Reference: ZWEAF-S

Brand: ZWO

Moteur de mise au point ZWO EAF V2

Review(s): 1

ZWO a l'art de proposer des équipements de qualité et pas cher. Si vous cherchez à faire votre mise au point en automatique ou par commande électrique, alors ce robofocus est fait pour vous!

Price €249.00
More
En Stock

Reference: POA-URANUS-C

Brand: Player One

Caméra Uranus-C (IMX585) Color - Player One

Review(s): 0

Uranus-C is (IMX585) camera developed by Player One Astronomy, which adopts the newest Sony IMX585 1/1.2” format color sensor. The 2.9um pixel size accommodates a well depth of 38.8Ke with a total of 8.3MP  (the resolution is 3856*2180), and the diagonal is 12.85mm.

Price €459.00
More
In Stock

Reference: ZWASI120MINI

Brand: ZWO

Caméra ZWO ASI120mini Monochrome

Review(s): 2

Une petite caméra idéale pour le guidage mais aussi pour l'imagerie planétaire. Cette version monochrome la rend plus sensible et détectera sans mal les étoiles même faibles.

Price €199.00
More
En Stock

Reference: ZWASIAIR-PLUS

Brand: ZWO

Hub Asiair plus - ZWO

Review(s): 1

Control box, version 3 of the Asiair, for mounts, cameras, APNS Piloting through your smartphone or tablet EMMC 32GB Ultra fast disc WiFi cover up to 20m Even more compact than Asiair Pro

Price €389.00
More
In Stock
All best sellers

Filter Ha 4.5nm SERIE - ANTLIA

ANHA4.5-125
Rating 

Antlia EDGE Very Narrow Band Light Pollution Filter

  • Filter for deep sky imaging
  • 90% minimum transmission on the H-Alpha line (656.3nm)
Version
€228.00
Tax included
Quantity
Generaly in Stock under | 3 - 10 days

100% secure payments
  SECURITE

Payements 100% Sécurisé

  EXPEDITION

Expédition Express des pièces en stock

  POLITIQUE DE RETOUR

Retour sous 14 j

Description

All about H-Alpha 4.5nm EDGE Antlia filters

The Antlia 4.5mm H-alpha (Ha) filter is suitable for imaging diffuse nebulae, planetary nebulae and Ha-rich supernova remnants. The 4.5nm wide bandwidth is centered on the H-alpha line at 656.3nm. The thinness of the bandwidth allows deep sky imaging even in very difficult light pollution conditions and greatly increases the contrast of objects under very dark skies. All the parasitic lines of light pollution are eliminated, in particular those of mercury vapor and sodium lamps.



Antlia EDGE narrowband filters are designed to bring out the faintest details of nebulae by removing unwanted wavelengths from the sky background. The narrower the bandwidth, the more effective the filter. The transmission of the filters reaches 94% at 656.3nm. The optical density outside the transmission zone is OD5 (0.001%), which offers an excellent signal-to-noise ratio and a clean cut of the other lines. The clear cut of the signal outside the transmission zone is an important parameter since it conditions the quality of the filtration. The greater the cut-off slope, the greater the contrast between the H-alpha signal and the background of the sky which has become perfectly black. Additionally, a sharp cutoff minimizes halos around bright stars.

During manufacturing, Antlia carries out extremely strict quality control. Each filter is tested and measured to verify that it meets the high performance requirements of the specification. The low tolerances require the use of perfectly homogeneous substrates and a uniform thickness; deviation from specification shall not exceed 0.05mm.


The wavelength in nanometers is on the abscissa. The percentage of transmission is on the ordinate. The half-height transmission width is 4.5nm and the filter is centered at 656.3nm

Applications andperformances

  • Very narrow bandwidth of 4.5nm, designed for astronomical imaging of diffuse nebulae, planetary nebulae and supernova remnants, regardless of sky quality
  • Possibility of association with SII and OIII Antlia 4.5nm filters to obtain SHO images in Hubble palette
  • Frank cut of the undesirable lines around H-alpha. Transmission is 94% at 656.3nm and increases the contrast of H-alpha emitting objects
  • Antlia EDGE narrowband filters are compatible with instruments at F/d >3 with slight signal loss
  • All Antlia filters have blackened edges to suppress stray reflections
  • This filter is not suitable for imaging objects that do not emit H-alpha signals, such as galaxies. However, adding an H-alpha layer to an LRGB image of a galaxy will bring out the nebulae it contains.
  • Glass type Schott optical glass
  • Surface quality: 60/40 (according to MIL-O-13830 standard)
  • Substrate thickness: 2mm
  • Transmission: 90% transmission on the H-Alpha line (656.3nm)
  • Treatments: filter polished on both sides with a precision of λ/4
  • Multi-layer and anti-reflection treatments on both sides
Product Details
ANHA4.5-125

Data sheet

Type
Version Vissé
Type
Ha
Reviews

No customer reviews for the moment.

Write your review

AsiAir compatible ZWO cable for 2 heating resistors RCA connectors

Filter Ha 4.5nm SERIE - ANTLIA

Antlia EDGE Very Narrow Band Light Pollution Filter

  • Filter for deep sky imaging
  • 90% minimum transmission on the H-Alpha line (656.3nm)
Write your review
16 autres produits dans la même catégorie :

Référence: SII-1

Marque: Optolong

Filtre SII 6.5nm Serie - OPTOLONG

Commentaire(s): 0

Filtre Optolong SII 6,5 nm Ce filtre est un filtre SII 6,5 nm conçu pour l'observation des nébuleuses avec une longueur d'onde centrée à 672 nm et réduit la transmission de certaines longueurs d'onde de lumière.

Prix 149,00 €
Détails
Généralement 1 - 3 semaines

Référence: OIII-1

Marque: Optolong

Filtre OIII 6.5nm Serie - OPTOLONG

Commentaire(s): 0

Filtre Optolong OIII 6,5 nm Ce filtre est un filtre OIII à bande étroite supplémentaire de 6,5 nm conçu pour l'observation des nébuleuses avec une longueur d'onde centrée à 500 nm et réduit la transmission de certaines longueurs d'onde de lumière.

Prix 149,00 €
Détails
Généralement 2 - 3 semaines

Référence: ANSII3-125

Marque: ANTLIA

Filtre SII 3nm SERIE PRO - ANTLIA

Commentaire(s): 0

Le filtre 3nm peut être utilisé dans des zones avec beaucoup de pollution lumineuse pour pouvoir obtenir une image très bien contrastée et parfaitement centrée centrée dans la longueur d'onde de 671,6nm.

Prix 339,00 €
Détails
Généralement En stock sous | 3 à 10 Jours

Référence: HA-1

Marque: Optolong

Filtre Ha 7nm Serie - OPTOLONG

Commentaire(s): 0

Filtre Optolong H-ALPHA 7nm Le filtre H-ALPHA 7nm est le filtre à bande étroite le plus populaire permettant une bande passante de 7 nm centrée sur une longueur d'onde de 656 nm.

Prix 168,00 €
Détails
Généralement 1 - 3 semaines

Follow us on Facebook