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SIGH. Aligning optical assembly today and huh weird, red beam isn't passing the UV dichroic beamsplitter. Oh right that's because it's actually a UV bandpass filter 🤦

Barry (Eternity Boy)

@thegrandblooms.bsky.social

21 Feb 2025

Was it a ZWB2? I have been looking for uv bandpass filters for uv photography that doesn't have the ir leakage but the baader-u seems unusually pricy, curious if you know of any alternatives

Breaking Taps

@breakingtaps.com

Was actually something I got from aliexpress a year or two ago. Specs are a bit of a mystery and it wasn't well labeled, which is why I forgot it was a bandpass. Anecdotally it seems pretty good but haven't tested rigorously www.aliexpress.us/item/3256803...

aliexpress.usFiltro de paso de banda estrecho, 385nm 400nm 405nm 410nm 420nm, personalizaciónSmarter Shopping, Better Living! Aliexpress.com

21/2/25, 11:16 pm0 reposts1 like

Barry (Eternity Boy)

@thegrandblooms.bsky.social

22 Feb 2025

Good to know, thanks for the lead!