Vespera Dual Band Filter
The Vespera Dual Band Filter is a dual narrowband interference filter that will significantly improve your photo quality whether you are viewing from an urban or natural environment.
By selecting very precisely the wavelengths of Hydrogen Alpha (H-alpha) and Oxygen III (O-III), found mainly in nebulae, the filter will increase the contrast between the Stellar object and the sky background. Thus, its use makes it possible to obtain a higher-quality image, with sharper stars and finer details.
Keep only the essential
The Dual Band filter has been designed to allow only two particular wavelengths to pass through to the Vespera sensor:
- O-III
- H-alpha
Due to the filtered wavelengths, it is particularly effective for photographing nebulae in emission (e.g.: Orion nebula M42, Heart nebula IC 1805 …), dark nebulae endowed with hydrogen (e.g.: Horsehead or Elephant's Trunk nebula...), planetary nebulae (e.g.: Owl nebula M97, Dumbbell nebula M27...), supernova remnants (e.g.: Veil nebula, Crab Nebula M1...).
For globular clusters (e.g.: Hercules cluster M13, cluster M92...), the selectivity of the Dual Band filter will help you to obtain sharper stars.
A filter specifically studied for Vespera
The optical quality of the Dual Band filter has been specifically studied by our engineers to offer use at full aperture, without any impact on the optical diameter of the instrument. The lens ring is equipped with an electronic micro-card that allows Vespera to detect the Dual Band filter and adapt its observation and image processing parameters.
Transmission curve
The filter features 12nm of bandwidth in each wavelength (O-III = 500.7nm, H-alpha = 656.3nm).
The Vaonis store is…
30-day free trial
2-year warranty
Express worldwide shipping
Interest-free installment payments
Customer Reviews
It snaps on the Vespera Pro perfectly. Seems to bring out the details sooner. Less exposures needed.
Great results for some types of objects!
It can make initialization a bit more difficult in heavy light pollution areas especially if you add a full moon on top. Just place the filter carefully after the initialization.
Very satisfied.
Enhanced images significantly.
Reviews in Other Languages
Trés bon filtre. Indispensable pour les nébuleuses planétaires. Félicitations à Vaonis pour l’aspect très pratique, pour le placer et le retirer du Vespera. 🤓👍🍀
Ce filtre dual band pour Vespera 2 transforme littéralement l’observation des nébuleuses : les détails ressortent avec une netteté incroyable et les contrastes sont bien plus marqués, même sous un ciel moyennement pollué. La sensibilité accrue permet de révéler des structures subtiles et des nuances de couleurs qui passaient inaperçues auparavant. La qualité de fabrication est au rendez-vous, ce qui rassure sur la durabilité de l’investissement. Seul bémol, son prix élevé peut sembler prohibitif pour certains, mais le gain en qualité d’observation est indéniable. Un must-have pour les passionnés d’astrophotographie exigeants !
les trois derniers jours ont été propices aux observations (ouf, enfin!) j'ai pu notamment comparer avec des observations de M42 faites en octobre sans filtre et, cette fois ci, avec filtre DB . Je trouve le résultat meilleur couleur, détail, d'autant que je me trouve dans un environnement pollué par des lumières. Bref ce filtre fait bien son job.
In a nutshell
- Ideal for nebula photography
- Increases the contrast between the sky background and the stellar object
- Refines stars and details
Technical specifications
399 €
