| ₹ 364875.0 includes GST and import duties. | |
| B2B customers can avail ₹ 55643.44 ITC on this product | |
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Description
William Optics Ultra Cat Overview
Designed for astrophotography, the Ultra Cat 76 WIFD 76mm f/4.8 Apochromatic Refractor Telescope from William Optics uses an unorthodox design for supporting heavy cameras and delivers a wide field with a fast focal ratio plus a Petzval lens for beautiful images. The WIFD (William Optic Internal Focus Design) places the 10:1 rack-and-pinion focuser in the center of the optical tube, eliminating the tilt and vignetting that can occur from heavy cameras on traditional rear-mounted focusers. The five-element Petzval-style lens yields a sharp image with no need for a flattener, and the dust cover has a built-in Bahtinov mask for tack-sharp star images. This optical tube assembly requires a mount and a tripod for use.
- Fast f/4.8 focal ratio and 365mm focal length for wide field of view and fast exposure times
- Apochromatic Petzval-style five-element lens, including ED and Lanthanum glass, produces rich views with minimal chromatic aberration
- Sharp image with no need for a separate field flattener
- Supports 50mm image circle for full-frame, APS-C, and micro four thirds cameras
- Dust cover with integrated Bahtinov mask allows for fine focusing on stars
- Sensor Tilt Xterminator/Rotator with M54 and M48 camera adapters
- T-mount compatible with Canon EF and RF, Nikon F and Z, Sony E, Pentax K, micro four thirds, and FUJIFILM X
- William Optics Internal Focus Design places focuser in center of OTA to balance the weight of imaging systems
- Precise internal sliding of fixed optics prevents image shift, ensuring stable and clear observations
- 10:1 coarse and fine focus rack-and-pinion design
- Compatible with ZWO EAF automatic focuser
- 0-20mm focus travel, ruler to 21mm
- Dial-style thermometer for gauging temperature effect on optical tube
- Anodized aluminum optical tube
- Sturdy mounting rings and handle assembly with 210mm Vixen/Arca-style dovetail
- Additional dovetail with thumbscrews on handle for guidescope
- William Optics Ultra Cat 76 WIFD 76mm f/4.8 Apochromatic Refractor Telescope (OTA)
- Bahtinov Cap
- M54 Adapter
- M48 Adapter
- Adapter Wrench
- Vixen/Arca-Style Dual-Side Plate
- Dual Mounting Rings with Handle Bar
- 2 x Riser Block
- Allen Key Set
- Soft Carry Case
- Limited 2-Year Manufacturer Warranty
-
Power Tanks & AdaptersEssential
No additional resources available
William Optics Ultra Cat Specs
| Aperture |
76 mm / 3"
|
| Focal Length |
365 mm
|
| Focal Ratio |
f/4.8
|
| Eyepiece |
Sold Separately
|
| Optical Design |
Refractor
|
| Aperture |
76 mm / 3"
|
| Focal Length |
365 mm
|
| Focal Ratio |
f/4.8
|
| Focuser |
Dual-Speed Rack-and-Pinion
|
| Eyepiece |
Sold Separately
|
| Finderscope |
No
|
| Mounting |
Vixen Style
|
| Optical Tube Dimensions |
14.3" / 363 mm (Retracted)
16.3" / 415 mm (Extended) |
| Weight |
11 lb / 5 kg
|
| Package Weight |
16.295 lb
|
| Box Dimensions (LxWxH) |
17.9 x 13.4 x 10.2"
|
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Bulk Discount
| Quantity | Price |
| 2 | ₹ 357577.5 |
| 3-5 | ₹ 353928.75 |
| 5-10 | ₹ 346631.25 |
| 10+ | ₹ 339333.75 |
Bulk discount will be automatically applied during checkout based on quantity.