Check out my other items
! Be sure to add me to your favorites list
A Precision Interference Filter for EBAY Astronomers that selectively passes the 394 nm CaK. This filter is intended for solar flare photography, Specifically produced for EBAY customers fom NOS OEM customers.
The filter comes as a single component, mounted in a standard 28mm or 1.25" Eyepiece ring.
See the attached photos thanks to John Paladini.
6 inch B+W video stack 80 393 caK
notice arching spray in one of sunspots
Central Pass Wavelengths 394nm, when aligned and tuned for maximum contrast.
The filter is a narrow passband at 394, integrated with highly attenuating filters to remove longer wavelength light to 10e++7. Primary Pass bands and blocking filter in series allow typical 10% to 20% transmission of the CaK band.
Background attenuation OD 7+, UV to 1500nm
Size; 25mm in 18mm (1 1/4') eyepiece holder.
Filter supplied with actual spectral data.
If you don't find your need, try a wild card search. Go to my BJOMEJAG EBUYER STORE and add an * or so to the description, to get close matches.
For a most comprehensive assortment of filter solutions, follow the link at my store, under "Technical Data" to the Omega 'Build A Filter' tool. Millions of potential matches are available. Prices are very reasonable if you indicate "cosmetic seconds acceptable".
Powered by eBay Turbo Lister
The free listing tool. List your items fast and easy and manage your active items.
On May-07-12 at 04:53:52 PDT, seller added the following information: