Omegon #12 2″ colour filter, yellow

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Omegon #12 2″ Filter Yellow

Article No.: 47394
Manufactured by: Omegon

Our price: 32.75 €

1-2 weeks

We have the goods in stock at our store and we can send them immediately.

We do not have the goods physically with us, but it is available from a remote supplier. In this case, we order them immediately and therefore it may take several weeks before we are able to send them to you.

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Omegon #12 2″ colour filter, yellow

Colour filters are among the simplest yet most effective tools for visual planetary astronomy. The Omegon #12 yellow colour filter is a classic choice for observers who want to get the most out of their telescope when studying planetary surface details. Yellow (#12) has historically been one of the most popular shades in planetary filter sets - and for good reason.

How the #12 yellow filter works

The #12 filter transmits yellow and red wavelengths while suppressing blue and violet light. This selective transmission improves contrast and brings out fine details that would otherwise be lost in unfiltered views.

Performance on individual planets

Mars - enhances albedo surface structures, making darker continental regions stand out against bright desert areas.
Jupiter - makes it easier to follow cloud belts (NEB, SEB) and improves contrast between different atmospheric layers.
Saturn - reveals subtle details in the cloud bands and transitions across the ring system.

This filter is intended exclusively for visual observation and is not recommended for photographic applications.

Design and compatibility

The filter is set in a threaded aluminium cell in the standard 2″ format, which screws directly into the eyepiece end of any 2″ eyepiece adapter or eyepiece. The Omegon Basic series offers solid optical quality at a reasonable price, making it an ideal choice both for beginners assembling their first colour filter set and for experienced astronomers looking for a backup or supplementary piece of equipment.

Recommended telescope aperture

The filter is suitable for telescopes from approximately 80 mm aperture and above. On smaller instruments it may unnecessarily reduce the amount of light reaching the eye. Best results are achieved with refractors and Newtonian reflectors using 2″ eyepieces.

Part of a wider filter system

If you regularly observe the planets of the solar system and want to see more detail without investing in expensive specialist filters, the Omegon #12 2″ colour filter is exactly what you need.

The yellow filter also benefits from its versatility within a filter set. Combined with a blue (#80A) or red (#25) filter, you gain a comprehensive toolkit for systematic planetary observation, where each filter highlights different atmospheric layers or surface structures of the planet being studied.

Technical specifications

Parameter	Value
Filter type	Colour filter
Colour / designation	Yellow / #12
Filter size	2″
Cell material	Aluminium, threaded
Intended use	Visual observation only
Recommended aperture	From approx. 80 mm
Series	Omegon Basic