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As the first long-focal-ratio Flatfield astrograph from Askar, 107PHQ is born with a special mission: whether you are just getting started in astro...

130PHQ is a long-focal-ratio, flatfield astrograph newly launched after 107PHQ. Instead of buying extra flatteners, calculating the backfocus of fl...

80mm aperture, f/7 focal ratio quadruplet apochromatic refractor Designed for high-quality astrophotography and visual observation Des...

If you want the look of Hubble Space Telescope (HST) images, such as the famous “Pillars of Creation” (the Eagle Nebula, Messier 16), then the next...

Baader Planetarium Q-Barlow 2.25x / 1.3xThis high-quality 2.25x Barlow made of exotic glasses provides the rare extension factor of 2.25x. So, ther...

In perfect condition, used Baader H-alpha / O-III / S-II Ultra-Narrowband (Narrowband) filter set - Premium Grade 3.5 / 4 nm half width (to harmo...

In perfect condition, open box Baader H-alpha / O-III / S-II Narrowband Filter Set - Precision Grade 6.5 nm FWHM, recommended for optical systems...

In perfect condition, open box Filter size 31 mm - round, unmounted - filter thickness 2 mm Set of L-R-G-B filters High-quality anti-reflective ...

Baader Classic Ortho/Plössl (Q-Turret) 1¼" EyepiecesEven before the disappearance of the famed Baader Genuine Orthoscopics, Baader Planetarium soug...

Baader Classic Ortho/Plössl (Q-Turret) 1¼" EyepiecesEven before the disappearance of the famed Baader Genuine Orthoscopics, Baader Planetarium soug...

Baader Classic Ortho/Plössl (Q-Turret) 1¼" EyepiecesEven before the disappearance of the famed Baader Genuine Orthoscopics, Baader Planetarium soug...

Baader Classic Ortho/Plössl (Q-Turret) 1¼" EyepiecesEven before the disappearance of the famed Baader Genuine Orthoscopics, Baader Planetarium soug...

Variable focal length with optional extensions 68° Field of view Comfortable 22mm eye relief 1.25" and 2" compatible Camera ready (with optional a...

Baader Hyperion Eyepiece 13mm Huge 68 degree wide angle field, tailored to the maximum Visual angle of the human eye Phantom group coatings in Zei...

Baader Hyperion Eyepiece 17mm Huge 68 degree wide angle field, tailored to the maximum Visual angle of the human eye Phantom group coatings in Zei...

Baader Hyperion Eyepiece 21mm Huge 68 degree wide angle field, tailored to the maximum Visual angle of the human eye Phantom group coatings in Zei...

Baader Hyperion Eyepiece 24mm Huge 68 degree wide angle field, tailored to the maximum Visual angle of the human eye Phantom group coatings in Zei...

Variable focal length with optional extensions 68° Field of view Comfortable 20mm eye relief 1.25" and 2" compatible Camera ready (with optional a...

Variable focal length with optional extensions 68° Field of view Comfortable 20mm eye relief 1.25" and 2" compatible Camera ready (with optional a...

Baader Hyperion Eyepiece Complete Set of 7 eyepieces, including fitted foam case. Huge 68 degree wide angle field, tailored to the maximum Visual ...

Baader Hyperion Aspheric Eyepiece 31mm Huge 72 degree wide angle field, tailored to the maximum Visual angle of the human eye Phantom group coatin...

Baader Hyperion Aspheric Eyepiece 36mm Huge 72 degree wide angle field, tailored to the maximum Visual angle of the human eye Phantom group coatin...

The Baader Hyperion 8-24mm Clickstop Zoom continues the Hyperion tradition of delivering top-of-class performance and quality, at very reasonable p...