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Astro-Physics 2.7-inch Threaded Extension Rings, Adapters and Retaining Rings Optec

Name: Stay Fit and Active: Astro-Physics 2.7-inch Threaded Extension Rings, Adapters and Retaining Rings Optec
SKU: mode_779061330009
Price: 66.00 USD
Availability: InStock

Original price was: $ 165,00.Current price is: $ 66,00.

Size

Clear

SKU: mode_779061330009 Category: Astrophotography Accessories Tag: neaf2020

Description

Telescope Adapters and Extensions for the AstroPhysics 2.7 thread

Extensions, Adapters and Retaining Rings

The ubiquitous AP2.7 inch thread has become an astronomy industry standard thanks to the tireless efforts of Roland and his team at Astro-Physics. Optec has produced an extension set and a few new adapters in an effort to extend this industry standard.

Optec’s AP 2.7-inch extension tubes feature female threads on one end with male threads on the opposite end with knurled bases to help attach and detach these tubes. The extensions can be combined and stacked. We believe our four and five piece sets will provide all the needed extension for fixed focal length telescopes with 1/4″ (6.35mm) increments using a minimum number of pieces.

All extensions and mounts are made from high strength 6061 aluminum alloy and black anodized. Anti-reflection threading and internal baffles on the largest extension tube help minimize internal reflections. All internal surfaces are painted and baked with a non-reflecting ultra-flat black paint.

Specifications

Spacer Lengths Available: 1/2″, 3/4″, 1″, 1-1/2″, and 3″
Clear Aperture: 2.52″ (64mm)

Extension Tube Sets

Stock #19880
AP2.7 Extension Tube Set, 4-piece set

Includes: 1/2″, 3/4″, 1″, and 1-1/2″
Possible spacer combinations:
0.5″ through 3.25″ with 1/4-inch increments plus 3.75″ with all spacers combined. (See Table below for combinations.)

Stock #19881
AP2.7 Extension Tube Set, 5-piece set

Includes: 1/2″, 3/4″, 1″, 1-1/2″, and 3″
Possible spacer combinations:
0.5″ through 6.25″ with 1/4-inch increments plus 6.75″ with all spacers combined. (See Table below for combinations.)

Individual Extension Tubes and Retainers

Stock #19882 AP2.7 Extension – 1/2″ Length Overall Height: 0.88″ (22.4mm) Clear Aperture: 2.52″ (64mm) Weight: 1.0 oz (30 g) Back-focus Usage: 0.50″ (12.7mm)
Stock #19883 AP2.7 Extension – 3/4″ Length Overall Height: 1.13″ (28.7mm) Clear Aperture: 2.52″ (64mm) Weight: 1.4 oz (40 g) Back-focus Usage: 0.75″ (19.1mm)
Stock #19884 AP2.7 Extension – 1″ Length Overall Height: 1.38″ (35.0mm) Clear Aperture: 2.52″ (64mm) Weight: 1.8 oz (55 g) Back-focus Usage: 1.00″ (25.4mm)
Stock #19885 AP2.7 Extension – 1-1/2″ Length Overall Height: 1.87″ (47.5mm) Clear Aperture: 2.52″ (64mm) Weight: 2.4 oz (70 g) Back-focus Usage: 1.50″ (38.1mm)
Stock #19886 AP2.7 Extension – 3″ Length Overall Height: 3.38″ (85.8mm) Clear Aperture: 2.52″ (64mm) Weight: 8.2 oz (230 g) Back-focus Usage: 3.00″ (76.2mm)
Stock #19887 AP2.7 Male-to-Male Adapter Includes #19888
Stock #19888 AP2.7 Retaining Ring Overall Height: 0.10″ (2.5mm) Outside Diameter: 3.5″ (88.9mm) Clear Aperture: 2.69″ (68 mm) Weight: 0.6 oz (15 g) Anodize: Gold

Target Extension	Spacers Required	AP2.7 Spacer Stock Numbers	DSI 3.5×24 Stock Numbers
0.50”	½”	19882	19891
0.75”	¾”	19883	19892
1.00”	1”	19884	19893
1.25”	½” + ¾”	19882, 19883	19891, 19892
1.50”	1-½”	19885	19894
1.75”	1” + ¾”	19884, 19883	19893, 19892
2.00”	1-½” + ½”	19885, 19882	19894, 19891
2.25”	1-½” + ¾”	19885, 19883	19894, 19892
2.50”	1-½” + 1”	19885, 19884	19894, 19893
2.75”	1-½” + ¾” + ½”	19885, 19883, 19882	19894, 19892, 19891
3.00”	3”	19886	19895
3.25”	1-½” + 1” + ¾”	19885, 19884, 19883	19894, 19893, 19892
3.50”	3” + ½”	19886, 19882	19895, 19891
3.75”	3” + ¾”	19886, 19883	19895, 19892
4.00”	3” + 1”	19886, 19884	19895, 19893
4.25”	3” + ¾” + ½”	19886, 19883, 19882	19895, 19892, 19891
4.50”	3” + 1-½”	19886, 19885	19895, 19894
4.75”	3” + 1” + ¾”	19886, 19884, 19883	19895, 19893, 19892
5.00”	3” + 1-½” + ½”	19886, 19885, 19882	19895, 19894, 19891
5.25”	3” + 1” + ¾” + ½”	19886, 19885, 19883, 19882	19895, 19893, 19892, 19891
5.50”	3” + 1-½” + 1”	19886, 19885, 19884	19895, 19894, 19893

Size	19880, 19881, 19882, 19883, 19884, 19885, 19886, 19887, 19888

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.