[-] lefty7283@lemmy.world 3 points 3 hours ago

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.

[-] lefty7283@lemmy.world 3 points 2 days ago

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:

Flickr | Pixelfed


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: 8 hours 30 minutes (Camera at unity gain, -15°C)

  • L - 68x180"

  • R - 34x180"

  • G - 34x180"

  • B - 34x180"

  • 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

  • Multiscale Gradient Correction with MARS Project data

Luminance linear:

  • BlurXterminator

  • StarXterminator to completely remove stars (extracted stars processed separately)

  • ArcsinhStretch + HistogramTransformation to stretch nonlinear

RGB Linear:

  • Channelcombination to make color image from RGB stacks

  • SpectrophotometricColorCalibration

  • BlurXTerminator

  • StarX to remove stars (to be used for star addition later)

  • HSV Repair

  • ArcsinhStretch + HistogramTransformation to stretch nonlinear

  • Slight curves saturation boost and histogram adjustments

Stars only image:

  • BlurXterminator for discortion correction and some mild star reduction

  • ArcsinhStretch + HistogramTransformation to stretch nonlinear (less aggressive stretch)

  • Slight curve adjustments

Nonlinear Processing

  • LRGBCombination to combine stretched RGB and L images

  • DeepSNR Noise reduction

  • Shitloads of curve transformations to adjust luminance, contrast, saturation, etc

  • More curves

  • NoiseXterminator for small scale chrominance noise reduction

  • LocalHistogramEqualization

  • 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))

  • NoiseXTerminator for some small scale chrominance noise reduction

  • Resample to 80%

  • DynamicCrop in on just the galaxy

  • Annotation

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RIP ESM (thelemmy.club)
[-] lefty7283@lemmy.world 32 points 2 weeks ago

update they posted earthrise too

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submitted 2 weeks ago by lefty7283@lemmy.world to c/space@mander.xyz

Bonus eclipse photo! More pics are being uploaded here: https://images.nasa.gov/

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NGC 2403 in HaLRGB (thelemmy.club)
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ULA L (thelemmy.club)
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submitted 2 months ago* (last edited 2 months ago) by lefty7283@lemmy.world to c/mealtimevideos@lemmy.cafe
[-] lefty7283@lemmy.world 67 points 3 months ago

There’s a Gemini logo in the bottom corner

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submitted 4 months ago by lefty7283@lemmy.world to c/vrchat@lemmy.world

Honestly impressed with the production value on this. Looking forward to more episodes!

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WR-134 (thelemmy.club)
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M46 and M47 Clusters (thelemmy.club)
submitted 4 months ago* (last edited 4 months ago) by lefty7283@lemmy.world to c/astrophotography@lemmy.world
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Christmas sweater (lemmy.world)
submitted 4 months ago by lefty7283@lemmy.world to c/cat@lemmy.world
[-] lefty7283@lemmy.world 29 points 5 months ago

I had like 5 seconds of panic because there was a gray spot in my vision after I accidentally looked at a baileys bead completely unfiltered through my telescope the second the eclipse ended. Turns out I just had a smudge on my glasses :P

[-] lefty7283@lemmy.world 32 points 7 months ago

Opossums have 13 nipples

[-] lefty7283@lemmy.world 29 points 9 months ago* (last edited 9 months ago)

easy explanation easy explanation

[-] lefty7283@lemmy.world 46 points 9 months ago

It’s the fun criss cross your nerves do before they go into your arm, and is the bane of first year med students everywhere

[-] lefty7283@lemmy.world 31 points 1 year ago

Not to self promote my own community too much, but !astrophotography@lemmy.world if you wanna see amateur photos of space

[-] lefty7283@lemmy.world 68 points 2 years ago

Bye, Bob :-(

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lefty7283

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