Optec - Alnitak Flip-Flat 270+ (Plus) Calibration Panel

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The Optec Alnitak Flip Flat 270+ (Plus) provides a flat, electroluminescent field to calibrate for imaging. 

Compatible with dew shields measuring up to 194mm in diameter, and is recommended for dew shields between 150mm and 206mm.  

170mm lamp diameter with a diffuser diameter of 195mm. 

Weighs 1.6 lbs. 


Optec Alnitak Flip-Flat 270 Plus Calibration Panel

Optec has collaborated with Chris White from Overcast Observatory to revamp the mechanical design of the Flip-Flat electroluminescent calibration panel. The result? The new Alnitak Flip-Flat 270, features an enhanced design that allows for a complete 270-degree rotation of the flat field lamp panel, seamlessly aligning it with the side of the telescope OTA tube.

The Flip-Flat 270+ (stk# 19054) is compatible with OTA dew shields measuring up to 8-1/8" (206mm) in diameter, and comes equipped with proven inverter electronics and a 167mm EL lamp, maintaining the quality and performance of the Gen2 Alnitak Flip-Flat.

This innovative mechanical design is adaptable to other variants such as the Flip-Mask or Remote Dust Cover. Additionally, Overcast Observatory offers custom 3D-printed mounting rings tailored to fit various telescope tube diameters, eliminating the need for industrial zip ties previously included with every Flip-Flat purchased through Optec.


Alnitak Flip-Flat 270 Specifications

  • Lamp Diameter: 6.7" (170mm)
  • Diffuser Diameter: 7.7" (195mm)
  • Control Box Dimensions: 5.3" x 4.2" x 2.7" (135 x 107 x 69mm)
  • Weight: 1 lb. 6 oz. (0.6 kg)
  • Pivot Arm Length: 6.1" (155mm)
  • Range of Pivot Arm: 270-degrees
  • Power Requirements: 5 VDC provided by USB interface
  • Recommended OTA Dewshield diameter: 4" to 7" (100 to 178mm)

More Information

More Information
Brand Optec
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In The Box
  • Flip-Flat 270 Plus Flat Fielding Lamp and Dust Cover
  • 5m (16.25-ft.) USB-2 Type A-B Cable
  • Two Industrial Strength Mounting Straps
  • "Demystifing Flat Fields" Reprint from Sky & Telescope
  • Quick Start Guide


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