Night Sky Guide 2026 - Royal Astronomical Society of Canada Explore Scientific Efficiencies of the three bandpass

Efficiencies of the three bandpass filters (Green

The Antares 2MDS-DTL: 2" Mirror Diagonal with Twist-Lock retainer has a multilayer dielectric coating with 99% reflectivity in green (546 nM) light

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8 mm (2") Steel tripod Latitude adjustment range 3° - 65° Mount Head Weight 44 lb (20 kg) Accessory Tray Yes Tripod Weight 19

Night Sky Guide 2026 - Royal Astronomical Society of Canada Explore Scientific Efficiencies of the three bandpass2026 Night Sky Guide From Royal Astronomical Society of Canada 2026 Night Sky Guide is the ideal resource for both novice and experienced sky watchers in the United States and Canada, with all the advice, information and data that enthusiasts need to understand and enjoy the wonders of the night sky. This in depth guide introduces readers to the objects in the sky from stars, to comets, to globular clusters and then takes them through the cosmic