Top Highlights

  • Hydrogen-Alpha Bandpass
  • 90° Star Diagonal
  • Fits 1.25" Drawtubes and Eyepieces
  • For Telescope Focal Lengths up to 1500mm
  • SolarMax Solar Viewing Filter Required

Availability: In Stock : Shipping Only

Ship Time: Order by 4PM to Ship the Same Day  

You Pay: $699.00

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  • Selectively Filters Ambient Light
  • Anti-Reflection Optical Coatings
  • High-Transmission Dielectric Coatings
  • Maintains a Neutral Color Balance
  • Schott B270 Glass

Availability: In Stock

Ship Time: Order by 4PM to Ship the Same Day  

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You Pay: $499.95

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Availability: In Stock

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You Pay: $38.48

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  • Blocks Infrared Light
  • Standard Camera Filter C-Threads
  • Fully Multicoated with Dichroic Coatings

Availability: In Stock

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You Pay: $32.99

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B&H # CELRGBFS MFR # 95517

  • Fits Standard 1.25" Filter Threads
  • For Astroimaging and Astronomy
  • 26mm Clear Aperture

Availability: In Stock

Ship Time: Order by 4PM to Ship the Same Day  

You Pay: $199.00

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Top Highlights

  • Hydrogen-Alpha Bandpass
  • 90° Star Diagonal
  • Fits 1.25" Drawtubes and Eyepieces
  • For Telescope Focal Lengths up to 500mm
  • SolarMax Solar Viewing Filter Required

Availability: Special Order

Ship Time: 7-14 business days 

Free Standard Shipping
Not eligible for Free Expedited Shipping

You Pay: $329.00

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Top Highlights

  • Use Conventional OTAs for Solar Viewing
  • For OTA Focal Lengths up to 1000mm
  • 40mm Primary Front Etalon Filter
  • RichView Tuning System
  • Hydrogen-Alpha Bandwidth
  • 0.7Å Bandpass
  • 10mm H-Alpha Blocking Filter
  • 90° Star Diagonal
  • Fits 1.25" Drawtubes and Eyepieces
  • Custom Mounting of Etalon Required

Availability: Special Order

Ship Time: 7-14 business days 

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You Pay: $1,099.00

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Top Highlights

  • Use Conventional OTAs for Solar Viewing
  • For OTA Focal Lengths up to 1500mm
  • 40mm Primary Front Etalon Filter
  • RichView Tuning System
  • Hydrogen-Alpha Bandwidth
  • 0.7Å Bandpass
  • 15mm H-Alpha Blocking Filter
  • 90° Star Diagonal
  • Fits 1.25" Drawtubes and Eyepieces
  • Custom Mounting of Etalon Required

Availability: Special Order

Ship Time: 7-14 business days 

Free Standard Shipping
Not eligible for Free Expedited Shipping

You Pay: $1,299.00

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Top Highlights

  • Use Conventional OTAs for Solar Viewing
  • For OTA Focal Lengths up to 500mm
  • 40mm Primary Front Etalon Filter
  • RichView Tuning System
  • Hydrogen-Alpha Bandwidth
  • 0.7Å Bandpass
  • 5mm H-Alpha Blocking Filter
  • 90° Star Diagonal
  • Fits 1.25" Drawtubes and Eyepieces
  • Custom Mounting of Etalon Required

Availability: Special Order

Ship Time: 7-14 business days 

Free Standard Shipping
Not eligible for Free Expedited Shipping

You Pay: $899.00

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Top Highlights

  • Use Conventional OTAs for Solar Viewing
  • For OTA Focal Lengths up to 1000mm
  • 60mm Primary Front Etalon Filter
  • RichView Tuning System
  • Hydrogen-Alpha Bandwidth
  • 0.7Å Bandpass
  • 10mm H-Alpha Blocking Filter
  • 90° Star Diagonal
  • Fits 1.25" Drawtubes and Eyepieces
  • Custom Mounting of Etalon Required

Availability: Special Order

Ship Time: 6-8 weeks 

Free Standard Shipping
Not eligible for Free Expedited Shipping

You Pay: $1,399.00

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Top Highlights

  • Use Conventional OTAs for Solar Viewing
  • For OTA Focal Lengths up to 1500mm
  • 60mm Primary Front Etalon Filter
  • RichView Tuning System
  • Hydrogen-Alpha Bandwidth
  • 0.7Å Bandpass
  • 15mm H-Alpha Blocking Filter
  • 90° Star Diagonal
  • Fits 1.25" Drawtubes and Eyepieces
  • Custom Mounting of Etalon Required

Availability: Special Order

Ship Time: 7-14 business days 

Free Standard Shipping
Not eligible for Free Expedited Shipping

You Pay: $1,439.00

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Top Highlights

  • Use Conventional OTAs for Solar Viewing
  • For OTA Focal Lengths up to 3000mm
  • 60mm Primary Front Etalon Filter
  • RichView Tuning System
  • Hydrogen-Alpha Bandwidth
  • 0.7Å Bandpass
  • 30mm H-Alpha Blocking Filter
  • Straight-Through Viewing
  • Fits 1.25" Drawtubes and Eyepieces
  • Custom Mounting of Etalon Required

