7,500+ items available from stock
Best price guarantee
Your partner for astronomy
Solar Observation > Solar Filters > Mounted glass filters > Lunt Solar Systems > Lunt Solar Systems Filters Ca-K module with 6mm blocking filter in star diagonal for 2" focuser
Product no.: 15925

Filters Ca-K module with 6mm blocking filter in star diagonal for 2" focuser

$ 2,070.00 incl. VAT, plus shipping costs
too expensive?
short-term
ready for shipping in 1-2 weeks + lead time

Product description

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.

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 CaK has to offer.

Delivered with order:

  • Star Diagonal with T2 connection, for 2″ Focuser
  • blocking filter B600 with IR and UV protection

Specifications

Capacity


Connection (to the telescope)
2"
Half-value width
2,4

General


Type
Solar Filters
Type of build
line filter

Recommended accessories

Telescope accessories (1)

Geoptik Sun protection for15/17" screen laptops

$ 86.00*
Outdoor (1)

Lunt Solar Systems Sun hat with neck protector

$ 65.00*

*All prices include VAT plus shipping costs.

Lunt Solar Systems Filters Ca-K module with 6mm blocking filter in star diagonal for 2" focuser

Customer reviews

There are no customer reviews for this product yet.

Compose your own review

Do you have specific questions about your order or products? Please contact our customer service!

Customers who bought this product also bought...