Optical Accessories
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Accessories for solar observation (optical)
Here you can find all the accessories with which you can equip, upgrade and add to your telescope.
50mm H-alpha double-stack solar filter, for all LS50FHa filter-systems and LS60THa/LS60MT telescopes
With this filter LS60 telescopes and LS50FHa filter systems show even more details on the solar surface
1949.00 €
1754.00 €
Estimated delivery time : 3-4 days
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.
756.00 €
680.00 €
Estimated delivery time : 1-2 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. Now you can save money by combining
Hydrogen Alpha, Calcium K-Line and Calcium H-Line in one TRIBAND
pre-filter.
Product Features:
- 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 120mm 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.
832.00 €
749.00 €
Estimated delivery time : 1 week
Altair 130mm Aperture Energy Rejection filter - Ha Hydrogen Alpha only D-ERF for 5" Refractors
Product Features:
- Reduces approx. 98% of heat reaching the optics to keep Etalon from drifting off-band and protect your equipment.
- 30-40nm FHWM Bandpass at H-alpha (H) wavelength of 656.28 nm (Full Width Half Minimum) Transmission: ~90%
- 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
- 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 and will not scratch or damage your telescope. It also won't alter the balance as much as an aluminium cell.
999.00 €
899.00 €
Estimated delivery time : 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.
989.00 €
890.00 €
Estimated delivery time : 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 ...
1588.00 €
1429.00 €
Estimated delivery time : 1-2 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.
279.00 €
251.00 €
Estimated delivery time : 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.
409.00 €
368.00 €
Estimated delivery time : 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.
699.00 €
629.00 €
Estimated delivery time : 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.
95.00 €
85.50 €
Estimated delivery time : 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.
189.00 €
170.00 €
Estimated delivery time : 2-4 weeks
APM Ceramic Safety 2" Herschelkeil with APM Fast-Lock Eyepiece Adapter
Characteristics:
- High quality surfaces for best contrast values
- Completely closed body with light catch
- Pre-installed ND3 filter and integrated polarizer
- Setup of the polarizer by turning the eyepiece sleeve
- APM FastLock eyepiece sleeve
- Delivery with solid Aluminum case
- Backfocus 115 mm
- Weight 830 grams
369.00 €
295.00 €
Estimated delivery time : 1-2 days
(as from Availability)
Availability acc. to manufacturer :
16 January 2025
16 January 2025
