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Meade 70mm f/5 Quadruplet ED APO Astrograph (OTA Only)
Meade 70mm f/5 Quadruplet ED APO Astrograph (OTA Only)
B&H # ME70AQAPOR MFR # 261000
Product Highlights
- 70mm Aperture Astrograph OTA
- 350mm Focal Length, f/5 Focal Ratio
- Apochromatic Quadruplet Lens System
- FPL-53 Extremely Low Dispersion Glass
- Fully Multi-Coated Optics
- 10:1 Dual-Speed Rack-and-Pinion Focuser
- Vixen-Style Dovetail Plate
- Adjustable Cradle-Ring Assembly
- Hard Aluminum Foam-Lined Carry Case
Price: $1,199.00
Instant Savings: $120.00
You Pay: $1,079.00
- 1Description
The 70mm f/5 Quadruplet ED APO Astrograph from Meade Instruments is a purpose-built telescope for astrophotography and astro-imaging, with an imaging circle designed to completely cover the larger sensors of today's DSLR cameras. Optically it is designed with fully multi-coated FPL-53 extremely low-dispersion (ED) glass in a quadruplet apochromatic lens configuration that corrects for spherical and chromatic aberrations, astigmatism, and off-axis comas. This correction creates a wide flat field of view without distortion and removes the blue-tinted "halo" affect for true high-contrast color transmission.
The OTA can be used for multiple astrophotography techniques, with a 42mm fully illuminated image circle that will cover a 35mm full frame sensor. Meade utilizes a precise dual-speed rack-and-pinion focusing mechanism that enables tack-sharp focusing with the ability to handle heavier loads versus other systems, such as a Crayford. While the astrograph is offered here without a mount or tripod for users that have a reliable support system, a set of mounting rings and a Vixen-style dovetail plate are included. For safe transport and storage, Meade includes a hard aluminum carrying case with a custom-cut foam lining.
- Optical Performance
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- 70mm objective lens
- 350mm focal length
- Fast focal ratio of f/5 is ideal for astrophotography or imaging
- Refractor-style optical design
- FPL-53 extremely low-dispersion glass limits spherical and chromatic aberrations, astigmatism and off-axis comas
- Quadruplet apochromatic lenses further correct chromatic and spherical aberrations for true color rendition without distortion across the entire field of view
- Fully multi-coated optics maximize light transmission, while improving color, clarity, and contrast
- Colors are faithfully rendered by eliminating the blue "halo" effect of chromatic aberrations
- Resolution: 1.655 arcsec, Dawes' Limit
- Retractable dew shield resists condensation build-up on the objective lens
- Focusing System
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- Optimized for imaging
- Rack-and-pinion design is able to carry heavier loads without shifting or flexing versus Crayfords
- 10:1 two-speed mechanism allows for precise focusing
- 2.5" drawtube allows the use of larger accessories, and ensures full coverage of camera sensors without vignetting
- Focuser lock knob locks the focuser in place for long-exposure astrophotography
- Mounting
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- Optical tube assembly only - mount and tripod required for proper use
- Vixen-style dovetail plate
- Cradle-ring assembly allows the scope orientation to be adjusted to avoid interference with gear or accessories, or on mount configuration
- Weight: 4.5 pounds
- Carrying Case
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- Hard aluminum exterior with reinforced edges and corners
- Hinged carry handles
- Over-center latches pulls the lid down for maximum security
- Custom-cut foam-lining protects OTA and accessories
UPC: 709942999068
- 1Description
| Optical Design | Refractor |
| Aperture | 70mm |
| Focal Length | 350mm |
| Focal Ratio | f/5 |
| Eyepiece Barrel Diameter | N/A |
| Diagonal | None |
| Finderscope | None |
| Tripod | None |
| Mount Type | Vixen-style dovetail |
| Optical Tube Dimensions | 12.25 x 4.5" / 31.1 x 14.4 cm |
| Weight | 4.5 lb / 2.0 kg |
| Packaging Info | |
|---|---|
| Package Weight | 11.7 lb |
| Box Dimensions (LxWxH) | 17.5 x 12.3 x 8.7" |
