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2" Baader f/2 High Speed 6.5nm Filter Array – Optimized CMOS (H-alpha / O-III / S-II)

Baader CMOS H-alpha / O-III / S-II f/2 2" x 2mm High Speed Filter Set - Precision Grade - with 2" (M48) Screw Thread

6.5nm bandwidth, recommended for extremely fast optical systems of f/3.4 and faster

Specially designed for special filter requirements when used with extremely high aperture f/2 optics such as Celestron's RASA astrographs.

Plano-optically polished, hard-coated Reflex-Blocker™ with sealed coating edges (Life-Coat™)

Blackened edges all around, with front filter indicator in the form of a black outer rim on the side of the telescope

Optimized for modern CMOS cameras, equally suitable for CCD camera technologies

Encased in a Baader Low Profile Filter Cell (LPFC): 6mm high

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€577.69
Reservation On request, out of stock.
Reference:
VK-2961663
Description

The new generation of Baader filters optimized for CMOS is characterized by:


Baader filters optimized for CMOS

higher contrast

full widths even narrower at half maximum (FWHM)

Reflex-Blocker™ coatings for the highest possible insensitivity to retroreflection from the nearest auxiliary optics, even in the harshest conditions

Carefully designed FWHM for each filter category to allow 1:1:1 exposures tuned to typical CMOS quantum efficiency and signal-to-noise ratio

Filter thickness identical to existing standards, with the greatest care regarding homofocality

Blackened edges all around, with front filter indicator in the form of a black outer edge at the front to further prevent any reflection of light falling on the edge of the filter.

Each filter is individually polished and optically fine coated, with a sealed coating edge (NOT cut from a larger plate, with the result that the coating edges are exposed, see more on this here)

Life-Coat™ – even harder coatings to allow an aging resistant coating for unlimited life, even in the harshest environments

Especificaciones:


MANUFACTURERBaader Planetarium
SKU (#)2961663
EAN CODE4047825103994
NET WEIGHT (KG)0.20
SUITABLE FOR F/RATIOf/3.4 and faster
TRANSMISSION RANGEH-alpha / O-III / S-II
FILTER THICKNESS (WITHOUT CELL)2 mm
HBW (HALFBANDWIDTH)6.5 nm
CWL (CENTRAL WAVELENGTH)656,3 nm / 500,7 nm / 671,7 nm
AR-COATINGReflex-Blocker™ hard coated, planeoptically polished
SPECIAL FEATURESCMOS-optimized with Life-Coat™
FILTER SIZE2 inch
FILTER USAGECMOS, CCD, H-alpha, O-III, S-II
FILTER MOUNTEDMounted (LPFC 6mm)
TYPE OF FILTERf/2 Highspeed
SINGLE OR SET?Filter-Set
FILTER SHAPEround
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Product Details
VK-2961663
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