| ₹ 526900.0 includes GST and import duties. | |
| B2B customers can avail ₹ 80352.25 ITC on this product | |
| 100% Secure Payments | 100% Genuine product | |
| The product is eligible for Free Shipping |
Description
From the high-end Petzval lens on the optical tube assembly to the precise strain-wave gearing of the mount, the William Optics Cat 51 WIFD f/4.9 Apochromatic Telescope with ZWO AM5N Mount Kit from will help you capture brilliant images of the night sky. The telescope features an innovative center-of-tube focus mechanism and creates an image circle large enough for full-frame camera sensors, while the sturdy, compact mount effortlessly moves the scope to track your subject throughout the exposure. This kit includes the OTA and the mount; you'll only need to supply a tripod.
Designed for stargazing and astrophotography, the Cat 51 WIFD 51mm f/4.9 Apochromatic Refractor Telescope from William Optics uses an unorthodox design for supporting heavy cameras and delivers a wide field, a fast focal ratio, and 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. A four-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/4.9 focal ratio and 250mm focal length for wide field of view and fast exposure times
- Apochromatic Petzval-style four-element lens produces rich views with minimal chromatic aberration
- Sharp image with no need for a separate field flattener
- Supports 48mm image circle for full-frame, APS-C, and micro four thirds cameras
- Dust cover with integrated Bahtinov mask allows for fine focusing on stars
- Built-in tilt adapter
- Camera angle rotation device
- M54 female thread for cameras, accessories, or eyepiece diagonals
- 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
- 0-23mm focus travel, ruler to 30mm Dial-style thermometer for gauging temperature effect on optical tube
- Anodized aluminum optical tube
- Sturdy mounting ring and handle assembly with 210mm Vixen-style dovetail
- Additional dovetail with thumbscrews on handle for guidescope or other accessory
Designed with a strain wave gear reducer and synchronous belt for precise control, the ZWO AM5N Harmonic Equatorial GoTo Mount offers alt-az operation for observation and go-to equatorial tracking for astrophotography via a smartphone app or an ergonomic hand controller. The mount weighs just 12.1 pounds but can support payloads up to 33 pounds on its own or 44 pounds with a user-supplied counterweight and shaft. A brake system ensures the mount won't topple in the event of a power failure. The mount runs on a user-supplied 12V, 5A power supply and is compatible with ASCOM and ZWO's ASIAIR platforms.
- Weighs 12.1 lb
- Supports 33 lb without counterweight
- Payload increases to 44 lb with optional 11 lb counterweight
- 3/8"-16 tripod mount
- Strain-wave gearing system comes with very low ?10" periodic errors, smooth gearing, and high torque
- Reduction ratio is 300:1
- Each mount is tested and shipped with a periodic error curve report
- Capable of both equatorial and alt-azimuth modes
- Suitable for both visual and imaging
- Elevation angle of 0-90?
- Can be used anywhere from the equator to the polar regions
- Red light is displayed for equatorial mount mode
- Green light is displayed for alt-azimuth mode
- If the mount has no synchronization, the indicator light flashes alternately red and green, and the corresponding color indicator light will be displayed according to the mode after synchronization
- Control via the included hand controller or from your phone or tablet using the AM5 app
- App offers an onscreen joystick combined with convenient tools including Best Objects of the Evening, a built-in star map with real-time display and GOTO functions
- There is no need to connect to a computer?the mount and hand controller connect via Wi-Fi
- The mount is compatible with ASCOM, INDI, ASIAIR, and other platforms
- In the event of power failure, brakes are instantly applied to prevent the telescope and equipment from falling and resulting in damage or injury
- 12 VDC input and USB-C ports on saddle reduce cable tangling
- 12 VDC output supplied from the main body power socket, this outlet can share power with devices such as ASIAIR
- The mount is powered by a user-provided 12V, 5A power supply
Items Included
- William Optics Cat 51 WIFD 51mm f/4.9 Apochromatic Refractor Telescope (OTA Only)
- Bahtinov Cap
- M48 Cap
- Mounting Ring with Handle
- Dual Mounting Plate
- Mounting Ring Handle Bar
- Allen Key Set
- Soft Carry Case
- Limited 2-Year Manufacturer Warranty
- ZWO AM5N Harmonic Equatorial GoTo Mount
- Hand Controller
- Coiled Hand Controller Cable (23.6')
- USB-B to USB-A 2.0 Cable (6.6')
- M6 Allen Key
- Periodic Error Curve Report
- Carry Case
- Limited 2-Year Manufacturer Warranty
Not Included
-
AC AdaptersEssential
Additional Resources
William Optics Cat 51 WIFD 51mm f/4.9 Apochromatic Refractor Telescope (OTA Only)
| Optical Design |
Apochromatic Doublet Refractor
|
| Aperture |
51 mm / 2"
|
| Focal Length |
250 mm
|
| Focal Ratio |
f/4.9
|
| Focuser |
Dual-Speed Rack-and-Pinion
|
| Weight |
5.25 lb / 2.38 kg
|
| Optical Design |
Apochromatic Doublet Refractor
|
| Aperture |
51 mm / 2"
|
| Focal Length |
250 mm
|
| Focal Ratio |
f/4.9
|
| Focuser |
Dual-Speed Rack-and-Pinion
|
| Diagonal |
No
|
| Finderscope |
No
|
| Mounting |
Vixen Style
|
| Optical Tube Dimensions |
13.6" / 346 mm
|
| Payload Capacity |
No
|
| Altitude Adjustment |
No
|
| Latitude Adjustment |
No
|
| Counterweight |
No
|
| Weight |
5.25 lb / 2.38 kg
|
| Package Weight |
8.935 lb
|
| Box Dimensions (LxWxH) |
16.6 x 10.7 x 9.5"
|
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 | ₹ 516362.0 |
| 3-5 | ₹ 511093.0 |
| 5-10 | ₹ 500555.0 |
| 10+ | ₹ 490017.0 |
Bulk discount will be automatically applied during checkout based on quantity.