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  • WEB230 parabolic antenna WEB230 parabolic antenna

WEB230 parabolic antenna

Product code: WEB230

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Quick Overview

Radio telescopes capture radio signal coming from space which are, in many cases, very weak. This is why radio astronomers use very large diameter parabolic antennas, even more than 50 meters in diameter. How can an amateur own and operate a parabolic antenna that is powerful, compact, lightweight and yet not too expensive? The WEB230 parabolic antenna is the ideal solution to install a parabolic antenna on an equatorial mount (with Losmandy plate and with a load capacity of at least 25 Kg) to capture radio waves. The plate is the same as used by many telescopes, so you can use it just like a normal optical tube. The WEB230 can be installed on many different mounts (has already been tested on EQ6, AZ-EQ6, Atlas EQ-G and G53f).

Availability: In stock

€3,690.00
VAT 22% incl.
if you pay by bank transfer €3,579.30

Details

NOTE: Delivery time is about 5-10 days from the order date. In fact we pre-install and test all components of the WE230 parabolic antenna before delivery.

Receiving radio waves from space is a difficult task that requires the use of instruments specially designed for the amateur radio astronomer: so we designed the WEB230 parabolic antenna. It was specifically designed to create an amateur radio telescope with a German equatorial mount, just like the ones used for normal optical telescopes.

 

Large 2,3 meter diameter parabolic antenna

Radio astronomy studies signals that, in most cases, are very weak. So when you are studying frequencies higher than 1 GHz, it is necessary to use a parabolic antenna with a diameter as large as possible.


The WEB230 parabolic antenna features a large diameter so it has high gain (about 43 dB @ 11GHz) and high resolution (HPBW about 0.8 ° @ 11GHz). In this way you can capture weaker radio signals and separate finer details.

Mesh construction - incredibly light

In order to allow installation and proper operation of a parabolic antenna on a not-too-expensive equatorial mount (like the EQ6), the main reflector must weigh no more than 12 kg, while the total weight of the antenna (with counterweights and supports) must not exceed 25 kg. The main reflector of the WEB230 antenna weighs only 10 kg so you can install it on an equatorial mount with a load capacity of at least 25 kg (with Losmandy dovetail).


The perforated surface also results in a low reflection of visible and infrared waves (ie, when the radio telescope points at the Sun, the illuminator and the LNB do not heat up too much) and a lower wind effect.

Hand-installed 2x2 mm aluminium mesh

The reflecting surface of this parabolic antenna (primary reflector) is composed of an aluminum mesh with 2x2mm square mesh size for optimum reflectivity of radio waves with frequencies up to 12 GHz. The mesh is positioned and installed by hand by our technicians in order to obtain a parabolic surface as accurately as possible (within the limits of mechanical support). The result is a superior quality mesh parabolic antenna which offers a higher gain and a more precise parabolic shape.

Comparing a radio image of the Sun taken at low resolution (using the same receiver, LNB, feeder and mount) using a 230cm diameter commercial mesh parabolic antenna (left) and our WEB230 model (right), we clearly note that with the first, the Sun is deformed due to the non-optimal parabolic shape.

 

Support for Ku-band feeder and focus system

In order to study the weak radio astronomical signals, it is necessary to optimize the antenna by adjusting precisely also the focus point. For this reason 4 aluminum rods rigidly maintain feeder and LNB support (LNB illuminator and not included in the WEB230 price). An appropriately-sized inner sleeve allows you to fine tune the focus of the system in order to maximize the gain.

A special box insulates the LNB to minimize gain variations.

Support device for equatorial mounts

Our support device for equatorial mounts (patent pending) allows you to install the WEB230 parabolic antenna on any equatorial mount (with Losmandy dovetail and load capacity of at least 25 kg, eg. EQ6 type). Thanks to a sliding system with two counterweights and protection against accidental blows, you can obtain perfect balance even in the declination axis for maximum tracking and automatic GOTO performances of the mount. Without counterweights the radio telescope would be completely biased towards the front (because of the weight of the primary reflector and LNB + illuminator group with support rods) and therefore could not properly point and track objects in the sky.

A special system of rear tie rods increases the rigidity of the structure while minimizing the deformation of such a large-diameter parabolic antenna.

Fast and secure shipping with UPS 

Do you want to buy the parabolic antenna but you cannot visit us in our laboratory in Pordenone or you do not have large enough transport available? No problem! We designed the WEB230 to be easily transported and can be divided into 2 sturdy boxes: in this way we can ship it via UPS. Each carton box is composed of a thick outer carton and several internal carton boxes which separate various internal components. The instruments are well protected for a prompt and secure shipment.

All the elements that make up the instrument are pre-installed so you just have to follow the instructions to install it quickly and get started right away!

 

Why not use a full dish parabolic antenna?

Full dish parabolic antennas ensure, with same diameter as a mesh model, a higher gain so, in theory, they would be the ideal choice, but they are also much heavier (a full 1.5-meter diameter aluminum parabolic antenna weighs no less than 20 Kg, much more than the primary reflector of our mesh parabolic antenna which weighs only 10 kg). So, on the same mount (eg an EQ6), you can install our WEB230 2.3 meter parabolic antenna or a full dish smaller than 1.2 - 1.4 meters in diameter. What does this mean?

1) Our parabolic antenna gain is slightly higher so it gives a better ‘sensitivity’ to the whole system

2) Our parabolic antenna has a greater diameter and so a better resolution capability: it allows you to record finer details

3) The full parabolic antenna also reflects infrared which heats LNB (so placed on the focal point) and therefore increases electronic noise. Our mesh parabolic antenna does not reflect infrared so it does not heat the LNB.

Technical Specifications

Antenna diameter (m) 2,3
Material Aluminium
Antenna type Prime focus
Plate Losmandy
Reflector material Mesh
Working frequency (GHz) 1 - 12
Counterweights 2 x 5 Kg
Front support shafts number 4
Rear shaft number 3
Ku band illuminator support Yes
Certification No

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