Reference: ZWEAF-N

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!
€215.00
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.
€413.10 €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.
€199.00
More
En Stock
All best sellers
  • Banner

Filtre Ha 6.5nm Serie - OPTOLONG
  • Filtre Ha 6.5nm Serie - OPTOLONG
  • Filtre Ha 6.5nm Serie - OPTOLONG

Filter Ha 7nm Serie - OPTOLONG

HA-1
Optolong
Rating 

Optolong H-ALPHA 7nm filter
The H-ALPHA 7nm filter is the most popular narrowband filter allowing a 7nm bandwidth centered on a 656nm wavelength.

Version
€168.00
Tax included
Quantity
Généralement 2 - 3 semaines

  security

100% Secure Payment

  Delivery policy

Express shipping of in-stock parts

  RETURN POLICY

Express shipping of in-stock parts

Description

⚠️ Please choose your filter version in the drop-down menu under the mini description



Optolong H-ALPHA 6.5nm filter

The 7nm H-ALPHA filter is the most popular narrowband filter that allows a 7nm bandwidth centered on a 656nm wavelength and reduces the transmission of certain wavelengths of light, especially those produced by artificial light, including mercury vapour, both low and high pressure sodium vapor lamps and unwanted natural light caused by the emission of neutral oxygen into our atmosphere (eg Skyglow).

The H-ALPHA astrophotography filter remains the best choice for the highest contrast and for revealing fine nebula detail.

Main use and performance

Suitable for viewing low emission nebulae in H-ALPHA lines under moonlight or heavy light pollution conditions.

Narrowband imaging can be obtained by combining the filters of the SHO set (H-ALPHA, OIII, SII), in lunar and light pollution conditions, in this way the equipment does not remain stationary for weeks .

The H-ALPHA filter is the first filter that is usually added to the LRGB KIT by most astrophotographers, in this way they mix the black and white image with the RGB data to obtain and improve the structural details while maintaining a natural look of the image. .

The H-ALPHA filter does not eliminate the effects of light pollution and does not increase the brightness of the photographed object, but rather increases the contrast between the nebula and the night sky, which facilitates image processing .

This H-ALPHA 7nm narrow band filter is designed for use in filter wheels, in filter holder drawers or directly on the camera (not valid for those not mounted in the cell)
Technical characteristics


Technical data

  •     Schott substrate material
  •     Thickness 2.0mm (1.25"/2"/36mm)
  •     Thickness 1.0 mm (Clip series)
  •     Surface quality: 60/40 (refer to MIL-O-13830)
  •     Fine optical polishing to ensure accurate 1/4 wavefront and <30 seconds parallelism on both surfaces
  •     80% transmittance to the h-alpha line Infrared wavelength of 656 nm, cut-off 700 to 1100 nm
  •     0.1% transmittance of out-of-band artificial light pollution, especially large emission lines (i.e. Na 589 nm, Hg 435 nm and 578 nm). A transmission of 0.1% is equivalent to OD3 (optical density), and a high optical density value indicates very low transmission and a low optical density indicates high transmission.
Product Details
HA-1

Data sheet

Type
Ha
Version Vissé
Reviews

No customer reviews for the moment.

Write your review

Filter Ha 7nm Serie - OPTOLONG

Filter Ha 7nm Serie - OPTOLONG

Optolong H-ALPHA 7nm filter
The H-ALPHA 7nm filter is the most popular narrowband filter allowing a 7nm bandwidth centered on a 656nm wavelength.

Write your review
16 other products in the same category:

Reference: ANHA4.5-125

Brand: ANTLIA

Filter Ha 4.5nm SERIE - ANTLIA

Review(s): 0
Antlia EDGE Very Narrow Band Light Pollution Filter Filter for deep sky imaging 90% minimum transmission on the H-Alpha line (656.3nm)
€228.00
More
Generaly in stock under | 3 to 10 days

Reference: SII-1

Brand: Optolong

Filter SII 6.5nm Serie - OPTOLONG

Review(s): 0
6.5nm Optolong SII Filter This filter is a 6.5 nm SII filter designed for observing nebulae with a wavelength centered at 672 nm and reduces the transmission of certain wavelengths of light.
€149.00
More
Généralement 2 - 3 semaines

Reference: 8H00PC

Brand: Astronomik

Filtres Astronomik Set RVB DEEP SKY

Review(s): 0
Astronomik fait dans les filtres, visuel ou photo, haut de gamme. Ce pack de filtres parafocaux est constitué de 4 filtres L -R-V-B interférentiels de haute qualité pour un rendu des couleurs parfait.
€289.00
More
Généralement 2 - 3 semaines

Reference: 8H0039

Brand: Astronomik

Filtres Astronomik Set L-RVB type 2c SERIE

Review(s): 0
Astronomik fait dans les filtres, visuel ou photo, haut de gamme. Ce pack de filtres parafocaux est constitué de 4 filtres L -R-V-B interférentiels de haute qualité pour un rendu des couleurs parfait.
€299.00
More
Généralement 2 - 3 semaines

Follow us on Facebook