SAVE $$$! Complete Advanced Astrophotography Bundle! WO Zenithstar 81 WIFD, iOptron GEM28 Open Box, ASI585MC-P & More...

iOptron GEM28 GoTo German Equatorial Mount - iPolar - Hard Case

• German Equatorial Mount (GEM)
• Great for Visual Use and Astro-Imaging
• Large, Easy, Quick-lock Gear Clutches
• Built-in iPolar Electronic Polar Finder
• Max Payload of 28 lb (12.7 kg)
• Mount weighs only 10 lb (4.5 kg)
• Precision Stepper Motor - Precise Go-To
• Includes Go2Nova 8409 Controller/Technology
• +/- 10 arcsecond PEC
• Permanent PEC (PPEC)
• Includes Built-in Wi-Fi & ST-4 autoguider port
• Includes Standard 1.5" Tripod
• Includes Hard Case for Storage/Transportation

Like their predecessors, the GEM28 mounts were designed with portability in mind, weighing in at only 10 lb. But, it can support up to a 28 lb payload an incredible 2.8 mount weight-to-payload ratio. The key to providing such an impressive ratio is the engineering methods used to reduce the mount weight. The German Equatorial design mount was created and offered for those astronomers who want the traditional German mount. Other features include a design of mount which can function at latitudes over 60°, as well as accurate pointing and tracking.

In addition, iOptron has added features for convenience and functionality. A positive lock gear engagement system (easy to use even when wearing gloves), built-in Wi-Fi, enabling unparalleled connectivity, and recordable permanent periodic error correction (PPEC) to repeat optimal PEC training sessions. The GEM28, Model G28AC German Equatorial Mount from iOptron delivers precise pointing and accurate tracking. The GEM28, Model G28AC sets a new standard for compact GoTo equatorial mounts.

The iOptron GEM28, Model G28AC Equatorial Mount is equipped with the latest advanced GOTONova GO-TO technology, which means it is now one of the most powerful and accurate GO-TO mounts available. Its database includes over 212,000+ objects! The Go2Nova Hand Controller is intuitive and very easy to use. Its large 4-line LCD screen simplifies the process of setting telescope parameters and locating objects, to make the astronomer's task even easier. This GEM28, Model G28AC German Equatorial mount from iOptron will be a delight to use for all of your astronomical observations, and for doing astro-imaging.

This GEM28, Model G28AC mount has an iPolar electronic Polar Scope installed for quick and easy polar alignment. It also includes a 1.5" heavy duty stainless steel tripod, and includes a Hard Case.

What's In The Boxes?

This model includes: A GEM28 German Equatorial Mount Head, CW shaft, 10 lb Counterweight, Go2Nova 8409 Controller/Technology, Cord for Controller, Integrated iPolar Polar Scope, 1.5" Standard Tripod, and a Hard Case.

Specifications:

William Optics NEW ZenithStar 81 WIFD - T-ZS-81RD-WIFD

 ZWO ASI585MC Pro Cooled Color Camera

ASI585MC Pro is a new ZWO deep sky camera based on the 4k SONY CMOS sensor with a 1/1.2″ format and 2.9μm pixels. It has a super high sensitivity and a large resolution of 3840*2160 (8.29MP in total). It also features high transmission speeds – In high-speed mode, the fast frame rate can reach 47fps at full resolution! Being an entry-level DSO camera, it offers great advantages of high cost-effectiveness.

Note:

External power supplies are needed for all ASl-cooled cameras. We recommend you use a 12V@3A~5A DC adapter (D5.5×2.1mm, center pole positive) or a lithium battery with 11-14V to power the camera. You can also use ASIAlR to power the cameras. Be aware that using a power supply out of this voltage range will probably lead to irreparable damage to the camera.

ASI585MC Pro

One Camera for All

The STARVIS 2 technology brings ASI585MC Pro more advanced imaging performance compared to other cooled cameras. Its high frame rate makes it not only suitable for DSO photography but also solar/lunar/planetary photography.

STARVIS 2

STARVIS 2 was developed by SONY and evolved from STARVIS. It is the latest technology with a wider dynamic range and super-high sensitivity beyond the human eye. Benefiting from it, ASI585MC Pro’s sensitivity and signal-to-noise ratio is greatly improved.

Large Full Well Capacity

The back-illuminated structure improves the camera’s full well capacity. Even with unbinned 2.9μm pixels, ASI585MC Pro has a full well capacity of 47ke-, nearly 4 times that of the last-generation sensor IMX485. A larger full well capacity gets the camera higher efficiency in collecting light, can effectively restrain the highlight area from being overexposed, and also can improve the signal-to-noise ratio.

Zero Amp Glow

ASI585MC Pro exhibits extremely clean dark frames with zero amp glow! No matter how long the exposure and how high the gain value is, you can easily get clean and smooth astro images!

Note: This feature is implemented directly at the hardware level, it does not require software control.

512MB DDR3

ASI585MC Pro uses a USB 3.0 interface, along with the built-in 512MB DDR3 cache, ensuring high-speed, smooth, and stable data transmission.

USB 3.0 Port & USB 2.0 HUB

USB 3.0 Port: Provides 5Gb bandwidth to allow ASI585MC Pro to run at 47fps at 8.29MP full resolution (10bit, high-speed mode).
USB 2.0 HUB: Can be used to connect various kinds of USB devices such as EFW, guide camera, and EAF.

Two-stage TEC Cooling

Thanks to the two-stage TEC cooling, ASI585MC Pro can lower the CMOS sensor temperature to more than 35 degrees Celsius below ambient temperature, which can greatly reduce dark current generation and sensor noise even during extended exposure times.

*The Delta T 35℃ is tested at 30℃ ambient temperature. It might get down when the cooling system is working for a long time. Also, as the ambient temperature falls, the Delta T would decrease.

Below is the dark current curve of ASI585MC Pro at the temperature from -20℃ to 30℃.

Camera Performance

Low read noise, High dynamic range

The camera has a built-in HCG mode, which can effectively reduce read noise at high gain and allow the camera to maintain the same high dynamic range as it does at low gain.

When the gain reaches 252, the HCG mode will be automatically turned on and the dynamic range reaches a level close to 11bit. The read noise in this case can be as low as 0.9e.

QE (Quantum efficiency)

Based on our testing results, the QE peak value of ASI585MC Pro is 91%.

Connection Methods (Back Focus Distance: 55mm)

Connection to External Devices

Structural Dimension Diagram

In the Box