Alstar 0.5X Reducer for Photography and Observing - 1.25" Filter Thread (28.5x0.75MM) on Both Sides - Reduces The Focal Length for Visual and Photographic Use
US$7.60
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US$7.60
Price when purchased online
Free shipping
Free 30-day returns
Sold and shipped by rfv-weibern.at
Free 30-day returns Details
Product details
| Management number | 237037515 | Release Date | 2026/07/10 | List Price | US$7.60 | Model Number | 237037515 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
- Intended for use with with longer focal ratio telescopes and eyepieces of narrow to moderately wide apparent fields of view
- Free light transmission: 22.5 mm lens aperture; Can be used with additional spacers which is available separately to achieve further focal reduction
- Mounting threads: 1.25 inch filter thread; 28.5x0.75 MM on both sides: Threads into eyepieces; camera adapters and other accessories with standard 1.25 inch threads; And can be stacked with additional 1.25 inch threaded accessories
- 2 lenses; better correction; black anodized aluminum housing; Expand your telescope accessories with this 1.25 inch eyepiece reducer and to get into the fascinating world of deep sky observing; The larger lenses mean you get a much larger field of view
- 85 mm focal length; reduction factor of about 0.5X; depending on spacing 0.5x focal reducer effectively halves the focal length of a telescope; enabling lower magnification; a wider field of view; and shorter exposure times for astrophotography
| ASIN | B07R1VMK3C |
|---|---|
| Brand | A ALSTAR |
| Media Type | ProductImage, EnhancedContent |
| Item Weight | 0.8 Ounces |
| Screen Size | 1.25 Inches |
| Thread Size | 25 Millimeters |
| Manufacturer | Alstar |
| Model Number | SKU_AM_RC05XA3 |
| Special Effect | Enhancing |
| Photo Filter Size | 28.5 Millimeters |
| Compatible Devices | Eyepieces, Camera Adapters, Astronomy Webcams, Telescopes |
| Enclosure Material | Aluminum, Glass |
| Coating Description | No Coating |
| Photo Filter Factor | 0.5 x |
| Warranty Description | 2 Year |
| Exposure Control Type | Automatic (Auto) |
| Water Resistance Level | Not Water Resistant |
| Manufacturer Part Number | SKU_AM_RC05XA3 |
| Video Capture Resolution | 1280x720 |
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