Manufacturer: ANTLIA
Product number: AHA31

EUR 375,00


incl. 19 % VAT (DE)  
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  • On stock
  • Only 3 pcs left in stock





rating: 4.5 of 5
  • Details..
  • Technical data..
  • In the box..
  • Manufacturer infos..
  • Safety informations..
Antlia narrowband filter with 3 nm bandwidth
Antlia nebula filters offer extreme contrast. Thus, the astrophotographer achieves a very good result even with considerable stray light from cities or from the moon. Antlia guarantees a transmission of at least 88% in the 1 nm range around the central passband. This makes the narrowband filters interesting also for fast telescopes and objectives. Even at an extreme focal ratio of f/3, there is only minimal transmission loss.

The quality features of Antlia narrowband filters at a glance:
High light transmission and narrowest bandwidth to maximize contrast
Steep spectral profile minimizes halos around bright stars
Single substrate to eliminate internal reflections
Use in light-polluted areas and dark locations
Extends exposure time in moonlight conditions
Antlia Narrowband Pro filters can be used with low signal loss down to f/3 systems
All Antlia narrowband filters are blackened at the edges to prevent internal reflections of stray light
Superior optical reliability reduces post-processing of the image

Substrate:Optical substrate from Schott
Filter thickness:2 mm
Cell:metal cell with 1.25" filter thread
FWHM:3 nm
CWL:656.3 nm
Peak transmission:min. 88%
Surface quality:S/D (scratch/dig)= 60/40 (Refer to MIL-O-13830)
Surface accuracy:Lambda/4 or better
Filter
Filter box

Manufacturer / Importeur:Teleskop-Service Ransburg GmbH
Street:Von-Myra-Str. 8
ZIP / City:85599 Parsdorf
Country:Germany
Telefon number:+49 89 99228750
Email:info@teleskop-service.de
Website:www.teleskop-service.de
Safety informations: PDF Download


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Reviews

Written by Robert Schuitema
on 2022-11-05

I bought this filter after doing some digging online and it seemed this filter had relatively good performances for its price.

Filter came in with some fingerprints and some dust on it, which I wasn´t very happy with. Fortunately, after some cleaning I saw there was no actual damage done to the filter that could possibly hurt imaging.

Tested it one a few nebulae ranging from 60-180 sec exposures on my refractor which included a number of bright stars and the little bit of halo´s I saw were very weak. Also no light leakage found yet.

Written by Tiago Ramos
on 2022-03-07

I bought this filter already thinking about buying the 533MM Pro. I tested it so far in B8/9 even with the 533MC Pro I was very satisfied with the result. Of course the Air Pro to make AP I used another filter. For me it is an excellent filter, I recommend it without a doubt.