Rother Valley Optics have put together an imaging rig consisting of the incredibly popular William Optics Zenithstar 73 ED APO superbly paired with the William Optics 50mm rotolock guidescope, finished off with the ZWO ASI 120MM Mini Monochrome Guide Camera. A perfect imaging set up all equipped for guiding immediately. This kit is in the red colour, but we can do kits with any of the other colours at the same price. Please enquire for more details.
Full specification of the individual items are below.
William Optics Zenithstar 73 ED APO.
This is the brand new William Optics Zenithstar 73 APO. This superb new scope features an air spaced doublet lens with fully multi coated optics and a Japanese Ohara FPL-53 ED glass element. Thanks to these high quality elements, this will provide very high contrast and sharp views virtually free from any false colour.
The ideal telescope for wide field, high resolution astrophotography and also visual work. The fast f/5.9 focal ratio and compact size makes it the perfect grab and go scope too.
Comes complete with mounting rings, guiding rings and vixen style dovetail bar.
Quality CNC machines aliminium for that luxury finish.
Dual speed 2.5" Rack & Pinion Focuser With 1:10 Reduction.
Refractable dew shield.
New matching anodized tube rings.
Available in a choice of Gold, Blue or Red.
William Optics 50mm Rotolock Guidescope.
All new unique, RotoLock high-quality fully multi coated WO 50mm f/4 Guiding scope that fits perfectly on your William Optics OTA and other telescopes.
The tube diameter is 54mm and dew shiled of 58mm.
• Guiding scope gives sharpest image and straight through viewing with an inverted image.
• High-quality 50 mm objective.
• 5.7 deg field of view.
Nice Fit & Finish
• White Powder painted with 1.25" color RotoLock.
•Perfectly suited for William Optics or other refractor.
•Guide Scope Weight: 460g
ZWO ASI 120MM Mini Guide Camera
The NEW ZWO ASI120MM MINI or ASI120MINI is an excellent choice for an affordable planetary and deep sky camera for those who have just started in astro photography, but cannot spend a fortune on a specialist astro photography camera or want to replace a modified webcam or a cheaper planetary imager. It replaces the extremely popular ASI120MM, but offers wider compatibility with various guiding solutions, guidescopes and off axis guiders as it comes in a more compact, 1.25" format body.
It also comes with an AUTOGUIDER PORT so you may use it for planetary imaging or when you take images of deep sky with another camera (a dSLR or a cooled ZWO) you may use this camera for guiding!
With the ZWO ASI120MM MINI camera you can achieve better results than with those beginner cameras. We are not saying that anything is wrong with those cameras like the TSSI, Scopiumcam or some converted webcams, but this is just simply better for a still affordable price.
According to customer feedback, these cameras worth every penny invested.
Mostly used for planetary imaging, it can also be used for deep sky imaging up to a certain level. This monochrome version is recommended for L-RGB or narrow band deep sky photography if you want to get out the best data from your camera and achieve sharp, contrasty deep sky images or planetary images, although you might also consider the USB3.0 version of the ASI120MM, the ASI120MM-S, that is slightly more expensive, but offers higher frame rates.
However if you don't want the hassle of using filters and stacking LRGB images into a colour image or cannot spend much time and happy to go for a compromise, simply choose the colour version, the ZWO ASI120MC-S.
With this monochrome version, you might also need a filter wheel and a set of L-RGB filters or H-alpha and OIII filters, and maybe even H-beta and SII filters as well for narrow band astro photography...) or you can use it just as it is as a very affordable guide camera.
Features of the ZWO ASI120MM Mini
Recommended for guiding and imaging the Sun, Moon and some deep sky objects.
(To image the Sun you'll have to use a proper front solar filter or Herschel wedge depending on your telescope. Please contact us if not sure! For imaging deep sky, you should also consider buying a filter wheel, LRGB and narrow band filters as well.)
Resolution: 1280X960 at up to 30fps
Long time exposure up to 1000s! (although depending on the focal ratio of your telescope and whether you use another camera for guiding or not, you might need to limit it to a much shorter time...please ask.)
Autoguider PortSOLAR IMAGING Please note, this camera features a Micron branded chip and thus it might produce Newton's rings (an interference pattern in imaging) when used with H-alpha solar telescopes. ZWO ASI CMOS cameras with a Sony chip or Celestron Skyris or Moravian Instruments G0 and G1 CCD cameras might be a better choice for solar imaging. From the ZWO range we'd recommend the ASI174MM or ASI174Mini for solar imaging. Never-the-less, there are quite a few customers who use an ASI120MM camera successfully for solar imaging.
Built-in RAW mode and Grey mode output support. Only about 30% storage space required compared to the Color data format!
Peak Quantum Efficiency: 75% (better than ICX618)
No fixed pattern noise (FPN)!
Full aluminum housing with standard 1.25" interface
M28.5 internal thread.
Specification of ZWO ASI120MM
Sensor: 1/3″ CMOS AR0130CS(Mono)
Resolution: 1.2Mega Pixels 1280×960
Pixel Size: 3.75µm
Exposure Range: 64µs-1000s
ST4 Guider Port: Yes
Focus Distance to Sensor: 8.5mm
Shutter Type: Rolling Shutter
Protect window: AR coated window
Operating System Compatibility: Mac, Windows, Linux
Bit rate: 12bit output(12bit ADC)
Adaptor:1.25″ / M28.5X0.6
Dimension: φ36mm X 61mm
Weight: 60g or 3.1 ounces (without lens)
Working Temperature: -5°C—45°C
Storage Temperature: -20°C—60°C
Working Relative Humidity: 20%—80%
Storage Relative Humidity: 20%—95%
More resolutions can be user defined
WHAT'S IN THE BOX:
- ASI120MM Mini monochrome camera
- ST4 cable
- USB cable
- 1.25" nosepiece with male T-thread
- 1.25" end cap for above nosepiece
- CD (with instructions, drivers and software, although we recommend to download the latest versions online)