Coronado SolarMax II 60 H-Alpha Filter with BF10

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Coronado SolarMax II 60 H-Alpha Filter with BF10
Item # CI-SMF60-10
  • The Coronado SolarMax II 60 H-Alpha Filter has 60mm of clear aperture, with a wavelength of 6562.8A (H-alpha) and a bandwidth of <0.7A.
  • Threaded to fit the TeleVue Pronto or TV76, but can fit on other instruments with proper adapter plate (sold separately).
  • The Coronado SolarMax II 60 H-Alpha Filter package comes with a BF-10 and RichView tuner - maximized for refractor telescopes with a focal length of 1000mm and under.
  • All the filters in this series are thermally stable and mount to the front of of the telescope.


Coronado SolarMax II 60 H-Alpha Filter with BF10 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 BF-10 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 BF10 is mounted inside the body of a 1-1/4" right-angle diagonal. It is optimized to provide a full disc image on telescopes with a focal length of up to 1000mm.

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. To add them to your order, just click on the "Accessories" tab and choose the appropriate items.

  • 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!

Additional Information

Additional Information

Aperture 60mm
Emission Line H-Alpha
Bandwidth <0.7A
Blocking Filter Included BF10
Best for Focal Lengths of... 1200mm & Under
Blocking Filter Barrel Size 1.25"
Manufacturer Coronado
Warranty 1 Year Warranty
Wavelength <0.7A
Tuner Included? Yes

Customer Reviews 1 item(s)

Awesome Rayz
I purchased a 60mm with BF10 and T-max from OPT in December of 2004. I really didn't know what to expect as it was my first Solar telescope. I did some research and found that the Solar Max line was capable of attaching to my Orion 80ED with the correct adapter. OPT helped me get the right adapter for my scope and the filter was in stock so I had it in a couple of days.

The view was simply breath taking. The filter is built very solid from quality aluminum parts. It comes in a case which holds the main filter and the BF filter. It also has slots in the case for eyepieces. The filter performed so well and I was so taken by the view I got a 2nd filter 5 months down the road to take the view from <.7 angstrom to <.5 angstrom. The 60 is just the right size for full disk images and medium closeups. It provides both portability and resolution in a small package.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Larry Alvarez / (Posted on 11/18/2007)
Included Items

Included Items

  • Coronado 60mm <0.7A H-Alpha Etalon Filter
  • 10mm Blocking Filter
  • RichView Tuner
  • Case
Questions & Answers

Product Questions

I have a BF15 blocking filter produced before Coronado was purchased by Meade (used with an original Coronado 40mm Ha filter). Is is possible to purchase a new 60mm Ha filter without a blocking filter for use with my old BF15?
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