Baader 2459286 - Astro Solar Safety Film - visual ND 5.0 - ECO-size 140x155 mm
With this film, you can build safe high-quality solar filters for all optics - from the naked eye to a bigger amateur telescope.
ND 5.0 transmits only 1/100,000 of the sunlight Optimal protection through double-sided filter coating High safety: In opposite to a glass filter, this film cannot break. This one is extremely tear-resistant, too. Exceptional optical quality: The Astro Solar foil has an optical performance that is superior to Mylar foils. The image is sharp and contrasty. Colour neutral: the natural colour of the sun is kept. Reasonable priced: a similar glass filter would cost a multiple. Delivered with a manual for building your own filter
- Details..
- Technical data..
- In the box..
- Reviews..
- Manufacturer infos..
- Safety informations..
A good base for self-built solar filters:
With the Baader Astro Solar film, you can watch and capture the sun with full contrast. It offers also better protection against UV rays than simple glass filters.
With the attached manual, everyone can build his/her own filter for the astronomical telescope within minutes.
The Baader Astro Solar Foil has been awarded as the astro product of the decade in the USA.
The following characteristics have made this possible: Optimal protection: The foil is covered on both sides with a filter layer, not only on one side. Every layer can contain micro-holes that bypass UV rays. With a layer on both sides, this is not possible any more. Exceptional optical quality: The Astro Solar foil as an optical performance that is superior to e.g. Mylar foils. This is proven by an independent test. Compared with glass filters, the Baader foil is superior, too - in every section, it has a diffraction-limited performance. What is more, the foils is colour neutral. It does not give a green or yellow colour. Very tough: A glass filter may break and a foil may rip. But the Baader Astro Solar Foil is, because of its special molecular structure, extremely tear-rigid.
The colour of the sun through the foil
The sun is depicted in a neutral cool white tone. It is a tale that the sun would appear in blue. The neutral tone allows views full of contrast and is described by many observers as "very pleasant". Especially at higher magnifications, this allows successful observations.
Some astronomers prefer a warm orange or yellow colur. This colour does not represent the reality and is - from our point of view - not optimal for maximum contrast and finest details, but in combination with this neutral-colour foil, one can experiment with differnt colour filters and can choose the best. Thus you are not fixed to one colour.
An example for photographic use:
This Group was captured with the Baader Foil (photographical version) and a Baader Solar Continuum filter. Instrument: TS 127/1200mm achromatic refractor.
Such high-resolution pictures are only possible with a good objective and a good solar filter. There are many pictures like this that have been made with the Baader Astro Solar foil.
Transmission: | approx. 1/100,000 |
Substrate: | special film, developed for scientific use |
Coating: | aluminium |
Optical quality: | diffraction limited |
Safety: | proven by the PTB, Braunschweig, Germany |
Size: | 140 mm x 155 mm sheet |
1 sheet 140x155mm AstroSolar, visual type Plastic foil package + protective bag, with manual
Images from a comparative test
Interferometrical Test
ReferenceIdeal picture - Strehl 1.01
(only theoretical)
Baader AstroSolarclose to the optimum -
like a good objective
Mylar Solar foilirregularities are obvious. This would be
neither a good filter nor a good objective
Star test
ReferenceAiry disc - 99.9% Strehl
(only theoretical)
Baader AstroSolar94,1% inside the Airy disc
Comparable with a very good objective
simple mylar solar filter57,2% inside the Airy disc
not diffraction limited any more
Manufacturer / Importeur: | Baader Planetarium GmbH |
Street: | Zur Sternwarte |
ZIP / City: | 82291 Mammendorf |
Country: | Germany |
Telefon number: | +49 8145 80890 |
Email: | kontakt@baader-planetarium.de |
Website: | www.baader-planetarium.com |
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Reviews
Written by Klaus-Peter Janovics
on 2025-02-11
"Die Folie verwende ich an Refraktoren und Reflektoren. Es ist die sicherste Beobachtungsmöglichkeit bei bester natürlicher Abbildung."
Written by Johann Seidl
on 2024-09-25
Written by Manfred Schwarz
on 2023-06-14
"Seit Jahrzehnten ist die Baader Folie ein kostengünstiges und sicheres Produkt zum Beobachten der Sonne. Allerdings ist natürlich beim Verbau der Folie als auch bei der Anwendung Vorsicht geboten, um eine Verletzung der Folie zu vermeiden. Also immer vor der Anwendung kontrollieren, um die Augen zu schützen."
Written by Hans-Jürgen Becker
on 2022-05-03
Written by Klemens Homann
on 2021-04-27
"Sicherer Sonnenfilter mit guter Anleitung zum Bau der aufsteckbaren Kappe."
Written by Thomas Zierdt
on 2020-06-30
"Diese Sonnenfilterfolie verwende ich am Skywatcher Mak 90/1250 (auch hier bestellt), er tut, was er soll und das in guter Qualität, das Material lässt sich gut verwenden und ist reißfest, sofern man nicht mit einer Nadel hineinsticht."
Written by Jörg Schuhmann
on 2020-05-19
"Verwende es als Graufilter für ein Teleobjektiv. Sehr gute Qualität"