Second Hand ZWO ASI071 MC Pro Camera

Second Hand ZWO ASI071 Mc Pro Camera in excellent condition. We have performed a full test on the camera to ensure it is in perfect working order. There are very few useage related scuffs but nothing affecting the actual purpose of the camera. 

Why buy RVO used and approved? Unlike many 2nd hand items available online each and every pre used product we sell is meticulously checked over by a professional here at RVO, giving you complete peace of mind. 

• RVO used and approved
• Checked by the RVO team
• 3 Months warranty

As we may know before, ZWO ASI071MC Pro was made with the Legendary Sony CMOS chip IMX071. It fits telescopes of all sizes and does not have many requirements for flatteners. The perfect performance in dark field with extremely low amp glow makes it an excellent camera for long exposures. Since we already have a cool version of ASI071, in this article, we are going to reveal the differences between these two cameras. Let’s see what changes and improvements ASI071MC Pro has made on earth.

ASI071MC Pro has been redesigned from the inside out, using a larger 86mm shell to accommodate bigger boards and internal devices.

Improvement No.1: 6 tightened screws

The new sealing way brings excellent sealability for the camera, also keeps it safe and sound in rough roads. No matter how bad the weather is, ASI071MC Pro can always stay dry and sealed inside.      

Improvement No.2: DDR Memory Buffer

DDR memory buffer can act like computer memory. The image date from CMOS will be saved into DDR memory buffer at a very high speed, then slowly transferred to the hard disk through the USB cable. One advantage to this is that the speed of exporting images can be very fast, while the noise accumulated in the readout process could be greatly decreased. Another advantage is that the images won’t be lost even if something wrong happens with the connection between the camera and computer. It can be re-transferred.  

Improvement No.3: Dark current 

Thanks to DDR buffer and new improvement of hardware design, ASI071MC Pro’s control ability to dark current has been greatly increased. The dark current is very close to that of a cooled CCD camera now, and will only be 0.00064e/s/pix when it comes to -15℃.

Improvement No.4: Main parameters

ASI071MC Pro offers very good performance for astrophotography. Low read noise, high dynamic range.

Improvement No.5: QE value

The QE peak value of ASI071MC Pro is about 50%. Such efficiency is not suitable for snapshot obviously, instead, you can use it to take some great long-exposure photos.

Some other features of ASI071MC Pro:

1. It includes a unique tilt adapter. You can now easily adjust the camera imaging plane with the adapter outside without screwing off the camera cover.

2. It equips with2 extra USB ports which allow you to connect more USB devices(like guide cameras). That will greatly help solve the USB HUB shortage problem.

3. All necessary cables and adapters are included with ASI071MC Pro in the box. You can match them with the 55mm flattener to get 55mm back focus!

Some items that are showing as in stock are in stock at our holding warehouses, not at the shop. To double check the stock levels at the shop, please contact us on 01909774369 or sales@rothervalleyoptics.co.uk.

The delivery times for most items is 1 - 2 days but again, please double check stock levels on important orders before placing an order via the website.

The delivery costs for courier next day are for mainland UK only. If you live in the Scottish Highlands/Islands, Channel Islands or Northern Ireland, then a shipping surchage will apply. please contact us for prices. Smaller items can still go 1st class via Royal Mail.

Please note that if you are wanting to take advantage of our Saturday and Sunday timed services or next day pre 12 or pre 10:30 services, you MUST check that the stock is here at the shop before placing orders. Also, orders using the Saturday and Sunday services must be placed before 1pm the previous working day. Also, please remember to check that the stock is here at the shop before placing orders. If the stock is not at the shop, we won't be able to ship on any of the timed services. 

Please note International customers will need to contact us for a shipping price prior to ordering via the website. We don't ship all items internationally. It is at our discretion what we ship outside of the UK. This all depends on the size and weight of the items. Please get in touch with us for any postage costs. Please note we do NOT ship telescopes or heavy items outside of the UK. This is due to massive postage costs and problems regarding returns.

