Telescopes & Astronomy
Beginner Telescopes
Buying your first telescope? Browse our curated selection of beginner telescopes.
Shop by Use
What will you use your telescope for? Explore the many uses of different types of telescopes.
Shop by Type
Choose your telescope by optical design or learn more about the different types of telescopes.
-
AUD $799.00In Stock
Astrodon 5nm Narrowband Filters – H-alpha 5nm
H-α (hydrogen-alpha) at 656 nm (nanometers) is deep red in color and the most popular narrowband filter. Hydrogen is ubiquitous in the cosmos and is present in emission nebula (North American, Pelican), planetary nebula (Dumbbell, Ring), Wolf-Rayet objects (Crescent, Thor’s Helmet) and supernova remnants (Veil).
Learn More
Why buy from Sirius Optics
Queensland's largest telescope showroom and warehouse
Run by astronomers and nature lovers, not sales people
Expert advice and lessons
Secure checkout with multiple payment options
30 day returns (T&Cs apply)
