0.5X Telescope Focal Reducer 1.25 Inches Filter Thread 28X0.6Mm on Both Sides Reduces the Focal Length for Telescope Eyepiece Astronomical
Description
| Item model number | FF9115A |
| Optical Tube Length | 1.25 Inches |
| Eye Piece Lens Description | Fully multi-coated optics |
| Power Source | Focal Reducer |
| Focus Type | Manual Focus |
| Country of Origin | China |
| Item Weight | 18.14 Grams |
| Objective Lens Diameter | 1.25 Millimeters |
| Is Discontinued By Manufacturer | No |
| Product Dimensions | 2"D x 0.5"W x 2"H |
| Telescope Mount Description | Altazimuth Mount |
| Finderscope | Reflex |
- Fits all standard 1.25" scope eyepieces;Its role is to reduces the focal length of your telescope by half ;increasing the field of view;and shorter exposure times for astrophotography;usually for a longer focal length telescope
- The reducer has standard 1.25inch telescope threads M28x0.6 and fits easily into any 1.25" eyepiece or any 1.25" photo adapter;diagonal;extender tube;increase the image field of your web cameras
- Fully multi-coated optics held in a black-anodized aluminum filter cell;nice anodized aluminum housing
- It is not recommended for very fast scopes or very wide angle eyepieces for visual
- Screw the reducer into a 1.25" eyepiece;and you will get a smaller magnification and a significantly larger field of view;simply use the reducer if you still need the correct eyepiece
Product Description
SVBONY 1.25" 31.7mm 0.5X Focal Reducer for Telescope Eyepiece Astronomy
Reduction factor of about 0.5x effectively halves the focal length of a telescope; enabling lower magnification; wider field of view and shorter exposure times for astrophotography.
0.5X Focal Reducer Features:
Reduces the focal length for visual and photographic use.
This reducer halves the focal length of your telescope, giving you a much wider field of view. You can use this, for example, for doing astrophotography by using an astronomy webcam.
Apply to: 0.5x reducer for screwing into a filter thread; more lens speed.
Using for: Increase the image field of your web camera, use the reducer visually with an eyepiece, also ideal for video astronomy.
See the Moon: Record large areas of the moon's surface.
Fits All Standard 1.25" Scope Eyepieces
Package Includes:
1 X SVBONY 1.25" Telescope 0.5X Focal Reducer
Reduction factor of about 0.5X
Expands the image field of your webcam;
More light intensity;
Can be used visually with eyepiece and filter;
Also optimal for video astronomy;
Take images of larger areas of the Moon's surface.
0.5X focal reducer: 28x0.6mm threads for eyepieces, camera adapters, diagonals, extender tubes and other accessories with standard 1.25" threads, increases the image field of your web cameras.
Pure optical glass lens
Pure optical glass lens and broadband coating optics increase light transmission and prisms are held in a black-anodized aluminum housing for better correction.
Solid Construction
The prisms are held in a sturdy and durable black-anodized aluminum housing for better correction. It is not recommended for very fast scopes or very wide angle eyepieces.
Specifications
| Focal Reducer: | 0.5X |
| Lens Material: | pure optical glass lens |
| Lens material: | Broadband coating |
| Sleeve material: | Metal |
| Barrel Size: | 1.25 inch / 31.7mm |
| Thread interface: | M28x0.6 pitch (Fine Thread) |
| Total item length | (including external thread): 0.55inch / 14mm |
| Total item length | (excluding external thread): 0.43inch / 11mm |
| Clear aperture: | 0.87inch / 22mm |
| Weight: | 0.42oz / 12g |
| Color: | Black |
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