Observe the Sun

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Sonnenbeobachtung

Solar observation is a very interesting area of Astronomy. There is something new to see here practically every day. Our home star is constantly changing! Regardless of in white light or in the narrow-band hydrogen or calcium band, observations of the processes on the sun are very impressive!

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With this filter LS60 telescopes and LS50FHa filter systems show even more details on the solar surface
1949.00 €
Delivery date : 3-4 days
 
 
With this filter LS60 telescopes and LS60FHa filter systems show even more details on the solar surface
2999.00 €
Delivery date : Will be ordered for you
 
 
The Altair Dichroic Solar Energy Rejection Filter or D-ERF protects your telescope and solar imaging equipment from excessive heat build-up when solar imaging ...
719.00 €
Delivery date : 2-4 weeks
 
 
The Altair Dichroic Solar Energy Rejection Filter or D-ERF protects your telescope and solar imaging equipment from excessive heat build-up when solar imaging or observing with your Daystar Hydrogen Alpha Quark, or other Hydrogen Alpha Etalon filters.

  • Reduces approx. 98% of heat reaching the optics to keep Etalon from drifting off-band and protect your equipment.
  • 30nm FHWM Bandpass at H-alpha (H) wavelength of 656.28 nm (Full Width Half Minimum) Transmission: ~95.5%
  • 40nm FHWM Bandpass with CWL at 395nm covering Calcium H-Line and Calcium K-Line wavelengths. Transmission: ~90.5%
  • UVIR blocking OD3 0.1% @400-1100nm blocking over 98% of heat to your 3rd party Etalon at eyepiece or camera end, E.g. Daystar Quark). Please note it's your responsibility to use a proper commercial Etalon with this product, and to follow the manufacturer's instructions.
  • Visible light blocking: OD4 0.01% @400-700nm to reduce reflection effects and over 98% of heat.
  • Diameter 140mm Thickness 12.0mm (required to achieve surface precision)
  • Multilayer coatings with SiO2 protective overcoat.
  • ERF Holder cell included with soft tip threaded knobs. Tough and very light, easy to disassemble for cleaning the filter with optical wipes. Cell does not put any tension on the optics.
1190.00 €
Delivery date : 2-4 weeks
 
 

The Altair Solar Energy Rejection Filter or D-ERF protects your telescope and solar imaging equipment from excessive heat build-up when solar imaging or observing with your Daystar Ha Quark, or other Etalon filters.

1675.00 €
Delivery date : 2-4 weeks
 
 
The Altair Dichroic Solar Energy Rejection Filter or D-ERF protects your telescope and solar imaging equipment from excessive heat build-up when solar imaging ...
1429.00 €
Delivery date : 2-4 weeks
 
 

The Altair Solar Energy Rejection Filter or D-ERF protects your telescope and solar imaging equipment from excessive heat build-up when solar imaging or observing with your Daystar Ha Quark, or other Etalon filters.

1739.00 €
Delivery date : 2-4 weeks
 
 
Another first for solar astronomy, the Altair G-Band 2nm Solar filter enhances finer details in the solar photosphere.

Altair 2nm G-Band Solar Contrast Filter filter specifications: 

  • Standard 1.25" Filter Threaded Aluminium Cell
  • CWL 430.3nm @ 96% transmission, tolerance 1%
  • FWHM 2nm, tolerance 0.5nm.
  • 1.85mm thick quartz ?/4, Parallelism (arcsec) 30"
  • Si02 "hard" overcoat with UVIR Block 300-1100nm and Anti-Reflection Coating
  • High resolution spectrographic test report included corresponding to each individual filter.
239.00 €
Delivery date : 2-4 weeks
 
 
Another first for solar astronomy, the Altair G-Band 2nm Solar filter enhances finer details in the solar photosphere.

Altair 2nm G-Band Solar Contrast Filter filter specifications: 

  • Standard 2" Filter Threaded Aluminium Cell
  • CWL 430.3nm @ 96% transmission, tolerance 1%
  • FWHM 2nm, tolerance 0.5nm.
  • 1.85mm thick quartz ?/4, Parallelism (arcsec) 30"
  • Si02 "hard" overcoat with UVIR Block 300-1100nm and Anti-Reflection Coating
  • High resolution spectrographic test report included corresponding to each individual filter.
339.00 €
Delivery date : 2-4 weeks
 
 
The Altair Dichroic Solar Energy Rejection Filter or D-ERF protects your telescope and solar imaging equipment from excessive heat build-up when solar imaging or observing with your Daystar Hydrogen Alpha Quark, or other Hydrogen Alpha Etalon filters.
729.00 €
Delivery date : 2-4 weeks
 
 
The Altair 1.25" Solar Continuum filter Enhances sunspots, granulation, and fine photosphere detail. For use with Baader Solar Filter or Herschel Wedge.
89.00 €
Delivery date : 2-4 weeks
 
 
The Altair 2" Solar Continuum filter Enhances sunspots, granulation, and fine photosphere detail. For use with Baader Solar Filter or Herschel Wedge.
169.00 €
Delivery date : 2-4 weeks