FlatMaster 250


The Pegasus Astro FlatMaster 250 is our bigger flatfield electroluminescent panel. It provides a uniform source of illumination for up to 10”and produces high quality flat field frames for astrophotography and photometric captures.

Dimmable EL Panel

Unlike other EL panels in the market, the FlatMaster can easily adjust its brightness. Forget sheets of paper between your telescope and the panel. Remote control the EL lamp of your panel. Store the brightness per filter and immediately retrieve the value you need.

Please note that FlatMaster can boost its brightness via our supplied software but it will require to be plugged into a USB3 or USB3 SuperSpeed / charging port. A USB3 port can provide twice the current of a normal USB2 port.

FlatMaster 250 on a Celestron Edge 11”

Manual Button

Device has a small push button which sets five (5) levels of brightness. In case you would like to manually operate the FlatMaster, no problem, just click the push button to control the brightness.

One cable operation

Only one cable (USB) is required to provide power and control of your flatpanel.

Standalone Software

Software allows to set filter names and store / retrieve brightness levels of your FlatMaster panel

Native support by most popular imaging software

FlatMaster is supported by most popular imaging software like SGPro, APT Voyager or N.I.N.A

Sequence Generator Pro
Voyager Astrophotography Automation
Astrophotography Tool

In the box

  • Flatmaster 250
  • USB type B 1.8m cable

Technical Specifications

TypeElectroluminescent Panel (White)
DimmableYes – (0-100%)
Manual Push Button5 brightness levels
Usable diameter of circle250 mm / 10 inches
Power requirements5V DC provided by USB type B cable
Size320 mm / 12.6 inches
Weight600g