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Flat Panels

Flat frames correct vignetting and dust shadows in your images. They are the calibration frame that most often makes the difference between a clean background and one with dark corners and donuts. A flat panel gives an even, adjustable light source in front of the telescope, so flats are repeatable every night, at any hour, without fiddling with a T-shirt or the dawn sky.

We carry PrimaLuceLab GIOTTO panels and ALTO cover motors, Wanderer Astro WandererCover motorized panels, Pegasus Astro FlatMaster, Optec Alnitak Flip-Flat and Flat-Man, RB Focus eXcalibur and the Baader FlatFieldBox.

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Original price CA$3,131.00 - Original price CA$8,663.00
Original price
CA$3,131.00 - CA$8,663.00
CA$3,131.00 - CA$8,663.00
Current price CA$3,131.00

Baader Planetarium FFB - FlatFieldBox

Available with 450, 650, 850 or 1250mm Clear Aperture Low-Flicker, Dimmable Illumination Full-Spectrum Light Source for All Filters Robust, Observ...

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Original price CA$3,131.00 - Original price CA$8,663.00
Original price
CA$3,131.00 - CA$8,663.00
CA$3,131.00 - CA$8,663.00
Current price CA$3,131.00
Original price CA$875.00 - Original price CA$875.00
Original price
CA$875.00
CA$875.00 - CA$875.00
Current price CA$875.00

Optec Alnitak Flat-Man L Large Flat Fielder

Provides a 330 mm (13 in) evenly illuminated surface Designed for telescopes up to 315 mm (12-1/2 in) in aperture Fits over dew shields and OTAs u...

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Original price CA$875.00 - Original price CA$875.00
Original price
CA$875.00
CA$875.00 - CA$875.00
Current price CA$875.00
Original price CA$2,373.00 - Original price CA$4,053.00
Original price
CA$2,373.00 - CA$4,053.00
CA$2,373.00 - CA$4,053.00
Current price CA$2,373.00

Optec Alnitak Flat-Man XL-2 Large Flat Fielder

Three sizes to cover large apertures: 18x18, 24x24, or 30x30 inch diffusers 255 discrete brightness levels for precise flat-field calibration USB ...

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Original price CA$2,373.00 - Original price CA$4,053.00
Original price
CA$2,373.00 - CA$4,053.00
CA$2,373.00 - CA$4,053.00
Current price CA$2,373.00
Original price CA$804.00 - Original price CA$833.00
Original price
CA$804.00 - CA$833.00
CA$804.00 - CA$833.00
Current price CA$804.00

Optec Alnitak Flip-Flat 270 Flat Fielder

170 mm uniform electroluminescent illumination panel 270-degree motorized arm for fully remote operation Fits telescope tubes and dew shields up t...

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Original price CA$804.00 - Original price CA$833.00
Original price
CA$804.00 - CA$833.00
CA$804.00 - CA$833.00
Current price CA$804.00
Original price CA$238.00 - Original price CA$238.00
Original price
CA$238.00
CA$238.00 - CA$238.00
Current price CA$238.00

Pegasus Flatmaster 150 WiFi -Dimmable EL Flat Panel

Produces uniform flat fields for telescopes up to 150mm (5.9 inches) in aperture Fully dimmable from 0% to 100% for precise exposure control Integ...

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Original price CA$238.00 - Original price CA$238.00
Original price
CA$238.00
CA$238.00 - CA$238.00
Current price CA$238.00
Original price CA$434.00 - Original price CA$434.00
Original price
CA$434.00
CA$434.00 - CA$434.00
Current price CA$434.00

Pegasus FlatMaster 250 Wifi - Dimmable EL Flat Panel

Provides uniform illumination for telescopes up to 250mm (10 inches) Features 2.4GHz Wi-Fi for remote control from any web browser Fully dimmable ...

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Original price CA$434.00 - Original price CA$434.00
Original price
CA$434.00
CA$434.00 - CA$434.00
Current price CA$434.00
Original price CA$574.00 - Original price CA$574.00
Original price
CA$574.00
CA$574.00 - CA$574.00
Current price CA$574.00

Pegasus FlatMaster Neo 120

Produces uniform flat fields for telescopes up to 120mm Fully dimmable from 0-100% for broadband and narrowband filters Retractable servo-driven l...

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Original price CA$574.00 - Original price CA$574.00
Original price
CA$574.00
CA$574.00 - CA$574.00
Current price CA$574.00
Original price CA$693.00 - Original price CA$693.00
Original price
CA$693.00
CA$693.00 - CA$693.00
Current price CA$693.00

PrimaLuceLab ALTO-1 Telescope Cover Motor for GIOTTO up to 220mm

Automates telescope opening and closing Designed for GIOTTO flat field generators up to 220mm USB-C and WiFi connectivity ASCOM CoverCalibrator dr...

