What Astro-Physics does

Astro-Physics is a privately-held, founder-led US manufacturer of high-precision astronomical telescopes and German Equatorial Mounts (GEMs), headquartered in Machesney Park, Illinois. Founded by Roland Christen around 1969, the company designs and hand-finishes its products in-house, with a portfolio spanning StarFire Christen Superachromat refractor telescopes (92mm to 190mm aperture), Maksutov-Cassegrain optics (up to 254mm), and precision equatorial mounts (Mach2, 1150, 1600, 3600 series) featuring proprietary GTOCP4 servo control with 0.05 arc-second per step resolution and optional absolute encoders reducing periodic error below 0.2 arc-seconds. Each mount is individually tested on specialized periodic error equipment and must meet a <5 arc-second accuracy spec before shipment.

The business model is direct-to-consumer hardware sales through the company's e-commerce storefront, supplemented by an authorized retailer network and international direct shipping. SKUs range from approximately $29 for small accessories to $22,000 for the flagship 254mm Maksutov-Cassegrain, with flagship mounts priced at $14,900. Demand has consistently exceeded production capacity since the 1980s, requiring notification lists and random-drawing allocation for popular items such as the 92mm Stowaway and 110GTX. The company also distributes third-party brands (Baader Planetarium, Kendrick Astro Instruments, Losmandy, Powerwerx, Berlebach, Starlight Instruments) through its storefront, and offers proprietary software (APCC-PRO and PEMPro) bundled with mounts.

Customer segments are horizontal: serious amateur astronomers form the primary persona, with professional astronomers/astrophotographers and astronomy clubs/educators as secondary segments. The company does no paid advertising, relying instead on organic SEO, a customer forum, a blog authored by principals, newsletter sign-ups, and presence at the Northeast Astronomy Forum (NEAF). International shipping is available with additional fees, but North America (USA) is the explicitly disclosed primary market.

Name

Astro-Physics

Legal name

Astro-Physics

Website

https://astro-physics.com

Company type

Private

Founded year

1969

Operating status

Operating

Headcount range

1–10 employees

Short description

Astro-Physics is a founder-owned US manufacturer of high-precision refractor telescopes, Maksutov-Cassegrain optics, and German Equatorial Mounts for serious amateur and professional astronomers, headquartered in Illinois since approximately 1969. Products are sold direct-to-consumer via e-commerce, with demand persistently exceeding production capacity.

Ownership category

akta.pro rank

Headquarters

HQ city

Machesney Park

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Operations, Personnel, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Astronomical Telescope Sales: One-time hardware sales of high-precision refracting telescopes, Maksutov-Cassegrain telescopes, and optical tube assemblies. Products range from portable travel scopes to large-aperture observatory-class instruments.
2. German Equatorial Mount Sales: Sale of GTO German Equatorial Mounts in various payload capacities (Mach2, 1150, 1600, 3600 series) with integrated servo control systems and optional absolute encoders.
3. Mount Accessories: Counterweights, mounting plates, dovetail saddles, piers, tripods, electronics, power supplies, and upgrade kits for existing mount systems.
4. Optical Accessories: Field flatteners, telecompressor correctors, camera adapters, Barlows, diagonals, finderscopes, dew removers, solar filters, and related imaging accessories.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Astro-Physics designs, manufactures, and sells high-precision refracting telescopes (StarFire CS and GTX series from 92mm to 190mm aperture), a 254mm Maksutov-Cassegrain telescope, and German Equatorial Mounts (Mach2, 1150, 1600GTO, 1100GTO series) with proprietary GTOCP4 servo control systems and optional absolute encoders. The company also provides APCC-PRO and PEMPro mount-control software, plus accessories including telecompressor correctors, field flatteners, dew management, power supplies, and piers, and distributes selected third-party brands such as Baader Planetarium, Kendrick Astro Instruments, Losmandy, Starlight Instruments, Powerwerx, and Berlebach.

