https://www.sciencedowneast.com/zenphoto Sat, 08 Aug 2026 05:30:33 -0300 Sat, 08 Aug 2026 05:30:33 -0300 http://blogs.law.harvard.edu/tech/rss Zenphoto RSS Generator https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_S30_78x60_ADBE_MAS.jpg Click on the image to view it at full resolution, then click again for actual size.

The Horsehead Nebula (Barnard 33) is a dark nebula silhouetted against the glowing red emission nebula IC 434 in the constellation Orion, just south of Alnitak (Zeta Orionis), the easternmost star in Orion's Belt. Part of the vast Orion Molecular Cloud Complex, it sits at a distance of roughly 1,300-1,500 light-years, with the dense dust column forming the “head” shape spanning only a few light-years. IC 434 itself is ionized by radiation from nearby hot stars, producing the strong Hα glow that makes the horse-shaped silhouette visible. This is a classic narrowband target: Hα brings out the background nebula's red emission dramatically, while the dark horsehead shape and neighboring Flame Nebula (NGC 2024) near Alnitak make this one of the most recognizable and frequently imaged regions in the sky.

[Source: Wikipedia, en.wikipedia.org/wiki/Horsehead_Nebula]

Moon Phase	Full Moon
Camera	Seestar S30 Pro (4K Sony IMX585 sensor)
Optics	160 mm focal length, f/5.3, 30 mm aperture (APO quadruplet)
Date	2026-03-04
PixInsight Processing	Drizzle Integration (x2) Background Neutralization (x2) Automatic Background Extraction (x2) Dynamic Background Extraction (x2) Spectrophotometric Color Calibration (x2) NoiseXTerminator (AI denoise) (x2) Multiscale Adaptive Stretch (x2) Fast Integration

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_S30_78x60_ADBE_MAS.jpg Wed, 04 Mar 2026 00:00:00 -0400 https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_integration_ADBE_GHS.xisf.jpg Click on the image to view it at full resolution, then click again for actual size.

The Horsehead Nebula (Barnard 33) is a dark nebula silhouetted against the glowing red emission nebula IC 434 in the constellation Orion, just south of Alnitak (Zeta Orionis), the easternmost star in Orion's Belt. Part of the vast Orion Molecular Cloud Complex, it sits at a distance of roughly 1,300-1,500 light-years, with the dense dust column forming the “head” shape spanning only a few light-years. IC 434 itself is ionized by radiation from nearby hot stars, producing the strong Hα glow that makes the horse-shaped silhouette visible. This is a classic narrowband target: Hα brings out the background nebula's red emission dramatically, while the dark horsehead shape and neighboring Flame Nebula (NGC 2024) near Alnitak make this one of the most recognizable and frequently imaged regions in the sky.

[Source: Wikipedia, en.wikipedia.org/wiki/Horsehead_Nebula]

Moon Phase	Full Moon
Camera	Seestar S30 Pro (4K Sony IMX585 sensor)
Optics	160 mm focal length, f/5.3, 30 mm aperture (APO quadruplet)
Date	2026-03-04
PixInsight Processing	Fast Integration Image Integration Background Neutralization Automatic Background Extraction Dynamic Background Extraction Spectrophotometric Color Calibration NoiseXTerminator (AI denoise) StarXTerminator (star removal) Generalized Hyperbolic Stretch (x10) PixelMath Curves Transformation HDR Multiscale Transform

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_integration_ADBE_GHS.xisf.jpg Wed, 04 Mar 2026 00:00:00 -0400 https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_integration_ADBE_GHS_2.jpg Click on the image to view it at full resolution, then click again for actual size.

The Horsehead Nebula (Barnard 33) is a dark nebula silhouetted against the glowing red emission nebula IC 434 in the constellation Orion, just south of Alnitak (Zeta Orionis), the easternmost star in Orion's Belt. Part of the vast Orion Molecular Cloud Complex, it sits at a distance of roughly 1,300-1,500 light-years, with the dense dust column forming the “head” shape spanning only a few light-years. IC 434 itself is ionized by radiation from nearby hot stars, producing the strong Hα glow that makes the horse-shaped silhouette visible. This is a classic narrowband target: Hα brings out the background nebula's red emission dramatically, while the dark...

