Manufacturer: Baader
Product number: 2023-1311-21

EUR 225,00


incl. 19 % VAT (DE)  
The VAT indicated refers to that applicable in Germany. After logging in, the VAT amount is adjusted to the applicable VAT of the stored delivery country. Therefore, the final price may vary accordingly.
excl. 6.95 € shipping costs (DE)  
Please log in to calculate shipping costs to your country.
more details to the shipping costs ...

  • On stock
  • Only 1 pcs left in stock





rating: 5.0 of 5
  • Details..
  • Technical data..
  • In the box..
  • Reviews..
Baader H-alpha CCD Narrowband Filter 7 nm
Narrowband H-alpha filters are very often used for astrophotography. They provide very good contrast when photographing diffuse nebulae which emit H-alpha light, like the North America Nebula. The Baader H-alpha filter blocks the entire visible light, except a small passage in the red H-alpha light. This offers some advantages:
The entire stray light of cities is hidden, so beautiful photographs are possible even close to a city.
Star images from refractor telescopes are significantly improved, the stars become sharper.
Combined with Baader O-III and S-II CCD narrowband filters, exciting false color images are possible.



Baader narrowband filters - application areas:

These filters have revolutionised astrophotography. It is possible to record very dim nebulae even for small telescopes. In this case only light of the nebula is transmitted and unwanted light is blocked. The gain in contrast is enormous.

Colour fringes from the telescope (chromatic aberration) are also reduced significantly or even eliminated completely. The stars are much smaller and seem almost like punched.

These properties are achieved by a complex filter design. Baader filters are manufactured according to professional standards and provide adequate performance.
Maximal contrast through steep edges.
Dual cavity design for focal ratio f/3 to f/10
Best sharpness through plane-parallel surfaces.
Resistant to aging through optimal sealing also at the edge.




Filter type:Narrowband nebula filter
Transmission range:H-alpha around 656.3 nm
FWHM:7 nm
Filter thickness:2 mm
Size:2" filter thread
Low profile filter cell:height only 6 mm
Coating:Dielectrically coated - plane-optically polished
Baader 7 nm H-alpha filter
High-quality system box - stackable

"My experiences with the 7nm Baader filter have been fantastic. The filter is of very high quality, as are all the Baader filters and accessories. The ST-8 came with the 3nm CS filter which I used for a few months with good results. I started using the 7nm Baader after a friend of mine recommended I give it a try. He has been using one with his ST-10. The coatings appear to be quite good. I´ve experienced minimal reflections on brighter stars. The price is also very reasonable."

Chris Cook


Fotografische Anwendung von Baader - Schmalband Filtern:

Bildautor: Johannes Schedler, © 2008 by Panther Observatory.

NGC7000+Pelican Mosaic with Baader NarrowbandCCD-filters. Note tight stars and absence of halos.




Reviews

Written by ioan popa
on 2021-03-17

"Incredible price and quality"

Written by Andreas Kühne
on 2020-01-08

"Gute Ergebnisse auch an einer DSLR erreichbar (1200s). Nichts für Anfänger in der digitalen Bildverarbeitung. Produktqualität sehr gut."

Written by Ralf Stranzenbach
on 2018-06-20

"Funktioniert. Mehr kann ich noch nicht sagen, denn das Wetter war mir in den letzten Tagen nicht zugeneigt."

Written by Gerburg Unger
on 2017-10-11

"Der Filter ermöglicht eine kontrastreiche Auflösung von H-Alpha Gebieten bei der Astrofotografie unter Einfluss der zunehmenden Stadthelligkeit."

Written by Harald Welsch
on 2017-04-24

"sehr schöne Kontraste bei Nebeln"