Houdini 2" 86° Coma-Correcting Eyepiece - 30mm
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- Coma-Correcting Optics: Built-in correction delivers sharp, pinpoint stars all the way to the edge of its ultra-wide 86° field, especially in Newtonian telescopes.
- Ultra-Wide 86° Apparent Field: Provides an immersive, space-walk viewing experience with expansive views ideal for deep-sky observing.
- Glow-in-the-Dark Focal Length Marking: The illuminated marking makes it easy to identify the eyepiece at night without ruining your dark adaptation.
- Broad Telescope Compatibility: Works best with Newtonians and slower f/6+ telescopes, while avoiding fast refractors and coma-free designs where correction isn’t needed
Houdini 30 mm 86° Coma-Correcting Eyepiece
Discover the Houdini 30mm 86° Coma-Correcting Eyepiece, a premium eyepiece engineered to deliver ultra-wide, sharp, high-contrast views with minimal aberrations. Designed to tame coma and maintain a flat, distortion-free 86° field of view, it excels in Newtonian and long-focal-ratio telescopes; bringing crisp detail to expansive star clusters, intricate nebulae, and the lunar surface from edge to edge!
Its easy-to-use design ensures comfortable viewing during long observing sessions, with no need for spacing adjustments or separate coma correctors. Simply insert the eyepiece, bring it into focus, and enjoy immersive, pinpoint views across the entire field.
Check out this video directly from Houdini showcasing the world's first coma-correcting eyepiece series for Newtonian telescopes!
Houdini Highlights
- Well-corrected ultra-wide 86° field with sharp star images across the field
- Fast f/3 Newtonian optics compatible
- Comfortable 20 mm eye relief with foldable rubber eye cup
- Multi-coated optics and high transmission glass
- Blackened edges for minimized stray light
- Flat field requiring less than 0.7 diopters of accommodation across the field
- Low distortion delivering constant magnification
- Comfortable rubber grips
- Filter-threaded 2 in barrel
- Safety kerfs that do not lock, slip, or tilt
- Eyepiece cap with glow in the dark focal length markings
Will it work in my telescope?
The Houdini eyepieces were designed for Newtonian telescopes with parabolic mirrors, but they will also work well with any telescope with a focal ratio of f/6 or slower (f/8, f/10, etc.). This includes slow refractors and most popular Schmidt-Cassegrain telescopes.
The eyepiece is not recommended for use with fast telescope systems without parabolic mirror, such as f/5 APO refractors.
Houdini Eyepiece Performance
The following graph illustrates the performance of the Houdini eyepieces in a F/4 Newtonian telescope. Spot diagrams with 3,000 rays are shown at the center, halfway, and near the edge of the field.
The spots have been strongly magnified to show them clearly. In the center of the field a spot diagram smaller than 2' is almost perfect, at the edge a spot diagram smaller than 10' is considered excellent. The top left shows 2' and 5' circles.
There is no trace of coma left in the Houdini spot diagrams. Some spherical aberration and some lateral color remain, which shows on very bright objects, such as a magnitude 1 star or Jupiter, at the edge of the field. This is not visible at all in a typical deep sky field that does not contain magnitude 1 stars. Such a field will appear essentially sharp from edge to edge.
Other Information
- Country of Manufacture: United States
Houdini 30 mm 86° Coma-Correcting Eyepiece
Discover the Houdini 30mm 86° Coma-Correcting Eyepiece, a premium eyepiece engineered to deliver ultra-wide, sharp, high-contrast views with minimal aberrations. Designed to tame coma and maintain a flat, distortion-free 86° field of view, it excels in Newtonian and long-focal-ratio telescopes; bringing crisp detail to expansive star clusters, intricate nebulae, and the lunar surface from edge to edge!
Its easy-to-use design ensures comfortable viewing during long observing sessions, with no need for spacing adjustments or separate coma correctors. Simply insert the eyepiece, bring it into focus, and enjoy immersive, pinpoint views across the entire field.