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Original price CA$693.00 - Original price CA$693.00
Original price
CA$693.00
CA$693.00 - CA$693.00
Current price CA$693.00
Original price CA$833.00 - Original price CA$833.00
Original price
CA$833.00
CA$833.00 - CA$833.00
Current price CA$833.00

PrimaLuceLab ALTO-2 Telescope Cover Motor for GIOTTO up to 320mm

Motorizes GIOTTO Flat Field Generators For Telescopes with Apertures up to 320mm USB-C and WiFi Connectivity ASCOM CoverCalibrator Compatible 12V ...

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Original price CA$833.00 - Original price CA$833.00
Original price
CA$833.00
CA$833.00 - CA$833.00
Current price CA$833.00
Original price CA$1,253.00 - Original price CA$1,253.00
Original price
CA$1,253.00
CA$1,253.00 - CA$1,253.00
Current price CA$1,253.00

PrimaLuceLab ALTO-3 Telescope Cover Motor for GIOTTO larger than 320mm

Motorizes GIOTTO Flat Field Generators larger than 320mm Enables fully remote telescope opening and closing Connects and is controlled via USB-C o...

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Original price CA$1,253.00 - Original price CA$1,253.00
Original price
CA$1,253.00
CA$1,253.00 - CA$1,253.00
Current price CA$1,253.00
Original price CA$693.00 - Original price CA$693.00
Original price
CA$693.00
CA$693.00 - CA$693.00
Current price CA$693.00

PrimaLuceLab ALTO-3L adapter for OS RiDK 400

Connects ALTO-3L motor to the OS RiDK 400 telescope Enables remote control of GIOTTO 560 flat field generator Provides a secure, model-specific me...

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Original price CA$693.00 - Original price CA$693.00
Original price
CA$693.00
CA$693.00 - CA$693.00
Current price CA$693.00
Original price CA$1,393.00 - Original price CA$1,393.00
Original price
CA$1,393.00
CA$1,393.00 - CA$1,393.00
Current price CA$1,393.00

PrimaLuceLab ALTO-3L Telescope Cover Motor for GIOTTO 560mm

Motorizes the GIOTTO 560mm Flat Field Generator Enables Fully Remote Telescope Opening and Closing USB-C and WiFi Network Connectivity Integrated ...

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Original price CA$1,393.00 - Original price CA$1,393.00
Original price
CA$1,393.00
CA$1,393.00 - CA$1,393.00
Current price CA$1,393.00
Original price CA$11.00 - Original price CA$11.00
Original price
CA$11.00
CA$11.00 - CA$11.00
Current price CA$11.00

PrimaLuceLab Cable Locking Clip (CLC) for ALTO

Secures ALTO-to-GIOTTO Cable Connection Prevents Accidental Disconnections During Remote Operation Official PrimaLuceLab Spare Part Ensures Reliab...

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Original price CA$11.00 - Original price CA$11.00
Original price
CA$11.00
CA$11.00 - CA$11.00
Current price CA$11.00
Original price CA$8.00 - Original price CA$8.00
Original price
CA$8.00
CA$8.00 - CA$8.00
Current price CA$8.00

PrimaLuceLab Cable Locking Clip (CLC) for GIOTTO

Secures USB and Power Cables Designed for PrimaLuceLab GIOTTO and ALTO Prevents Accidental Disconnection Genuine PrimaLuceLab Spare Part Descri...

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Original price CA$8.00 - Original price CA$8.00
Original price
CA$8.00
CA$8.00 - CA$8.00
Current price CA$8.00
Original price CA$385.00 - Original price CA$385.00
Original price
CA$385.00
CA$385.00 - CA$385.00
Current price CA$385.00

PrimaLuceLab GIOTTO 120 Smart Flat Field Generator

Produces uniform illumination for telescopes with apertures up to 120mm Sun-like color temperature for accurate flat field calibration Adjustable ...

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Original price CA$385.00 - Original price CA$385.00
Original price
CA$385.00
CA$385.00 - CA$385.00
Current price CA$385.00
Original price CA$441.00 - Original price CA$441.00
Original price
CA$441.00
CA$441.00 - CA$441.00
Current price CA$441.00

PrimaLuceLab GIOTTO 150 Smart Flat Field Generator

Generates a 150mm diameter circle of uniform, dimmable light Securely fits telescope tubes with an external diameter from 112mm to 174mm 100-step ...

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Original price CA$441.00 - Original price CA$441.00
Original price
CA$441.00
CA$441.00 - CA$441.00
Current price CA$441.00
Original price CA$511.00 - Original price CA$511.00
Original price
CA$511.00
CA$511.00 - CA$511.00
Current price CA$511.00

PrimaLuceLab GIOTTO 185 Smart Flat Field Generator

Illuminated Diameter: 185mm Recommended Telescope Aperture: Up to 150mm Compatible Tube Diameter: 147mm to 210mm Connectivity: USB-C and WiFi Brig...

