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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...
IDAS Dusk to Dawn filter
Thursday, August 7, 2025 by Russ Scritchfield
The IDAS DTD, officially known as the Dusk to Dawn filter, represents a unique approach to astrophotography filtering. Unlike many filters that specialize in narrowband isolation or broadband light suppression, this multi-bandpass filter offers a hybrid experience that caters to a wide variety of ce...
Scorpio Dual Narrowband 3nm Filter
Friday, January 31, 2025 by Richard Harris
The Scorpio Dual Narrowband 3nm Filter has recently gained attention for its performance and affordability. If you are on the lookout for an exceptional filter that doesn’t break the bank, then this might just be the one for you. As I was scouring through various options online, I stumbled upo...
SVBONY SV240 filter reviewed
Tuesday, January 7, 2025 by Russ Scritchfield
ScopeTrader’s quick take on the SVBONY SV240 Multi-Narrowband Filter highlights its remarkable capability for urban astrophotography, allowing users to capture deep-sky objects without the need to travel far from light-polluted areas. This 2-inch mounted filter is compatible with most astropho...