Starlight Instruments SIPS Coma Corrector

The Optical Core: An Integrated Tele Vue Paracorr Type 2

At the heart of the SIPS are the legendary Tele Vue Paracorr Type 2 optics. This lens group is the industry standard for correcting coma, the optical aberration in fast parabolic mirrors that renders stars at the edge of the field as distracting, comet-like shapes. By integrating these world-class optics, the SIPS helps your fast Newtonian deliver sharp stars out toward the edge of the field. The Type 2 improves on the Type 1 at all focal ratios, especially below f/4, and gives a flatter field.

The Mechanical Advantage: A Fixed System for the 2" Feather Touch Focuser

The true innovation of the SIPS is its mechanical design. Instead of a sliding, adjustable mechanism, Starlight Instruments has fixed the Paracorr Type 2 optics inside a rigid housing made specifically for their 2" Feather Touch focuser. Once its height is set at installation with the positioning aid, the corrector stays at the optimum spacing and needs no readjustment unless collimation moves the primary mirror. You simply focus your eyepiece, saving valuable time and eliminating a common source of setup frustration.

SIPS vs. Standard Paracorr: No Tuning Between Eyepieces

While a standard, tunable Paracorr offers the flexibility to be used in various focusers, that adjustability means re-tuning it between eyepieces. The SIPS is a dedicated solution that trades universal compatibility for ease of use on its target instrument.

• Zero Readjustment: With a standard Paracorr, you must fine-tune the corrector's position for different eyepieces. The SIPS requires no such adjustment; you just focus the focuser, making eyepiece swaps fast and foolproof.