M33 Triangulum Galaxy: The Eternal Spiral
Thomas Wang
Award: Top 100
School: shady side academy
Teacher: joseph martens
Category: Natural
Photo #19252
M33 Triangulum Galaxy: The Eternal Spiral
As a lifelong sci-fi fan, I wasn't satisfied with just watching Interstellar; I wanted a glimpse of the universe's secrets – to observe elegant galaxies from telescopes instead of TVs. To seek answers, I arrived at the University of Pittsburgh Allegheny Observatory. When viewed through the 24-inch Keeler Telescope, the M33 "Triangulum" Galaxy is breathtaking: a delicate swirl of starlight suspended in space with hundreds of star clusters and nebulae. Its spiral arms quietly and loosely unfold, resembling the flowing arms of a cosmic ballerina.
The concave mirrors of the Keeler reflector focus light from celestial bodies to a focal point. I imaged the Triangulum using 3 filters (red, green, H-alpha) and calibration frames (bias, flat, dark). Then, I corrected, stacked, and colored the images in AstroImageJ and Adobe Photoshop.
Keeler's H-alpha filter unveils the glowing fingerprints of star formation, represented by violet-blue clusters of ionized hydrogen. NGC 604, a bright purple patch in the lower left, is one of the largest stellar nurseries in the Local Group. The balanced red and green filters bring a soft, golden warmth to the core, showing the age of billions of stars and the layered history of light.
As the third-largest galaxy in our Local Group, the Triangulum drifts with our Milky Way across space and time. Remarkably, it is one of the few galaxies moving towards us against the universe's expansion – Imaging the Triangulum through the Keeler, I was drawn in by its eternal spiral, just as it is drawn to our galaxy.
|
