Shopping cart
is empty

Posts Tagged 'celestron'

Celestron RASA Astrographs: Telescopes for Astrophotography

September 20 2019, Stefan Taube

The RASA range of telescopes were developed specifically and exclusively for astrophotography. They are very fast; with a focal length of f/2 they take pictures twenty times faster than a Schmidt-Cassegrain lens at f/10! Because of this a tracking control is not required, and generally fewer demands are placed on the mount!

The RASA 1100 model with a 279 millimetre aperture has already been on the market for some time, and Celestron is now also offering a smaller version, the RASA 800, with a 203 millimetre aperture.

Celestron Astrograph S 203/400 RASA 800

Celestron Astrograph S 203/400 RASA 800

This optical system is also within reach of smaller budgets with the RASA 800, particularly since it can be used with a smaller mount. The illustration above shows the RASA 800 with the AVX mount. This astrograph is optimised for astrophotography cameras with a 22 millimetre field diagonal. The larger RASA 1100 is the better choice for those who prefer to use a DLSR for their photography.

The abbreviation RASA stands for the developers’ names: Rowe-Ackermann-Schmidt-Astrograph. It is basically a normal, routinely-produced Celestron Schmidt-Cassegrain instrument; that is with a spherical primary mirror in front of which is a corrector plate invented by Bernhard Schmidt. Instead of using a secondary mirror to direct the light path towards the Cassegrain focus at the end of the telescope, the camera sensor is incorporated in the prime focus. A corrector assembly comprising four lenses made of especially high-quality glass ensures optimal illumination.

Die RASA-Optik von Celestron

The RASA telescope from Celestron

As the term astrograph implies, RASA telescopes are designed exclusively for photography. There is no option to use an eyepiece. But if you are an amateur astronomer who specialises in astrophotography, you will not see this as a disadvantage, instead you will quickly learn to appreciate the advantages of the RASA telescopes.

PlaneWave Instruments software for computer control of Celestron telescopes

June 26 2019, Stefan Taube

You can rely on PlaneWave Instruments’ professional CPWI software if you want to control your Celestron telescope via a laptop or PC.

This software is not only intuitive to use, but also lets you maximise the GoTo accuracy of your Celestron mount.

CPWI Telescope Control software is now compatible with all modern Celestron mounts, including:

 

You can download the software for free here on celestron.com!

 

Celestron CPWI

PlaneWave Instruments Telescope Control panel

 

Some special features of CPWI software include:

  • The built-in SkyViewer star chart is intuitive to use and allows you to easily navigate through the night sky by clicking and zooming.
  • Advanced PointXP lets you create a highly accurate model of the night sky which uses more than 100 reference points to enable highly accurate positioning and tracking.
  • Ideal for observatories: You can carry out alignment directly from the PC, save the alignment model and simply upload it again the next night you observe. Alignment can also be done entirely automatically using the optional StarSense module.
  • Extensive internal database. Access to the SIMBAD professional astronomy database possible via the Internet.
  • Worm screw periodic error compensation: PEC can be done from the PC via CPWI.

System requirements: Windows 7, 8 or 10 operating system, with USB 2.0 or 3.0 connection, 15MB hard disk space and 64MB RAM. Screen resolution of 1024×768 or higher is recommended.

New focus motor for Celestron telescopes (1 Comment)

February 26 2019, Stefan Taube

When it comes to astrophotography, the right focus is the most important thing. Even the best optics only deliver sharp images if the focus is spot on. A motorized focus has two advantages over manual focusing: it is vibration-free and very precise. If you remotely control your telescope via your PC, you definitely need motorization.

For the very popular SC telescopes of the Celestron brand, numerous solutions from different suppliers have been available. Celestron now offers its own model, the focus motor for SC and EdgeHD optics.

Celestron Fokussiermotor für SC- und EdgeHD-Optiken

Celestron focus motor for SC and EdgeHD optics.

