Description
The stunning new William Optics Gran Turismo 71 Apo is the new jewel of the apochromatic refractor world. The new GT71 features a 3-element objective using high-quality FPL-53 extra-low dispersion glass that reduces any secondary spectrum to an unbelievable degree.
Optically Unbeatable
· Triplet air-spaced objective (FPL-53) in adjustable CNC machined ultra high precision lens cell.
· Extremely sharp with excellent color correction.
· Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces
· This f/5.9 lens is ideal for astrophotography.
2″ V-power Focuser
- Extra-smooth new 2″ Crayford focuser with 1:10 dual speed: a treat to use during astrophotography. No image shifting (up to 15Lb.)!
- Comes with two locking screws on angled positions for heavy load applications.
- Stainless steel reinforcement inserts on both sides and on the back to allow heavy loading without problems.
- Graduated scale for precise camera alignment.
Simply Beautiful Finish
- Quality fit and finish: powder-painted white CNC-machined aluminum tube, gold trim finish, retractable dewshield, dewshield cap.
- Top quality anodizing.
- Very compact for carrying on flights.
Accessories NOT Included:
– Finder Bracket (Optional)
– Finder Scope (Optional)
Specifications
|
Aperture |
71mm |
|
Focal Ratio |
F/5.9 |
|
Focal Length |
420mm |
|
Resolving Power |
1.62” |
|
Limiting Magnitude |
11.1 |
|
Objective Type |
3 elements Air-spaced with FPL53 glass |
|
Lens Shade |
Retractable |
|
V-power Focuser |
2″ crayford, 1:10 fine focus, 2”-1.25″ Adapter |
|
Type of mount |
Includes mounting rings and Vixen style dovetail |
|
Tube Diameter |
82mm （dew shield tube 92mm） |
|
Tube Length |
(325 mm) Fully Retracted (427 mm) Fully Extended |
|
Tube Weight |
2.2kg |
All WO refractors objective are double tested and inspected before shipping to our customer, these telescopes are free of coma and astigmatism.
Fast Shipping and Professional Packaging
Due to our longstanding partnership with UPS FedEx DHL as well as other major international carriers, we are able to provide various shipping options. Our warehouse personnel will pack each item according to our strict requirements. Before they are shipped, your goods will be thoroughly examined and secured. Everyday, we send to thousands of clients in different countries. This is a sign of our determination to become the largest online retailer globally. The warehouses and centers for distribution are in Europe, as well as the USA.
Note that orders containing more than one item will be processed according to the specific item.
Before shipping before shipping, we'll inspect thoroughly the items you've purchased. Most orders are delivered within 48 hours. The estimated delivery time is between 3 and 7 days.
Returns
The inventory is always changing and we do not fully manage it because of the fact that many parties are involved, including our warehouse and factory. Therefore, the actual inventory could change at any time. It's possible that your order will be unable to fill when you have placed the order.
Our policy is valid for 30 days. If 30 days have gone without a trace since the purchase and we are unable to offer an exchange or refund.
In order for your item to be returned it must be in its original packaging, unopened and in the same condition as when you received it in. It must also be in its original packaging.
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