigation
Posts
52
Comments
114
Joined
2 yr. ago

Little Caprice

  • Permanently Deleted

  • I’m left handed

  • I really hope they have some cameras on em

  • MealtimeVideos Cafe @lemmy.cafe
    lefty7283 @lemmy.world

    Algorithms are breaking how we think | Technology Connections

  • Supposedly the show has had a 7 season storyline planned from the start

  • VRChat @lemmy.world
    lefty7283 @lemmy.world

    Had a phenomenal time at Club Ancients last night!

    Belly!

  • Full of soup

  • Had a previously banned user from a discord I moderate join back months later with my wife’s name as their username and a photo of her as the pfp

  • smoke weed, drink, jerk off, and play vrchat!

  • Alternatively spend New Year’s Eve with friends in vrchat, drinking beer from your fridge, and having your bed only 20 feet away in the next room

  • Go for it

  • politics @lemmy.world
    lefty7283 @lemmy.world

    Former U.S. President Jimmy Carter, 100, dies

  • So technically 32 Cygni is just the bright star in the pic, and the rest of it is just hydrogen gas floating around in space. The constellation Cygnus has a ton of this hydrogen-alpha gas floating around, and I kinda just pointed at a semi-random spot in the constellation to get a pic. Although this was taken with an Ha filter, the stars are true color RGB, and I mapped the Ha channel to red so it closely resembles the actual color of hydrogen-alpha. Also for those curious here is a starless version that better shows the faint nebulosity/structures. Also pls ignore the crunchiness around 32 Cyg itself, it's an artifact of my camera's microlensing + the star removal program I use. Captured over like a dozen nights in December 2024 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: 29 hours 18 minutes (Camera at -15°C), unity gain

    • Ha - 161x600"
    • R - 51x60"
    • G - 59x60"
    • B - 48x60"
    • 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
    • StarXterminator to completely remove stars from each the image
    • HistogramTransformation to stretch nonlinear (calling this the Ha image now)

    Broadband/RGB linear:

    • ChannelCombination to make color image from R G and B stacks
    • StarX (correct only)
    • SpectrophotometricColorCalibration

    (duplicated image at this point, to be used for stars only processing later)

    • StarX to completely remove stars (at this point it's just background, with a little bit of signal in the R channel)
    • Blended unstretched Ha image into the red (and a little bit of the blue channel) with this pixelmath:

      R = $T+B(Ha- med(Ha))

      G = $T

      B = $T+B0.2(Ha- med(Ha))

      honestly can't remember what I used for the B constant, but the default is 2 in my pixelmath ¯(ツ)_/¯

    • HistogramTransformation to stretch nonlinear (calling this the Starless image now)

    Stars only processing:

    • HSV repair to fix blown out star cores
    • StarXterminator to generate an image containing only the stars (without any background)
    • ArcsinhStretch + Histogramtransformation to stretch nonlinear (Calling this the Stars image now)

    Nonlinear:

    • LRGBCombination to add the stretched Ha image to the stretched Starless image as a luminance layer
    • NoiseXterminator
    • Background neutralization
    • Several curve transformations to adjust lightness, contrast, saturation, color balance, etc
    • LocalHistogramEqualization
    • Another round of noiseX
    • Pixelmath to add in the stretched RGB Stars 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))

    • few more curve adjustments
    • FastRotation 180 degrees (pic was originally upside down)
    • DynamicCrop again (just a little bit)
    • Resample to 60%
    • Annotation
  • pics @lemmy.world
    lefty7283 @lemmy.world

    32 Cygni

  • PSVR 2 headset has a haptic thing in the forehead

  • One I used to run, /r/astrophotogramemes, is still private. Had about 1k subs before the protests. On /r/astrophotography we basically left it unmoderated for almost a year before new mods came in

  • I decided to do a deep dive into just the core of the Heart Nebula itself. Mellotte 15 is the name for the bright structure in the image, but the rest of the nebula itself is pretty extensive, and features the nearby soul nebula. IMO the uncropped heart nebula looks more like a chode with huge balls, but I can kinda see where it got it's heart name.... Captured over 8 nights in November 2024 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: 29 hours 50 minutes (Camera at -15°C), unity gain

    • Ha - 58x600"
    • Oiii - 62x600"
    • Sii - 59x600"
    • 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
    • made SHO image and extracted stars to be processed separately
    • StarXterminator to completely remove stars from each Ha, Oiii, and Sii image
    • HistogramTransformation to stretch nonlinear

    Stars only image:

    • SpectrophotometricColorCalibration (narrowband working mode)
    • HSV repair
    • arcsinhstretch
    • scnr > invert > scnr > invert to remove greens and magentas
    • HistogramTransformation
    • (combined with starless pic later on)