Product overview

Astro-Physics is a manufacturer of high-end astronomical telescopes and German equatorial mounts. Their product portfolio centers on refractor telescopes (StarFire CS and GTX series ranging from 92mm to 190mm aperture) and Maksutov-Cassegrain optics, paired with precision German equatorial mounts (1600GTO, 1100GTO, Mach2GTO, 1150GTO) and comprehensive accessories including telecompressor correctors, field flatteners, dew management, power supplies, and mounting hardware. The company also distributes branded products from Baader Planetarium, Kendrick Astro Instruments, Losmandy, and Powerwerx. Software offerings include APCC-PRO and PEMPro for mount control and periodic error correction.

Differentiator

Problem solved

Functional benefit

Products and services

• 92mm f6.65 Stowaway Refractor Telescope Compact, airline-transportable 92mm triplet refractor telescope with 2.5-inch focuser, designed as a grab-and-go travel instrument and shipped with a Pelican Air carrying case. Targeted at serious amateur astronomers and astrophotographers who need a portable high-performance refractor.
• 110mm f6 StarFire GTX Refractor Telescope 110mm f/6 StarFire GTX portable refractor with Super-ED glass, 3.5-inch FeatherTouch focuser, dew shield, carrying case, field flattener, telecompressor corrector, and Herschel prism. Designed for airline transportability and convertible to fast f/5 imaging for dual visual and photographic use.
• 130mm f6.3 StarFire GTX "Gran Turismo" Refractor Telescope 130mm aperture triplet refractor with 3.5-inch rotating FeatherTouch focuser, airline-transportable design, and optional Tri-TCC telecompressor and 13035FF field flattener for converting to a fast imaging system. Targeted at serious amateur and professional astrophotographers.
• 155mm f/6 StarFire CS Refractor Telescope 155mm aperture f/6 StarFire Christen Superachromat refractor offering diffraction-limited performance with superior color correction, intended for deep-sky imaging and high-resolution visual astronomy.
• 190mm f/6 StarFire CS Refractor Telescope 190mm aperture f/6 StarFire Christen Superachromat refractor providing exceptional color correction and high-contrast imaging for both visual observation and astrophotography.
• 254mm f/14.5 Maksutov-Cassegrain Telescope 254mm (10-inch) Maksutov-Cassegrain telescope with a carbon fiber tube, fused silica quartz primary mirror, crown glass corrector, and zero-shift internal focuser, designed for high-contrast planetary and deep-sky imaging.
• 1600GTO German Equatorial Mount Premium heavy-duty German equatorial mount with 220 lb payload capacity, GTOCP4 servo control, Swiss DC servo motors, optional absolute encoders, auto-adjusting motor/gearboxes, and bundled APCC-PRO and PEMPro software. Targeted at serious amateur and professional astrophotographers.
• 1100GTO German Equatorial Mount Medium-capacity German equatorial mount with GTOCP4 control system and bundled APCC-PRO and PEMPro software, intended for serious amateur and professional imaging applications.
• 8" Tri-Pier Adjustable Folding Pier Portable 8-inch folding pier with adjustable height, providing professional-grade stability for field deployment of Astro-Physics mounts and telescopes.
• 10" Tri-Pier Adjustable Folding Pier Larger 10-inch diameter adjustable folding pier designed for heavier mount payloads, with expected availability Fall 2026.
• 6" Eagle Adjustable Folding Pier Compact 6-inch adjustable folding pier designed for smaller mounts and travel setups, providing stable support in portable configurations.
• RAPAS Right-Angle Polar Alignment Scope Right-angle polar alignment scope with LED illuminator for quick and accurate polar alignment of GTO German Equatorial Mounts in the field.
• GTOCP4 Servo Control Box Standalone upgrade servo control box for Astro-Physics GTO mounts (1100GTO, 1600GTO, Mach1GTO), providing Wi-Fi, ethernet, USB, and serial connectivity, safety slew logic, and firmware-update capability.
• APCC-PRO Software Astro-Physics Command Center Pro software providing advanced mount control including dual pointing model, tracking-rate correction, and safety features. Bundled with 1100GTO and 1600GTO German Equatorial Mounts.
• PEMPro Software Periodic Error Management Professional (PEMPro) Windows software for correcting mount periodic error, polar alignment, and backlash using a CCD camera. Bundled with 1600GTO German Equatorial Mounts.
• Kendrick Solar and Dew Control Products Distribution of Kendrick Astro Instruments products including Premier Dew Remover Heaters, DigiFire temperature-sensing controllers, AstroSolar Safety Filters, and Sun Finders for dew management and solar observation.
• Baader Planetarium Optical Accessories Distribution of Baader Planetarium solar filters, Vario-Finders, Cool-Ceramic Safety Herschel Prisms, Mark V Binocular Viewers, and related optical accessories designed to complement Astro-Physics telescopes.

