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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...
RASA telescope filter wheel becomes reality with Wanderer FilterCube
Tuesday, May 19, 2026 by Richard Harris
For anyone using a RASA, the challenge has never just been monochrome imaging. It’s the reality that changing anything in front of the telescope can become an exercise in frustration. Whether you’re swapping between an Optolong L-Extreme, a quad-band filter, or moving back to b...
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 ...
Stellar SHO set from Optolong to unlock your cameras performance
Thursday, October 2, 2025 by Richard Harris
Optolong has introduced a new pair of filters designed for astrophotographers using color cameras: the L-Synergy and the updated L-eXtreme. Together, these filters provide a pathway to creating narrowband-style images in the well-known Hubble Palette (SHO) while maintaining compatibility with one-sh...