Officina Stellare RIDK 330 RIDK330SGC

OPTICAL TELESCOPE ASSEMBLY

Clear diameter

330 mm

Focal length

2310 mm, f/7

Optical scheme

Officina Stellare RiDK Optical Telescope

Officina Stellare design. M1 is aspheric, 2-lens corrector.

Mirrors

Low expansion borosilicate glass (Ohara)

Mirror coating

M1 and M2 protected aluminium

Lenses coating

Multilayer VIS anti-reflection coating, 400 to 900 nm bandpass.

Corrected field

52 mm, 28% vignetted

40mm with optional 0.75x reducer, 30% vignetted

Plate Scale

1.07 arcsec/pixel on 1680x class chip (9 micron pixels)

Field of view 54.6 x 54.6 arc/sec on class 1680X chip

Plate Scale with reducer (optional)

0.8 arcsec/pixel on 1680x class chip (9 micron pixels)

Field of view 73 x 73 arc/sec on class 1680X chip

WFE

Better than 30nm

Spot size

A graph can be supplied

Relative illumination

A graph can be supplied

Mechanical characteristics of the optical tube:

Closed carbon aluminum design. Lightweight and near full athermal.

Multipoint, FEA and thermal optimized M1 and M2 cell.

Weight 22 Kgs

Dimensions 841mm x 424mm

Computer optimized M1 and M2 baffles.

Ultra stable M1 and M2 cell

Special ultra-black antireflective paint on all the internal surfaces.

Mechanical tip-tilt fine correction flange for the focal plane instrumentation.

Speed fans on primary mirror.

One Losmandy style dovetail to connect telescope to mount (second is optional)

Special custom adaptors to focal plane instrumentation optional upon request.