iOptron Photron RC10 OTA

The iOptron Photron RC10 is a Ritchey-Chrétien astrograph with a 250mm primary mirror and a 2000mm focal length.

iOptron's Ritchey-Chrétien telescopes have a much flatter field of view than other telescope designs, with zero coma and false color, making them particularly well-suited for astrophotography. The long focal length of iOptron RC telescopes is beneficial for imaging galaxies and planetary nebulae. Both mirrors are 99% reflective and are aluminized and quartz coated.

The telescope has a large 3.3" two-speed Crayford focuser. The primary mirror is permanently mounted, so there is no mirror flop that is common for many other Cassegrain telescope designs.

ASCOM-compatible iOptron focus motor for RC telescopes available separately.

Technical Specifications

• Optical design: Ritchey-Chretien
• Primary mirror diameter: 250mm
• Focal length: 2000mm
• Focal ratio f/8
• Resolution 0.46 arcseconds
• Limiting magnitude 14.7
• Practical maximum magnification 295x
• Secondary mirror diameter 110mm
• Focuser 3.3" 10:1 dual-speed Crayford
• Comes with 2 x 25 mm and 1 x 50 mm extension tubes
• Losmandy mounting rails above and below OTA
• Finder saddle
• Tube material: steel
• Tube weight: 15.9 kg