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Solar filters

ihwfaityu Solar film sheet 140 mm

A solar film sheet of 140 mm, sold as material for mounting, with a size in the title and no density figure anywhere.

ihwfaityu 140 mm solar film sheet

ihwfaityu Solar film sheet 140 mm

A solar film sheet of 140 mm, sold as material for mounting, with a size in the title and no density figure anywhere.

Cell fit and outside diameter
140 mm, from the title
Film or glass construction
Solar film sold as a sheet — mounting is the buyer’s job · The listing gives none anywhere in the listing
Cited standard
Not published by the maker.
Mounting security
Not published by the maker.
Image colour
Reddish-yellow Sun, as the maker states it
Supplied storage
Not published by the maker.
Amazon reference
B0HFJK63DD (same reference on 1 Amazon marketplace)
EAN
8003890012148
  • A size is published, which one of the three identical listings manages and another does not
  • 140 mm covers the aperture of most beginner reflectors with margin for a cell
  • No optical density figure, which is the defining property of a solar film

Best for: Covering a telescope of about 130 mm aperture, by somebody who will build the cell

≈ €36
Check price on Amazon

Specifications

Cell fit and outside diameter
140 mm, from the title
Film or glass construction
Solar film sold as a sheet — mounting is the buyer’s job · The listing gives none anywhere in the listing
Cited standard
Not published by the maker.
Mounting security
Not published by the maker.
Image colour
Reddish-yellow Sun, as the maker states it
Supplied storage
Not published by the maker.
Amazon reference
B0HFJK63DD (same reference on 1 Amazon marketplace)
EAN
8003890012148

One figure out of two

The size is published: 140 mm. The optical density is not. Of the three identical-text film listings on this shelf, this is the only one that says how large the sheet is — which still leaves the more important number missing.

What 140 mm covers

Enough for a telescope of about 130 mm aperture with margin for a cell. Anything larger needs a larger sheet, and the margin is not optional: the film has to be held flat by something that grips beyond the light path.

The shared description

The five bullets are the same as those on two other sheets sold here under different names. They describe a category of material, not this example of it.

What this page will not say

Whether it is safe to use. It reports what the listing publishes, states what it does not, and defers to the instructions supplied with the product for mounting, inspection and storage.

Availability

German Amazon store sat at about 36 € on the day of the survey.

American, British, French, Italian and Spanish Amazon stores gave no result whatever, so the buy button there opens a search rather than an empty page.

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 17 September 2026. The live price is at the top of the page.

What this fits

More solar filters

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    POFET Eyepiece-end solar filter

    A 1 in aluminium-celled solar filter that screws onto the eyepiece end of the light path rather than over the telescope’s aperture.

    Cell fit and outside diameter
    2.5 cm (1 in), from the title
    Film or glass construction
    Threads onto an eyepiece — it does not fit over the front of the telescope · Aluminium alloy with a standard thread, per the maker · The listing gives none anywhere in the listing
    Cited standard
    The listing gives none anywhere in the listing
    Mounting security
    Not published by the maker.
    Image colour
    Not published by the maker.
    Supplied storage
    Not published by the maker.
    Amazon reference
    B08M9HY7DC (same reference on 5 Amazon marketplaces)
    EAN
    0703355530153
    • An aluminium cell rather than a plastic one
    • A standard thread means it will engage a normal eyepiece barrel
    • No density, no transmission and no waveband figure of any kind is published

    Best for: Nobody, until the manufacturer’s own instructions and specification have been read

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  • Omegon full-aperture solar filter in its moulded plastic frame

    Omegon Solar filter for 114 mm telescopes

    A full-aperture solar filter supplied ready-mounted in a moulded plastic frame with an ND5 solar film, made to push directly onto Omegon Basic telescopes.