The motor fits all SC, EdgeHD and RASA optics, as well as the two new Maksutovs with CGEM-II and CGX mounts. Exceptions are optics built before 2006 and the 9.25″ EdgeHD. An additional adapter is required for the RASA 1100, as the RASA 1100 is already supplied with a FeatherTouch micro-focus. The adapter requires you to dismantle the focuser partially to fit the motor.

If you are using a Celestron mount, power is simply supplied via the mount’s AUX port. A cable for this is included in the scope of delivery. If all AUX ports on your mount are already occupied, simply use the Celestron Aux Port Splitter.

The motor can be controlled in three ways:

  • With the NexStar+ controller: Simply press the MENU button, select Focuser and you can use the two arrow keys to control the motor and adjust its speed. Version 5.30+ of the installed firmware is required. You can update your Nexstar control via the Internet at any time. The controller is not only suitable for visual observation, but also for astrophotography with a DSLR, i.e. without a laptop.
  • With a laptop or PC: If you operate your telescope remotely or have connected an astrophotography camera, it is best to use the free program Celestron Focuser Utility for Windows. For this purpose, you need to connect the NexStar hand controller to the computer via USB, not the focus motor itself. The new CGX and CGX-L mounts can be controlled with the Celestron PWI software. The focuser can also be addressed via this program. The CGX and CGX-L mounts can be connected directly to the laptop or PC via USB without manual control.
  • Without a Celestron mount: If you have a Celestron optic mounted on another brand’s mount, you can control the focus motor via the USB port. The USB port should supply 900mA. As an alternative to the USB power supply, you can also operate the focus motor via main power or a Powertank. However, a power supply unit or power cable is not included in the scope of delivery.

The Celestron focus motor for SC and EdgeHD optics is a really useful accessory that is easy to adapt and operate.

New: Celestron Powertank Lithium Pro

November 29 2018, Stefan Taube

 The Celestron Lithium Powertank has quickly proven itself and is already used as a power supply for countless astronomical telescopes. Celestron has now also packed two LiFePO4 elements into one battery to give twice the power with its Lithium Pro Powertank!

Celestron Lithium Pro 1

Some special features:

  • Up to 17 hours of power for your telescope!
  • Multiple devices can be powered simultaneously.
  • Socket for vehicle power plug (cigarette lighter cable). This cable is included with most telescopic mounts as an accessory.
  • High shelf life – unlike other power tanks, this battery does not need to be used regularly in order to maintain its performance.
  • Long operating life – up to 2,000 charging cycles, which only take about 3 hours.

Like its little brother, the larger Powertank also employs Celestron’s well thought-out design – it can be attached to the tripod with the loop and Velcro fastener provided. The torch has a red light function and the lid with the connections can be closed to protect against dust and moisture.

Celestron Lithium Pro 3

Thanks to its cigarette lighter connection, the Lithium Pro Powertank can be used with almost any mount. A powerful portable power supply such as this is highly recommended for slightly larger mounts, such as the Celestron CGX or the Skywatcher EQ6-R.

Celestron Lithium Pro 2

New Smartphone Mount by Celestron: NexYZ

August 28 2018, Stefan Taube

The trend of using smartphone cameras for photography with optical instruments has remained steady. This is, of course, an obvious choice because everyone has this camera with them, ready to send pictures; and these cameras are always improving. The large range of smartphone mounts  has been extended by Celestron, adding a very interesting model.

NexXY

The  Celestron NexYZ is not only particularly robust; it can be adjusted in all three axes using a rotary knob. This means you’ll be able to set the perfect distance between the eyepiece and the adapter. This feature, in combination with the ease, with which the smartphone can be changed, is interesting for public shots at observatories, because all visitors want to take their personal moon photo home with them.

NexYZ-1

The clamp of the NexYZ adapter is also wonderfully suited for use on spotting scopes.

