Astronomy Specialist

SHARPSTAR SCA310 SUPER CASSEGRAIN ASTROGRAPH F/3.8

$10,999.00 AUD
SKU: SS-310CDK

Sharpstar

Corrected Cassegrain astrograph

310 mm

f/3.8

1178 mm

23 kg


 

The Sharpstar SCA310 is an Aspherical Cassegrain astrograph with an ultra-fast focal ratio of f/3.8 and a focal length of 1178mm.

This telescope features a 310mm aspherical primary mirror made of PZ33 borosilicate glass with a similar low expansion coefficient of the Pyrex. The enhanced aluminium mirror coating ensures a reflectivity of over 95%. The secondary mirror has a new lever adjustment function that can be moved in a horizontal position.

The optical path includes a triplet air-spaced 3.5" field flattener with a large 60mm image circle, making it suitable for medium format sensors. The heavy duty rack & pinion 3.5" focuser ensures smooth operation without slipping and the high capacity for accessories. The focuser is compatible with the ZWO EAF electronic focuser bracket.

The two M54×0.75 threads and M48×0.75 threads at the rear of the focuser can meet different needs, are convenient to connect to most commercially available imaging-terminal and achieve perfect focus. The optical tube is made of carbon fiber with CNC-machined aluminium parts for enhanced structural rigidity and durability, and features three cooling fans at the rear.

 

Optical design

Aspherical Cassegrain reflector

Primary mirror diameter

310 mm

Focal length

1178 mm

Focal ratio

f/3.8

Secondary mirror 

Spherical, 180 mm (minor axis)

Corrector rear group

Triplet air-spaced

Image circle

60 mm

Focuser

Rack & pinion, dual speed (10:1) 3.5" diameter

Resolving power

0.37 arc second

Camera connection

TBD

Corrector distance

TBD

Tube weight

23 kg

Tube length

720 mm

Tube diameter

400 mm

Tube material

Carbon fiber

SKU

SS-310CDK

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SHARPSTAR SCA310 SUPER CASSEGRAIN ASTROGRAPH F/3.8.

SHARPSTAR SCA310 SUPER CASSEGRAIN ASTROGRAPH F/3.8

$10,999.00 AUD

Optical design

Corrected Cassegrain astrograph

Image circle

Focal ratio

f/3.8

Aperture

310 mm

Focal length

1178 mm

Optical thickness

Threads

Cooled

Colour or Mono

Pixel size

Sensor dimensions

Resolution

Sensor diagonal

Quantum efficiency

Read noise

Fullwell capacity

Bit depth

FPS

Camera backfocus

Filter size

Filter size

Bandpass (FWHM)

Bandpass (FWHM)

Glass thickness

Mount type

Payload capacity

Latitude range

Dovetail saddle

Slew speed

Encoders

Periodic error correction

Counterweight shaft

Azimuth adjustment range

Internal diameter

Illuminated diameter

Compatible telescope external diameter

Weight

23 kg

Length

Width

Height

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