B&H Photo Video Pro Audio The Professional's Source 800.606.6969 / 212.444.6615
0 $0.00
Your cart is currently empty

You have 0 items in your cart

View Cart & Begin Checkout

N.Y.C. Store Pickup Ready Within the Hour

Coronado SolarMax II 40mm Solar Filter Set

B&H # COS240BF5 MFR # SMF40-5
Coronado SolarMax II 40mm Solar Filter Set


Special Order
Ship Time: 7-14 business days 
Free Standard Shipping
Not eligible for free Expedited Shipping

Product Highlights

  • BF-5 90° Blocking Filter
  • Compatible w/ 500mm Focal Length Scope
  • RichView Tuning
  • Double Stack Etalon Filter
  • Upgrades a <0.5 to a <0.7 Å System
Show moreShow less

You Pay: $899.00

What item is right for you?

Ask our Experts!

This SolarMax II 40 H-Alpha Solar Viewing Filter Kit is comprised of a 40mm aperture narrowband H-a filter with the TMax tuner, and a BF-5 blocking filter. It is maximized for telescopes equal to or shorter than a 500mm focal length. The filter increases the bandwidth from <0.5 to <0.7 â¿« providing greater detail and sharpness of the solar features.

SolarMax II H-Alpha filters allow viewing of the active surface of the sun with 100% safety. None of the parts of this kit are stand-alone units - each component is equally crucial to the user's safety and the system's performance.

The SolarMax II 40 filter comes with the T-Max 40 Doppler Tuning Unit. The T-Max is used to de-tune the telescope's optical system. The wavelengths produced by high-velocity events such as active flares and coronal mass ejections (CME) can Doppler-shift and become invisible to an H-Alpha tuned system. The T-Max unit allows the user to de-tune the SolarMax filter slightly to make these phenomena more visible.

A Rear-Blocking Filter is also included in this kit, and it is designed for use with telescopes that have a focal length equal to or shorter than 500mm. The BF-5 is a 1.25" right-angle diagonal, and it must be used in conjunction with the SolarMax filters.

SolarMax II 40 H-Alpha Filter
Converts telescopes with a focal length equal to or shorter than 500 mm into a <0.7 Å solar viewing system
T-Max 40 Doppler Tuning Unit
Attached directly behind the etalon, the tuner adjusts to compensate for Doppler shifted light. By de-tuning the SolarMax filter towards the blue end of the H-Alpha line, the T-Max 40 facilitates enhanced observation and imaging of solar disk shapes, surface details, prominences, granulation, and edge activities
BF-5 Blocking Filter
Designed for use with telescopes that have a focal length equal to or shorter than 500 mm, the BF-5 is a 1.25" right angle diagonal that must be used with a SolarMax filter
Coronado SolarMax II 40mm Solar Filter Set
  • BF-5 Blocking Filter
  • SolarMax II 40mm Double Stacking Filter
  • Be the first to review this item

    Cleaning & Anti-Fog

    See more
    General Brand - Lens Cleaning Kit
    • You Pay: $4.95
    See any errors on this page? Let us know.