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Due to the USA–China tariff escalation, we will temporarily not receive additional inventory for Celestron and Sky-Watcher products. As a result, we are unable to accept orders for any out-of-stock items and encourage you to take advantage of the products currently in stock while supplies last.
Due to the USA–China tariff escalation, we will temporarily not receive additional inventory for Celestron and Sky-Watcher products. As a result, we are unable to accept orders for any out-of-stock items and encourage you to take advantage of the products currently in stock while supplies last.

The Daystar Interference Eliminator can be used between the camera and the Quark to adjust the light angle and extinct the interference pattern – or Newton’s Rings.

The effect is similar to interference testing of an optical surface between two flat surfaces. The sensor and cover slip cause a small interferometer inside the camera and cause a Newton’s Ring moire’ pattern. The CCD chip must be tilted to a minor degree to prevent this pattern. Recent advances in aftermarket adapters offer a simplified solution for the issue. This effect is a concern for both color and monochrome sensors.