Filtro H-Alpha 3nm Antlia Pro da 31.8mm

Codice articolo: ANT-1.25-HA

Filtro H-Alpha 3nm Antlia Pro da 31.8mm

Filtro Antlia H-alpha a banda strettissima ,solo 3nm! Ideale per registrare le deboli strutture di nebulose ad emissione anche sotto cieli inquinati.

Utilizzabile su sensori CCD e CMOS in bianco e nero

Disponibile in varie misure fino al formato 65x65mm

Technical Specifications:

Basic Substrate: Schott optical substrate
Measured thickness： 2mm+/-0.05mm for 1.25'', 2'' mounted, Dia31mm and Dia36mm unmounted
Measured thickness： 3mm+/-0.05mm for Dia50mm unmounted
FWHM (Full width at half maximum): 3nm
CWL (Central Wavelength): 656.3nmnm
Peak Transmission: ＞90% transmission at H-alpha line 656.3nmnm
Blocking: > 5 OD(0.001% out of band blocking) @ 300-1000nm
Surface Quality: S/D (scratch/dig)= 60/40 (Refer to MIL-O-13830)
Transmitted Wavefront: Lambda/4 or better.  Parallelism: less than 30 arcsec
Single / Non-glued substrate