Celestron
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AUD $599.99In Stock
- Enhance imaging of nebulae with your 8” Rowe-Ackermann Schmidt Astrograph (RASA) by blocking light pollution, improving image contrast, and darkening the sky background.
- This filter transmits only the key Hα-Hβ-OIII wavelengths from emission nebulae, providing high contrast that makes them “pop.”
- This filter selectively blocks wavelengths of light from sources of light polluted skies and natural sky glow.
- Unlike similar filters with narrower bandpasses, this filter was engineered specifically to work with RASA’s fast F/2 optics.
- Fits into the 8” RASA’s integrated filter mount, maintaining peak optical performance.
- Optically flat surfaces free of defects, constructed of Schott glass with anti-reflection coatings.
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AUD $499.00In Stock
- Enhance your 8” Rowe-Ackermann Schmidt Astrograph (RASA) by blocking light pollution, improving image contrast, and darkening the sky background.
- This filter selectively blocks wavelengths of light from sources of light pollution, such as streetlights, not broad regions of the spectrum.
- Does not block wavelengths associated with emission nebulae, keeping your nebula images bright and detailed.
- Fits into the 8” RASA’s integrated filter mount, maintaining peak optical performance.
- Optically flat surfaces free of defects, constructed of Schott glass with anti-reflection coatings.
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AUD $249.00In Stock
- Ultra-long 56mm focal length provides low power views in telescopes with a long focal length, perfect for viewing wide-field deep sky objects or daytime terrestrial vistas
- 4-element Plössl design provides sharp views to the edge of the 47° apparent field of view
- Fully multi-coated for best light transmission through the lenses, resulting in brighter images
- Comfortable eye relief (52mm) and fold-down rubber eyeguard for comfortable viewing with or without eyeglasses
- Knurled rubber grip ring for non-slip handling during observing sessions
- Threaded to accept most 2” filters
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AUD $499.00In Stock
- Binoviewers improve views dramatically, producing a three dimensional effect that you’ll love!
- Using two eyes for observing instead of one lets you see more detail, reduces eye fatigue, and increases contrast
- For use with catadioptric telescopes and other telescopes with sufficient back focus
- Includes an aluminum carry case with foam-lined interior
- Requires a matching pair of 1.25” eyepieces, sold separately
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AUD $84.99In Stock
- Omni eyepieces offer a quality 4-element Plössl optical design at a super affordable price
- Rubber eyecups provide comfort and increase contrast. Leave them up or fold them down when wearing eyeglasses.
- Beautiful matte aluminum barrels and blackened lens edges prevent internal reflections
- 1.25” barrels are threaded to accept filters
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AUD $69.00In Stock
- Omni eyepieces offer a quality 4-element Plössl optical design at a super affordable price
- Rubber eyecups provide comfort and increase contrast. Leave them up or fold them down when wearing eyeglasses.
- Beautiful matte aluminum barrels and blackened lens edges prevent internal reflections
- 1.25” barrels are threaded to accept filters
-
AUD $69.00In Stock
- Omni eyepieces offer a quality 4-element Plössl optical design at a super affordable price
- Rubber eyecups provide comfort and increase contrast. Leave them up or fold them down when wearing eyeglasses.
- Beautiful matte aluminum barrels and blackened lens edges prevent internal reflections
- 1.25” barrels are threaded to accept filters
-
AUD $69.00In Stock
- Omni eyepieces offer a quality 4-element Plössl optical design at a super affordable price
- Rubber eyecups provide comfort and increase contrast. Leave them up or fold them down when wearing eyeglasses.
- Beautiful matte aluminum barrels and blackened lens edges prevent internal reflections
- 1.25” barrels are threaded to accept filters
-
AUD $79.00In Stock
- Omni eyepieces offer a quality 4-element Plössl optical design at a super affordable price
- Rubber eyecups provide comfort and increase contrast. Leave them up or fold them down when wearing eyeglasses.
- Beautiful matte aluminum barrels and blackened lens edges prevent internal reflections
- 1.25” barrels are threaded to accept filters
-
AUD $69.00In Stock
- A customizable way to reduce brightness and glare on the brightest celestial objects like the Moon, Venus, and bright double stars
- Adjust the level of light transmission from 1-40% for the best possible view for your specific target and current viewing conditions
- Simple to use—just rotate filter’s lower ring to adjust brightness
- Threads onto any Celestron 1.25” eyepiece
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)
