A Classic Summer Duo: The Trifid and Lagoon Nebulae
Summer nights offer a spectacular array of celestial wonders, and among the most iconic are the Lagoon Nebula (M8) and the Trifid Nebula (M20). These two magnificent emission nebulae, often appearing together in astrophotography, are a testament to the vibrant star-forming regions within our galaxy.
This capture was achieved from San Antonio, Texas, under Bortle 7 conditions, demonstrating that even in moderately light-polluted skies, stunning deep-sky objects can be revealed with dedicated effort and equipment.
Technical Details:
- Target: M8 (Lagoon Nebula) & M20 (Trifid Nebula)
- Location: San Antonio, TX (Bortle 7)
- Mount: IOptron SkyGuider Pro
- Camera: Nikon D5300 (astromod)
- OTA: William Optics Zenithstar 61II + Field Flattener FLAT61A
- Focal Length/Aperture: 360 mm @ f/5.9
- Guide Scope: William Optics Uniguide 32mm
- Guide Camera: ZWO ASI120MM mini + ASIair Pro
Acquisition:
- Lights: 29 frames x 300 seconds (Total exposure: 2 hours 25 minutes)
- ISO: 800
- Calibration Frames: 25 Darks, 40 Flats, 40 Biases
Processing:
The raw data was stacked and meticulously processed using PixInsight, a powerful software suite favored by astrophotographers for its advanced algorithms and capabilities in bringing out the intricate details and colors of nebulae.
This image beautifully showcases the glowing hydrogen-alpha regions of the Lagoon Nebula and the distinct, often trifurcated, structure of the Trifid Nebula. It's a reminder of the vast beauty that awaits us in the night sky, even from our own backyards.
