Houdini 1.25" 86° Coma-Correcting Eyepiece - 7mm
Stock count is accurate & shown in real time.
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
Contiguous US / Lower 48:
Free shipping applies to orders over $50 using our chosen carrier/method. Faster paid options are available at checkout.
Alaska, Hawaii & US Territories:
Free shipping applies to many—but not all—products. Enter your ZIP code in cart or upon checkout to confirm options and costs.
International:
International orders do not qualify for free shipping. Shipping, duties, brokerage, tariffs, and taxes are the customer’s responsibility. Some items may be restricted due to export, size, or manufacturer limitations.
- 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 7mm Coma-Correcting Eyepiece - 1.25 inch
Discover the Houdini 7mm 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!
Highlights
- Well-corrected ultra-wide 86° field with sharp star images across the field
- Fast f/3 Newtonian optics compatible
- Comfortable 19 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 0.5 diopters of accommodation across the field
- Low distortion delivering constant magnification
- Comfortable rubber grips
- Filter-threaded 1.25 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.
The Magic of Houdini eyepieces
These Houdini eyepieces are an innovative upgrade that elevates any stargazing experience. Designed specifically for Newtonian telescopes, it features built-in coma correction that eliminates the need for a separate corrector, resulting in a lighter, simpler setup and sharper, clearer views across the field.
Developed by passionate amateur astronomers, Houdini eyepieces deliver exceptional performance for both beginners and experienced observers. In fast f/4 Newtonians, the integrated coma correction dramatically improves edge performance, reducing star images near the field edge to one-fifth the size seen in standard eyepieces and removing the comet-like tails caused by parabolic coma.
Spot Diagram for the 7 mm Houdini Eyepiece
Other Information
- Country of Manufacture: China
- Houdini Warranty: Limited lifetime warranty for the original purchaser. Defects covered under this warranty are limited to optical coating and cementing, and normal mechanical operation of the product.
Houdini 7mm Coma-Correcting Eyepiece - 1.25 inch
Discover the Houdini 7mm 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!
Highlights
- Well-corrected ultra-wide 86° field with sharp star images across the field
- Fast f/3 Newtonian optics compatible
- Comfortable 19 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 0.5 diopters of accommodation across the field
- Low distortion delivering constant magnification
- Comfortable rubber grips
- Filter-threaded 1.25 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.
The Magic of Houdini eyepieces
These Houdini eyepieces are an innovative upgrade that elevates any stargazing experience. Designed specifically for Newtonian telescopes, it features built-in coma correction that eliminates the need for a separate corrector, resulting in a lighter, simpler setup and sharper, clearer views across the field.
Developed by passionate amateur astronomers, Houdini eyepieces deliver exceptional performance for both beginners and experienced observers. In fast f/4 Newtonians, the integrated coma correction dramatically improves edge performance, reducing star images near the field edge to one-fifth the size seen in standard eyepieces and removing the comet-like tails caused by parabolic coma.
Spot Diagram for the 7 mm Houdini Eyepiece
| Manufacturer | Houdini Telescopes |
|---|---|
| Eyepiece Series | Houdini Coma-Correcting |
| Focal Length | 7mm |
| Barrel Size | 1.25" (31.7mm) |
| Apparent Field of View (Mfg Specified) | 86° |
| Eye Relief (Designed) | 19mm |
| Eye Relief (Useable) | 15mm |
| Filter Threads | Standard 1.25" Filter Thread (M28.5 x 0.6) |
| Coatings | Fully Multi-Coated |
| Lens Elements | 9 |
| 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 52x120mm |
| Optical Design | Coma-correcting |
| Height (With Eyeguard Extended) | 5.08 in (129 mm) |
| Maximum Width | 1.9 in (47 mm) |
| End Caps | Yes |
| Field Stop Diameter | 10.5mm |
| Rubber Eye Guard | Yes - Rubber Eyecup |
| Weight | 0.64 lb (290 g) |
| Country of Manufacture | China |
| Misc. Information | *Focal Point: 0.5 mm below barrel * Barrel Length: 30mm
|
- Houdini 7mm Coma-Correcting Eyepiece - 1.25 inch
- 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 7mm Coma-Correcting Eyepiece - 1.25 inch
Discover the Houdini 7mm 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!
Highlights
- Well-corrected ultra-wide 86° field with sharp star images across the field
- Fast f/3 Newtonian optics compatible
- Comfortable 19 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 0.5 diopters of accommodation across the field
- Low distortion delivering constant magnification
- Comfortable rubber grips
- Filter-threaded 1.25 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.
The Magic of Houdini eyepieces
These Houdini eyepieces are an innovative upgrade that elevates any stargazing experience. Designed specifically for Newtonian telescopes, it features built-in coma correction that eliminates the need for a separate corrector, resulting in a lighter, simpler setup and sharper, clearer views across the field.
Developed by passionate amateur astronomers, Houdini eyepieces deliver exceptional performance for both beginners and experienced observers. In fast f/4 Newtonians, the integrated coma correction dramatically improves edge performance, reducing star images near the field edge to one-fifth the size seen in standard eyepieces and removing the comet-like tails caused by parabolic coma.
Spot Diagram for the 7 mm Houdini Eyepiece
Other Information
- Country of Manufacture: China
- Houdini Warranty: Limited lifetime warranty for the original purchaser. Defects covered under this warranty are limited to optical coating and cementing, and normal mechanical operation of the product.
| Manufacturer | Houdini Telescopes |
|---|---|
| Eyepiece Series | Houdini Coma-Correcting |
| Focal Length | 7mm |
| Barrel Size | 1.25" (31.7mm) |
| Apparent Field of View (Mfg Specified) | 86° |
| Eye Relief (Designed) | 19mm |
| Eye Relief (Useable) | 15mm |
| Filter Threads | Standard 1.25" Filter Thread (M28.5 x 0.6) |
| Coatings | Fully Multi-Coated |
| Lens Elements | 9 |
| 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 52x120mm |
| Optical Design | Coma-correcting |
| Height (With Eyeguard Extended) | 5.08 in (129 mm) |
| Maximum Width | 1.9 in (47 mm) |
| End Caps | Yes |
| Field Stop Diameter | 10.5mm |
| Rubber Eye Guard | Yes - Rubber Eyecup |
| Weight | 0.64 lb (290 g) |
| Country of Manufacture | China |
| Misc. Information | *Focal Point: 0.5 mm below barrel * Barrel Length: 30mm
|
- Houdini 7mm Coma-Correcting Eyepiece - 1.25 inch
Houdini 1.25" 86° Coma-Correcting Eyepiece - 7mm