RC20 - Telescope iOptron - Free user manual and instructions
Find the device manual for free RC20 iOptron in PDF.
Pick your language and provide your email: we'll send you a specifically translated version.
| Product Type | Telescope |
| Brand | iOptron |
| Model | RC20 |
| Optical Design | Ritchey-Chrétien |
| Aperture | 200 mm (8 in) |
| Focal Length | 1600 mm |
| Focal Ratio | f/8 |
| Weight | 12 kg (26.5 lbs) |
| Tube Length | 610 mm (24 in) |
| Tube Outer Diameter | 230 mm (9.1 in) |
| Focuser Type | 2-inch dual-speed Crayford |
| Primary Mirror Material | Low-expansion glass with enhanced coatings |
| Secondary Mirror Material | Fine-annealed glass with enhanced coatings |
| Back Focus | 100 mm from standard focuser position |
| Mount Compatibility | Requires equatorial mount capable of 15 kg payload |
| Primary Function | Astrophotography and visual observation |
| Maintenance | Clean optics with compressed air and lens cleaner only when necessary |
| Safety | Never point at the sun; use solar filter only if properly rated |
| Spare Parts | Available from iOptron: mirrors, focusers, and dust covers |
| Repairability | Repairs by iOptron authorized service centers |
Frequently Asked Questions - RC20 iOptron
What is the optical design of the iOptron RC20?
The iOptron RC20 uses a Ritchey-Chrétien design, which provides coma-free images for astrophotography.
What is the aperture and focal ratio?
The aperture is 200 mm (8 inches) and the focal ratio is f/8, resulting in a focal length of 1600 mm.
How do I collimate the RC20?
Collimation is done by adjusting the primary and secondary mirror screws. Use a collimation tool or star test for precision. Refer to the manual for detailed steps.
Can I use the RC20 for visual observation?
Yes, it works well for visual observation with appropriate eyepieces, but its design is optimized for astrophotography.
What accessories are included with the RC20?
Typically, the RC20 is sold as an optical tube assembly, so it includes the tube, focuser, and dust covers. Mount, eyepieces, and finder are sold separately.
How do I clean the optics?
Use compressed air to remove dust, then apply lens cleaning solution to a microfiber cloth for stubborn spots. Avoid touching the mirrors.
What mount is recommended for the RC20?
A mount with a payload capacity of 15 kg (33 lbs) or more is recommended, such as the iOptron CEM40 or similar equatorial mounts.
How much does the RC20 weigh?
The RC20 optical tube weighs approximately 12 kg (26.5 lbs).
Can I attach a DSLR camera directly?
Yes, using a T-ring and adapter for your camera's lens mount. The focuser has a 2-inch barrel, so you may need a 2-inch to T2 adapter.
How do I prevent dew on the optics?
Use a dew heater for the front corrector plate or primary mirror, and a dew shield. The RC20 has an integrated dew shield, but active heating is recommended in humid conditions.
User questions about RC20 iOptron
0 question about this device. Answer the ones you know or ask your own.
Ask a new question about this device
No questions yet. Be the first to ask one.
Download the instructions for your Telescope in PDF format for free! Find your manual RC20 - iOptron and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. RC20 by iOptron.
USER MANUAL RC20 iOptron
Manual assistant
Powered by Anthropic
Waiting for your message
Product information
Brand : iOptron
Model : RC20
Category : Telescope