With its moderate aperture and a respectable focal length, the Celestron Omni XLT 102mm f/9.8 Refractor Optical Tube Assembly is an ideal choice for making detailed observations of the moon and planets, with the ability to resolve bright deep-sky objects. The combination of medium-sized aperture and reliable refractor design keeps the weight under 10 pounds, so you can easily transport and carry it to dark, remote locations for better views. The OTA is offered without a tripod or pier for those who already have a reliable support system.

102mm Achromatic Refractor OTA    1000mm Focal Length, f/9.8 Focal Ratio    StarBright XLT Multicoated Optics    1.25" 90° Diagonal and 40x Eyepiece    Vixen-Style Dovetail Mounting Bar    6x30 Finderscope with Bracket    Manual Equatorial Mount with Tripod    Slow Motion RA and DEC Controls    Adjustable Height Stainless Steel Tripod    7 lb and 4 lb Counterweights

• Moderate 102mm (4") aperture f/9.8 is ideal for lunar & planetary viewing with the ability to resolve bright deep-sky objects
• 1000mm focal length produces a high magnification potential
• Achromatic refractor lens configuration is reliable and does not require much maintenance or calibration by the user
• Proprietary StarBright XLT anti-reflection multicoatings reduce light loss while improving light transmission, color rendition, and contrast
• Resolution: 1.36 arcsec, Rayleigh;1.14 arcsec, Dawes
• Sturdy rack-and-pinion focuser can handle eyepieces and accessories without flexing
• L1.25" holder will accept the most popular size eyepieces and accessories

• OTA only—mount head and tripod required for proper use
• Vixen-style dovetail plate is compatible with any alt-az or equatorial mount with a Vixen-style saddle
• 9.5-pound weight, ensure the head and tripod you mount it on can support this payload, plus accessories used with it like imaging systems, eyepieces, diagonals, Barlows, and filter wheels

Eyepiece:

• 1.25" diameter barrel
• Accepts most 1.25" astronomical filters
• 25mm focal length produces 40x magnification
• 50° field of view

• 1.25" snout and eyepiece holder
• 90° angle puts head in comfortable viewing position when scope is aimed straight, or nearly straight, up
• Star diagonal corrects image horizontally, but not vertically, so images are right-side-up, but flipped backwards

• 6x magnification ensures a wide field of view for easier alignment and faster star-hopping navigation
• 30mm objective won't add excessive weight and bulk to scope
• Mounting bracket included

Related Questions and Answers

Q: 1. Is there a recommended bag for the 102AZ? You have a Mead bag for 102 telescopes, will it work?

A: The Meade bag will work so will the Ruggard Deluxe Padded 42" Tripod Case (Black) BH #RUBD3042 • MFR #BD-3042 https://www.bhphotovideo.com/c/product/883682-REG/ruggard_bd_3042_deluxe_padded_42_tripod.html

Q: 2. were do the batteries go?

A: The batteries go on top of the tripod- under a cover.

Q: 3. Can this be combined with the StarSense app and holder offered be Celestron on other telescopes?

A: Unfortunately no, the Celestron Omni XLT 150 150mm f/5 EQ Reflector Telescope is not compatible with the Starsense holder.

Q: 4. does this product include the OTA and the tripod?

A: Yes it does. In the box: Celestron Omni XLT 150 150mm f/5 Reflector Optical Tube Assembly 25mm Eyepiece Mounting Ring Assembly 6x30 Finderscope with Bracket Limited 2-Year Warranty Celestron Omni CG-4 Mount Adjustable Tripod 4.0 lb Counterweight 7.0 lb Counterweight Limited 2-Year Warranty

Q: 5. I see there is a recommendation for a carry case for the tripod (Ruggard Deluxe Padded 42" Tripod Case). What would the recommendation be for a carry case for the OTA? Or does the OTA come in a case?

A: The Ruggard Deluxe Padded 42" Tripod Case (Black) should work with the OTA, as well as Mount/Tripod.

Q: 6. Can the phone take pictures of the objects ?

A: No, the phone on the side is only for alignment. You can attach a 2nd camera or phone to the eyepiece using this adapter: https://www.bhphotovideo.com/c/product/1435002-REG/celestron_81035_basic_smartphone_adapter_1_25.html

Q: 7. Where was this made? Country of Origin?

A: The StarSense Explorer DX 102AZ is manufactured in China.

Q: 8. Does this telescope require an erecting prism for terrestrial viewing? If so, which one is recommended?

A: First of all, do not buy it as mine was returned because of material flaws, loose screws and sloppy screw holes that were not put in correctly. I will not buy any Celestron product any more.

Q: 9. Will this telescope take a 2 diagonal?

A: Yes this scope will fit a 2 Diagonal. It comes with an adapter to accept 1.25 and 2 eyepieces.

Q: 10. Any infomation on included accessories such as eye pieces, diagonal and view finder would be helpful. It seems that a 25mm eye piece is included. Is this eye piece similar in quality to the omni eye pc range? Woild a 5mm eye piece be to strong magnification in general for this scope?

A: In the box: 25mm 1.25 " Eyepiece 6x30mm LER Finderscope Finderscope Bracket Combination 1.25 " & T-Thread Adapter With this scope the highest magnification I would recommend is a 4mm eyepiece 1.25 " 90-Degree Mirror Diagonal Dovetail Mounting Plate Tripod with Accessory Tray 7 lbs Counterweight 4 lb Counterweight The Sky CD-ROM Software for Windows 2-Year Warranty