The Radian Raptor 61 refractor is a very portable, widefield f/4.5 apochromatic triplet. This is the first telescope offering from Radian Telescopes which is a new company founded by OPT to create products for astrophotographers. In the video below I take a quick look at the telescope itself, install the optional electronic focuser and talk about the back focus requirement.

I’ll be discussing this telescope more in the future as I have an opportunity to image with it. So far I’m impressed with its overall design, construction and appearance. The scope features an apochromatic triplet optical design with premium glass and multi-coatings. More specifications are listed below…

The Radian Raptor 61 features and specifications include:

– Aperture: 61mm

– Case Style: Radian Padded Insert Backpack

– Corrector: Integrated Corrector with three element design

– Dew Shield: Included

– Dust Covers: Both front and rear covers included

– Filter Attachment: 2″ / M48 Filter Vault

– Focal Length: 275mm

– Focal Ratio: f/4.5

– Focus Knobs: 10:1 Dual Speed with locking knob

– Focuser Design: Non Helical Rack & Pinion

– Image Circle: 44mm

– Included Dovetails: 6.5″ universal Losmandy D Style and 4″ Vixen V Style

– Optical Design: Apochromatic Triplet Refractor

– Optical Design: Petzval Refractor

– OTA Length (Dew Shield Retracted): 235mm

– OTA Outer Diameter w/o Hex Rings: 80mm

– OTA Outer Diameter: 90mm with dew shield

– Rear Camera Connection: M48x0.75 (wide T-Ring compatible)

– Recommended Back Focus: 55mm (can be reached with included adapters)

– Rotator: 360 degree with locking knob

– Tube Rings: Radian Modular Hex Rings

– Weight: 4 lbs.

The Radian Raptor 61 Triplet Refractor

Quantities are limited on this popular telescope. Order now and don't be disappointed!

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