• 72mm aperture
• 400mm focal lengrth
• Quintuplet air-spaced APO design
• Supports full frame
• No need for flattener
• 0.7x reducer (optional)
• No need to calculate backfocus
• Retractable lens hood
• 150mm dovetail plate
• Multi-functional handle
• 3" rack-and-pinion focuser
• 1:10 fine adjustment
• Various adapters included

• It is workable to shoot galaxies, reflection nebulae and star clusters
• Refined coating process makes the Triband RGB Ultra filters with excellent halo suppression and improved signal-to-noise performance
• It has been specifically designed for balanced color transmission using Antlia's experience in spectrum design
• The balanced transmission allows the minimal color cast to broadband emission objects such as stars, galaxies, and globular clusters.
• The Triband RGB Ultra can be used with nearly all systems as fast as f/2 with minimal loss of efficiency or shifts in spectral response
• When shooting LRGB with mono cameras, unless you are wanting to image LDN (dark nebulae) the Triband RGB Ultra can be used as a luminance filter replacement for objects such as nebulae and galaxies to improve contrast and signal to noise ratio
• The Triband RGB Ultra is able to better isolate the H-alpha, O3 and blue spectrum from the background light pollution
• For visual use, Triband RGB Ultra filter ensures the high transmittance of the HSO emission line and can be used for observing deep-sky objects with large-diameter telescopes.
• The filter provides excellent flexibility and compatibility with both OSC and Mono camera systems
• It facilitates the imaging of most astronomical objects using all optical configurations down to f/2 focal ratio

• Unique design, center-balanced equatorial mount (CEM)for maximum payload and minimum mount weight
• Ideal for both visual observation and astrophotography
• Low periodic error (< ± 10 arc seconds)
• Payload of 12 kg (26 lbs) with the mount-only weight of 4.5 kg (10 lbs)
• CNC machined and cast metal body
• Spring loaded gear system
• Large easy to use quick-lock gear clutches
• Adjustable counterweight shaft for 0º latitude operation
• Stepper motor with low power consumption
• Integrated iOptron iPolarTM electronic polar scope
• Polar alignment routine for those who can’t see the Pole Star
• Go2Nova® 8409 controller with Advanced GOTONOVA® GOTO Technology
• Integrated ST-4 autoguiding port
• Built-in Wi-Fi
• USB port for firmware upgrade and computer control
• Optional 32-channel Global Positioning System (GPS)
• Optional iGuiderTM autoguiding system #3360

• An incredibly simple and intuitive astrophography computer
• Control your mount, camera, and more wirelessly
• Automatically stack and process images for extraordinary deep sky or planetary images

This product is discontinued, please see the 256G version as the official replacement.