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Celestron RASA 8 8-Inch Rowe-Ackermann Schmidt Astrograph

4.4 (6) Write Review
Free shipping on orders over $29.99

$2,079.00

$ 99 .00 $99.00

In Stock

About this item

  • 8-inch optical tube assembly - 42 mm T-thread camera adapter - C-thread camera adapter - Fan Battery Pack - 2-Year Warranty
  • Flat field free of optical aberrations like field curvature, coma, astigmatism and chromatic aberration across an entire APS-C sensor.
  • NEW Ultra-Stable Focus System six precision sealed ball bearings virtually eliminate image shift.
  • Integrated air cooling system 12V DC MagLev fan reduces cooldown time and provides optimal air flow while filtering out dust.
  • Internal filter mount seamlessly accommodates a Light Pollution Imaging Filter into the optical path.


Incredibly fast f/2.0 systemFlat field free of optical aberrations Patented optical designDesigned for use with CMOS, smaller CCD, and mirrorless camerasUltra-Stable Focus System six precision sealed ball bearingsIntegrated air cooling system and filter mountCGE dovetail mounting railWeighs just 17 pounds making it portablePerforms over a wider spectral range from 390-800 nm


K. Nye
Reviewed in the United States on December 12, 2024
My husband ordered this and is absolutely thrilled with it.
MIT Guy
Reviewed in the United States on April 27, 2024
Avoid like teh plague. I got a lemon from Celestron and asked for replacement an dthey denbied. kept fixing it (hosing it up !) and sending it bakc to me. Stick with a refractor. Askar has soem realy good and long focal length ones. I eneded up selling mine on ebay for a loss.
H Corrales
Reviewed in the United States on January 28, 2022
Great telescope for those that don’t have much time to image. Focus is good. Picture added was only 20 minutes with a color camera and idas nbz filter. I highly recommend this telescope
kwm1952
Reviewed in the United States on August 6, 2020
Bought this telescope for my son, he loves it! Highly recommends it!
hall
Reviewed in the United States on August 3, 2020
This is really a unique scope and defies the conventional wisdom of wide-angle deep sky imaging with a refractor and long exposure times. I never stop getting amazed by how fast it is and the image quality it produces. I believe electronically assisted astronomy (EAA) is the future of amateur astronomy -- our eyes evolves way slower than CCD and CMOS cameras. With the RASA you have the most powerful EAA device currently available.Important caution: Imaging at F/2 has its unique learning curve. The most important thing is make sure the spacing requirement is precisely satisfied. The critical focus zone is of the order of microns. If you are not seeing perfect round stars on the edges out of the box, DO NOT COLLIMATE the scope before you checked back focus and tilting. High quality parts such as those offered at PreciseParts.com can be of tremendous help. Collimation is rarely the problem. They are usually fine out of the box.
SKS
Reviewed in the United States on January 3, 2020
This scope is fantastic! The 400mm focal length is great for larger deep space objects. Celestron did a wonderful job with the focuser as well. After a few imaging sessions I've found focus to hold steady without a need to for tweaking. Only negatives I can come up with are that collimation is tricky and if your scope needs it be prepared. Once done though it will not likely need it again unless it is really beat around. Also Celestron should include the top rail, its pretty much a must have that should be stock.