NexYZ-2

With the NexYZ adapter, we are offering you a smartphone holder with the usual clever design by Celestron.

Compact and smart: The new mount AZ-GTi from Skywatcher

October 20 2017, Stefan Taube

Astronomy with a smartphone:

It all began with telescopes of the series Nexstar Evolution: Celestron equipped this series with WIFI, so that they can be controlled via mobile units by using the SkyPortal app.

The graphic user interface offers many possibilities and can be intuitively controlled. The omission of a hand controller is another benefit of controlling the system via an app. This way one needs only a limited amount of equipment.

Now available: The new AZ-GTi from Skywatcher:

The mount AZ-GTi GoTo WiFi from Skywatcher is completely new. It carries telescopes with a weight of up to 5 kilogrammes, which can be directed to almost 10,000 sky objects via a smartphone using the SynScan app.

AZ-GTi

With this GoTo control even beginners will easily find their way around the sky. The mount not only swings the telescope to the desired object, but also keeps on tracking, keeping the object in the eyepiece, despite the earth’s rotation.

The mount AZ-GTi is an azimuthal mount, which, in contrast to an equatorial mounting does not permit astrophotography with longer exposure times. However, azimuthal mounts are smaller, lighter and ready more quickly for use than equatorial mounts.

Skywatcher AZ-GTi telescopes:

Skywatcher currently offers the AZ-GTi in three sets. The most inexpensive set is the Explorer-130PS AZ-GTi. Here you can obtain the mount with a Newton telescope and an aperture of 130 millimetres. The combination is not only more reasonable in price, but also has the biggest mirror optics and thus the highest light gathering capacity.

The combination with the 127mm Maksutov is also very interesting: SkyMax-127 AZ-GTi GoTo WiFi. Despite its high focal length, the Maksutov still has a short tube and, as a closed system, is almost indestructible.

An app for the mobile unit offers more possibilities than a hand controller, and the smartphone is always close at hand. Controlling the system via smartphone makes sense especially for small mounts.

Useful helpers: StarSense AutoAlign for Skywatcher mounts

September 22 2017, Stefan Taube

People who already have a Celestron mount know about the StarSense AutoAlign module for the automatic alignment of the mount. However, Celestron also offers this technology for Skywatcher mounts: The Celestron StarSense AutoAlign module for Skywatcher.

StarSense AutoAlign Modul

Why is this accessory useful?

Mounts with integrated computer control (“GoTo”) enable the search for sky objects from a database, simply by pressing a button. For this to work correctly, the computer needs some information, like date, time, observation location and alignment of the telescope right at the beginning. You can only use the GoTo control, after having completed the alignment procedure. The StarSense AutoAlign module is a convenient helper who will do most of the work involved.

For this purpose, the module is mounted to the optical tube and not to the finder scope. An integrated camera scans the night sky and runs the alignment automatically. If you are using an azimuthal mount with GPS (e.g. a Celestron CPC) the initialisation and alignment of the telescope will run fully automatically. You only need to switch the telescope on, and wait for approx. three minutes, until it is ready for star gazing!

When using an equatorial mount, you must also align the polar axis with the polar star. Also in this case, the StarSense AutoAlign module will help you: The hand controller of the module will assist you in the polar alignment, so that you don’t need a pole finder. Once the polar axis has been aligned, any further alignment will be automatically performed by the camera, just as with an azimuthal mount.

Use the possibilities of the StarSense AutoAlign for Skywatcher or Celestron for even more fun with your hobby!

Summer campaign: Celestron CGE Pro telescopes for particularly reasonable prices!

September 8 2017, Stefan Taube

Now is a good time to get prepared for the dark season: Celestron CGE Pro telescopes are now available with 20% discount!

CGEPro1400The CGE Pro is the most powerful mount from Celestron. It is able to carry the large 14-inch Schmidt-Cassegrain optics or the RASA astrograph without any strain. However, with its sturdy tripod, this mount is still suitable for mobile use.

