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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...
Astrophoto processing: when you've gone too far
Wednesday, March 18, 2026 by Richard Harris
I have two truths rattling around in my head every time I sit down to process a deep sky target. The first is that we are standing on a pile of new tools that really do make this hobby easier. The second is that the same tools can quietly move us from astrophotography into something closer to digita...
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...
Dual band filter from Antlia arrives
Tuesday, June 10, 2025 by Richard Harris
The Antlia ALP-T Dual Band 3nm SII & OIII Filter is a dual narrowband optical filter designed for astrophotography with color cameras. It isolates two specific emission lines, Sulfur-II at 672.4 nanometers and Oxygen-III at 500.7 nanometers, allowing users to image nebulae that emit strongly in ...