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Color planetary filters

Neewer 1.25 in seven-filter set (10090864)

Neewer's seven-piece 1.25-inch set: five color filters (red, orange, yellow, green, blue), a lunar and skyglow filter and a circular polarizer, with a sentence for what each color brings out.

Neewer set of seven 1.25 inch telescope filters in a case

Neewer 1.25 in seven-filter set (10090864)

Neewer's seven-piece 1.25-inch set: five color filters (red, orange, yellow, green, blue), a lunar and skyglow filter and a circular polarizer, with a sentence for what each color brings out.

Wratten number
Not published · filters named by color only
Transmission
Not published · the lunar and skyglow filter is described as multi-band, passing a high percentage of visible light
The features each color raises
Red: Mercury and Venus against a daytime sky · Orange: contrast and cloud penetration · Yellow: Mars's polar caps · Green: frost patches and surface fog · Blue: stated in the listing, cut off in the text
Aperture suitability
Not published by the maker.
Set contents
Red, orange, yellow, green and blue color filters · lunar and skyglow filter · CPL (circular polarizer)
Thread size
1.25 in standard filter thread
Amazon reference
B074CXG6SJ
EAN
0191073021785
  • Seven filters for about $23
  • Says what each color is for, planet by planet
  • No Wratten numbers, so colors cannot be compared with other sets

Best for: A first set of planetary filters, bought to find out which color helps on which planet

≈ $23
Check price on Amazon

Specifications

Wratten number
Not published · filters named by color only
Transmission
Not published · the lunar and skyglow filter is described as multi-band, passing a high percentage of visible light
The features each color raises
Red: Mercury and Venus against a daytime sky · Orange: contrast and cloud penetration · Yellow: Mars's polar caps · Green: frost patches and surface fog · Blue: stated in the listing, cut off in the text
Aperture suitability
Not published by the maker.
Set contents
Red, orange, yellow, green and blue color filters · lunar and skyglow filter · CPL (circular polarizer)
Thread size
1.25 in standard filter thread
Amazon reference
B074CXG6SJ
EAN
0191073021785

Seven filters, each with a job

Neewer’s set holds five color filters (red, orange, yellow, green and blue), a lunar and skyglow filter and a circular polarizer, all in standard 1.25-inch cells that screw into most eyepieces.

What each color is for

The listing gives a sentence per filter: red helps Mercury and Venus stand out against a daytime sky; orange raises contrast and penetrates haze; yellow brings out Mars’s polar caps; green enhances frost patches and surface fog. Blue is the usual filter for Jupiter’s belts.

The lunar and skyglow filter

Described as a multi-band filter that cuts glare on the Moon and some sodium streetlight wavelengths.

No Wratten numbers

The colors are named but not numbered, so they cannot be compared exactly with other makers’ filters. See Wratten numbers.

On small telescopes

Dark filters such as blue and green absorb a lot of light. On 70 to 80 mm telescopes, the light yellow and orange filters are usually more useful.

Price and availability

On November 7, 2026, Amazon.com listed it at about $23 from a third-party seller.

Figures as Keepa reported them on the day this page was last updated. Stock and pricing shift without warning.

Prices quoted in this text were read on November 7, 2026. The live price is at the top of the page.

What gets asked before buying

Which filter for which planet?

Neewer says: yellow for Mars's polar caps, red for Mercury and Venus in daylight, orange for contrast, green for frost and fog. Blue is the usual choice for Jupiter's belts and Saturn's cloud bands.

What is the CPL for?

A circular polarizer cuts scattered and reflected light. Neewer pitches it for contrast on the Moon and planets in photographs.

Why do Wratten numbers matter?

They define a color precisely. Without them, one maker's red cannot be compared with another's. See [Wratten numbers](/standards/wratten-numbers/).