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Original price CA$511.00 - Original price CA$511.00
Original price
CA$511.00
CA$511.00 - CA$511.00
Current price CA$511.00
Original price CA$609.00 - Original price CA$609.00
Original price
CA$609.00
CA$609.00 - CA$609.00
Current price CA$609.00

PrimaLuceLab GIOTTO 220 Smart Flat Field Generator

Produces an evenly illuminated field for flat calibration frames Controllable via WiFi, USB-C, ASCOM, and PLAY software Adjustable brightness with...

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Original price CA$609.00 - Original price CA$609.00
Original price
CA$609.00
CA$609.00 - CA$609.00
Current price CA$609.00
Original price CA$693.00 - Original price CA$693.00
Original price
CA$693.00
CA$693.00 - CA$693.00
Current price CA$693.00

PrimaLuceLab GIOTTO 255 Smart Flat Field Generator

Smart Flat Field Generator Adjustable Brightness Control Sun-like Color Temperature LEDs Connectivity: USB-C and WiFi Power: 12V DC Input Descr...

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Original price CA$693.00 - Original price CA$693.00
Original price
CA$693.00
CA$693.00 - CA$693.00
Current price CA$693.00
Original price CA$931.00 - Original price CA$931.00
Original price
CA$931.00
CA$931.00 - CA$931.00
Current price CA$931.00

PrimaLuceLab GIOTTO 285 Smart Flat Field Generator

Smart flat field generator for uniform calibration frames Integrated LEDs with a Sun-like color temperature Adjustable brightness controlled via s...

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Original price CA$931.00 - Original price CA$931.00
Original price
CA$931.00
CA$931.00 - CA$931.00
Current price CA$931.00
Original price CA$1,253.00 - Original price CA$1,253.00
Original price
CA$1,253.00
CA$1,253.00 - CA$1,253.00
Current price CA$1,253.00

PrimaLuceLab GIOTTO 320 Smart Flat Field Generator

320mm illuminated panel, suggested for telescopes up to 290mm Sun-like color temperature LED array 100-step digital brightness control Fits tube d...

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Original price CA$1,253.00 - Original price CA$1,253.00
Original price
CA$1,253.00
CA$1,253.00 - CA$1,253.00
Current price CA$1,253.00
Original price CA$1,393.00 - Original price CA$1,393.00
Original price
CA$1,393.00
CA$1,393.00 - CA$1,393.00
Current price CA$1,393.00

PrimaLuceLab GIOTTO 430 Smart Flat Field Generator

Generates flat fields for telescopes up to 430mm in aperture Fits external tube diameters from 392mm to 454mm 100-step digital brightness control ...

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Original price CA$1,393.00 - Original price CA$1,393.00
Original price
CA$1,393.00
CA$1,393.00 - CA$1,393.00
Current price CA$1,393.00
Original price CA$2,786.00 - Original price CA$2,786.00
Original price
CA$2,786.00
CA$2,786.00 - CA$2,786.00
Current price CA$2,786.00

PrimaLuceLab GIOTTO 430 with ALTO-3 Telescope Cover Motor

Automated flat field generator and motorized dust cover Enables fully remote and robotic observatory operation Protects telescope optics from dust...

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Original price CA$2,786.00 - Original price CA$2,786.00
Original price
CA$2,786.00
CA$2,786.00 - CA$2,786.00
Current price CA$2,786.00
Original price CA$2,450.00 - Original price CA$2,450.00
Original price
CA$2,450.00
CA$2,450.00 - CA$2,450.00
Current price CA$2,450.00

PrimaLuceLab GIOTTO 560 Smart Flat Field Generator

Generates flat fields for telescopes up to 560mm in aperture Sun-like color temperature LEDs for accurate calibration USB-C and WiFi connectivity ...

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Original price CA$2,450.00 - Original price CA$2,450.00
Original price
CA$2,450.00
CA$2,450.00 - CA$2,450.00
Current price CA$2,450.00

Choosing a Flat Panel

  • Size: The panel should be larger than the telescope's aperture or dew shield outside diameter.
  • Brightness control: Dimmable panels let you set exposure times long enough to avoid shutter or rolling-readout artefacts.
  • Motorized cover: A cover that doubles as a flat panel closes automatically at the end of a session. Ideal for remote observatories.
  • Even illumination: Electroluminescent and diffused LED panels both work when well designed.

Flat Panels: Frequently Asked Questions

How often should I take flats?

Whenever the imaging train changes: rotation, focus, or a filter swap. Many imagers take flats every session.

Do narrowband filters need brighter panels?

Yes, narrowband needs more light or longer exposures. A dimmable, bright panel helps.

Tired of uneven backgrounds?

Tell us your telescope's outside diameter and control software. We will recommend the right panel.