Availability: Special Order

Ship Time: 7-14 business days 

Free Standard Shipping
Not eligible for Free Expedited Shipping

You Pay: $2,499.00

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Top Highlights

  • Use Conventional OTAs for Solar Viewing
  • For OTA Focal Lengths up to 1500mm
  • 90mm Primary Front Etalon Filter
  • RichView Tuning System
  • Hydrogen-Alpha Bandwidth
  • 0.7Å Bandpass
  • 15mm H-Alpha Blocking Filter
  • 90° Star Diagonal
  • Fits 1.25" Drawtubes and Eyepieces
  • Custom Mounting of Etalon Required

Availability: Special Order

Ship Time: 7-14 business days 

Free Standard Shipping
Not eligible for Free Expedited Shipping

You Pay: $3,099.00

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Top Highlights

  • Use Conventional OTAs for Solar Viewing
  • For OTA Focal Lengths up to 3000mm
  • 90mm Primary Front Etalon Filter
  • RichView Tuning System
  • Hydrogen-Alpha Bandwidth
  • 0.7Å Bandpass
  • 30mm H-Alpha Blocking Filter
  • Straight-Through Viewing
  • Fits 1.25" Drawtubes and Eyepieces
  • Custom Mounting of Etalon Required

Availability: Special Order

Ship Time: 7-14 business days 

Free Standard Shipping
Not eligible for Free Expedited Shipping

You Pay: $3,999.00

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  • For SolarMax 60 Filter

Availability: Special Order

Ship Time: 7-14 business days 

Free Standard Shipping
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You Pay: $19.99

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  • For SolarMax 90 Filter

Availability: Special Order

Ship Time: 7-14 business days 

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You Pay: $29.99

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  • Narrows Bandpass to 0.5Å
  • Tuned to H-Alpha Wavelength
  • RichView Tuning System
  • Primary Etalon/Blocking Filters Required

Availability: Special Order

Ship Time: 3-5 weeks 

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You Pay: $599.00

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  • Narrows Bandpass to 0.5Å
  • Tuned to H-Alpha Wavelength
  • RichView Tuning System
  • Primary Etalon/Blocking Filters Required

Availability: Special Order

Ship Time: 6-10 weeks 

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You Pay: $899.00

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  • Narrows Bandpass to 0.5Å
  • Tuned to H-Alpha Wavelength
  • RichView Tuning System
  • Primary Etalon/Blocking Filters Required

Availability: Special Order

Ship Time: 7-14 business days 

Free Standard Shipping
Not eligible for Free Expedited Shipping

You Pay: $2,399.00

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Top Highlights

  • Hydrogen-Alpha Bandpass
  • Straight-Viewing Optical Path
  • Fits 2" Drawtubes and Eyepieces
  • For Telescope Focal Lengths up to 3000mm
  • SolarMax Solar Viewing Filter Required

Availability: Special Order

Ship Time: 7-14 business days 

Free Standard Shipping
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You Pay: $1,584.95

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Top Highlights

  • 5895.9Å Sodium D Solar Filter
  • Engineered for Professional Research Use
  • Ideal for Observation and Photography
  • View Sunspot and Supergranulation Detail
  • Half-Bandwidth Tuning: 0.4Å
  • Electronic Doppler Tuning Control
  • 1.0 Å Offset Capability
  • Wavelength Output Accurate to 0.1Å
  • RS-232 Serial Port for Computer Control
  • Runs on 12 VDC Power

Availability: More Coming Soon

Ship Time: 4-6 weeks 

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You Pay: $6,749.00

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Top Highlights

  • For Use on Refractor and Maksutov OTAs
  • Reduces Heat Load on Filter Assembly
  • Absorbs or Reflects UV and/or IR Light
  • For H-alpha, Sodium, Helium D3 Filters
  • Inside Diameter of Cap: 13 cm (5.118")

Availability: More Coming Soon

Ship Time: 4-6 weeks 

You Pay: $499.00

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Top Highlights

  • For Use on Refractor and Maksutov OTAs
  • Reduces Heat Load on Filter Assembly
  • Absorbs or Reflects UV and/or IR Light
  • For H-alpha, Sodium, Helium D3 Filters
  • Inside Diameter of Cap: 14 cm (5.511")

Availability: More Coming Soon

Ship Time: 4-6 weeks 

You Pay: $499.00

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Top Highlights

  • For Use on Refractor and Maksutov OTAs
  • Reduces Heat Load on Filter Assembly
  • Absorbs or Reflects UV and/or IR Light
  • For H-alpha, Sodium, Helium D3 Filters
  • Inside Diameter of Cap: 15 cm (5.905")

Availability: More Coming Soon

Ship Time: 4-6 weeks 

You Pay: $499.00

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