What barrel it suits

The rest of this rack

  • Astromania five-position 2 inch filter wheel

    Astromania 2 in five-position filter wheel (FW2M5)

    A manual filter wheel holding five standard 2 in filters in an aluminum housing, with a 2 in adapter for the focuser and a light-tight interior. The Amazon.com listing warns that the focuser needs 22.5 mm (0.89 in) of extra inward travel. About $85 from a third-party seller.

    Positions
    Five, numbered 1 to 5, for any standard 2 in filter
    Housing
    Aluminum, described as stiff enough for heavy cameras, without flexure or tilt
    Light sealing
    Interior stated as light-tight, for imaging without reflections or stray light
    Telescope side
    2 in adapter supplied for the focuser
    Camera side threads
    Not stated on the Amazon.com listing; Astromania's European listings name T-2 and M48
    Inward focus needed
    22.5 mm (0.89 in) from the normal focus position, per the Amazon.com listing; the French and German listings say 20 mm
    Weight
    594 g (1.3 lb), in Amazon's product details
    Storage
    The box doubles as a storage case
    Power and software
    None: a manual wheel
    Amazon reference
    B0140UA9F6
    EAN
    6970019290355
    • Publishes the inward focus it consumes, the figure that decides whether it works at all
    • Light-tight aluminum housing, stated stiff enough for a heavy camera
    • 22.5 mm (0.89 in) of inward focus is more than some refractors can give

    Best for: A Newtonian or Dobsonian imaging train with enough inward focus, where filters change often during a session.

    ≈ $85
    Check price on Amazon
  • Briny River M42 to M48 anodized aluminum step-up ring

    Briny River M42 to M48 step-up ring (390-EG)

    A step-up ring converting the T-2 thread to M48, so that 2 in filters and M48 accessories can be fitted to T-2 components.

    Slot count and filter size
    M42 × 0.75 male — the T-2 thread · M48 × 0.75 female — the 2 in filter thread
    Optical path length
    The listing gives none
    Manual or motorized operation
    A thread adapter — no optics, and not a filter wheel
    Light sealing
    Aluminum alloy, anodized
    Power
    Not published by the maker.
    Software support
    Not published by the maker.
    Amazon reference
    DE B0FM49SGJH · US B0FM48JF46 · GB B0FM48JF46 · FR B0FM48JF46 · IT B0FM48JF46 · ES B0FM48JF46
    EAN
    4895264934644
    • Both threads are named precisely with pitch, which is what an adapter listing must do
    • Anodized aluminum resists the corrosion that ruins a thread left damp
    • No length figure, and every adapter consumes back focus

    Best for: Putting an M48 filter or accessory onto a T-2 threaded component

    Check price on Amazon
  • K&F Concept Nano-X 67 mm natural night filter

    K&F CONCEPT Nano-X Natural Night 67 mm

    K&F Concept's Nano-X Natural Night filter: a 67 mm camera-lens filter that blocks sodium streetlight wavelengths of about 580 to 610 nm, in Japanese optical glass with a 28-layer coating on both faces.

    Blocked wavelengths and published curve
    About 580 to 610 nm blocked, stated · no curve published
    LED and sodium behavior
    Targets the yellow, beige and orange light of common artificial sources (sodium) · LED behavior not stated
    Visual or photographic design
    Photographic: a 67 mm camera-lens filter for night landscape and astrophotography
    Coating and glass
    Japanese optical glass · 28-layer nano coating on both faces · scratch, water, oil and dust resistant
    Thread size
    67 mm (2.64 in) camera-lens thread
    Weight
    68 g (2.4 oz)
    Focal ratio limits
    Not published by the maker.
    Maker reference
    FT011117 (Nano-X series)
    Amazon reference
    B07PG785HC
    EAN
    6936069223248
    • Blocked band published: about 580 to 610 nm
    • 28-layer coating on both faces
    • Camera-lens filter: does not fit a telescope eyepiece

    Best for: Wide-field tracked photography with a 67 mm camera lens under sodium-lit skies

    Check price on Amazon

All color planetary filters