Antlia Filters H-Beta - OIII 1,25" (85528)
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Antlia Filters H-Beta - OIII 1,25" (85528)
210.9 $
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The Antlia HB-OIII filter features an almost complete optical density (OD4) coating at key wavelengths, with a cut-off range of 300-1000 nm. This design meets the spectral requirements of astronomical cameras and offers enhanced suppression of the infrared range. Compared to standard visual filters, which typically have an OD3 cut-off from 350-750 nm, this filter more effectively darkens the sky background, making it easier to observe and photograph deep sky objects such as nebulae, star clusters, and galaxies.
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Astro-Physics Reducer 0.67x 2" (51284)
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Astro-Physics Reducer 0.67x 2" (51284)
274.36 $
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The Astro Physics Tele Compressor was originally designed for telescopes with a focal ratio of f/9 or higher, but practical use has shown that it also works exceptionally well with GSO’s RC telescopes. It delivers sharp star images across a 29 mm diameter field. When used with an SLR camera, the required spacing can be achieved using a TS Optics 2"/T2 focal adapter, providing the standard 55 mm distance to the camera sensor needed for DSLRs with a T2 ring.
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Astronomik Filters H-alpha 12nm 50mm (62750)
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Astronomik Filters H-alpha 12nm 50mm (62750)
297.69 $
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The H-alpha filter transmits light at a wavelength of 656 nm, making it an excellent choice for narrowband H-alpha astrophotography. It delivers high-contrast images and reveals rich nebular details, even in areas with strong light pollution. These 50 mm filters are compatible with all 50 mm filter wheels from ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian, and Atik. The filter design includes a protective ring and blackened edges to prevent stray light, provide mechanical protection, and make handling easier. 
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Astronomik Filters HSO 12nm 1,25" (85948)
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Astronomik Filters HSO 12nm 1,25" (85948)
335.02 $
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H-alpha Filter: This filter is designed for photographing hydrogen nebulae both in areas with artificial light pollution and at dark-sky locations. It significantly enhances the contrast between H-alpha emitting objects and the sky background. With a narrow half-width of 12 nm and high transmission close to 100% in the H-alpha line, it provides much greater contrast than broadband filters. The 12 nm half-width is optimized for typical CCD and CMOS sensors.
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Astronomik Filters HSO 12nm 2" (85949)
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Astronomik Filters HSO 12nm 2" (85949)
708.3 $
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H-alpha Filter: This filter is designed for photographing hydrogen nebulae, whether you are in areas with artificial light pollution or under dark skies. It significantly boosts the contrast between H-alpha emitting objects and the sky background. With its narrow 12 nm half-width and nearly 100% transmission at the H-alpha line, this filter provides a much greater contrast increase than broadband filters. The 12 nm half-width is ideally suited for typical CCD and CMOS sensors.
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Astronomik Filters HSO 12nm 31mm (85950)
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Astronomik Filters HSO 12nm 31mm (85950)
409.67 $
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H-alpha Filter: This filter is designed for photographing hydrogen nebulae, whether you are in areas with artificial light pollution or under dark skies. It significantly enhances the contrast between H-alpha emitting objects and the background sky. Thanks to its narrow 12 nm half-width and almost 100% transmission at the H-alpha line, this filter provides much greater contrast than broadband filters. The 12 nm half-width is specifically optimized for use with typical CCD and CMOS sensors.
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Astronomik Filters HSO 12nm 36mm (85951)
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Astronomik Filters HSO 12nm 36mm (85951)
465.67 $
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H-alpha Filter: This filter is ideal for photographing hydrogen nebulae, whether you are in areas with strong artificial light pollution or under dark skies. It greatly enhances the contrast between objects that emit H-alpha light and the background sky. With its narrow 12 nm half-width and nearly 100% transmission at the H-alpha wavelength, this filter achieves significantly higher contrast than broadband filters. The 12 nm half-width is perfectly suited for typical CCD and CMOS sensors.
