ASBF: AstroSolar Binocular Filter OD 5.0 (50mm - 100mm)

More Views

Application Images

Images uploaded by Customers

Add Your Review with Images
ASBF: AstroSolar Binocular Filter OD 5.0 (50mm - 100mm)

Please choose product variant below to see price and SKU number

€ 38.00 Price excl. German VAT tax (19%): € 31.93

Please choose product variant below to see stock status  

Baader Solar Filter Finder Tool
  • Safe solar observation with all types of binoculars / safe solar photography with all camera lenses
  • AstroSolar Safety Film OD 5.0, mounted stress free in high-cality cell
  • One side of filter cell shortened for use with binoculars. Two filters are mandatory for binocular observation, mentioned price is for one piece only
  • Scope of supply: ASBF Filter (Apertures 50 to 100mm) come with three centering bolts of 13mm diameter and 24 mm height, adjustable to the tube diameter of your binocular. In addition three safety straps with glue-pads and mounting instructions
Important note: Please use our Solar Filter Finder Tool to find the fitting filter for your instrument.

* Required Fields

€ 38.00 Price excl. German VAT tax (19%): € 31.93

Product Questions and Answers

Do you have a question about this product? Then we would like to ask you to first look through the existing questions and answers, most likely your question has already been answered and you will get the desired information much faster this way. Your question is not listed? Then please click on the button "Ask a question".

Sort by ASC
What is the full diameter, including the housing for the ASBF 60 Filter
Question by: William Edwards on Apr 4, 2022 5:01:00 PM | 1 Answer(s)

Rating of Question

Hi. I want to shoot the solar esclipse and I need a filter. There are just a couple of things I want to make sure of before I purchase this. Is this filter good for capturing an image or only for observation? Also, my camera lens is 58mm, so would this filter fit my lens properly? Thanks.
Question by: Gina on Jul 21, 2017 3:46:00 PM | 1 Answer(s)

Rating of Question

i have a binocular that is 127mm O.D. and 114.3mm I.D. which filter should i get the ASBF 80 or the 100?
Question by: andy on May 27, 2023 6:45:00 PM | 1 Answer(s)

Rating of Question

On my 140mm Newt I have an Astrozap Baader which I love, is this filter made of the same material and density?
Also, which size should I choose for a Zenithstar 73EDii?

Thanks in advance
Question by: Adriano on May 1, 2021 9:53:00 AM | 1 Answer(s)

Rating of Question

Your site recommends the ASBF 60 for my Celestron skymaster DX 8x56 binoculars.
The range of fitment for the ASBF 50 says that it covers up to 70 mm. I am being told that the tube diameter on the binocular is 65 mm. Why is this one not recommended as well?
Question by: William Edwards on Mar 29, 2022 8:01:00 PM | 1 Answer(s)

Rating of Question



Baader Solar Filter - Features

Baader Solar Filter – the Standard

Mounted Filters with Baader AstroSolar Safety Film OD 5.0

After 15 years of offering AstroSolar film sheets as DIY-product, this system of Baader Solar Filters™ is designed to retain the true optical quality of the diffraction limited AstroSolar Safety Film.

Baader Solar Filters provide a professional and secure solution to observe and image the Sun using AstroSolar® Safety Film OD 5.0. Many ready made filters do stretch the filter material like a drumhead in order to make it look like a piece of glass – this absolutely does destroy the image quality, rendering the film useless for high magnification work. AstroSolar must be mounted entirely stress free in order to perform like a high precision planeoptical window. It sounds like a contradiction with traditional perception of quality, but AstroSolar must show slight ripples! Only when the film is being put under stress by an improper cell mount it performs just like any single side coated glass-filter made of untreated floatglass.

ASBF - AstroSolar Binocular Filter


Application examples

ASBF (AstroSolar Binocular Filter) – Baader Solar Filter for binoculars and camera lenses

This Filter Family is ideally suited for observation of the sun with binoculars (two piece needed), as well as for camera lenses. The AstroSolar filter material is mounted onto a plastic ring whereas the plastic ring itself works as stabilizing element for the filter cell. This still plastic ring is mounted onto the aluminum front frame. The thermal expansion coefficient of the plastic and the film are similar. This category is essentially similar to the ASSF in terms of mechanics. The only difference is that one side is cut off in order to make them usable on any binocular – even when the bridge is nearly closed. (depending on the binocular type).