Moon Phase	Full Moon
Camera	Seestar S30 Pro (4K Sony IMX585 sensor)
Optics	160 mm focal length, f/5.3, 30 mm aperture (APO quadruplet)
Date	2026-03-04
PixInsight Processing	Drizzle Integration (x2) Background Neutralization (x2) Automatic Background Extraction (x2) Dynamic Background Extraction (x2) Spectrophotometric Color Calibration (x2) NoiseXTerminator (AI denoise) (x3) Multiscale Adaptive Stretch HDR Multiscale Transform Curves Transformation (x3) Fast Integration StarXTerminator (star removal) Generalized Hyperbolic Stretch (x8) PixelMath Multiscale Median Transform

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_integration_ADBE_GHS_2.jpg Wed, 04 Mar 2026 00:00:00 -0400 https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=horsehead.jpg Click on the image to view it at full resolution, then click again for actual size.

The Horsehead Nebula (Barnard 33) is a dark nebula silhouetted against the glowing red emission nebula IC 434 in the constellation Orion, just south of Alnitak (Zeta Orionis), the easternmost star in Orion's Belt. Part of the vast Orion Molecular Cloud Complex, it sits at a distance of roughly 1,300-1,500 light-years, with the dense dust column forming the “head” shape spanning only a few light-years. IC 434 itself is ionized by radiation from nearby hot stars, producing the strong Hα glow that makes the horse-shaped silhouette visible. This is a classic narrowband target: Hα brings out the background nebula's red emission dramatically, while the dark horsehead shape and neighboring Flame Nebula (NGC 2024) near Alnitak make this one of the most recognizable and frequently imaged regions in the sky.

[Source: Wikipedia, en.wikipedia.org/wiki/Horsehead_Nebula]

Total image time was 17 minutes.

Moon Phase	First Quarter
Camera	Seestar S30
Optics	150 mm focal length, f/5, 30 mm aperture (APO triplet)
Filter	LP
Binning	1x1
Date	2025-12-28
PixInsight Processing	Image Integration BlurXTerminator (AI deconvolution) Spectrophotometric Color Calibration (x2) Multiscale Adaptive Stretch NoiseXTerminator (AI denoise) (x2) HDR Multiscale Transform (x2) Curves Transformation Fast Rotation

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=horsehead.jpg Sun, 28 Dec 2025 00:00:00 -0400 https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_Peter_ADBE_MAS.jpg Click on the image to view it at full resolution, then click again for actual size.

The Horsehead Nebula (Barnard 33) is a dark nebula silhouetted against the glowing red emission nebula IC 434 in the constellation Orion, just south of Alnitak (Zeta Orionis), the easternmost star in Orion's Belt. Part of the vast Orion Molecular Cloud Complex, it sits at a distance of roughly 1,300-1,500 light-years, with the dense dust column forming the “head” shape spanning only a few light-years. IC 434 itself is ionized by radiation from nearby hot stars, producing the strong Hα glow that makes the horse-shaped silhouette visible. This is a classic narrowband target: Hα brings out the background nebula's red emission dramatically, while the dark...

Moon Phase	Full Moon
Camera	Seestar S30 Pro (4K Sony IMX585 sensor)
Optics	160 mm focal length, f/5.3, 30 mm aperture (APO quadruplet)
Date	2026-03-04
PixInsight Processing	Image Integration Background Neutralization (x2) Automatic Background Extraction (x2) Dynamic Background Extraction (x2) Spectrophotometric Color Calibration (x2) NoiseXTerminator (AI denoise) (x2) StarXTerminator (star removal) Generalized Hyperbolic Stretch (x10) PixelMath Curves Transformation (x2) HDR Multiscale Transform (x2) Fast Integration Drizzle Integration Multiscale Adaptive Stretch

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_Peter_ADBE_MAS.jpg Wed, 04 Mar 2026 00:00:00 -0400 https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_139x60_ADBE_MAS.jpg Click on the image to view it at full resolution, then click again for actual size.