Choose your CGE Pro telescope:

You already have a large telescope? No problem, we currently also offer the CGE Pro mount without optics for a very favourable price!

This offer ends on the 30th of September 2017. Order now!

CGX-L: The Large Version of the New Celestron Mount

June 12 2017, Stefan Taube

At the beginning of February, we introduced the latest development from Celestron: Celestron CGX. The CGX now has a big sister. The brand-new  CGX-L mount is able to carry 34 kilogrammes and thus almost 10 kilogrammes more than the CGX.

The large 14 inch optics can thus also be used with the new technology of the CGX-mounts:

CGX-L-1400

The generously sized 144 millimetre worm gears are an important factor in increasing the load bearing capacity. They enable smooth running, even when carrying heavy telescopes. Apart from this, the dovetail clamps were extended to 270 millimetres, so that large telescopes are also securely held in place.

The illustration shows the mount head with the large worm gear and the toothed belt drive:

CGX-L-Antrieb

Another positive aspect: Additional AUX ports and the autoguider connection on the DEC-axis ensure a better cable management.

If you intend to use large optics with photo equipment, you need a heavy counter weight. With 31.5 millimetres in diameter, the counterweight shaft has been adequately dimensioned for carrying heavy loads.

Despite the increased load bearing capacity, the CGX-L is still portable. And not only the mount is able to carry higher loads: Celestron delivers the CGX-L with a steel tripod which has been considerably reinforced compared to the CGX. The tripod legs have a diameter of 70 millimetres!

The CGX-L is a universally usable mount, with hardly any limits: You may use it stationary in your garden observatory or transport it to telescope meetings or to your favourite observation location.

We offer the mounts CGX and CGX-L individually. With the dual saddle plate, you can combine these mounts with almost any optics system. But you can also decide on a complete telescope system consisting of mount and Schmidt-Cassegrain optics. You will find these product series under the two links CGX- telescopes and CGX-L telescopes.

No matter whether you decide for the CGX or directly for the larger sister CGX-L, you will receive a modern mount, which will set the standard for the next few years.

Now available: the new CGEM II mount from Celestron

May 17 2017, Stefan Taube

The American telescope manufacturer Celestron has revised their work horse for astrophotographers. The CGEM II is very popular, and rightly so, because when it comes to load bearing capacity it has a lot of reserves as compared to the smaller Advanced VX mount; but it is cheaper than the big CGX. In the field of equatorial GoTo mounts for mobile astrophotography the CGEM II takes a middle position.

CGEM II

The new CGEM II not only looks very trendy, but it also features a few real innovations when compared with its predecessor.

  • New powerful motor electronics with the latest firmware.
  • USB 2.0 port on the hand controller. This way you can simply connect the hand controller to a PC for software updates.
  • PPEC (Permanent Periodic Error Control) ensures precise tracking.
  • Autoguider port. Indispensable for sophisticated astrophotography!
  • Tracking beyond the meridian.
  • The mounting saddle accepts prism rails acc. to Vixen and Losmandy standard. No adapter required.
  • Improved tripod with height marks: This makes it even easier to place the tripod horizontally.

With this mount, the telescope, camera and guider may have a weight of up to 18 kg. This leaves a really big tolerance range.

We offer the CGEM II, but also as a set together with the Schmidt-Cassegrain optics with apertures ranging from 8 to 11 inch (~200 to 280 millimetres): CGEM-II telescopes.

Combined with the classic SC-telescopes this provides you with excellent astronomical equipment which will give you joy for the rest of your life! If you have extra spending money, you should consider the CGEM II with EdgeHD. This variant of the Schmidt-Cassegrain telescope already has the correction optics for the unavoidable coma error integrated, allowing you to take sharp photos right to the edge.

Whatever you will decide, with the CGEM II you can’t go wrong!

10.12.2019
Currency
Service
Advice
Contact
Universe2Go