Uncategorized · Reducer
Askar 0.75x 91F Reducer (ASKAR91FR)
SharpStar · sold by All-Star Telescope Canada · CAD 279.00 · in stock
The 0.75x reducer can bring Askar 91F's focal ratio down to F/5, 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 M59*1. The 91F photographic extension tube includes M54×0.75 and M48×0.75 adapters for…
| Option | Price | Stock | |
|---|---|---|---|
| Default Title | CAD 279.00 | in stock | Compare delivered price → · Checkout at All-Star Telescope Canada |
Prices and stock from all-startelescope.com’s public catalog, last checked 2026-11-02 19:51 UTC. “Order via Kaupia” shows the delivered price to your zip (item + the store’s shipping + est. tax) for participating merchants, which fulfill directly. “Checkout at the store” uses the store’s own payment and support. Agents: JSON at https://api.kaupia.com/v1/product?id=kp:f97ccdff-4be2-400c-abf6-50c62d29d2e1; delivered price GET /v1/quote; order with POST /v1/orders or MCP place_order.