FRA400C 0.7x Full-Frame Reducer
Category： Askar
Specific FRA400C 0.7x full-frame reducer.
Retail Price:
$
249
Upon package arrival, expect to pay customs duties and VAT to customs.
Product introduction
Specially designed for the FRA400C, this 0.7x reducer adopts a triplet lens design, it can reduce the overall focal length to 280mm and the focal ratio to F3.9 while providing a flat-field correction. When used with the reducer, the FRA400C supports full-frame imaging and the back focus is a standard 55mm.
The shorter focal ratio enables the telescope to achieve a wider field of view and faster exposure times, making it ideal for capturing large nebulae, star clusters, as well as faint and fast-moving celestial objects.
The FRA400C reducer features an M48×0.75 rear-end adapter and has a built-in 2-inch filter thread for convenient filter attachment.
Specifications
0.7x Reducer Parameters | ||
（After attaching）FRA400C Focal length | 280mm | |
（After attaching）FRA400C Focal ratio | f/3.9 | |
Lens Number | Triplet design | |
Back Focus | 55mm（from the base of M48 male thread） | |
Weight | 0.46kg | |
Rear-end thread type | M48×0.75 (M48×0.75 filter thread inside) | |
0.7x Reducer Size Diagram |
0.7x Reducer Installation |
Spot Diagram |
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