Check out this video directly from Houdini showcasing the world's first coma-correcting eyepiece series for Newtonian telescopes!
Houdini Highlights
- Well-corrected ultra-wide 86° field with sharp star images across the field
- Fast f/3 Newtonian optics compatible
- Comfortable 20 mm eye relief with foldable rubber eye cup
- Multi-coated optics and high transmission glass
- Blackened edges for minimized stray light
- Flat field requiring less than 0.7 diopters of accommodation across the field
- Low distortion delivering constant magnification
- Comfortable rubber grips
- Filter-threaded 2 in barrel
- Safety kerfs that do not lock, slip, or tilt
- Eyepiece cap with glow in the dark focal length markings
Will it work in my telescope?
The Houdini eyepieces were designed for Newtonian telescopes with parabolic mirrors, but they will also work well with any telescope with a focal ratio of f/6 or slower (f/8, f/10, etc.). This includes slow refractors and most popular Schmidt-Cassegrain telescopes.
The eyepiece is not recommended for use with fast telescope systems without parabolic mirror, such as f/5 APO refractors.
Houdini Eyepiece Performance
The following graph illustrates the performance of the Houdini eyepieces in a F/4 Newtonian telescope. Spot diagrams with 3,000 rays are shown at the center, halfway, and near the edge of the field.
The spots have been strongly magnified to show them clearly. In the center of the field a spot diagram smaller than 2' is almost perfect, at the edge a spot diagram smaller than 10' is considered excellent. The top left shows 2' and 5' circles.
There is no trace of coma left in the Houdini spot diagrams. Some spherical aberration and some lateral color remain, which shows on very bright objects, such as a magnitude 1 star or Jupiter, at the edge of the field. This is not visible at all in a typical deep sky field that does not contain magnitude 1 stars. Such a field will appear essentially sharp from edge to edge.
| Manufacturer | Houdini Telescopes |
|---|---|
| Eyepiece Series | Coma-Correcting |
| Focal Length | 30 mm |
| Barrel Size | 2 in |
| Apparent Field of View (Mfg Specified) | 86° |
| Eye Relief (Designed) | 20 mm |
| Eye Relief (Useable) | 15 mm |
| Filter Threads | M48 x 0.75 |
| Coatings | Multi-Coating |
| Lens Elements | 8 |
| Lens Groups | 6 |
| Blackened Lens Edges | Yes |
| Barrel Type | With safety kerfs |
| Protective Storage Container Included | No |
| Protective Plastic Storage Container Size (Sold Separately) | Agena 65x120mm |
| Optical Design | Coma-correcting |
| Height (With Eyeguard Extended) | 5.51 in (140 mm) |
| Height (Without Eyeguard) | 2.52 in (64mm) |
| Maximum Width | 64.5 mm |
| End Caps | 2 |
| Eye Lens Diameter | 31.6 mm |
| Field Stop Diameter | 42.0 mm |
| Rubber Eye Guard | Yes - Rubber Eyecup |
| Weight | 1.28 lbs (580 gr) |
| Country of Manufacture | China |
| Misc. Information | * Focal Point: 2mm above barrel
|
- Houdini 2" 30mm 86° Coma-Correcting Eyepiece
- Coma-Correcting Optics: Built-in correction delivers sharp, pinpoint stars all the way to the edge of its ultra-wide 86° field, especially in Newtonian telescopes.
- Ultra-Wide 86° Apparent Field: Provides an immersive, space-walk viewing experience with expansive views ideal for deep-sky observing.
- Glow-in-the-Dark Focal Length Marking: The illuminated marking makes it easy to identify the eyepiece at night without ruining your dark adaptation.
