Optolong 3nm Filter Testing Update (good or bad?)

Here's an update for you on the new Optolong 3nm filter testing. Narrowband 3nm filters and the OSC L-Ultimate Dual Narrowband 3nm filter.

#astrophotography #optolong #3nmfilter

You can pre-order these filters here...
OPT: https://bit.ly/3GekTk7
High Point Scientific: https://bit.ly/3FmU1gi
KW Telescope (Canada): https://bit.ly/3gk8YWi

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Видео Optolong 3nm Filter Testing Update (good or bad?) канала VisibleDark