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Astro Imaging Filters

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Alpine Astronomical Baader UBVRI Bessel I Filter (31mm Round, Unmounted)

Alpine Astronomical Baader UBVRI Bessel I Filter (31mm Round, Unmounted)

BH # ALFBESRD31I MFR # FBES-RD31I
Key Features
  • Photometric Filter: I Bandpass
  • Suitable from f/15 to f/1.8
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$22900
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping
Alpine Astronomical Baader 6.5nm f/2.0 O-III Highspeed CMOS Filter (36mm Round, Unmounted)

Alpine Astronomical Baader 6.5nm f/2.0 O-III Highspeed CMOS Filter (36mm Round, Unmounted)

BH # ALFCOIHSRD36 MFR # FCOIIIHS-RD36
Key Features
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$22900
Special Order
Expected availability: 7-14 Business Days
No Store Display
Free Standard Shipping

Vaonis Light Pollution Filter for Vespera Exploration Station

BH # VAAC023 MFR # AC023
3 Reviews
Key Features
  • Blocks Light Pollution Wavelengths
  • Allows Stargazing in Cities & Suburbs
See All Details
$22900
In Stock
No Store Display
Free 2-Day Shipping
Used for $182.95

Alpine Astronomical Baader 6.5nm f/2.0 S-II Highspeed CMOS Filter (36mm Round, Unmounted)

BH # ALFCSIIHSR36 MFR # FCSIIHS-RD36
Key Features
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$23200
Special Order
Expected availability: 7-14 Business Days
No Store Display
Free Standard Shipping

Alpine Astronomical Baader 6.5nm f/2.0 H-Alpha Highspeed CMOS Filter (36mm Round, Unmounted)

BH # ALFCHALHSR36 MFR # FCHALHS-RD36
Key Features
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$23200
Special Order
Expected availability: 7-14 Business Days
No Store Display
Free Standard Shipping

Alpine Astronomical Baader CMOS-Optimized UV/IR Bandpass L Filter (50 x 50mm Square, Unmounted)

BH # ALFCUVIRSQ50 MFR # FCUVIR-SQ50
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
Available in other Styles, Configurations & Kits
$23500
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader CMOS-Optimized RGB-R Bandpass Filter (50 x 50mm Square, Unmounted)

BH # ALFCRSQ50 MFR # FCR-SQ50
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
Available in other Styles, Configurations & Kits
$23800
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader CMOS-Optimized RGB-G Bandpass Filter (50 x 50mm Square, Unmounted)

BH # ALFCGSQ50 MFR # FCG-SQ50
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
Available in other Styles, Configurations & Kits
$23800
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader CMOS-Optimized RGB-B Bandpass Filter (50 x 50mm Square, Unmounted)

BH # ALFCBSQ50 MFR # FCB-SQ50
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
Available in other Styles, Configurations & Kits
$23800
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Explore Scientific Optolong L-eXtreme Deep-Sky Light Pollution Filter (1.25")

BH # EX310175 MFR # 310175
See All Details
$23900
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader H-beta Narrowband Filter (1.25" Eyepiece Filter)

BH # ALFCHBN1 MFR # FCHBN-1
Key Features
  • 5.5nm FWHM, Ideal from f/10 to f/3.5
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$24400
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader UBVRI Bessel U Filter (36mm Round, Unmounted)

BH # ALFBESRD36U MFR # FBES-RD36U
Key Features
  • Photometric Filter: U Bandpass
  • Suitable from f/15 to f/1.8
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$24400
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader UBVRI Bessel I Filter (36mm Round, Unmounted)

BH # ALFBESRD36I MFR # FBES-RD36I
1 Review
Key Features
  • Photometric Filter: I Bandpass
  • Suitable from f/15 to f/1.8
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$24400
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader SLOAN/SDSS z-s' Filter (36mm Round, Unmounted)

BH # ALFSLNRD36Z MFR # FSLN-RD36Z
Key Features
  • SLOAN-z-s' Bandpass Filter
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$24600
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader SLOAN/SDSS y' Filter (36mm Round, Unmounted)

BH # ALFSLNRD36Y MFR # FSLN-RD36Y
Key Features
  • SLOAN-y' Bandpass Filter
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$24600
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

ZWO 2" SII Filter 7nm

BH # ZWOSII7NM2 MFR # ZWO-SII7NM2
See All Details
$24900
Special Order
Expected availability: 4-6 Weeks
No Store Display
Free Standard Shipping

ZWO 2" HA Filter 7Nm

BH # ZWOHA7NM2 MFR # ZWO-HA7NM2
See All Details
$24900
Special Order
Expected availability: 4-6 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader SLOAN/SDSS r' Filter (36mm Round, Unmounted)

BH # ALFSLNRD36R MFR # FSLN-RD36R
Key Features
  • SLOAN-r' Bandpass Filter
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$25700
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader SLOAN/SDSS i' Filter (36mm Round, Unmounted)

BH # ALFSLNRD36I MFR # FSLN-RD36I
Key Features
  • SLOAN-i' Bandpass Filter
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$25700
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader SLOAN/SDSS g' Filter (36mm Round, Unmounted)

BH # ALFSLNRD36G MFR # FSLN-RD36G
Key Features
  • SLOAN-g' Bandpass Filter
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$25700
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader H-beta Narrowband Filter (31mm Round, Unmounted)

BH # ALFCHBNRD31 MFR # FCHBN-RD31
Key Features
  • 5.5nm FWHM, Ideal from f/10 to f/3.5
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$25700
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader UBVRI Bessel V Filter (2" Eyepiece Filter)

BH # ALFBES2V MFR # FBES-2V
1 Review
Key Features
  • Photometric Filter: V Bandpass
  • Suitable from f/15 to f/1.8
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$25800
In Stock
No Store Display
Free 2-Day Shipping

Alpine Astronomical Baader UBVRI Bessel R Filter (2" Eyepiece Filter)

BH # ALFBES2R MFR # FBES-2R
Key Features
  • Photometric Filter: R Bandpass
  • Suitable from f/15 to f/1.8
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$25800
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Alpine Astronomical Baader UBVRI Bessel B Filter (2" Eyepiece Filter)

BH # ALFBES2B MFR # FBES-2B
Key Features
  • Photometric Filter: B Bandpass
  • Suitable from f/15 to f/1.8
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$25800
In Stock
No Store Display
Free 2-Day Shipping

Alpine Astronomical Baader SLOAN/SDSS u' Filter (36mm Round, Unmounted)

BH # ALFSLNRD36U MFR # FSLN-RD36U
Key Features
  • SLOAN-u' Bandpass Filter
  • Optimized for CMOS, Suitable for CCD
  • Reflex-Blocker Hard Coated
  • Life-Coat Sealed Coating Edges
See All Details
Available in other Styles, Configurations & Kits
$26400
Special Order
Expected availability: 3-5 Weeks
No Store Display
Free Standard Shipping

Pegasus Astro 2" Mounted Photographic S2 7nm Filter

BH # PEFLTR2MS2 MFR # PEG-FLTR-2M-S2
See All Details
$26445
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping

Pegasus Astro 2" Mounted Photographic O3 7nm Filter

BH # PEFLTR2MO3 MFR # PEG-FLTR-2M-O3
See All Details
$26445
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping

Pegasus Astro 2" Mounted Photographic 7nm Ha Filter

BH # PEFLTR2MHA MFR # PEG-FLTR-2M-HA
See All Details
$26445
Special Order
Expected availability: 2-4 Weeks
No Store Display
Free Standard Shipping
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