this post was submitted on 01 Apr 2024
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Astrophotography

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Messier 40 (live.staticflickr.com)
submitted 8 months ago by lefty7283 to c/astrophotography
 
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[–] lefty7283 2 points 8 months ago (1 children)

Yes, this is an actual Messier object. These two stars are by far the most awe-inspiring, and sexy objects in space.

Captured on April 25th, 2021 from a Bortle 6 zone.

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: 2 hours 44 minutes (Camera at Unity Gain, -15°C)

  • Lum - 128x120"

  • Red - 18x120"

  • Green - 18x120"

  • Blue - 18x120"

  • 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

  • DynamicCrop

  • AutomaticBackgroundExtraction

Luminance:

  • EZ Denoise

  • ArcsinhStretch + histogramtransformation to bring nonlinear

RGB:

  • ChannelCombinaiton to combine monochrome R, G, B stacks into color image

  • PhotometricColorCalibration

  • Slight SCNR

  • HSV Repair

  • ArcsinhStretch + histogramtransformation to bring nonlinear

Nonlinear:

  • LRGBCombination with stretched L as luminance

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

  • ACDNR

  • EZ StarReduction

  • NoiseGenerator to add noise back into star reduced areas

  • Final Curves

  • Annotation

[–] [email protected] 2 points 8 months ago* (last edited 8 months ago)

My life will never be the same. 🤯

[–] teft 1 points 8 months ago (1 children)

M40 was a mistake actually. Messier was looking for a previously reported nebula in the area and only saw this optical double. He marked it as M40 anyways.

[–] Balthazar 2 points 8 months ago (1 children)

My understanding is that all of Messier's catalogue are 'mistakes': he was looking for comets, and making notes of things that weren't but might be mistaken for comets.

[–] teft 3 points 8 months ago* (last edited 8 months ago)

The name of his catalog is: Catalogue of Nebulae and Star Clusters

The Messier catalog was all the things that weren’t the comets that he was looking for. By mistake I meant that M40 isn’t a star cluster or nebula yet Messier added it anyways.