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Alpine Astronomical Baader Clear Focusing Filter (36mm Round, Unmounted)

Alpine Astronomical Baader Clear Focusing Filter (36mm Round, Unmounted)

BH # ALFCRD36 MFR # FC-RD36
Key Features
  • Full Wavelength Throughput
  • Allows for Sharp Focus Before Imaging
  • Unmounted for Versatile Use
  • Anti-Reflection Fully Coated
$7200
In Stock
No Store Display
Free 2-Day Shipping
Alpine Astronomical Baader Clear Focusing Filter (31mm Round, Unmounted)

Alpine Astronomical Baader Clear Focusing Filter (31mm Round, Unmounted)

BH # ALFCRD31 MFR # FC-RD31
Key Features
  • Full Wavelength Throughput
  • Allows for Sharp Focus Before Imaging
  • Unmounted for Versatile Use
  • Anti-Reflection Fully Coated
$7200
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping
$7700
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping
$9030
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping
$9030
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping
$9030
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping
$9030
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader CMOS-Optimized UV/IR Bandpass L Filter (31mm Round, Unmounted)

BH # ALFCUVIRRD31 MFR # FCUVIR-RD31
Key Features
  • UV/IR Cut: 420-685nm
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
$9100
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader C2 Swan-Band CMOS Filter (15nm) - OIII Parallel (1.25" Eyepiece)

BH # ALFSWAN1 MFR # FSWAN-1
Key Features
  • For Comet Gas Tail Observation
  • Passes C2 511 & 514nm Emission Lines
  • Blocks O III Line for Higher Contrast
  • Optimized for CMOS, Suitable for CCD
$9300
In Stock
No Store Display
Free 2-Day Shipping

ZWO 1.25" CH4 Filter

BH # ZWOCH4 MFR # ZWO-CH4
$9900
Special Order
Expected availability: 4-6 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader Clear Focusing Filter (2" Eyepiece Filter)

BH # ALBFC2 MFR # FC-2
Key Features
  • Full Wavelength Throughput
  • Allows for Sharp Focus Before Imaging
  • 2" Eyepiece Filter Frame
  • Anti-Reflection Fully Coated
$10000
In Stock
No Store Display
Free 2-Day Shipping

Alpine Astronomical Baader Contrast Booster Filter (1.25" Eyepiece Filter)

BH # ALFCNBST1 MFR # FCNBST-1
Key Features
  • Eliminates Color Error of Refractors
  • Reduces Bluish Hue During Viewing
  • Over 95% Transmission
  • Phantom Coating
See All Details
$10400
In Stock
No Store Display
Free 2-Day Shipping

Alpine Astronomical Baader CMOS-Optimized UV/IR Bandpass L Filter (36mm Round, Unmounted)

BH # ALFCUVIRRD36 MFR # FCUVIR-RD36
Key Features
  • UV/IR Cut: 420-685nm
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
$10500
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader Astrophotography H-alpha Conversion Filter for Select Canon EOS/Rebel Cameras

BH # ALFBCF400D MFR # FBCF-400D
Key Features
  • Isolates Hydrogen-Alpha Wavelength
  • Converts DSLR to Dedicated Astro Camera
  • Replaces Factory Cover Glass
  • Maintains Correct Factory Focal Point
$10800
Special Order
No Store Display
Free Standard Shipping

Alpine Astronomical 9nm O-III Super-G CMOS Filter (1.25")

BH # ALFOIIISG1 MFR # FOIIISG-1
Key Features
  • 9nm FWHM, Max Transmission 97%
  • For Planetary Nebulae/Supernova Remnants
  • Serves as RGB Replacement Filter
  • CMOS-Optimized Coatings
$10800
In Stock
No Store Display
Free 2-Day Shipping

Alpine Astronomical Baader Astrophotography H-alpha Conversion Filter for Canon EOS Digital Rebel

