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User Manual for Celestron 0.7xReducer Lens for EdgeHD 1400 OTA Click to enlarge the picture
Contents of the user manual for the Celestron 0.7xReducer Lens for EdgeHD 1400
- Product category: Astrophotography Celestron
- Brand: Celestron
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Celestron Astrophotography
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User manual for the Celestron 0.7xReducer Lens for EdgeHD 1400 contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Celestron product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Celestron user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Celestron product will considerably shorten its lifespan!
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Product description The Celestron 0.7x Reducer Lens features a custom 5-element optical design and is engineered to maintain the flat-field performance of the EdgeHD 1400 aplanatic Schmidt optical tube assembly (OTA). This reducer lens provides a substantial 5.75" back focus to accommodate an assortment of imaging accessories. It offers high index optical elements, including extra low dispersion, Lanthanum elements, which provide high contrast viewing while minimizing chromatic aberration. All air-to-glass surfaces are treated with multiple layers of anti-reflection coatings for maximum light transmission and color correction, and the interior of the housing has blackened edges to minimize internal reflection and further enhance image contrast.The reducer lens features large-diameter lens elements and up to 60mm clear aperture, which ensure that the image circle remains at a generous 42mm for use with large CCD sensors. The mechanical design incorporates a computer-assisted CNC machined aluminum housing for precise spacing and alignment of optical elements and threaded metal covers on the lens assembly to protect your lens from dust and scratches. - Performance
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- 5-element optical layout designed specifically for the EdgeHD 14" Optical Tube Assembly to maintain its flat-field performance
- The EdgeHD 0.7x lens provides generous back focus to accommodate additional accessories and a wide variety of cameras. Also allows use of existing EdgeHD T-adapters and other Celestron imaging accessories (sold separately)
- Makes your EdgeHD 1400 Optical Tube Assembly one full F-Stop faster than f/11, reducing your exposure time by one-half to capture the same brightness of the object
- Increase the field of view by 43%, which is better for capturing wide field images of larger galaxies and nebulae
- Glass
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- The EdgeHD Reducer Lens uses rare earth Lanthanum glass elements for clear, high contrast viewing while minimizing chromatic aberration
- All air-to-glass surfaces have multiple layers of coating for maximum light transmission and color correction
- All lens elements have blackened edges to minimize internal reflection and maximize contrast
- Full Frame Design
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- Threads directly onto the 3.25" threads of the EdgeHD Optical Tube, which reduces mechanical vignetting and allows for use with larger (full frame) sensors and Off-Axis Guiders
- 60mm clear aperture lens optimized for a 42mm image circle for use with large CCD sensors
- Mechanical Design
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- Computer-assisted CNC machined aluminum housing for precise spacing and alignment of optical elements
- Threaded metal covers for both ends of the lens assembly to protect your lens from unwanted dust and scratches
UPC: 050234942409 In the Box Celestron 0.7xReducer Lens for EdgeHD 1400 OTA Limited 2-Year Warranty Table of Contents
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Technical parametersCelestron 94240 Specs | Design | 5-element | | Compression Factor | 0.7x | | Back Focus | Optimal: 5.7" / 14.6 cm | | Weight | 3.25 lb / 1.5 kg | | | | Package Weight | 3.79 lb | | Box Dimensions (LxWxH) | 5.95 x 5.9 x 4.9" |
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