    Nonlinear:

    • PixelMath to combine monochrome Ha Oiii and Sii images into a color image with SHO --> RGB, respectively
    • HistogramTransformation to adjust red green and blue color channels separately (basically stretched R and B, and toned the G down some)
    • LRGBCombination using stretched Ha as luminance
    • DeepSNR
    • Shitloads of Curve Transformations to adjust lightness, hues, contrast, saturation, etc
    • Clone stamp to remove one weird small blue speck near the core of the nebula (might've just clipped the colors a little too much in the histogram adjustments above^)
    • LocalHistogramEqualization (two rounds of this. one at kernel radius 16 for small scale detail, and one at 500 for large structures)
    • More curves
    • DarkStructureEnhance script (0.15 amount)
    • Pixelmath to add in the stretched RGB 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))

    • some more curves
    • One more round of noiseX for small scale noise reduction
    • DynamicCrop in on just the core region
    • Resample to 80%
    • Annotation
  • pics @lemmy.world
    lefty7283 @lemmy.world

    The Core of the Heart Nebula

    All Orange Cats Share One Brain Cell @lemmy.world
    lefty7283 @lemmy.world

    He has awoken

    Permanently Deleted

  • Yea I fuck**g hate it

  • Still shooting in Cygnus...

    Though I think IC1318/γ Cyg can be used to describe most of the nebulosity around the star Sadr, stellarium has it directly over the bright nebula in this image. Overall I'd consider it an improvement over my last go at it back in 2020. Captured over 12 nights from Oct-Nov 2024 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: 25 hours 40 minutes (Camera at -15°C), unity gain

    • Ha - 50x600"
    • Oiii - 57x600"
    • Sii - 47x600"
    • 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
    • made SHO image and extracted stars to be processed separately
    • StarXterminator to completely remove stars from each Ha, Oiii, and Sii image
    • HistogramTransformation to stretch nonlinear

    Stars only image:

    • SpectrophotometricColorCalibration (narrowband working mode)
    • HSV repair
    • arcsinhstretch
    • scnr > invert > scnr > invert to remove greens and magentas
    • HistogramTransformation
    • (combined with starless pic later on)

    Nonlinear:

    • PixelMath to combine monochrome Ha Oiii and Sii images into a color image with SHO --> RGB, respectively
    • slight SCNR (bright areas protected with Ha mask)
    • Some curves to adjust colors
    • LRGBCombination using stretched Ha as luminance (accidentally left that Ha mask on from earlier so it applied more to the bright parts, and honestly turned out nicer than applying the Ha luminance to the entire image)
    • Shitloads of Curve Transformations to adjust lightness, hues, contrast, saturation, etc
    • DeepSNR
    • MLT for small scale chrominance noise reduction
    • DarkStructureEnhance script
    • LocalHistogramEqualization
    • more curves
    • invert > slight scnr (masked) > invert to remove some background magentas
    • even more curves
    • Pixelmath to add in the stretched RGB 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))

    • Resample to 65%
    • Annotation
  • pics @lemmy.world
    lefty7283 @lemmy.world

    The Gamma Cygni Nebula

    cats @lemmy.world
    lefty7283 @lemmy.world

    I envy Mildew on cold mornings

    pics @lemmy.world
    lefty7283 @lemmy.world

    Nebula near LBN 325

    SpaceflightMemes @sh.itjust.works
    lefty7283 @lemmy.world

    New coronagraph who dis?

    cats @lemmy.world
    lefty7283 @lemmy.world

    Mildew is a little scrungy today

    pics @lemmy.world
    lefty7283 @lemmy.world

    NGC 4490 - The Cocoon Galaxy

    [Dormant] moved to !space@mander.xyz @lemmy.world
    lefty7283 @lemmy.world

    NASA deploys 80 square meter ACS3 solar sail

    Hopefully it'll be visible to us on the ground! https://heavens-above.com/PassSummary.aspx?satid=59588

    pics @lemmy.world
    lefty7283 @lemmy.world

    M92 Globular Cluster

    SpaceflightMemes @sh.itjust.works
    lefty7283 @lemmy.world

    What a week!

    pics @lemmy.world
    lefty7283 @lemmy.world

    Sunspots - 2024.06.07

    SpaceX @sh.itjust.works
    lefty7283 @lemmy.world

    NASA Selects SpaceX to develop the International Space Station US Deorbit Vehicle

    pics @lemmy.world
    lefty7283 @lemmy.world

    Jones-Emberson 1 - The Headphones Nebula

    All Orange Cats Share One Brain Cell @lemmy.world
    lefty7283 @lemmy.world

    Local orange shocked to discover that water is in fact, wet

    pics @lemmy.world
    lefty7283 @lemmy.world

    Sh2-64 and surroundings