HR Variable Coma Corrector (2-inch) With T2 Adapters

Designed by renowned optical engineer Harrie Rutten, the HR Variable Coma Corrector eliminates coma in Newtonian reflectors. The optics are EMC-coated.

The HRCC02 is a photo-visual design: it works for both astrophotography and visual observing (for imaging, the helical focuser comes off and the camera attaches through the adapters). The built-in helical focuser provides fine-focus adjustment for visual use, while M42 and M48 camera adapters (both included) connect directly to your imaging setup.

The variable spacer with laser-etched markings lets you tune the corrector for different Newtonian configurations. Works with almost any Newtonian with a parabolic primary mirror, including fast Newtonians where coma correction matters most.

Key Features

• EMC-coated optics
• Photo-visual: built-in helical focuser for visual use + camera adapters for imaging
• Variable spacer with laser-etched markings for tuning to your specific Newtonian
• M42 and M48 camera adapters included (HRCC02-00 model)
• 2" barrel
• Four-lens design correcting a 30mm field, for Newtonians as fast as f/3
• Polychromatic Strehl of 0.98 at f/4 and 0.96 at f/3 (visual)

Ideal For

• Newtonian astrophotographers — minimize or eliminate coma
• Visual observers with fast Newtonians — the built-in helical focuser handles visual fine focus
• Fast Newtonians — where coma correction has the biggest visual and imaging impact