Calcium K (Ca-K) Telescopes and Filters are used to study the
wavelength of 393.4nm. This emission line is one of 2 that are produced
by Calcium just at the edge of the visible spectrum in a layer that is
slightly lower and cooler than the layer viewed in Hydrogen-alpha. The
emission line displays areas of Super Granulation Cells that are
brightest and strongest in areas of high magnetic fields such as sunspot
activity and active regions. Having the ability to study the Calcium K
and the Hydrogen-alpha line provides important insights into the
structure, strength, and depth of these active regions.
The Calcium K line is centered at 393.4nm. This
wavelength is considered to be slightly outside the visible spectrum on
the UV side. While most people can visually see the violet color of the
wavelength, many cannot resolve the contrast due to yellowing of the
cornea. People who have had cataract surgery are often able to see
considerable detail. But, it is for these reasons that the Ca-K line is
typically studied via the use of cameras which are able to provide
stunning details.
The LS60/Ca-K is a complete Solar Telescope for the Calcium-K line.
The refractor based system has a precision aligned Ca-K optimized
doublet achromat with a 60mm aperture. The focal length is 500mm
providing a ~4.5mm image thru the B1200 blocking filter. Fine focus
adjustment is achieved with a Crayford focuser with 10:1 reduction.
Internal narrowband filters allow for a
<2.4 Angstrom bandpass. Primarily an imaging system due to the
difficulty of many to visually see everything that Ca-K has to offer.
Lunt Solar will be introducing an imaging package for use with this
system.
Delivered with order:
• optical tube with 2" Crayford Focuser and tube ring
• B1200 blocking filter
• transport case
Pre-orders will be shipped in the order they are received.
