ObservatoriesOSI has an almost complete prototype 10 foot dome. It will soon be mass produced...
Services: OSI, Astrodon, OWLOptical Structures provides a variety of services including: Astrodon Professional Astrophotography Services. We offer advice,...- Authentic Astrodon PackagingAll Astrodon filters should arrive in Tamper-Proof packaging. There should be a seal on the...
- 36mm ring mount for Photometric FiltersUnlike other Astrodon filters, the Photometric filters (Johnson-Cousins and Sloan) do not come as 36mm...
- Video of Astrodon Luminance filter blocking IR light from TV remoteHere is something you can try at home: Any cellphone camera or DSLR camera will...
Most Astrodon Filters in stock!I just (July 31, 2018) finished updating the inventory numbers on the website and the...
Should I get Astrodon E-Series or I-Series LRGB filters?Astrodon LRGB Gen2 I-Series Tru-Balance Filter Sets A common question: Should I get E-Series or...
2″ Lumicon Econoline OIII Filter Now $50We have halved the price of the Lumicon 2 inch Econoline OIII filter! Now only...- What is the difference between Astrodon 1.25″ filters and Astrodon 31mm filters?This is a common source of confusion. So...here we go. The glass portion of the...
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