The Radian 61
Made for Astrophotographers, by Astrophotographers.
Introducing the Radian 61: a premium, travel-friendly APO triplet imaging refractor with all the bells & whistles included for the modern astrophotographer.
Available now in limited quantities!
- The ultimate portable astrophotography telescope.
- Comes with multiple upgraded components as standard for a complete, turnkey package
- 61mm aperture, 275mm focal length, f/4.5 system
- Premier apochromatic triplet optics for pristine image quality
- Custom Radian Hex Rings with integrated cable management channels
- Huge full frame image circle with the included Corrector for sharp stars across the image on DSLRs, mirrorless, and dedicated astronomy cameras
- Comes with a 4″ V-style dovetail & a Radian 6.5″ universal D-style plate to ensure compatibility with any mount out of the box
- Additional included accessories consist of a 10:1 factory-tuned rack & pinion focuser with optional automation upgrade, a 2″ Filter Vault, a 360º rotator, a Radian padded-insert travel backpack, dew shield, dust covers, and more!
MOUNTING & WEIGHT
- Forget having to haul your heavy equatorial mount far from home. At a total weight of just 4 lbs (1.8 kg), the Radian 61 can be carried on even the lightest travel mounts, including star trackers like the Sky-Watcher Star Adventurer Pro or the iOptron Skyguider Pro, with weight to spare for a camera as well.
- Factory-Tuned Focuser – We chose an exceedingly-sturdy 2.5″ dual-speed rack & pinion focuser for the Radian 61 that’s factory-tuned for extreme levels of precision when focusing.
- Automation – Upgrade to our USA-made custom Radian Autofocuser for perfect focus, all the time.
FAST f/4.5 FOCAL RATIO & SUPERIOR CORRECTION
- Tack-sharp, fast optics – Premier fast apochromatic triplet optics with matched reducer/flattener for pristine image quality from edge to edge — even with a full-frame camera.
- Filter Vault – Works with your standard 2″ filters, right out of the box. Completely integrated into the Radian 61’s included adapters. No backfocus headaches!
- Lightweight – light enough to use with a portable star tracker.
- Easy Frame Rotation – Frame your images to your ideal composition without having to rotate the entire telescope.
- Easy to attach any camera – industry-standard M48 threads, with full-frame sensors in mind.
- Two dovetails included – V and D style dovetails included, so you can use it on any mount.
Watch AstroBackyard’s Video on the Radian 61