this post was submitted on 06 Aug 2023
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Astrophotography

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[–] lefty7283 2 points 2 years ago* (last edited 2 years ago)

Decided to go after something more obscure since I've got terrible horizons and I've already shot a lot of the brighter things in this part of the sky. There's also a number of other galaxies in the uncropped background. Captured on July 22-26th, 2023 from my bortle 8 apartment balcony.

Places where I host my other images:

Instagram | 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: 13 hours 1 minutes (Camera at half Unity Gain, -15°C)

  • L- 374x60"

  • R - 150x60"

  • G - 151x60"

  • B - 148x60"

  • 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

Luminance Linear:

  • DynamicCrop

  • DynamicBackgroundExtraction

  • BlurXTerminator

  • NoiseXterminator

  • ArcsinhStretch+HistogramTransformation to bring nonlinear

RGB Linear:

  • DynamicCrop

  • DynamicBackgroundExtraction

  • ChannelCombination

  • SpectrophotometricColorCalibration

  • HSV Repair

  • DeepSNR

  • Slight SCNR green

  • AcrsinhStretch + HistogramTransformation to stretch nonlinear

Nonlinear:

  • added stretch luminance to stretched RGB via LRGBCombination

  • DeepSNR

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

  • DynamicCrop again

  • annotation