- Broad Telescope Compatibility: Works best with Newtonians and slower f/6+ telescopes, while avoiding fast refractors and coma-free designs where correction isn’t needed
Houdini 30 mm 86° Coma-Correcting Eyepiece
Discover the Houdini 30mm 86° Coma-Correcting Eyepiece, a premium eyepiece engineered to deliver ultra-wide, sharp, high-contrast views with minimal aberrations. Designed to tame coma and maintain a flat, distortion-free 86° field of view, it excels in Newtonian and long-focal-ratio telescopes; bringing crisp detail to expansive star clusters, intricate nebulae, and the lunar surface from edge to edge!
Its easy-to-use design ensures comfortable viewing during long observing sessions, with no need for spacing adjustments or separate coma correctors. Simply insert the eyepiece, bring it into focus, and enjoy immersive, pinpoint views across the entire field.
Check out this video directly from Houdini showcasing the world's first coma-correcting eyepiece series for Newtonian telescopes!
Houdini Highlights
- Well-corrected ultra-wide 86° field with sharp star images across the field
- Fast f/3 Newtonian optics compatible
- Comfortable 20 mm eye relief with foldable rubber eye cup
- Multi-coated optics and high transmission glass
- Blackened edges for minimized stray light
- Flat field requiring less than 0.7 diopters of accommodation across the field
- Low distortion delivering constant magnification
- Comfortable rubber grips
- Filter-threaded 2 in barrel
- Safety kerfs that do not lock, slip, or tilt
- Eyepiece cap with glow in the dark focal length markings
Will it work in my telescope?
The Houdini eyepieces were designed for Newtonian telescopes with parabolic mirrors, but they will also work well with any telescope with a focal ratio of f/6 or slower (f/8, f/10, etc.). This includes slow refractors and most popular Schmidt-Cassegrain telescopes.
The eyepiece is not recommended for use with fast telescope systems without parabolic mirror, such as f/5 APO refractors.
Houdini Eyepiece Performance
The following graph illustrates the performance of the Houdini eyepieces in a F/4 Newtonian telescope. Spot diagrams with 3,000 rays are shown at the center, halfway, and near the edge of the field.
The spots have been strongly magnified to show them clearly. In the center of the field a spot diagram smaller than 2' is almost perfect, at the edge a spot diagram smaller than 10' is considered excellent. The top left shows 2' and 5' circles.
There is no trace of coma left in the Houdini spot diagrams. Some spherical aberration and some lateral color remain, which shows on very bright objects, such as a magnitude 1 star or Jupiter, at the edge of the field. This is not visible at all in a typical deep sky field that does not contain magnitude 1 stars. Such a field will appear essentially sharp from edge to edge.
Other Information
- Country of Manufacture: United States
| Manufacturer | Houdini Telescopes |
|---|---|
| Eyepiece Series | Coma-Correcting |
| Focal Length | 30 mm |
| Barrel Size | 2 in |
| Apparent Field of View (Mfg Specified) | 86° |
| Eye Relief (Designed) | 20 mm |
| Eye Relief (Useable) | 15 mm |
| Filter Threads | M48 x 0.75 |
| Coatings | Multi-Coating |
| Lens Elements | 8 |
| Lens Groups | 6 |
| Blackened Lens Edges | Yes |
| Barrel Type | With safety kerfs |
| Protective Storage Container Included | No |
| Protective Plastic Storage Container Size (Sold Separately) | Agena 65x120mm |
| Optical Design | Coma-correcting |
| Height (With Eyeguard Extended) | 5.51 in (140 mm) |
| Height (Without Eyeguard) | 2.52 in (64mm) |
| Maximum Width | 64.5 mm |
| End Caps | 2 |
| Eye Lens Diameter | 31.6 mm |
| Field Stop Diameter | 42.0 mm |
| Rubber Eye Guard | Yes - Rubber Eyecup |
| Weight | 1.28 lbs (580 gr) |
| Country of Manufacture | China |
| Misc. Information | * Focal Point: 2mm above barrel
|
- Houdini 2" 30mm 86° Coma-Correcting Eyepiece
Houdini 2" 86° Coma-Correcting Eyepiece - 30mm