If you have any questions regarding stock levels or delivery, please get in touch.

Zygo Interferometer Testing For ED Refractor Telescopes!

We are extremely pleased to announce our Zygo Interferometer is now installed and ready for use! Our experienced staff can test refractor lenses up to 120mm aperture and provide a comprehensive 2 page report showing the optical quality and Strehl ratio, plus much more information. We are using the very latest Zygo MX software to provide a more detailed report compared to other standard reports.

The interferometer is essentially a measuring instrument. Within the interferometer is a calibrated laser that is pointed through the optical test surface, then onto a high quality reference sphere, then back through the test subject then to an internal camera which gives us the measurement on the screen. From this, we can adjust the position of the test optic and the reference sphere to obtain a perfectly calibrated system. The more central the laser to the test optic and then on return, the better and more accurate reading and measurement we can take. This takes a lot of adjustment to get the best results from the optical surface. Once the measurement has been taken, we are provided with a series of results that show the optical quality of the surface plus other information. Continue reading for an explanation of the individual values and you can also see a test report that was done on one of our RVO Horizon 60 OTAs. 

We are offering certain telescopes with a Zygo test at an extra cost. Mainly ED doublets and triplets. All available telescopes with a Zygo test report are listed here. Just select Zygo Test Report from the drop down box at the top of the listing and we will test the optics in house and provide a full 2 page report with your scope. This will show you the optical quality of your telescope optics. We can also offer this service on your refractor telescope. Please get in touch for more details about this. 

At Rother Valley Optics, one thing we pride ourselves on is customer service and quality of our equipment. When we test your telescope, we will ensure that it is of the highest quality otherwise, we will reject the scope under our strict quality control and test another model for your peace of mind. One of the main values to look at when testing a refractor is the Strehl ratio. The higher this number, the higher quality lens you have. At Rother Valley Optics, we will guarantee the highest possible Strehl ratio for your telescope.  We will aim to provide 0.95 Strehl or higher on Takahashi, RVO Horizon, William Optics and many more! Generally, the higher the Strehl ratio, the lower the Astigmatism and Coma meaning a better image quality from your instrument. 

Other measurements such as the PV and RMS are important too. With these measurements, the lower the number the better as it shows less curvature on the lens. The flatter an optical lens, the better it will perform. The PV rating (Peak To Valley) is a measurement from the highest point (Peak) to the lowest point (Valley). From this we get the RMS (Root, Mean, Square). This is a similar figure to the PV and measured exactly the same way. The RMS is basically an average height difference from the PV so again, the lower the better. As you can see form the example below, we measured an RMS of just 0.027 wave which is a very good value.

We also measure the Power with our systems which is essentially the error from the reference sphere to the test optic. The reference sphere we use on our system is a very high quality sphere so the closer to zero the Power, the less error between the 2 elements thus ensuring a higher quality optical surface. 

You will also see some more values such as Astigmatism and Coma. Again, these are measured by the interferometer when we take measurements of the optical surface after adjustment. These are values which ideally would be at 0 but as our test optics are all curved lenses, there will always be astigmatism and coma present. The lower the number, the less of these aberations you will effectively see but with most refractors, you can buy field flatteners which will compensate for the coma anyway. The astigmatisms value is explaining the error between the symmetrical curvature of the lens. Basically, no lens will be perfectly symmetrical, the lower the astigmatism, the more symmetrical the lens surface is. 

Once the Zygo test report has been completed, the optical alignment is thoroughly tested and tuned to ensure they are spot on before they leave us. 

All available telescopes are on the website at the link below and ones we've tested already that are available straight away are also listed.

https://www.rothervalleyoptics.co.uk/zygo-tested-refractors.html

Here is an example of the test what we provide. This was a test on one of our Horizon 60 ED OTA's.

For any questions about this amazing new service, please either call 01909774369 or email sales@rothervalleyoptics.co.uk.

Are you interested in this product but would like to speak to someone with some more information? Simply fill in the form below and we will get back to you as soon as we can!

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