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Observatoire astronomique amateur, astronomie, astronomique, astrophotographie, observations, ciel nocturne, photographie du ciel, nuit   

ASTRONOMIQUE

Le matériel

Le filtre H alpha

 Lumicon International
 
 

Night-Sky H-Alpha Filters

Lumicon Night-Sky Hydrogen Alpha Filter, for Black & White Deep-Sky Photography 

 

(Not for solar or visual work)

WARNING: DO NOT LOOK AT THE SUN THROUGH THE LUMICON Night-Sky H-ALPHA FILTER. Eye Damage could result from solar heat transmitted through this filter.  

Transmission for this sharp-cut-off deep-sky photography filter is zero below 630nm, 90% at Hydrogen-Alpha 657nm, and 90-98% from 657nm to the near infrared. Both filter surfaces have high-efficiency anti-reflection coatings for maximum performance.

For Deep-Sky Photography

The Lumicon Night-Sky H-Alpha Filter is a powerful aid in overcoming light pollution, and will help you achieve strikingly improved results in telephoto lens B&W astrophotography. It is ideally matched to hypersensitized 2415 film, and will reduce light pollution 10-fold, making it ideal for photography of faint emission nebulae.To obtain highest relative film speeds, we recommend using any of the Lumicon HYPER-KITS to hypersensitize 2415 or other film.

Recommended Films

Hypersensitized Kodak Technical Pan 2415 is the only recommended film for use with the Night-Sky H-Alpha Filter; do not use Tri-X or any other B&W film.

Filter Factor

Exposures may be increased 2-10 times with the Night-Sky H-Alpha Filter, depending on the faintness of the nebula.

The Night-Sky H-Alpha Filter is not suitable for visual use.

Contact Info

  tech-support@lumicon.com Lumicon Home Site   lumicon@lumicon.com