Coronado SolarMax II 60 H-Alpha Filter w/ BF30

  • Sale
  • Regular price $2,499.00
  • Coronado SolarMax II 60 H-Alpha Filter w/ BF30

    • Sale
    • Regular price $2,499.00
    • ITEM #



    Coronado SolarMax II 60 H-Alpha Filter w/ BF30

    Coronado SolarMax II 60 H-Alpha Filter with BF30 and RichView Tuner

    The Coronado SolarMax II 60 H-Alpha Filter is part of a series of thermally stable H-alpha filters for installation on the user's telescope. All the filters in this series are thermally stable and mount to the front of of the telescope. They provide very high resolution and give unsurpassed views of the finest of surface details, including plage, flares, filaments, prominences, and granulation when mounted to a good quality telescope.

    This SolarMax II 60 comes with a straight-through BF-30 blocking filter, a secondary interference filter which mounts at the eyepiece end of the telescope. You cannot use the individual units (either the blocking filter or the front-mounted SolarMax's) separately. The BF30 is straight-through. It is optimized to provide a full disc image on telescopes wiith a focal length of up to 3000mm.

    About the RichView Tuner...

    Some events on the Sun, notably active flares and coronal mass ejections (CME's) are extremely fast moving. If such features occur on the disc of the Sun, their high velocity towards the observer results in their wavelength being Doppler-shifted shorter than Ha. If the velocity is high enough, this wavelength could be outside the passband of the filter and the feature would not be observable. The RichView allows the user to de-tune the SolarMax II slightly to bring such phenomena into better visibility. The RichView fits between the SolarMax II and it's adapter plate, sold separately. A simple rotary wheel movement accomplishes the tilt necessary to move the passband of the filter. Because of the filter's position at the front end of the telescope, this does not compromise the performance of the filter nor limit the Ha field of view as is the case with rear-mounted filters.

    Below you'll find a list of explanations regarding important accessories that may be required for this product.

    • An adapter plate is required to attach this filter to your telescope. Coronado is no longer producing these adapters however, Ashley Precision Parts is providing custom adapters for our customers. Please provide the telescope you will be adapting to, the outer diameter and whether you need a slip fit or threaded plate, in the comments section during check out. If you have any questions regarding these plates, please feel free to email our internet sales team for more information.
    Important Note: OPT highly recommends a 2nd Day Air shipping upgrade on this product. Please read Coronado's new Shipping Policy (PDF, 60K) for important information regarding this recommendation...your choice could affect the manufacturer's warranty!

    Coronado Instruments Product Number: SMF60-30

    Additional Information

    Aperture60 mm (2.36")
    Blocking Filter Barrel Size1.25"
    Emission LineAlpha
    Free ShippingYes
    Optimized For600mm & Under
    Tuner IncludedYes
    Warranty1 Year Warranty
    Wavelength<0.7 A

    Questions & Answers

    Have a Question?

    Be the first to ask a question about this.

    Ask a Question

    Make easy monthly payments over 3, 6, or 12 months

    Rates from 10–30% APR.

    Quick and easy

    Enter a few pieces of information for a real-time decision. Checking your eligibility won't affect your credit score.

    No hidden fees

    Know up front exactly what you'll owe, with no hidden costs and no surprises.

    Just select Affirm at checkout.