BORTLE CLASS 1 DARK SKY · 0.7-METER CORRECTED DALL-KIRKHAM

Deep-sky clarity,
light-years within reach.

Zero light pollution. Automated clamshell domes situated at 2,400 meters elevation in the Atacama and Mojave deserts. Live sub-arcsecond seeing conditions for deep-sky scientific CCD imaging.

Focal Length & FOV Simulator Dark Sky Rating ↓

Sleek observatory dome open under brilliant starry Milky Way sky in the desert

ATMOSPHERIC SEEING CONDITIONS

Three Research-Grade Astro Benchmarks

BORTLE CLASS 1

Atacama Dark Sky Reserve

Zero artificial light domes on the horizon. Zodiacal light casts visible shadows on the ground; naked-eye limiting magnitude of 7.6 to 8.0.

0.6 ARCSECOND SEEING

Direct-Drive Alt-Az Mount

Encoders with 0.02 arcsecond resolution eliminating periodic gear error. Capable of unguided 20-minute exposures on deep emission nebulae.

FUSED SILICA MIRRORS

Active Thermal Stabilization

Near-zero coefficient of thermal expansion fused silica primary mirror with triple cooling fans preventing mirror boundary layer turbulence.

DEEP-SKY SIMULATOR

Target Nebula & Exposure Stacking Calculator

Select your deep-sky astronomical target to calculate focal length framing, narrowband filter passes, and total integration exposure hours.

FIELD OF VIEW (FOV) 1.2° × 0.8° Wide Field Full-frame 60mm image circle

RESOLUTION SCALE 0.45 Arcsec / Pixel Nyquist sampled seeing

RECOMMENDED INTEGRATION 12 Hours (Ha + OIII + LRGB) 3nm Chroma narrowband