Askar 0.75x Reducer for 71F
When will I receive it?
Products marked In stock are dispatched promptly — the exact delivery estimate for your address is shown at checkout, before you confirm the order.
For international shipments, delivery times depend on the destination and are always displayed at checkout before payment.
Products marked Available on order require 5–15 business days for processing. Our team will keep you updated promptly if anything changes.
What are the warranty terms?
Shop with confidence: all our products include a 24-month legal warranty for conformity defects, managed directly by our team.
Many brands also offer extended warranty coverage beyond 24 months — contact us to find out the specific terms for the product you're interested in.
Click here for more information.
Can I return a product?
Yes: you have 14 days from delivery to return any product and receive a full refund — see our Refund Policy for full details.
Items must be returned in their original condition and packaging. Return shipping costs are the customer's responsibility.
Not sure which product is right for you? Contact us before buying — we'll help you find the perfect instrument so you won't need to return anything.
Sei un'azienda? Compila il modulo per la fatturazione
Clicca sul pulsante qui sotto per inserire i tuoi dati aziendali:
Vai al moduloAskar 0.75x Reducer for 71F
The Askar 0.75x reducer for the 71F telescope is designed to enhance imaging performance by shortening the focal length and increasing optical speed. Its optical triplet design supports a 44 mm full-frame image circle, making it suitable for DSLR and large-format astronomy cameras.
Standard Backfocus and Compatible Threading
The reducer provides a standard 55 mm backfocus from the M48 male thread, ensuring easy integration with common photographic setups. Both ends feature M59×1 threads, and the 71F photographic extension tube includes M54×0.75 and M48×0.75 adapters for direct connection.
Filter Support and CNC-Machined Construction
The included adapter features an integrated 2" filter thread (M48×0.75), allowing direct installation of standard filters. The reducer is fully CNC-machined for maximum durability and precision, and both ends are protected by threaded metal caps to prevent dust accumulation.
Technical Specifications
| Parameter | Value |
|---|---|
| Focal length after installation | 369 mm |
| Focal ratio after installation | f/5.2 |
| Optical design | Triplet |
| Backfocus | 55 mm (from M48 male thread) |
| Weight | 0.23 kg |
| Rear thread | M59×1 |