More products from the brand :Antlia

Antlia 4.5nm Edge OIII filter

Price range: CHF 199 through CHF 359

Free delivery against signature
Easy, free returns

Antlia OIII 4.5nm EDGE filter

Explore OIII nebulae with unrivalled contrast thanks to the Antlia OIII 4.5nm EDGE filter. Specially designed for deep-sky astrophotography, it maximizes the useful signal while suppressing unwanted noise.

Why choose the Antlia OIII 4.5nm EDGE filter?

  • High transmission (>85% at 500.7nm) to capture the faintest structures of OIII nebulae.
  • Narrow bandwidth of 4.5nm for exceptional contrast between subject and sky background.
  • OD5 deletion unwanted wavelengths to minimize light interference.
  • Fast compatibility up to f/3 without significant signal loss.
  • Premium manufacturing with one-piece optical substrate, scratch-resistant surface treatment and blackened edges.

Ideal applications

  • Imaging OIII nebulae
  • Observation of planetary nebulae and Wolf-Rayet
  • Capturing supernova remnants
  • Imaging polluted skies or dark sites
  • Extended imaging time even under moonlight

Filter technical specifications

Features Detail
Type OIII 4.5nm EDGE
FWHM (Full Width at Half Maximum) 4.5nm
Center wavelength (CWL) 500.7nm
Maximum transmission >85%
Out-of-band blocking OD5 (0.001%) between 300-1000nm
Filter thickness 2mm ± 0.05mm (50mm: 3mm ± 0.05mm)
Substrate Unglued monoblock optical glass
Surface quality S/D 60/40 (MIL-O-13830 standard)
Transmitted wavefront λ/4 or better
Parallelism <30 arcsec
Warranty 3 years against delamination

Available sizes

  • Mounted: 1.25″, 2″
  • Unmounted: Ø31mm, Ø36mm, Ø50mm

Frame features

  • Ultra-thin cell for reduced vignetting
  • Black anodized finish for durability
  • Weather-resistant laser engraving

Spectral curves

Important notice

Never look directly at the sun with this filter. This would cause serious eye damage.

 

Products in the same category

Filtre OIII Antlia 4.5nm Edge
Antlia 4.5nm Edge OIII filter
Price range: CHF 199 through CHF 359
Filtre Chroma OIII 3nm ( 2.8 < f/d < 3.6) - 2" Monté
Chroma OIII filter 3nm ( 2.8 < f/d < 3.6) - 2" Mounted
CHF 1'299
Filtre photométrique Chroma Sloan z' - 2" Monté
Chroma Sloan z' photometric filter - 2" Mounted
CHF 699
Filtre Antlia Triband RGB Ultra II
Antlia Triband RGB Ultra II filter
CHF 179
Filtre OIII 7nm Prime - 36mm (non-monté)
OIII filter 7nm Prime - 36mm (unmounted)
CHF 169
Filtre L (UV/IR Cut) Pegasus - 2" Monté
Filter L (UV/IR Cut) Pegasus - 2" Mounted
CHF 79
Diviseur optique ToupTek OAG-X (M48 ou M54)
ToupTek OAG-X optical splitter (M48 or M54)
CHF 140
Filtre photométrique Chroma Sloan r' - 2" Monté
Photometric filter Chroma Sloan r' - 2" Mounted
CHF 699
Filtre Antlia LRGB Dark Series
Antlia LRGB Dark Series filter
Price range: CHF 459 through CHF 769
Roue à filtre L ToupTek 7x2"
ToupTek 7x2" L filter wheel
CHF 219
Filtre Chroma Rouge - 2" Monté
Chroma Red filter - 2" mounted
CHF 499
Filtre Chroma H-beta 5nm - 2" Monté
Chroma H-beta 5nm filter - 2" mounted
CHF 989
Colour Magic 2" SII 3nm
Colour Magic 2" SII 3nm
CHF 399
Filtre Dual Band pour Vespera
Dual Band filter for Vespera
CHF 379
Filtre MSM Easy Focus - Star Focus - idéal pour la photographie d'étoiles
MSM Easy Focus filter - Star Focus - ideal for star photography
CHF 59
Filtre Antlia LRGBR+ Dark Series
Antlia LRGBR+ Dark Series filter
Price range: CHF 499 through CHF 689

Our new products

Askar 60F 0.75× Reducer
Askar 60F 0.75× Reducer
CHF 139
Askar 91F 0.75× Reducer
Askar 91F 0.75× Reducer
CHF 139
Askar 111F 0.74× Reducer
Askar 111F 0.74× Reducer
CHF 229
Askar 131F 0.74× Réducteur Correcteur
Askar 131F 0.74× Reducer Corrector
CHF 229
Askar 131F Flat-Field
Askar 131F Flat-Field
CHF 1'619
Askar 60F Flat-Field
Askar 60F Flat-Field
CHF 429
Kit Go-To SynScan™ Sky-Watcher pour Monture EQ3-2
Go-To SynScan™ Sky-Watcher kit for EQ3-2 mount
CHF 449
Réducteur / Correcteur 0.77x pour Esprit-150ED
0.77x Reducer / Corrector for Esprit-150ED
CHF 419
[category_menu_mobile]