The Astro-Physics 190mm f/6 StarFire CS (190CS) is a top-tier apochromatic refractor telescope designed for both astrophotography and visual observation. It combines advanced optical engineering with user-friendly features to deliver exceptional performance.
Optical excellence
The 190CS features a 190mm (7.5″) triplet Superachromat lens, delivering diffraction-limited performance with Strehl ratios exceeding 95% across the visual and photographic spectrum, peaking at an impressive 99.8%. This high level of correction ensures sharp, high-contrast images with minimal aberrations.
Key features and specifications
- Aperture: 190mm (7.5″)
- Focal Length: 1140mm
- Focal Ratio: f/6.0
- Optical Design: Triplet Superachromat
- Strehl Ratio: >95% across visual and photographic range; peaks at 99.8%
- Image Circle: 64mm, suitable for large-format sensors
- Focuser: 3.5″ rack-and-pinion with 9:1 dual-speed FeatherTouch micro-reduction
- Backfocus: 7.3″
- Dew Shield: Fully retractable, felt-lined with secure thumbscrew fastener
- Field Flattener: Included for edge-to-edge sharpness
- Rotating Dovetail: Doveloc circular dovetail system for easy framing
- Weight: Approximately 39 lbs (17.7 kg) including dew shield
- Length: 1016mm with dew shield retracted
- Coatings: Fully multi-coated for high light transmission
- Included Accessories: Flat Field Corrector, Adapters for 2.7″, 2″, and 1.25″, Carrying Case
Imaging capabilities
The f/6 focal ratio offers a balance between resolution and imaging speed, making it ideal for modern CMOS sensors. The included field flattener ensures sharp, high-contrast images across large-format sensors. The 64mm image circle supports full-frame and medium-format cameras, providing versatility for various imaging setups.
Build and portability
Despite its large aperture, the 190CS maintains a weight of approximately 39 lbs (17.7 kg), making it suitable for high-end mounts. The optical tube assembly measures 1016mm in length with the dew shield retracted, enhancing portability. The robust construction ensures durability, while the retractable dew shield and rotating dovetail system add convenience during setup and observation.
Price and availability
The price and the availability of the telescope are yet to be announced by Astro-Physics.
Final thoughts
The Astro-Physics 190mm f/6 StarFire CS stands out as a premium instrument for serious astronomers and astrophotographers. Its advanced optical design, high-quality components, and user-friendly features make it a valuable addition to any observatory. Whether capturing deep-sky objects or observing planetary details, the 190CS delivers exceptional performance.
Clear skies!
