Cloud Break Optics

AstroTech Field Flattener Extender Tube (19647)

AstroTech Field Flattener Extender Tube (19647) - Main image
$61.75 $95 In stock

Category: Astrophotography Accessories

Description

The #19647 Field Flattener Extender Tube allows insertion of AstroTech Field Flattener lenses behind Optec equipment with OPTEC-2300 receivers, such as the TCF-S and the IFW.

Specifications

  • Outside Diameter:  2.69" (68.3mm)
  • Overall Height: 1.54" (39.1mm)
  • Clear Aperture:  1.7"  (43.2mm)
  • Weight: 3.68 oz (104.3 g)
  • Back-focus Usage: 1.29" (32.8mm)
  • Telescope Side Connection: OPTEC-2300 Dovetail
  • Camera Side Connection::  OPTEC-2300 Receiver
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When it ships

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Scarlett U. ★★★★★

Screwed right into my Optec focuser without any fuss. The build quality is solid, and it holds the flattener securely at the correct distance for crisp stars edge-to-edge.

Lily R. ★★★★★

Was a bit worried about compatibility, but the OPTEC-2300 receiver threads matched perfectly with my existing setup. Now my field flattener sits exactly where it needs to for sharp stars corner-to-corner.

Mia ★★★★★

This thing finally let me get my field flattener properly spaced behind the Optec focuser—threads matched up perfectly with no wobble.