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Optolong L2 Dual Combo Filters Review

Thursday, July 30, 2026 by Jim Thompson

Optolong's multi-narrowband (MNB) filter is called the L-Synergy.  It has a 7nm wide pass band at O-III and another at S-II.  When paired with their existing L-eXtreme filter and a one-shot colour (OSC) camera, one is able to produce nebula images using the Sulphur-Hydrogen-Oxygen (SHO...

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Optolong L2 Filters Tested: The April 2026 ScopeTrader Issue

Monday, April 6, 2026 by Richard Harris

Welcome to April, where galaxies are in full bloom. Here in Missouri the skies are finally starting to settle into something usable. If the pattern holds like it usually does, we tend to get our most stable stretch somewhere between April 10th and the end of the month. Those are the nights where ...

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