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Solar Observation > Solar Filters > Filter films without mount > Baader > AstroSolar > Baader Sun filter foil A4 210x297mm
( 5 / 5 )
Product no.: 2718

Sun filter foil A4 210x297mm

$ 30.90 incl. VAT, plus shipping costs
on stock
ready for shipping in 24 h + lead time
Express shipment possible for delivery tomorrow, 08.12.2022!

Delivery possible before Christmas (European destinations) - when you order by 18.12.!
Right of return up to January 31 2023!


Product description

More about the series AstroSolar...

Please note: This product is currently not available in the US.

It's always very pleasant to observe the Sun, not only during solar eclipses. The number of sunspots changes permanently, as well as their shape and size. Depending on magnification, you may even be able to discern the core and boundary areas of a sunspot (umbra and penumbra). The one essential condition for any solar observation is to reduce the sunlight to under 1/100.000 of its normal brightness, which is a no risk amount for the eyes. The Astro-Solar sun filter foil meets that standard. Simply fitted to the front of the telescope tube, this foil doesn't fall short of pricey plane-parallel glass filters in any way. The coating is subjected to permanent quality control. The multiple metal coating of the foil produces a remarkably even filter effect.

Technical data:

  • film size: DIN A4 (210 x 297 mm)
  • filter efficiency: 99.999 % (ND = 5.0)
  • film thickness: 0.012 mm
  • absolutely clear and bubble-free substrate (non-Mylar)
  • instrument requirements: for telescopes, binoculars, spotting scopes and eyeepieces of up to 152mm aperture
  • quality mark: CE
  • Included in delivery: 1 A4 size sheet, incl. instructions, in PE sleeve

Our expert comment:

AstroSolar solar filter foil can be used to make your own filter attachment. The producers of the foil also make ready-made filters for different sizes of aperture and for different instruments:

(Stefan Taube)

Specifications

General


Series
AstroSolar
Length (cm)
29,7
Width (cm)
21
Type
Solar Filters
Type of build
white light

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*All prices include VAT plus shipping costs.

Baader Sun filter foil A4 210x297mm

Customer reviews

A neccessary accessory

Review by R. K. on 09.03.2014 14:46:40

( 5 / 5 )

This foil truly does what it promises. It provides a clear view of the Sun, in which the Sun is white/yellowish and the sky adjacent to it is black.
Already on my first observation at 20x magnification I could see a spot. Bringing it up to 50x revealed the spot consisting of two smaller spots. When your eye accommodates to observing, finer aggregations of spots can be seen.
I recommend this foil to anyone because it gives your scope more functionality.

P.S. The foil actually does not look as bad as it seems on the picture above. It is really a silvery clean sheet.

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