    Cell fit and outside diameter
    Omegon Basic telescopes, 114 mm; the maker adds “or comparable models” · The listing gives none as a figure
    Film or glass construction
    Full-aperture filter — it fits over the front of the telescope · Solar film with a filter factor of ND5, as the maker states it · Moulded plastic, supplied already assembled
    Cited standard
    Not published by the maker.
    Mounting security
    None, per the maker
    Image colour
    Not published by the maker.
    Supplied storage
    Not published by the maker.
    Amazon reference
    B012FT844C (same reference on 5 Amazon marketplaces)
    EAN
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    • Supplied ready-assembled, so there is no film to cut or mount
    • The film density is named as ND5 rather than described
    • No tube outside diameter figure is published — only a model family

    Best for: An Omegon Basic 114 mm, or a tube whose front diameter has been checked against one

    ≈ £28 / €29
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  • ZBIianxer solar film sheet for telescope use

    ZBIianxer Solar film sheet

    A solar film sheet sold on portability, with neither an aperture range nor an optical density anywhere in the listing.

    Cell fit and outside diameter
    The listing gives none anywhere in the listing
    Film or glass construction
    Solar film sold as a sheet — mounting is the buyer’s job · The listing gives none anywhere in the listing
    Cited standard
    Not published by the maker.
    Mounting security
    Not published by the maker.
    Image colour
    Reddish-yellow Sun, as the maker states it
    Supplied storage
    Not published by the maker.
    Amazon reference
    B0H4DKVQW1 (same reference on 6 Amazon marketplaces)
    EAN
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    • Film can be cut to whatever aperture the buyer needs
    • The maker mentions cleaning with a cloth or water, which most film listings do not
    • Neither a size nor a density is published — two omissions where one would be too many

    Best for: Nobody who has not already decided what density and size they need

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The rest of this rack

  • EBTOOLS Canon EOS T-ring with 1.25 inch telescope coupling

    EBTOOLS T-ring and 1.25 in coupling for Canon EOS

    A set containing a Canon EOS T-ring and a 1.25 in to M42 coupling, with an inner ring that rotates to orient the camera.

    Camera mount
    A long list of Canon EOS and Rebel models is given in the first bullet
    T2 thread
    Not published by the maker.
    Flange distance
    Not published by the maker.
    Prime focus or projection design
    A T-ring for Canon EOS and a 1.25 in to M42 coupling, per the maker · 1.25 in (31.7 mm)
    Blackening
    Not published by the maker.
    Material
    Anodised aluminium
    Amazon reference
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    EAN
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    • Both halves of the chain are supplied together, which is rarer than it should be
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    Best for: A Canon EOS owner who wants both halves of the coupling in one purchase

    ≈ £15 / €16
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    SVBONY 1.25 in M42 projection adapter

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    Camera mount
    Canon EOS and Rebel SLR and DSLR with a T2 ring; the maker excludes EOS-M models
    T2 thread
    M42 × 0.75 both male and female
    Flange distance
    68 mm extended, as the maker publishes it
    Prime focus or projection design
    Projection adapter with an extension barrel · 1.25 in
    Blackening
    Fully threaded inside to minimise reflections, per the maker
    Material
    All metal aluminium
    Amazon reference
    B01LWJ2Z3Y (same reference on 5 Amazon marketplaces)
    EAN
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    • Fully threaded inside, which is a stronger anti-reflection measure than matt paint
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    Best for: Eyepiece projection on a telescope with generous focuser travel

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    A mechanical transition ring letting T2-threaded telescopes and accessories be fitted to a camera with an M42 screw mount, with manual focus only.

    Camera mount
    T2 equipment onto an M42-mount camera — the reverse of a standard astronomy T-ring
    T2 thread
    The pitches of the two threads are not published
    Flange distance
    Not published by the maker.
    Prime focus or projection design
    Purely mechanical transition ring, per the maker
    Blackening
    Not published by the maker.
    Material
    Not published by the maker.
    Amazon reference
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    EAN
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All solar filters