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2024, November 2024 Charles Lillo 2024, November 2024 Charles Lillo

IC 2169 Dreyer's Nebula in LRGB

IC 2169, often called Dreyer’s Nebula, is a faint reflection nebula nestled within the lesser-known constellation of Monoceros, the Unicorn. This nebula is part of the larger Monoceros R2 molecular cloud complex, a rich region of star formation that stretches across a vast area. Dreyer’s Nebula reflects the light of young, hot stars embedded within the surrounding dark dust, creating a soft glow that varies from blue to subtle shades of gray due to scattered starlight—a characteristic feature of reflection nebulae. Interestingly, IC 2169 lies in close proximity to several other nebulous regions, making it a part of a fascinatingly complex structure in the night sky that requires dark skies and long exposures to fully reveal.

Captured from Perth, Western Australia, a location known for its excellent astronomical seeing conditions, this image benefits from the region's clear skies and minimal light pollution, offering an ideal view of this delicate nebula. Perth’s location in the Southern Hemisphere also provides a unique perspective of celestial objects that are not as easily observable from the Northern Hemisphere, making it a prime location for astrophotography. This nebula’s delicate structure and subtle coloring make it an enchanting subject for astrophotographers aiming to capture fine details in LRGB imaging.

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2024, November 2024 Charles Lillo 2024, November 2024 Charles Lillo

Caroline's Rose (NGC 7899)

Caroline's Rose (NGC 7789) is an open star cluster located in the constellation Cassiopeia, but it’s not as widely known as some other stellar groups. Discovered by astronomer Caroline Herschel in 1783, it contains approximately 1000 stars, most of which are around 1 to 2 billion years old, giving the cluster a distinctive yellowish hue due to its aging stars. What makes this cluster especially intriguing is the fact that it is one of the most densely populated open clusters known, with stars that are significantly more spread out than those in globular clusters.

A lesser-known fact is that the cluster is rich in white dwarf stars, which are remnants of once massive stars that have shed their outer layers and now shine with a faint, residual glow.

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2024, November 2024 Charles Lillo 2024, November 2024 Charles Lillo

Northern Lights over Vestrahorn

The breathtaking Vestrahorn mountain on Iceland's Stokksnes peninsula is the perfect stage for the Northern Lights, one of nature’s most magical phenomena. Here, the mountain's rugged profile is mirrored by a frozen, glassy surface, creating a double view of the aurora that sweeps across the sky.

The colors in the Northern Lights—green, pink, red, and sometimes even purple—are produced as solar particles collide with Earth's atmosphere. When these particles interact with oxygen at lower altitudes, a green glow appears, while rarer red hues result from higher-altitude oxygen interactions. Nitrogen, meanwhile, can give off blue and purple colors at various altitudes.

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2024, November 2024 Charles Lillo 2024, November 2024 Charles Lillo

Flaming star Nebula (IC 405), AURIGA

Captured from the Bortle 5 skies of Soutomaior, Spain, this image presents the Flaming Star Nebula (IC 405) in a vivid balance of narrowband and broadband (RGB) data collected over several nights. IC 405, located around 1,500 light-years away in the constellation Auriga, is both an emission and reflection nebula. It owes its striking red and blue hues to the young star AE Aurigae, which energizes the surrounding hydrogen gas to glow while also reflecting light off nearby dust. To enhance the fine details within its swirls and wisps, the image is processed to soften the overpowering H-alpha emissions, allowing a more nuanced portrait of the nebula’s structure. This approach reveals the intricate network of gas and dust that makes the Flaming Star Nebula a stunning feature of Auriga’s celestial landscape.

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2024, November 2024 Charles Lillo 2024, November 2024 Charles Lillo

SNR G132.7+01.3 (HB3)

SNR G132.7+1.3, known as HB3, stretches across a massive 1.5° x 2.0° in the sky as one of the largest supernova remnants in our galaxy. Despite its size, this remnant is faint in the OIII wavelength, demanding a dedicated 140 hours of exposure to bring out its delicate structure. Captured in LRGB-HOO, this image is our most ambitious project yet, completed in collaboration with the AAA team.

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2024, November 2024 Charles Lillo 2024, November 2024 Charles Lillo

NGC 602

Nestled 200,000 light-years away in the Small Magellanic Cloud, the young star cluster NGC 602 lights up the surrounding nebula N90 with its brilliant and energetic stars. Among them is the exceptionally hot O3 star Sk 183, one of the brightest stars fueling this luminous star-forming region. The intense radiation from these massive blue stars carves out cavities in the nebula, shaping swirling regions of ionized gas and dust.

Curiously, a faint, small structure resembling a planetary nebula also appears nearby, possibly identified as SMC-B Bru 2-165. This could hint at earlier stellar generations in this vibrant region, where new stars are born within rich molecular clouds.

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2024, November 2024 Charles Lillo 2024, November 2024 Charles Lillo

Jupiter

Captured during a period of exceptional seeing, this high-resolution image of Jupiter highlights remarkable details across the gas giant’s dynamic cloud tops. The area trailing the iconic Great Red Spot is notably turbulent, filled with intricate gaseous swirls and finely textured details. This turbulent region is emphasized by the planet's fast rotation and shifting atmospheric currents.

Using four derotated images, each compiled from 60-second video captures, the image preserves clarity across multiple frames, enabling a detailed look at Jupiter’s complex cloud structures. The temporary atmospheric stability allowed for this clear and vibrant view of Jupiter's most famous atmospheric features, showcasing both the Great Red Spot and the surrounding bands with excellent sharpness and depth.

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2024, November 2024 Charles Lillo 2024, November 2024 Charles Lillo

Comet C/2023 A3 (Tsuchinshan-ATLAS) – Inner Structures

aptured with remarkable clarity, this image of comet C/2023 A3 (Tsuchinshan-ATLAS) reveals an unobstructed view of its intricate inner structures, free from the distraction of background stars. This high-resolution capture brings forth the delicate textures within the comet's gas and dust tails, showing dynamic formations shaped by solar radiation and the comet's own rotation. Near the nucleus, subtle signs of activity hint at ongoing processes fueling the comet's evolution. The comet’s seemingly suspended appearance against a dark backdrop not only offers astronomers an invaluable perspective on its structure but also provides insights into the mechanisms of cometary disintegration and material dispersal throughout the Solar System.

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