Celestron CGEM II 800 RASA Telescope

$3199.0 Buy It Now or Best Offer
free,30-Day Returns

Seller Store focuscamera
(174804) 99.3%,

Location: North Brunswick, New Jersey
Ships to: US,
Item: 375588657596

Return shipping will be paid by:Seller
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
Return policy details:
Celestron:Celestron
MPN:12020
UPC:050234120203
Manufacturer:Celestron
Type:Telescope

VISIT OUR EBAY STORE Celestron CGEM II 800 RASA Telescope Condition: Brand New in Original Packaging SKU: 12020-CELESTRON Features 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 nmSturdy Equatorial CGEM II mount Product Description Capture spectacular wide-field deep sky images in seconds with Celestron CGEM II 800 RASA Telescope. This incredibly fast f/2.0 system is the perfect companion to today’s color astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras. Thanks to its fast focal ratio and patented optical design, you can produce sharp, detailed images and, in many cases, skip the autoguider completely. Weighing in at just 17 pounds, it’s easy to transport your 8-inch RASA to the most remote dark sky locations. This kit combines the 8-inch Rowe-Ackermann Schmidt Astrograph (RASA) with the CGEM II EQ mount.RASA Performance Made for Everyone The 8-inch RASA is an imaging telescope that delivers a flat field without optical aberrations for razor sharp stars across a wide field of view. It can capture stunning deep-sky astronomical images without the challenges typically presented by longer focal length instruments at a fraction of the cost of those systems. With the 8-inch RASA, a wider range of astroimagers can enjoy the benefits of the RASA design. It includes features such as the integrated air-cooling system, internal filter mount, and sturdy CGE dovetail mounting bar. Purely designed for imaging, the 8-inch RASA cannot be used visually. The prime focus focal plane is located at the front of the optical system, so it cannot accommodate a traditional eyepiece.Shorter Exposure Times and Virtual Real-Time Observing Since it is an F/2.0 optical system, imagers can use shorter exposure times to capture detail in faint objects. When combined with sensitive cameras and the proper live stacking software, the 8-inch RASA can provide an almost real-time observing experience. View images on a computer instantly that are brighter and more detailed than can be seen in much bigger telescopes with the naked eye.Unique Optical Design RASA’s optical design is patented (US 2016/0299331 A1) consisting of a Schmidt corrector, primary mirror, lens group, and optical window. The lens group contains 4 elements and utilizes rare-earth elements. Unlike many telescopes that only perform well over the visible spectrum (400-700nm), the optic is designed to perform over a wider spectral range, from 390-800nm. This allows more of the light emitted from the astronomical object to be sharply focused in the image. All refractive optical surfaces are coated with StarBright XLT coatings, while the primary mirror uses enhanced aluminum coatings. This maintains high light transmission through the entire optical system and provides better optical performance and field illumination.Built for Latest Cameras Unlike the larger RASAs that work with DSLR and large CCD cameras, the 8-inch model was designed with color astronomical CMOS cameras, smaller CCD cameras, and mirrorless cameras in mind. The telescope does not work with standard DSLR cameras. It is optimized for sensors with up to a 22mm diagonal, but performs well with sensors up to 32mm diagonal. The APS-C sized sensors used in many mirrorless cameras are a good choice. The 42mm full frame sensors will also work, but performance will be poor at the edges of the sensor and field illumination will be reduced.CGEM II: An Excellent Platform for RASA CGEM II is a sturdy equatorial mount capable of rigidly supporting the 8-inch RASA. Its 40lb load capacity can handle the 17lb optical tube with ease, leaving lots of capacity to spare for your camera and any accessories. The heavy-duty adjustable height tripod has 2-inch diameter steel tripod legs with graduated markings that make it easy to extend the legs to the same height. The CGEM II has Permanent Periodic Error Correction (PPEC). This allows you to run a routine to record the periodic errors only once; the recording is kept in memory, and subsequently corrects for the mount’s periodic tracking error. What’s in the Box Celestron CGEM II 800 RASA TelescopeM42 Camera AdapterC-Thread Camera AdapterFan Battery PackCGEM II Equatorial Head TripodAccessory Tray1 x 17 lb Counterweight NexStar+ Hand Control DC Power Cable Hand Control Holster Specifications Celestron CGEM II 800 RASA Telescope Optical TubeOptical design: Rowe-Ackermann Schmidt AstrographAperture: 203mm (8-inch)Focal length: 400mm (15.74-inch)Focal ratio: f/2.0Central obstruction diameter: 93mm (3.66-inch) (46% of aperture diameter)Light gathering power (Compared to human eye): 843xResolution (Rayleigh): 0.68 arc secondsResolution (Dawes): 0.57 arc secondsImage circle: 22mm (.86-inch) Ø, 3.15°Useable field: 32mm (1.26-inch) Ø, 4.6°, only minimal performance loss at edge of FOVWavelength range: 390 – 800 nmSpot size: < 4.6 μm RMS across image circleOptical coatings: StarBright XLTOff-axis illumination: 93% at 11mm (.43-inch) off-axisOptical window: 46mm (1.81-inch) ØBack focus with included camera adapter: 25mm (.98-inch)Back focus from top of threaded collar: 29mm (1.14-inch)Optical tube: AluminumOptical tube length: 628mm (24.7-inch) length | 235mm (9.3-inch) diameterFocuser: Ultra-Stable Focusing SystemOptical tube weight: 17 lb (7.7 kg)Other features: Air-cooling system, integrated filter mountDovetail: CGE Dovetail BarMountMount type: Computerized EquatorialInstrument load capacity: 40 lb (18 kg)Height adjustment range (includes mount and tripod): 1346 - 1651mm (53 – 65 inches)Tripod leg diameter: 50.8mm (2-inch) Steel