Hydrogen Alpha T-Scanner Bandpass Filter
wpe7.jpg (14566 bytes)
DayStar Sub-angstrom Hydrogen Alpha filtters are rear-mounted filter assemblies designed to operate at the eyepiece position of the telescope.  This allows greater adaptability to different telescope configurations and for larger telescope apertures. Rear-mounted filter systems allow for high resolution observing and imaging at focal lengths frequently in excess of 1000mm. Our filters are classified by bandwidth, not aperture. Narrower bandwidth filters reduce off-band transmitence and increase contrast. The smaller the bandwidth, the higher the contrast between on and off/band light.  

  • DayStar T-Scanner Filters require NO POWER to operate properly.
  • DayStar T-Scanner Filters are very inexpensively priced.
  • DayStar T-Scanners can be mounted on almost any telescope from 60mm to 600mm.
  • DayStar T-Scanners can be used full aperture* on most telescopes.
  • DayStar T-Scanner Filters can show a choice of the full disk or high resolution.
  • DayStar T-Scanners are robust. Shipping by ground service does NOT void our 10 year warranty
The T-Scanner model (like all non-heated narrow bandpass solar filters) is designed to operate best at an ambient 75 degree temperature with a tilt knob adjustment to accomodate a shift of approximately 20 degrees F. Observers in climates likely to vary greatly who want to use their filters year-round without temperature concerns should consider the Quantum Series as an affordable option.
Half-bandwidth FWHM
(Maximum @ f/30)
Price
Views to Expect
0.8 ångström
 $1650.00
0.7 Angstrom ImageFilters with 0.8 ångström bandwidths will reveal prominences in high contrast.
0.7 ångström
 $2200.00
wpeA2.jpg (38961 bytes)Filters with 0.7 ångström bandwidths will reveal prominences in high contrast and occasionally, surface texture.
0.6 ångström
 $3100.00
0.6 Angstrom imageFilters with 0.6 ångström bandwidths will reveal some surface contrast as well as prominences.  
0.5 ångström
 $4000.00
0.5 Angstrom ImageFilters with 0.5 ångström bandwidths will reveal better surface contrast as well as great prominences.
0.4 ångström
 $5200.00
0.4 Angstrom imageFilters with 0.4 ångström bandwidths will reveal excellent surface contrast as well as fine chromosphere detail.
0.3 ångström
 $6350.00

* HALF-BANDWIDTH: The term half-bandwidth refers to an optics industry standard of measure.  On a chart depicting the peak where light is transmitted, that peak's width is measured at the point 50% between zero and full transmission. This term is called half-bandwidth.
The Sun Today
Hydrogen Alpha Filters
Current Delivery Times:

12 weeks for:
 Blocker and Trimmers
T-Scanners
CaII H line filters
Quantum upgrade:  
Quantum SE Filters

6 months for:
Quantum PE Filters
Ca II K Line PE Filters
Sodium Line Filters
DayStar Filters LLC • 149 Northwest OO Highway • Warrensburg, MO 64093 - USA
Telephone: 866-680--6563 • service@daystarfilters.com • FAX: 1-866-791-0448