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Celestron RASA 11" Telescope V2

SKU : CE-91076

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  • This 11-inch astrograph was built for speed!
  • Focal ratio: f/2.2.
  • Rare earth glass: perfect color, coma free, and field-curvature free.
  • 43.3 mm image circle.
  • 2 Year manufacturer's limited warranty!

Product Details

  • The Celestron 11-inch RASA combines speed with performance. Based on the original Schmidt camera design, the RASA optical tube offers significant advantages by providing a short focal length for a relatively large aperture. Experience essentially perfect imaging with this Celestron astrograph. 

    The Celestron RASA offers an exceptionally sharp 43.3 mm image circle that accommodates large sensors. Its large image circle creates an exceptional wide-field, allowing you to fill even the largest imaging chips with edge-to-edge pinpoint stars with minimal vignetting. 

    Fast Astrograph Optical System

    Its short focal length provides a wide-field f/2.2 system, offering the advantage of better apparent tracking. With only a 620 mm focal length, exposure times are also greatly reduced when compared to traditional Schmidt Cassegrain telescopes. You'll be capturing better images in a fraction of the time, without the need of an autoguider!

    Excellent Clarity and Flat Field of View

    The Rowe-Ackermann scopes are perfect for creating giant night-sky mosaics, surveying, and comet hunting. Designed with 4-element rare-earth glass, images are free of false color, coma, and field curvature. Optical quality this excellent has been unheard of in astrographs within this price range.

    Below you'll see an incredible image of the Rosette Nebula taken by Jason Guenzel using the Triad Ultra filter on the super-fast f/2.2 Celestron RASA telescope! 

    Jason Guenzel Nebula with RASA and Triad Ultra

    Designed for Peak Performance

    Engineered as a complete astro-imaging system, every component of the Rowe-Ackermann Schmidt Astrograph is optimized for peak performance with DSLR and astronomical CCD cameras. Down to the thickness of the glass used in the included fully multi-coated optical window or an optional imaging filter, every component of the system has been taken into careful consideration to work together seamlessly.

    Celestron RASA Highlighted Features

    • StarBright XLT fully multi-coated optical system.
    • A custom engineered linear brass focuser bearing.
    • New Ultra-Stable Focus System (USFS) minimizes focus shift and mirror flop
    • A 12V MagLev fan reduces cool-down time and provides optimal airflow through the dust-filtered optical tube.
    Includes M48 and T-Thread camera adapters and 2 year Celestron warranty.
  • specifications

    Aperture279 mm (11")
    Back Focus72.8mm
    Camera/Eyepiece ConnectionMale T—Thread (M42x0.75)
    Corrected Image Circle43.3mm
    Dawes Limit0.42 arcseconds
    Focal Length620 mm
    Focal Ratiof/2.2
    Free ShippingYes
    Highest Magnification558x
    Light Gathering Power1589x
    Limiting Magnitude16
    Optical DesignRASA
    RMS Spot Size4.4 microns
    Secondary Obstruction114mm
    Tube Diameter330 mm
    Tube Length838 mm
    Tube Weight43 lbs
  • included items

    • Celestron 11-inch RASA astrograph OTA.
    • M48 camera adapter.
    • 42 mm T-thread camera adapter.
    • 2 Year manufacturer's limited warranty.

Product Reviews

Customer Reviews
4.9 Based on 17 Reviews
5 ★
94% 
16
4 ★
6% 
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  • Moon
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AH
10/27/2021
Anant H.
United States United States

Amazing Scope

Shipped same day, Arrived fast and in great condition!

CV
10/12/2021
Charles V.
United States United States

Celestron CGX-L Mount

I’ve only had the mount for a short time but so far everything about it is excellent. I only have a light load on it but I needed a very stable mount because I have wind often and I didn’t want that to prohibit astrophotography. I’m impressed that there is nearly no backlash. Dec reversal is nearly instantaneous. There is no slop in the gears so the spring loaded worm gears are working. I looked at periodic error and I estimate that it’s about 10 arcseconds. A smaller number would have been nice but it’s very smooth, no erratic movement, so an autoguider would have no issue guiding it out. I performed drift alignment on the mount and it was a breeze. The az/el movements are smooth and precise. I’ve had a number of mounts and some of them have had issues with reversing the Dec causing movement in RA. No trace of that with mount. I’ve found a bit of a learning curve with the hand controller as the way the functions are implemented are a bit different from other hand controllers. So far I have no reason to think the CGX-L won’t be a great mount for astrophotography.

JF
08/12/2021
Joe F.
United States United States

Polar Alignment is Critical

Great, but it took a while for me to get it going for Astrophotography. I did only visual for about a year using the 14 edge hd and was satisfied with the tracking but I did not have much success getting more than 4 second exposures, as the stars became elongated and the DSO's were blurry. I even ordered another GEM because I thought that I had a lemon mount for astrophotography. Thank goodness the mount I ordered was on back order, so while I was waiting for my new mount to replace the CGX-L, I ordered the Celestron polar alignment scope. WOW!!!!, once I polar aligned my scope I was getting 2 minute exposures and every aspect of the mount improved over 100%!!! I use a live video stacking Mallincam camera and use my system as a travel scope so I was not interested in doing long exposures and the 2 minute exposure is plenty of time to get fantastic videos and live stack images. The bottom line is be SURE to POLAR ALIGN before each imaging session and you will have a mount that WILL meet your needs at the best price available. So I cancelled my order for the new GEM that I do not need and saved $5000, in the process. So the malfunction was not the CGX-L, it was my fault for not following recommendations to Polar Align!!! OPT did refund my order on the GEM I did not need. I can say with joy, that OPT and Celestron are a Great Bunch to purchase from, obtain information from, and maintain a customer/vendor friendship with. Thanks Again OPT and Celestron!!!!!!!!

OPT Telescopes Celestron CGX-L with 11 RASA V2 - CE-12074 ReviewOPT Telescopes Celestron CGX-L with 11 RASA V2 - CE-12074 Review
C
07/22/2021
Curt
United States United States

CGXL the ultimate mount?

I've run a CGE mount for 15 years pushing the load limits, held out as mounts come and go, and then the CGXL came out, heard a lot of good things about it, time to step it up. WOW! Last night I rough aligned towards North and set altitude using the gauge on the mount nothing fancy, performed a two-star alignment, the moon was super bright it was late done for the night. Today I used 'last alignment' to see if I could find any planets during the day. I was stunned to see Mercury, Venus, and Sirius slewed almost directly centered in the eyepiece first time! Amazing! This mount far exceeds expectations ! The feel, the sound, 'Go to' accurate tracking everything about this mount is all business, looking forward to imaging stay tuned for an update. Note: If you have an observatory you will need an adapter plate to attach the mount to the pier, should be mentioned if purchasing w/out the tripod? The 110-volt power supply does not come with it. The manual is a PDF file, would prefer a hard copy. Cheers!

GR
05/11/2021
Gordon R.
United States United States

Dead on tracking and pointing.

Easy to use and VERY accurate. Manual, precise polar alignment doesn't really take that long and with a high power reticle eyepiece very accurate. Doing high power solar and lunar I can walk away for half an hour and its still right on feature I was observing. I'm sure it would require little or no adjustment after an hour. Every thing high quality. Well worth the wait the recent wait.. I have two. One for 6" refractor and one for 14" SCT. Strongly recommend GPS unit. Adds significantly to accuracy and makes startup fast. Also dead centers Mercury, Jupiter and Saturn after sunrise and midday.

PJ
10/19/2020
Park J.
United States United States

buy it now

it is the best telescope to see the planets and the moon i love it, let me tell you jupiter is beautiful !