Quantifiable outcome

• Color correction less than +/- 0.003% focus variation (92mm Stowaway, 656nm to 436nm)
• +4 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Three partnerships are on record, tiered core.

• Baader PlanetariumcoreTechnology or IntegrationBaader Planetarium products are sold through Astro-Physics distribution, including solar filters (AstroSolar Safety Film), Vario-Finders, Cool-Ceramic Safety Herschel Prisms, Mark V Binocular Viewers, and related accessories. Astro-Physics designs accessories specifically optimized for Baader products.
• Kendrick Astro InstrumentscoreTechnology or IntegrationKendrick dew removers, DigiFire controllers, and solar filters (DSF series) are distributed through Astro-Physics. Products include Premier Dew Remover Heaters in various sizes, temperature sensing controllers, and Kendrick Sun Finders.
• PowerwerxcoreTechnology or IntegrationPowerwerx power supplies, DC inline watt meters, power cables, and related electrical accessories are sold through Astro-Physics for telescope mount power requirements.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Emerging players

• 10Micron: 10Micron builds high-end Italian equatorial mounts (GM1000, GM2000) with absolute encoders and high payload capacity, competing for the observatory-class segment adjacent to Astro-Physics' 1600GTO.
• PlaneWave Instruments: PlaneWave manufactures CDK observatory-class telescopes and L-series direct-drive mounts aimed at professional and advanced amateur installations, the upper end of the market Astro-Physics 1600GTO/254 Mak-Cass occupies.

Direct peers

• TEC (Telescope Engineering Company): TEC manufactures premium apochromatic refractors (APO 140, 160, 180) hand-assembled in the US, competing directly with Astro-Physics StarFire CS series for high-end visual and imaging customers.
• Software Bisque: Software Bisque's Paramount mounts (MYT, MX+, ME II) compete head-to-head with Astro-Physics 1600GTO and Mach2GTO for robotic/astrophotography installations, bundled with TheSky software much as APCC-PRO is bundled with AP mounts.
• Takahashi: Takahashi builds high-end apochromatic refractors and equatorial mounts (e.g., EM-400, NJP) at premium price points, directly competing with Astro-Physics' StarFire optics and GTO mount lines.
• TeleVue Optics: TeleVue manufactures premium refractor telescopes (NP and ETHOS lines) and high-quality eyepieces targeting the same serious amateur astronomer and astrophotography segment that Astro-Physics serves.
• Stellarvue: Stellarvue produces premium triplet apochromatic refractors (SVX and Optimus lines) sold direct-to-consumer, overlapping with Astro-Physics' StarFire GTX and CS refractor lines in the same enthusiast channel.

Broad incumbents

• iOptron: iOptron offers a broad lineup of equatorial and alt-az mounts (CEM series, CEM70, iEQ45) at mid-tier price points, addressing the same mount market as AP but with more mass-market positioning and broader feature breadth.
• Meade Instruments: Meade manufactures a wide range of consumer and prosumer telescopes and mounts (LX-series, LX600), competing with AP at lower price points and serving overlapping astronomy end users.
• Celestron: Celestron is a mass-market incumbent in telescopes and mounts (CGX, CGEM, EdgeHD, RASA), serving a much broader and lower price tier than Astro-Physics but operating in the same astronomy category.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/AstroPhysicsCorp
• LinkedInlinkedin.com/company/astro-physics

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Astro-Physics