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Celestron CPC 925 XLT Telescope

Celestron CPC 925 XLT Telescope
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Celestron CPC 925 XLT TelescopeCelestron CPC 925 XLT TelescopeCelestron CPC 925 XLT Telescope
Price  £2,998.00
List Price  £3,449.00
Saving Of  £451.00
(Inc. 20% VAT)
+

Model:  11074-XLT
Brand:  Celestron
Design  SCT
Size  9.25" (235mm)
Computerized  Computerized GOTO
Level  Advanced
Mount Type  Alt Az

Delivery:  Courier Delivery

Availability  

<p style='color:darkorange;'>No stock, delivery time 2 - 4 working days</p>  

No stock, delivery time 2 - 4 working days



2 Year Warranty On All New Items
(Excluding Batteries & Globes)


  (1 Review)

High Quality 235mm SCT package on a GoTo fork mount

CPC 925 GPS Unique design, advanced features, GOTO accuracy, and superb optics. You get the picture.

Celestrons 9.25 optical system has enjoyed a loyal following since we first introduced it with our Ultima 9.25 in 1995. Now the 9.25 optical tube is coupled with Celestron's newest computerized telescope family the CPC GPS series.

 

The 9.25 was already a favorite among astrophotographers and discerning visual observers and it offers 33% more light gathering than our 8" model. The CPC 925 GPS was specifically designed for visual infinity focus when using 2" eyepieces and has an optimized baffle system to benefit astrophotography by minimizing vignetting at the edge of the field of view. Its longer primary focal length and lower magnification secondary mirror contribute to a flatter field of view at the focal plane and helps to further reduce optical aberrations.


General Details:

- 9.25" Schmidt-Cassegrain telescope
- Celestron's premium StarBright XLT coatings
- Fully computerized dual fork arm altazimuth mount
- 8x50 finderscope to help accurately find objects
- Newly designed heavy-duty tripod makes attaching the telescope so easy you can do it in the dark; also features sturdy 2" steel legs and accessory tray
- Ergonomic design - Comfortably lift and move the telescope from location to location
- Star diagonal provides more comfortable viewing position when observing objects that are high in the sky
- Convenient remote hand control holder - Allows you to view information hands-free while using the scope

Technical Information:

OPTICAL DESIGN: Schmidt-Cassegrain
APERTURE: 235 mm (9.25 in)
FOCAL LENGTH: 2350 mm (92.52 in)
FOCAL RATIO: 10
FINDERSCOPE: 50 Finderscope w/ quick release bracket
MOUNT: Dual Fork Arm
OPTICAL TUBE: Aluminum
EYEPIECE 1: 40 mm (1.57 in)
MAGNIFICATION 1: 58.75 x
STAR DIAGONAL: 1.25
ACCESSORY TRAY: Leg Brace / Eyepiece holder
TRIPOD: Heavy Duty Steel Adjustable
CD ROM: NexRemote control software w/RS232 cable
POWER SUPPLY: Car battery adapter
HIGHEST USEFUL MAGNIFICATION: 555 x
LOWEST USEFUL MAGNIFICATION: 3 x
LIMITING STELLAR MAGNITUDE: 14.4
RESOLUTION: 0.59 arc seconds
RESOLVING POWER: 0.49 arc seconds
PHOTOGRAPHIC RESOLUTION: 200 line/mm
LIGHT GATHERING POWER: 1127 x
ANGULAR FIELD OF VIEW 0.7 °
LINEAR FIELD OF VIEW (@1000 YDS): 38 ft (11.58 m)
OPTICAL COATINGS: Starbright XLT Coating
SECONDARY MIRROR OBSTRUCTION: 3.35 in (85.09 mm)
SECONDARY MIRROR OBSTRUCTION BY AREA: 13 %
SECONDARY MIRROR OBSTRUCTION BY DIAMETER: 36.2 %
OPTICAL TUBE WEIGHT: 22 lb (9.98 kg)
TELESCOPE WEIGHT: 58 lb (26.31 kg)
TRIPOD AND MOUNT WEIGHT: 19 lb (8.62 kg)
MOTOR DRIVE: DC Servo motors with encoders, both axes
MOTOR RESOLUTION: 0.14 arc seconds
COMPUTER HAND CONTROL: Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons
TRACKING RATES: Sidereal, Solar and Lunar
TRACKING MODES: Altazimuth, EQ North & EQ South
ALIGNMENT PROCEDURES: SkyAlign, Auto Two-Star Alignment, Two-star Align, SolarSystem Align, EQ North Align, EQ South Align, One-Star Align
SOFTWARE PRECISION: 24bit, 0.08 calculations
PERIODIC ERROR CORRECTION: Permanently Programable
FORK ARM: Dual fork arm, cast Aluminum w/ detachable HC cradle
GEAR: 5.625 hard anodized gear in both axes, 180 tooth
BEARINGS 9.8 azimuth bearing
COMMUNICATION PORTS: RS-232 counication port on hand control
MOTOR PORTS: Aux Port, Autoguide Ports
DATABASE: 40,000+ objects, 400 user defined programmable objects. Enhanced information on over 200 objects
POWER REQUIREMENTS: 12VDC 1.5A
POWER REQUIREMENTS - IDLE CURRENT: 340 mA
POWER REQUIREMENTS - SLEW ONE AXIS: 640 mA
POWER REQUIREMENTS - SLEW BOTH AXES: 900 mA
CORD MANAGEMENT: Cord Wrap Software
GPS: Internal 16 channel

Please note that stock levels do fluctuate so please call or email to check today's stock before placing your order.

Average Rating (1 Review):  
Write a Review and share your opinions!

Rating:  
CPC 9.25
05 June 2014  | 

This telescope had good reviews, but I didn't expect it to be so good. It's a bit heavier than I thought it would be, but I have it permanently mounted, so it's not an issue. THe first look at Jupiter was amazing. So much detail was visible.

My main interest is double stars, and it has the clarity for me to split some really tight doubles. My personal favourite, Porrima was easily split and looked wonderful.

Was this helpful to you?  Yes  /  No

37 of 37 people found this review helpful.

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.

 


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  (1)

280mm SCT package on a GoTo fork mount

The largest aperture of the CPC GPS line, The CPC 1100 GPS Schmidt-Cassegrain telescope has the most light gathering power and has a limiting magnitude of nearly 15. The CPC 1100 GPS takes full advantage of its vast database of thousands of NGC and Abell galaxies as well as delivering a new level of detail to all your favorite deep sky objects. This CPC 1100 GPS features Celestron's premium StarBright XLT coatings.