0.75X Reducer F5 M59 Astronomical Accessory Support Full Frame Camera Photography for ASKAR 91F Telescope
Couldn't load pickup availability
Specifications
Brand
Technical specs
Design and durability
Introduction:
- The 0.75X reducer can bring Askar 91F's focal ratio down to F5, providing not only a faster focal ratio but also built-in field-flattening correction. The shorter focal ratio delivers a wider field of view and a faster exposure time, making it ideal for capturing large areas of nebulae, star clusters, and faint, fast-moving celestial objects.
- The 91F 0.75X reducer adopts a triplet design and supports a 44mm full-frame image circle. The back focus from the M48 thread is a standard 55mm. Both end threads are M59x1. The 91F photographic extension tube includes M54x0.75 and M48x0.75 adapters for direct and convenient connection to the 0.75x reducer. The reducer features a built-in M48x0.75 2-inch filter thread, allowing for direct filter installation and use. The entire reducer is CNC-machined and comes with front and rear metal threaded caps to protect against dust when not in use.
Specification:
- (After attaching) 91F Focal length: 455mm
- (After attaching) 91F Focal ratio: f/5
- Lens Number: Triplet design
- Back Focus: 55mm (from the base of M48 male thread)
- Weight: 0.3kg
- Rear-end thread type: M59x1
Package Included:
- 1 x Reducer
Note:
- The ASKAR 91F is not included.
- 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.