The Horsehead Nebula (Barnard 33) is a dark nebula silhouetted against the glowing red emission nebula IC 434 in the constellation Orion, just south of Alnitak (Zeta Orionis), the easternmost star in Orion's Belt. Part of the vast Orion Molecular Cloud Complex, it sits at a distance of roughly 1,300-1,500 light-years, with the dense dust column forming the “head” shape spanning only a few light-years. IC 434 itself is ionized by radiation from nearby hot stars, producing the strong Hα glow that makes the horse-shaped silhouette visible. This is a classic narrowband target: Hα brings out the background nebula's red emission dramatically, while the dark horsehead shape and neighboring Flame Nebula (NGC 2024) near Alnitak make this one of the most recognizable and frequently imaged regions in the sky.

[Source: Wikipedia, en.wikipedia.org/wiki/Horsehead_Nebula]

Moon Phase	Full Moon
Camera	Seestar S30 Pro (4K Sony IMX585 sensor)
Optics	160 mm focal length, f/5.3, 30 mm aperture (APO quadruplet)
Date	2026-03-04
PixInsight Processing	Drizzle Integration (x2) Background Neutralization (x2) Automatic Background Extraction (x2) Dynamic Background Extraction (x2) Spectrophotometric Color Calibration (x2) NoiseXTerminator (AI denoise) (x2) Multiscale Adaptive Stretch (x2) HDR Multiscale Transform Curves Transformation Fast Integration

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_139x60_ADBE_MAS.jpg Wed, 04 Mar 2026 00:00:00 -0400 https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=masterLight_BIN-1_1080x1920_EXPOSURE-10.00s_FILTER-LP_combined_RGB_%281%29.jpg Click on the image to view it at full resolution, then click again for actual size.

The Horsehead Nebula (Barnard 33) is a dark nebula silhouetted against the glowing red emission nebula IC 434 in the constellation Orion, just south of Alnitak (Zeta Orionis), the easternmost star in Orion's Belt. Part of the vast Orion Molecular Cloud Complex, it sits at a distance of roughly 1,300-1,500 light-years, with the dense dust column forming the “head” shape spanning only a few light-years. IC 434 itself is ionized by radiation from nearby hot stars, producing the strong Hα glow that makes the horse-shaped silhouette visible. This is a classic narrowband target: Hα brings out the background nebula's red emission dramatically, while the dark horsehead shape and neighboring Flame Nebula (NGC 2024) near Alnitak make this one of the most recognizable and frequently imaged regions in the sky.

[Source: Wikipedia, en.wikipedia.org/wiki/Horsehead_Nebula]

Total image time was 40 minutes.

Moon Phase	First Quarter
Camera	Seestar S30
Optics	150 mm focal length, f/5, 30 mm aperture (APO triplet)
Filter	LP
Binning	1x1
Date	2025-12-28
PixInsight Processing	Image Integration (x3) Channel Combination Fast Rotation BlurXTerminator (AI deconvolution) GraXpert (gradient removal) Spectrophotometric Color Calibration NoiseXTerminator (AI denoise) (x2) StarXTerminator (star removal) Generalized Hyperbolic Stretch (x5) PixelMath Curves Transformation

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=masterLight_BIN-1_1080x1920_EXPOSURE-10.00s_FILTER-LP_combined_RGB_%281%29.jpg Sun, 28 Dec 2025 00:00:00 -0400 https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_integration_ADBE_MAS.jpg Click on the image to view it at full resolution, then click again for actual size.

The Horsehead Nebula (Barnard 33) is a dark nebula silhouetted against the glowing red emission nebula IC 434 in the constellation Orion, just south of Alnitak (Zeta Orionis), the easternmost star in Orion's Belt. Part of the vast Orion Molecular Cloud Complex, it sits at a distance of roughly 1,300-1,500 light-years, with the dense dust column forming the “head” shape spanning only a few light-years. IC 434 itself is ionized by radiation from nearby hot stars, producing the strong Hα glow that makes the horse-shaped silhouette visible. This is a classic narrowband target: Hα brings out the background nebula's red emission dramatically, while the dark horsehead shape and neighboring Flame Nebula (NGC 2024) near Alnitak make this one of the most recognizable and frequently imaged regions in the sky.