ASBF Scope of supply
Included: 1x ASBF Filter (Apertures 50 to 100mm), three centering bolts of 13mm diameter and 24 mm height – adjustable to the tube diameter of your binocular. In addition three safety straps with glue-pads and 32-page instruction manual

All Baader Solar Filters feature:

  • original Baader AstroSolar® Safety Film (OD 5.0), cell mounted and quality inspected by skilled members of our staff
  • clear white IR-rejecting front ring with reinforcing raised edges along the outer and inner circumference, designed to protect the solar filter material from contact with any sharp metal edge
  • 3 injection molded centering-bolts with threaded brass inserts to center the filter-cell in front of the tube opening. These bolts come in three different diameters, depending on the filter category (ASTF/ASSF/ASBF). Each bolt features injection molded rubber grip-faces, shaped to easily slide onto any telescope tube – but to come off very hard
  • no tool mounting and adjustment of the centering bolts to fit a wide variety of mechanical tube diameters. Bolts made to contact the outside or optional (if appropriate) the inside of the optical instrument tube
  • non-rotating sliding fasteners made from aluminum that hold the centering bolts. These metal sliders are equipped with a machined indicator to point towards the adjustment index
  • additional Phillips screws are integrated into the sliding fasteners, so that the centering bolts can be firmly fastened with a screw driver if preferred by the user
  • index scale provided beside each adjustment slot – adjacent to each sliding fastener, for fast and repeatable adjustment of the filter cell onto different telescope tubes
  • black sliding washers supplied to securely cover the full length of the adjustment slots in the aluminum frame – for blocking sunlight from passing trough the filter cell beside the filter area
  • three security straps included, to secure the position of the filter cell with Velcro-adhesive pads. A safety feature to absolutely ensure a secure fit in front of the telescope under any circumstances (gust of wind asf)
  • warning text printed onto the front side of each filter cell: Read the Instructions before use
  • cardboard gift box fit for safely shipping the filter
Related Articles

Additional Information

Technical Data not yet specifiedPlease choose product variant from dropdown above to see technical data of your chosen product
Overall Average Rating:
5 reviews
5 star
4 star
3 star
2 star
1 star
  • Date - Newest First
  • Date - Newest First
  • Date - Latest First
  • Highest Rated
  • Lowest Rated
  • Most Helpful

5 Item(s)

Hans Zekl 81/03/2024 22/03/202410:14
  • Rating:
ASBF: AstroSolar Binokular Filter OD 5.0 (50mm - 100mm)
Praktisch, gute Verarbeitung
Show more comments (-5) Hide comments
Franz J. 26/01/2023 27/01/202309:01
  • Rating:
Lieferung sehr schnell - Teile komplett und gut sortiert verpackt - Verpackung kann auch als Aufbewahrung verwendet werden - Solarfilter passen perfekt auf das Kameraobjektiv und auf das Fernglas
  • solide Verarbeitung
Show more comments (-5) Hide comments
Hans 100/04/2022 11/04/202210:16
  • Rating:
der Filter läßt sich flexibel und gut montieren
er hilft gute Aufnahmen zu machen
Show more comments (-5) Hide comments
Jürgen Strohal 303/10/2015 31/10/201517:29
  • Rating:
ASBF Solarfilter
Das ASBF Solarfilter erreichte mich nur 2 Tage nach der Bestellung rechtzeitig vor der Sonnenfinsternis. Die Verpackung war sicher, die Montage sehr einfach und die Bildqualität sehr gut – nichts auszusetzen!
Show more comments (-5) Hide comments
S.K. 303/10/2015 31/10/201516:49
  • Rating:
ASBF – Baader Solar Filter
Ich habe bereits die Totale SoFi 1999 in Deutschland mit einem selbst gebauten Filter fotografiert.
Das hier vorliegende Teil ist natürlich was ganz anderes was Qualität und Handhabung angeht.

Diese Bewertung schreibe ich, NACHDEM ich das Teil für die SoFi benutzt habe.

Das Ergebnis der Fotos: Genau so gut wie mit dem selbst gebastelten.
Aber die Handhabung und die Qualität der Verarbeitung ist mal eine ganz andere Hausnummer.
Und von der Langlebigkeit (man muss schon sorgfältig damit umgehen) reicht die ein Leben lang.

Sehr zu empfehlen!
Show more comments (-5) Hide comments

5 Item(s)

What kind of abuse are you reporting?
    Please, wait...