ALTAIR F200S265CCD 2" 6.5 nm SII...
ALTAIR F200S265CCD 2" 6.5 nm SII...
ALTAIR F200S265CCD 2" 6.5 nm SII narrowband filter
ALTAIR F200S265CCD 2" 6.5 nm SII narrowband filter

ALTAIR F200S265CCD 2" 6.5 nm SII narrowband filter

ALTF200S265CCD
Stock at Supplier
183.43
VAT excluded Shipping 5/7d

The Altair Astro Premium SII 6.5nm filter is designed for astro imaging of nebulae with Mono CCD or CMOS cameras, blocking light pollution by cutting light pollution wavelengths. The filter blocks UV IR and has an AR anti-reflection coating.

Buy it now and receive it between on Monday, 23 December and Monday, 30 December with Home delivery - International

Delivery Options
Carrier Description Estimated Delivery
Home delivery - International Home delivery - International

Monday, 23 December - Monday, 30 December

Home delivery - International

Home delivery - International

Estimated delivery:
Monday, 23 December - Monday, 30 December

 

The Altair Astro Premium SII 6.5nm filter is designed for astro imaging of nebulae with Mono CCD or CMOS cameras, blocking light pollution by cutting light pollution wavelengths. The filter blocks UV IR and has an AR anti-reflection coating.

Purchasing the complete SHO set provides significant cost savings versus purchasing the filters separately.

A 6.5nm to 7nm FHWM provides higher contrast compared to 12nm FHWM filters, e.g. for better performance in heavily light-polluted urban areas, and higher contrast for imaging faint objects. Emission lines from artificial illumination (mercury (Hg) and sodium (Na)), as well as sky glow, are completely suppressed, allowing long exposures in urban conditions. LED illumination outside the Oiii bandpass is also blocked.

Steep transmission curves with narrow pass bands provide high image contrast. Advanced UV/IR blocking coatings allow small size stars to be obtained even with refractor optics.

Technical specifications:

  • AR (anti-reflection) coatings suppress halo effects and internal reflections for more pleasing star images.
  • Ultra-thin BK7 glass housed in a precision CNC-machined filter cell for stress-free, tilt-free mounting.
  • Filters are 1.85 mm thick, 1/4-wave flatness and 30 arc-second parallelism.
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