Telescopes

Telescopes and Instruments "RiFast"

Will be updated shortly....With a jaw-dropping f/3.8 focal ratio, the RiFast are the ultimate telescopes for wide field astrophotography

The unique 3-lens field flattener allows wide flat focal planes, 80 mm or even more (!) in diameter. Two-stage light shield as standard on the secondary mirror.

Overview "RiFast" SERIE

A big, beautiful telescope at f/3.8. What else to say?

Devoted to astrophotograpy, the RiFast family has an unique optical scheme, proprietary of Officina Stellare, another creation of our master optician, Massimo Riccardi. The tree-lens field flattener is the real masterpiece of this telescope. The primary mirror is aspherical and the secondary mirror is spherical. A precise design choice to make collimation easier.

Diffraction-limited over a wide and flat field, the RiFast design will push any camera to its limits… and will do it FAST! The extraordinary f/ ratio allows a higher productivity per night, a significant factor for surveys, SN search, asteroid control, and many other fields of modern astronomy.

The central obstruction is about 50%, but still smaller than similar designs, that simply can’t compete under any point of view. The visual contrast is very good, thanks also to the special ultra-dark paints we use.

The corrector group is very close to the focal plane, so chromatic aberration is undetectable.

All telescopes share the following mechanical characteristics:

• Two (optionally four) Losmandy or 8″ dovetail plates, to connect the telescope to your mount, or to accommodate accessories.
• Computer optimized baffles.
• Focal plane tilt adjusting.
• Optional shutter to protect the primary mirror.
• High precision spherical joint and high strength carbon tubes in the truss structure for zero-backlash assembly and extraordinary rigidity.
• Double concentric light shield for the secondary mirror/spider support.
• Radial micrometric adjustment for the secondary mirror support.
• All collimation screws are spring-loaded, with lock if needed.
• Zero image shift secondary mirror movement, with electronic/PC control (optional on smaller telescopes, standard in the big ones).
• Special ultra-dark and ultra-opaque space-grade paint for all sensible parts. Space grade glue for glued parts. Space-grade rubber for all seals.
• Unique mirror supports design.
• Wide choice of focusers, filter wheels, and optical train accessories in general.
• Customization available.

RiFast 300

RiFast 400

RiFast 500

RiFast 600

RiFast 700

RiFast 800

Telescopes and Instruments "RiDK​"

The "universal" telescope. With a balanced f/7 focal ratio and the 2-lens field flattener

it offers a good compromise between obstruction and focal ratio. Two-stage light shield as standard on the secondary mirror, allows lower obstruction for the same focal plane illumination. Reducer available for f/5 operation.

Overview "RiDK​" SERIE

An evolution of the Dall-Kirkham design, the RiDK is probably the most “universal” family in our catalog, and the most affordable. With a f/7 native focal ratio, the RiDK (Riccardi Dall-Kirkham) represents the new reference point for all modified Dall-Kirkham instruments available on the market.

The unique experience and creativity of Massimo Riccardi, Chief Optical Designer at Officina Stellare, created this new family of telescopes. with superior performance and image quality.

The results are simply amazing: a telescope that offers a wide, flat focal plane (more than 65 mm in diameter, even in the smallest model!). A wide focal plane that is diffraction limited over a wide spectral range.

Since the corrector group is close to the focal plane, chromatic aberration is undetectable.

Specification

STANDARD CONFIGURATION:

Low expansion glass optical set, carbon/aluminum truss tube design, splitted light baffle, four support dovetails, three ventilation fans and mirrors heaters with manual control, shroud and cap covers. Primary cell detachable for an easy cleaning of mirror.

AVAILABLE IN FULL CARBON, ATHERMIC LIGHTWEIGHT TRUSS TUBE. Optional accessories: 0.75x reducer, digital or manual back plate focusers (only for 400mm), rotators, secondary mirror focuser (from 500mm), mirror shutters, OS Bus advanced electronic, customized imaging train parts and more. Available also with Officina Stellare mount.