[Source: Wikipedia, en.wikipedia.org/wiki/Horsehead_Nebula]

Moon Phase	Full Moon
Camera	Seestar S30 Pro (4K Sony IMX585 sensor)
Optics	160 mm focal length, f/5.3, 30 mm aperture (APO quadruplet)
Date	2026-03-04
PixInsight Processing	Fast Integration Image Integration Background Neutralization Automatic Background Extraction Dynamic Background Extraction Spectrophotometric Color Calibration Multiscale Adaptive Stretch HDR Multiscale Transform NoiseXTerminator (AI denoise) Curves Transformation

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_integration_ADBE_MAS.jpg Wed, 04 Mar 2026 00:00:00 -0400 https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_S50_96x10_ADBE_MAS.jpg Click on the image to view it at full resolution, then click again for actual size.

The Horsehead Nebula (Barnard 33) is a dark nebula silhouetted against the glowing red emission nebula IC 434 in the constellation Orion, just south of Alnitak (Zeta Orionis), the easternmost star in Orion's Belt. Part of the vast Orion Molecular Cloud Complex, it sits at a distance of roughly 1,300-1,500 light-years, with the dense dust column forming the “head” shape spanning only a few light-years. IC 434 itself is ionized by radiation from nearby hot stars, producing the strong Hα glow that makes the horse-shaped silhouette visible. This is a classic narrowband target: Hα brings out the background nebula's red emission dramatically, while the dark horsehead shape and neighboring Flame Nebula (NGC 2024) near Alnitak make this one of the most recognizable and frequently imaged regions in the sky.

[Source: Wikipedia, en.wikipedia.org/wiki/Horsehead_Nebula]

Moon Phase	Full Moon
Camera	Seestar S30 Pro (4K Sony IMX585 sensor)
Optics	160 mm focal length, f/5.3, 30 mm aperture (APO quadruplet)
Date	2026-03-04
PixInsight Processing	Drizzle Integration (x2) Background Neutralization (x2) Automatic Background Extraction (x2) Dynamic Background Extraction (x2) Spectrophotometric Color Calibration (x2) NoiseXTerminator (AI denoise) (x2) Multiscale Adaptive Stretch (x3) Fast Integration

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=IC_434_S50_96x10_ADBE_MAS.jpg Wed, 04 Mar 2026 00:00:00 -0400 https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=masterLight_BIN-1_1080x1920_EXPOSURE-10.00s_FILTER-LP_combined_RGB_%282%29.jpg Click on the image to view it at full resolution, then click again for actual size.

The Horsehead Nebula (Barnard 33) is a dark nebula silhouetted against the glowing red emission nebula IC 434 in the constellation Orion, just south of Alnitak (Zeta Orionis), the easternmost star in Orion's Belt. Part of the vast Orion Molecular Cloud Complex, it sits at a distance of roughly 1,300-1,500 light-years, with the dense dust column forming the “head” shape spanning only a few light-years. IC 434 itself is ionized by radiation from nearby hot stars, producing the strong Hα glow that makes the horse-shaped silhouette visible. This is a classic narrowband target: Hα brings out the background nebula's red emission dramatically, while the dark horsehead shape and neighboring Flame Nebula (NGC 2024) near Alnitak make this one of the most recognizable and frequently imaged regions in the sky.

[Source: Wikipedia, en.wikipedia.org/wiki/Horsehead_Nebula]

Total image time was 40 minutes.

Moon Phase	First Quarter
Camera	Seestar S30
Optics	150 mm focal length, f/5, 30 mm aperture (APO triplet)
Filter	LP
Binning	1x1
Date	2025-12-28
PixInsight Processing	Image Integration (x3) Channel Combination Fast Rotation BlurXTerminator (AI deconvolution) GraXpert (gradient removal) Spectrophotometric Color Calibration NoiseXTerminator (AI denoise) (x2) StarXTerminator (star removal) Generalized Hyperbolic Stretch (x5) PixelMath Curves Transformation

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Nebulae/NGC-2023-Horsehead-Nebula&image=masterLight_BIN-1_1080x1920_EXPOSURE-10.00s_FILTER-LP_combined_RGB_%282%29.jpg Sun, 28 Dec 2025 00:00:00 -0400