Shot on a Sony a7 III with a 20mm f/1.8 lens. This is a single-shot exposure at ISO 3200, 20 seconds. I pushed the white balance toward the cooler spectrum to enhance the teal highlights in the galactic core. The high dynamic range of the sensor allowed me to keep the rock formations as pure black silhouettes while retaining the faint, wispy dust lanes of the Milky Way.
Nikon D850 (Full-Frame DSLR) 24mm f/1.4 Prime Lens
Sky: 15 tracked images × 60s, blended for noise reduction (ISO 1600)
Foreground: 1 x 30s exposure to capture the volcanic glow (ISO 800)
Mount: iOptron SkyGuider Pro
Software: Adobe Lightroom for color grading, Sequator for stacking
QHY268M (Photometric Mono CMOS, APS-C)
Optics: William Optics RedCat 51 II
Acquisition: 14 Hours total (7h Ha, 7h OIII)
Mount: Sky-Watcher EQ6-R Pro
Guiding: QHY5III178M on a 30mm Guide Scope
Sensor: Nikon D850 (Full-Frame CMOS, ISO 1600)
Exposure: 360 min total integration (unfiltered)
Target: NGC 1579, Constellation Perseus
Coordinates: RA 04h 30m | Dec +35° 16′
Calibration: Dark/Flat/Bias frames applied in PixInsight
Observation of the Northern Trifid Nebula (NGC 1579) at 2,400 light-years. The data reveals intense light scattering from massive embedded stars. The reddish hue is a result of interstellar dust filtering the light, shifting the visible spectrum toward longer wavelengths—a process identical to Rayleigh scattering during a terrestrial sunset. The image highlights high-density dust lanes bisecting the central ionization zone. To resolve these gradients, I utilized the high-resolution sensor of the Nikon D850, which provided the necessary bit depth to distinguish the dark nebulae from the background sky glow.
This shot was a labor of love using a Sony A7R IV paired with a Sony FE 90mm f/2.8 Macro G OSS lens, which provided the perfect sharpness for these dense star fields. I mounted the rig on a Sky-Watcher Star Adventurer GTi to maintain precise tracking throughout the session. The final image is a stack of 90 frames, each with a 45-second exposure at f/2.8 and ISO 1600. I handled the initial processing in PixInsight to manage the complex gradients and then used Photoshop for final color balancing, specifically focusing on the rich magentas and deep oranges of the emission nebulae.