| ₹ 483785.0 includes GST and import duties. | |
| B2B customers can avail ₹ 73777.21 ITC on this product | |
| 100% Secure Payments | 100% Genuine product | |
| The product is eligible for Free Shipping |
Description
William Optics Cat 91 Overview
Featuring an image circle big enough for medium-format photography, the RedCat 91 WIFD 91mm f/4.9 Apochromatic Refractor Telescope from William Optics is a photo-only optical tube assembly built for making gorgeous deep-sky images. The RedCat 91 features a fully multicoated five-element lens with super ED, ED, and Lanthanum elements in a field-flattening Petzval design that delivers edge-to-edge sharpness and eliminates complex back-focus calculations. The William Optics Internal Focus Design does away with rear focusers that sag under heavy cameras and accessories; instead, a rigid and balanced 1:10 rack-and-pinion focuser in the middle of the OTA prevents tube tilt and resulting vignetting.
Items Included
- William Optics RedCat 91 WIFD 91mm f/4.9 Apochromatic Refractor Telescope (OTA Only)
- Bahtinov Lens Cap
- Vixen-Style Mounting Plate
- Mounting Ring/Handle Assembly
- M48 Adapter
- M54 Adapter
- 2 x Riser Block
- Allen Key Set
- Soft Carry Case
- Limited 2-Year Manufacturer Warranty
Not Included
-
AC AdaptersEssential
Additional Resources
William Optics Cat 91 Specs
| Optical Design |
Apochromatic Refractor
|
| Aperture |
91 mm / 3.6"
|
| Focal Length |
448 mm
|
| Focal Ratio |
f/4.9
|
| Focuser |
Dual-Speed Rack-and-Pinion
|
| Weight |
13.9 lb / 6.3 kg
|
| Optical Design |
Apochromatic Refractor
|
| Aperture |
91 mm / 3.6"
|
| Focal Length |
448 mm
|
| Focal Ratio |
f/4.9
|
| Focuser |
Dual-Speed Rack-and-Pinion
|
| Diagonal |
No
|
| Finderscope |
No
|
| Mounting |
Vixen Style
|
| Optical Tube Dimensions |
Length: 21.9" / 55.6 cm
|
| Payload Capacity |
No
|
| Altitude Adjustment |
No
|
| Latitude Adjustment |
No
|
| Counterweight |
No
|
| Weight |
13.9 lb / 6.3 kg
|
| Package Weight |
21.515 lb
|
| Box Dimensions (LxWxH) |
26.4 x 13.7 x 12.2"
|
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Bulk Discount
| Quantity | Price |
| 2 | ₹ 474109.3 |
| 3-5 | ₹ 469271.45 |
| 5-10 | ₹ 459595.75 |
| 10+ | ₹ 449920.05 |
Bulk discount will be automatically applied during checkout based on quantity.