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Astronomik Filters HSO 12nm 50mm (85952)
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Astronomik Filters HSO 12nm 50mm (85952)
745.63 $
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H-alpha Filter: This filter is ideal for photographing hydrogen nebulae from both light-polluted areas and dark sky locations. It greatly enhances the contrast between objects glowing in H-alpha light and the sky background. With a narrow 12 nm half-width and nearly 100% transmission at the H-alpha wavelength, this filter offers significantly greater contrast than broadband filters. The 12 nm half-width is optimized for use with typical CCD and CMOS sensors.
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Astronomik Filters HSO 6nm 1.25" (85953)
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Astronomik Filters HSO 6nm 1.25" (85953)
465.67 $
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H-alpha Filter: This filter is designed for photographing hydrogen nebulae from both light-polluted areas and dark sky locations. It greatly increases the contrast between objects that emit H-alpha light and the background sky. SII Filter: The SII filter is suitable for imaging sulfur emission regions, whether you are in areas with strong light pollution or under dark skies. It enhances the contrast between objects glowing in the sulfur line at 672 nm and the sky background.
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Astronomik Filters HSO 6nm 2" (85954)
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Astronomik Filters HSO 6nm 2" (85954)
1081.58 $
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H-alpha Filter: This filter is ideal for photographing hydrogen nebulae, whether you are working in light-polluted areas or under dark skies. It significantly enhances the contrast between objects that emit H-alpha light and the background sky. SII Filter: The SII filter is suitable for imaging sulfur emission regions from both light-polluted locations and dark-sky sites. It greatly increases the contrast between objects glowing in the sulfur line at 672 nm and the sky background.
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Astronomik Filters HSO 6nm 31mm (85955)
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Astronomik Filters HSO 6nm 31mm (85955)
558.99 $
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H-alpha Filter: This filter is perfect for photographing hydrogen nebulae, whether you are in light-polluted areas or under dark skies. It greatly enhances the contrast between objects that emit H-alpha light and the background sky. SII Filter: The SII filter is designed for imaging sulfur emission regions, both from light-polluted locations and dark-sky sites. It dramatically increases the contrast between objects glowing in the sulfur line at 672 nm and the sky background.
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Astronomik Filters HSO 6nm 36mm (85956)
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Astronomik Filters HSO 6nm 36mm (85956)
698.97 $
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H-alpha Filter: This filter is ideal for photographing hydrogen nebulae, whether you are working in light-polluted areas or under dark skies. It significantly enhances the contrast between objects that emit H-alpha light and the background sky. SII Filter: The SII filter is designed for capturing sulfur emission regions, suitable for both light-polluted locations and dark-sky sites. It dramatically increases the contrast between objects glowing in the sulfur line at 672 nm and the sky background.
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Astronomik Filters HSO 6nm 50mm (85957)
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Astronomik Filters HSO 6nm 50mm (85957)
1081.58 $
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H-alpha Filter: This filter is designed for photographing hydrogen nebulae in both light-polluted environments and dark-sky locations. It greatly enhances the contrast between objects that emit H-alpha light and the surrounding sky background. SII Filter: The SII filter is ideal for capturing sulfur emission regions, whether you are shooting from light-polluted areas or dark skies. It significantly increases the contrast between objects glowing in the sulfur line at 672 nm and the sky background.
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Paton Hawksley Hand spectroscope (44959)
Paton Hawksley Hand spectroscope (44959)
102.4 $
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This transmitted light spectroscope is a simple yet precise instrument designed for observing and analyzing the spectra of various light sources. It features a tube with a precision entrance slit and a 600 lines-per-millimetre grating, allowing users to easily point it at different light sources such as the sky (to observe the solar spectrum and Fraunhofer absorption lines), flames for chemical analysis, liquids for their absorption spectra, or the bright lines from discharge tubes and lamps.
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Starlight Xpress Spectroscope SX with Lodestar X2 Autoguider (48690)
Starlight Xpress Spectroscope SX with Lodestar X2 Autoguider (48690)
5253.03 $
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This compact spectroscope features a high-performance flat-field concave grating in a module measuring just 136 x 120 x 75 mm and weighing 1.2 kg. It includes a built-in Lodestar X2 guide camera and an argon-neon calibration lamp for precise wavelength calibration. Both the input and output are equipped with T2 threads, making the unit compatible with most imaging cameras that use T2 thread connections. Starlight Xpress recommends pairing this spectroscope with the Trius SX-694 camera for optimal performance.
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