BH # ALFACF1 MFR # FACF-1
Key Features
  • Isolates Hydrogen-Alpha Wavelength
  • Converts DSLR to Dedicated Astro Camera
  • Replaces Factory Cover Glass
  • Maintains Correct Factory Focal Point
$11100
In Stock
No Store Display
Free 2-Day Shipping

SVBONY SV240 Multi-Narrowband and Near-Infrared Filter (2")

BH # SVW9191A MFR # W9191A
Key Features
  • For Galaxies, Star Clusters & Nebulae
  • Passes Near-Infrared Region
  • 90% Transmittance of Ha, OIII, H-Beta
  • Blocks Light Pollution up to Bortle 8
$11399
In Stock
No Store Display
Shipping Charges Apply

Alpine Astronomical H-Alpha 20nm Bandpass Filter (1.25")

BH # ALFHALW1 MFR # FHALW-1
Key Features
  • Deep-Sky Astrophotography and Imaging
  • NOT Safe for Solar Viewing or Imaging
  • For High-Contrast Images of H-II Regions
  • Optimized for Color CMOS & CCD Cameras
$11500
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader Clear Focusing Filter (50.4mm Round, Unmounted)

BH # ALFCRD50 MFR # FC-RD50
Key Features
  • Full Wavelength Throughput
  • Allows for Sharp Focus Before Imaging
  • Unmounted for Versatile Use
  • Anti-Reflection Fully Coated
$11700
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader UHC-L Ultra-L-Booster Nebula Filter (1.25" Eyepiece)

BH # ALFUHCL1 MFR # FUHCL-1
Key Features
  • Blocks City Light Pollution
  • Increases Contrast of Nebulae & Comets
  • CMOS-Optimized
  • Ideal for Astrophotography & Observation
$11900
In Stock
No Store Display
Free 2-Day Shipping

Alpine Astronomical Baader CMOS-Optimized RGB-R Bandpass Filter (1.25" Eyepiece Filter)

BH # ALFCR1 MFR # FCR-1
Key Features
  • RGB R Bandpass: 595-690nm
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
$12300
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader CMOS-Optimized RGB-G Bandpass Filter (1.25" Eyepiece Filter)

BH # ALFCG1 MFR # FCG-1
Key Features
  • RGB G Bandpass: 490-580nm
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
$12300
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader CMOS-Optimized UV/IR Bandpass L Filter (47.4mm Round, Unmounted)

BH # ALFCUVIR2U MFR # FCUVIR-2U
Key Features
  • UV/IR Cut: 420-685nm
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
$12300
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader Clear Focusing Filter (50x50mm Square, Unmounted)

BH # ALFCSQ50 MFR # FC-SQ50
Key Features
  • Full Wavelength Throughput
  • Allows for Sharp Focus Before Imaging
  • Unmounted for Versatile Use
  • Anti-Reflection Fully Coated
$13600
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping

SVBONY SV220 H-Alpha/O-III 7nm Dual-Band Narrow Filter (2")

BH # SVW9172B MFR # W9172B
Key Features
  • Better Contrast for Nebulae Photography
  • Reduces Effects of Light Pollution
  • H-Alpha & O-III 7nm Bands
  • M48 x 0.75 Male Thread
$13623
Special Order
No Store Display
Free Standard Shipping

Alpine Astronomical Baader CMOS-Optimized RGB-R Bandpass Filter (31mm Round, Unmounted)

BH # ALFCRRD31 MFR # FCR-RD31
Key Features
  • RGB R Bandpass: 595-690nm
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
$13700
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader CMOS-Optimized RGB-G Bandpass Filter (31mm Round, Unmounted)

BH # ALFCGRD31 MFR # FCG-RD31
Key Features
  • RGB G Bandpass: 490-580nm
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
$13700
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader CMOS-Optimized RGB-B Bandpass Filter (31mm Round, Unmounted)

BH # ALFCBRD31 MFR # FCB-RD31
Key Features
  • RGB B Bandpass: 400-510nm
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
$13700
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping
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