OVNI-M and OVNI-B are manufactured in France with the most powerful intensifier tubes in the world, type GEN3 " Astronomy Grade ". Designed in our workshop, these "Astronomy Grade" intensifier tubes are one of the many innovations of OVNI Night Vision. This means that they are specially manufactured for astronomy by combining the best performance of GEN3 filmless/unfilmed tubes with the extended lifetime of GEN3 thinfilmed tubes.

They are available in three versions : FOM2100, FOM2400 and FOM2600. The FOM (Figure of Merit) is the main performance measure. A FOM2100 will have a real FOM between 2100 and 2300, a FOM2400 will have a real FOM between 2400 and 2500, a FOM2600 will have a FOM above 2600.

However, the FOM is not the only measure to be taken into account to define the performance of a tube GEN3 « Astronomy Grade » and it is also appropriate to have the highest performance on other values such as EBI, Luminous gain, Luminous Sensitivity, SNR, Limiting Resolution... Each OVNI-M and OVNI-B is delivered with a tube data sheet measuring all its values and guaranteeing that each tube is manufactured according to our own criteria of performances perfectly optimized for astronomy. A description of these measurements and an example of a tube data sheet are available in the OVNI-M / OVNI-B user guides.


In addition, OVNI Night Vision « Astronomy Grade » tube meets other parameters:

★ all our tubes are clean tube meaning without black spot or chicken wire / honeycombs patterns that can interfere with visual observation and present on the majority of civilian and military tubes. 

★ all our tubes have 2 essential features for astronomy. The manual gain control to reduce or eliminate scintillation (mainly when using a narrow bandwidth filter) and the autogated feature to protect the tube in case of high light intensity.

★ all our tubes have a white phosphor perfectly adapted to astronomy since it has a a neutral and natural color, much better than the green phosphor (delivering a greenish tint during observation).

With the help of the video below, the operation of the intensifier tube can be explained in 3 steps:

  1. The photons composing the ambient light (visible and near infrared) are transformed into electrons by the photocatode.
  2. The MCP (MicroChannel Plate) multiplies electrons by thousands. About 70,000 times more.
  3. The generated electrons will hit the white phosphorus and be transformed into photons in the same original alignment before passing through the eyepiece.