All telescopes share the following mechanical characteristics:

• Two (optionally four) Losmandy or 8″ dovetail plates, to connect the telescope to your mount, or to accommodate accessories.
• Computer optimized baffles.
• Focal plane tilt adjusting.
• Optional shutter to protect the primary mirror.
• High precision spherical joint and high strength carbon tubes in the truss structure for zero-backlash assembly and extraordinary rigidity.
• Double concentric light shield for the secondary mirror/spider support.
• Radial micrometric adjustment for the secondary mirror support.
• All collimation screws are spring-loaded, with lock if needed.
• Zero image shift secondary mirror movement, with electronic/PC control (optional on smaller telescopes, standard in the big ones).
• Special ultra-dark and ultra-opaque space-grade paint for all sensible parts. Space grade glue for glued parts. Space-grade rubber for all seals.
• Unique mirror supports design.
• Wide choice of focusers, filter wheels, and optical train accessories in general.
• Customization available.

RiDK 400

RiDK 500

RiDK 600

RiDK 700

RiDK 800

Telescopes and Instruments "RH Veloce"

"Veloce", in Italian, means fast.

We choose this name because no other design allows such fast f/ ratios with a so high definition over a wide and flat focal plane. Any Veloce offers pinpoint stars all over the field of view. To put is simply, the best astrograph you can buy.

Overview "RH Veloce" SERIE

The RHVeloce is a really unique design, and uses several unique solutions, created by Riccardi and Honders (from this the “RH” in the name). The RH Veloce uses a double front lens that is weakly convergent, and the primary mirror is a “Mangin” mirror (from the name of its French inventor). A Mangin mirror is a mirror that is coated on the back surface, not on the front. The light passes through the glass, is reflected by the coating and then passes again through the glass. For this reason, a Mangin mirror is called a refractive-reflective optical element, and opens exciting possibilities to optical engineers. This complex design includes also a corrector group before the focal plane, achieving performances impossible otherwise, with extraordinary “fast” photographic performances over wide focal planes.

A curiosity about the RH Veloce: since the double frontal lens is convergent, the Mangin mirror is smaller than the “nominal” diameter of the scope, while the meniscus itself is bigger than the nominal diameter, to ensure a good illumination over the wide field of view of such scopes. For example, the 200 mm model has a 220 mm meniscus and a 190 mm primary mirror. The secondary mirror is a separated piece of glass, or it is made coating the middle of the meniscus, depending on model.

For this reason, we talk about “entry pupil” and not “primary mirror diameter”, for this instruments.

The original RH Veloce series was only three models (200, 300, 350mm). The 250 model was designed for a specific application, but we were so happy about it to put it in production. It is f/5.6, not f/3.

The RH Veloce frontal lens is the only piece of optic in our production that we outsource. It is made in Germany under Officina Stellare specifications.

All telescopes share the following mechanical characteristics:

• Two (optionally four) Losmandy or 8″ dovetail plates, to connect the telescope to your mount, or to accommodate accessories.
• Computer optimized baffles.
• Focal plane tilt adjusting.
• Optional shutter to protect the primary mirror.
• High precision spherical joint and high strength carbon tubes in the truss structure for zero-backlash assembly and extraordinary rigidity.
• Double concentric light shield for the secondary mirror/spider support.
• Radial micrometric adjustment for the secondary mirror support.
• All collimation screws are spring-loaded, with lock if needed.
• Zero image shift secondary mirror movement, with electronic/PC control (optional on smaller telescopes, standard in the big ones).
• Special ultra-dark and ultra-opaque space-grade paint for all sensible parts. Space grade glue for glued parts. Space-grade rubber for all seals.
• Unique mirror supports design.
• Wide choice of focusers, filter wheels, and optical train accessories in general.
• Customization available.

RH200 AT

RH200 MKII AT

RH250

RH300 AT

RH320 AT

RH350 AT

v. Bios Series

Will be updated shortly....