tripod with graduated markings on lower sectionLatitude adjustment range: 15 - 70°Mount head weight: 40 lb (18.14 kg)Accessory tray: YesTripod weight: 20 lbs (9 kg)Weight of counterweights: 1 x 17 lbSlew speeds: 9 slew speeds - max speed 4.5°/secondTracking rates: Sidereal, Solar and LunarTracking modes: EQ North and EQ SouthDovetail compatibility: Dual saddle plates (Vixen and CGE saddle)Number of auxiliary ports: 2 Aux ports (1x Hand control port and 1x AUX Port for optional accessories)Autoguide port: YesUSB port: Yes, input on Hand ControlPower requirements: 12V DC, 3.2 ampsMotor drive: DC servo motorsAlignment procedures: 2-Star Align, 1-Star Align, Solar System Align, Last Alignment, Quick AlignPeriodic error correction: YesComputerized hand control: 2 line x 18 character backlit Liquid Crystal Display, 19 LED backlit buttons, USB 2.0 port for PC connectionNexStar+ database: 40,000+ objects, 100 user defined programmable objects Enhanced information on over 200 objectsSoftware: Celestron's Starry Night Special Edition Software, SkyPortal AppTotal kit weight: 95 lb (43 kg) Shipping Payment Returns Feedback Shipping for this item is free in the Continental US Lower 48 states only. Shipping Fees include all handling & insurance. For Domestic Shipping to the Lower 48 States: All shipping prices include shipping, handling and insurance (if necessary). For Domestic Shipping to Alaska, Hawaii, Puerto Rico, US Territories, APO & FPO: For many items to these destinations there will be an additional shipping fee. The shipping costs may be calculated on the Shipping and Payments tab by entering your Zip Code. Free shipping is for the lower 48 only For International Shipments: All international orders are managed through eBay's Global Shipping Program. Please see the Shipping Tab for full costs. Hotels: Unfortunately at this time we do not ship to hotels. Paypal: PayPal is our preferred method of payment for all of our eBay sales. For customer service please contact us through eBay Messages Immediate payment via PayPal is required for all Buy It Now items. For all Best Offers, payment is required within 3 days. If you need special arrangements, please contact us through eBay messages. After your order has been shipped, you will receive an e-mail with the name of the carrier and the tracking number. Returns are permitted if you are not satisfied with your purchase and must be initiated by the buyer within 30 days from delivery date. For Domestic Purchases: If you are not satisfied with your purchase, you may return it (see exceptions in Paragraph F below), within 30 days of receipt, for a refund or replacement - subject to the following: a) Contact us through eBay messages or the returns link to receive a Returned Merchandise Authorization (RMA) number to ensure proper handling of the return and/or replacement. b) In order to be eligible for a full refund, less shipping expenses, your returned merchandise must be in its original new condition, as shipped, with all packaging, manuals, and paperwork intact and unaltered. Items which have been opened are returnable, however they will carry a restocking fee. c) Customers remain responsible for the shipping and handling expenses incurred in shipping the item to them. If an item is offered with "Free Shipping," this means we are paying the freight on your behalf. If that product is returned for a refund, the shipping expenses incurred, will be deducted from the refund. If an item is refused, the carrier bills us for shipping both ways, and these expenses incurred on your behalf need to be deducted from your refund d) All returns are subject to inspection. Products returned must be in brand new condition, as per Paragraph b), if not, it may be deemed non-refundable or will be subject to at least a 15% restocking fee. If your return is missing accessory components, or shows signs of wear - restocking fees will be higher. For specific restocking fees that may be applicable to your return, please contact us through eBay messages. e) Returns should be packed in an outer shipping carton, not just the original box/packing of the product. The RMA# should be clearly inscribed on the shipping label. A copy of your invoice and Order # should be included, and your return should be insured, with shipping costs pre-paid. We cannot accept any COD shipments. f) There are product categories which are not returnable due to hygienic or sanitary as required by manufacturers. If your items is a consumable good or is has been locked by a manufacturer such as Apple or HP the return will not be accepted For Warranty information, merchandise lost / any other issues in transit, or order cancellations, please contact us through eBay Messages. In an event where there is an error regarding a price error or description, we will notify you ASAP. In this event there will be no obligation to proceed with the purchase. Any amount charged to the customer will be 100% refunded. For International Purchases: Returns will be accepted within 30 days of the receipt of the item. In order to be eligible for a refund your returned merchandise must be in its original unopened condition, as shipped, with all packaging, manuals, and paperwork intact and unaltered. Items removed from their 'blister-pack' display packaging are non-refundable. International Buyers must pay return shipping via the same method originally shipped. We strive for every transaction to be five stars! Please let us know how we can make yours a five-star rated one too! Our goal is to make sure you are customer 100% satisfied with your order. When you receive your order take a minute to leave us positive feedback at eBay. If you are not satisfied with any part of our service we please contact us to allow us correct the problem, prior to leaving your feedback. Please send us a message through eBay and let us know how we can earn your 5 stars! 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