 
Specifications
Brand
Technical specs
Design and durability
Askar F3.9 0.7x Full-frame Reducer Professional Astronomical Accessory Dedicated for FRA400C Astrograph
Description:
- 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 shooting large nebulae, star clusters, as well as faint and fast-moving celestial objects.
- The FRA400C reducer features an M48x0.75 rear-end adapter and has a built-in 2-inch filter thread for convenient filter attachment.
Specification:
- (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: M48x0.75 (M48x0.75 filter thread inside)
Package Included:
- 1 x Reducer



- Businesses may need to employ various types of legal pages on their websites or mobile apps. Some, like Privacy Policies, are required by law, while others, such as a Terms and Conditions agreement (T&C), are not. Regardless of legal demands, you may find that your company needs one or more legal pages for compliance and optimal operation.
- In this article, we will go over the most common legal pages, walk you through a summary of what each requires, and explain why you may need it. In addition, you'll find a sample template for each type of legal page so you can quickly get started writing your own.
If you have any questions about this product, please let us know by filling out the form below, and we will contact you as soon as possible.
 
