11 best finder scopes

• 6x30 Metal Finderscope; The SV182 finder scope with 6x power magnification and a 30mm diameter lens collects ample light to make aiming your telescope easy and fun
• Achromatic 2-Element lens design; The SV182 finder scope features fully muilt coated achromatic finder scope optics; Can effectively eliminate aberrations and chromatic aberrations
• Easy to use;With metal finder bracket; 2 plastic adjustment screws with a 90 degree angle and a fixed spring push-pull screw; only need to adjust 2 screws to quickly find the target
• Internal matting design; the inside of the SV182 finder scope fully threaded to minimize reflections
• Lightweight and compact; SV182 finder scope net weight is 0.49lb that won't add excessive weight or bulk to your OTA

User questions & answers

Question:	Does the dovetail fit a celestron nextstar 6se
Answer:	One install option is one, 2 install options are 2
Question:	I have the svbony eyepiece with crosshair and attachment leds to light up the crosshairs. can i use the attachment on this as well
Answer:	Yes. It doesn’t seem to be designed for any seat in particular, so I think you can put it anywhere in your car.

Product features

15mm comfortable eye relief

Even wearing glasses to give you a relaxing and enjoyable viewing experience;More comfortable observation

Come with fixed screws

Aluminum dovetail bracket has easy oriented alignment screws.2PCS Nylon-tipped thumb screws will not scratch the body of the finder scope

6x30 optics viewfinder

6x30 finder scope Locate objects in the main telescope helps find the objects soon.Help locate objects you want to observe

Adjusted simply

Adjusting is very easier; one screw does left-right, the other does up-down. It only take 20 seconds to adjust

Easy to install

The mount is designed to slide into a pre-existing shoe rather than fit directly to the telescope

Blackened eyepiece lens edge

inside of the lens barrel and the edge of the eyepiece are painted black, which can effectively suppress stray light and ensure the image quality

Product description

"Attach two finder scopes or other aiming devices to your telescope quickly and easily

Use any combination of two aiming devices you wish including finder scope, red-dot reflex sights, green laser pointer brackets, mini guide scopes, and more

Allows use of two finders with no drilling required

Great for both visual observers and astrophotographers

You'll never go back to using just one finder scope again! "

• "Attach two finder scopes or other aiming devices to your telescope quickly and easily
• Use any combination of two aiming devices you wish including finder scope, red-dot reflex sights, green laser pointer brackets, mini guide scopes, and more
• Allows use of two finders with no drilling required
• Great for both visual observers and astrophotographers
• You'll never go back to using just one finder scope again! "

User questions & answers

Question:	Can this be mounted to a rail with what looks like a screw hole on the bottom
Answer:	This one does not sing.
Question:	Can it be mounted on a deep space hunter
Answer:	Not really and we sent it back because it didn’t really sing either, it snag for like 5 seconds and stopped
Question:	does it come with two universal dovetail bases or do you have to purchase those separately. Images shows it does but want to verify
Answer:	X4 A76 alkaline batteries is what the box says
Question:	What is the size and length of the screws? I would like to pick up nuts as well
Answer:	There's a switch on his side that takes it from demo into full mode to off. God bless☺

• The finder scope is a secondary scope that's used to help you locate objects in the main telescope;3 thumb screws allow positioning XY adjustment for precise telescope alignment
• It provide 5x24 low power magnification;the telescope fixed to the body of a more powerful telescope and pointed in the same direction for initially locating an object to be observed
• Tube has a glossy black metallic finish and cross hair reticle;includes mounting bracket and dust caps;the bracket fits any telescope optical tubes and the dust caps protects against dust and fingerprin
• Mounting bracket has curved base with two holes and attaches to telescope tube with bolts or screws;bracket will not slide into a dovetail base
• Wth it you are more convenient to find the star

User questions & answers

Question:	Will it fit my gsyker? Somebody mentioned needing a modification
Answer:	Just so we're clear. All of this dialogue is relevant. However, I want to point out that if you mount the the 700x32c's onto a unicycle it will be possible to ride wheelies. However you have been warned, a phenomenon that will inevitably rotate around your axle's axis and the tires stand still...they honestly brake that well! The first time this happened I fell off. It's definitely something to get use to.
Question:	Will this fit Bushnell model
Answer:	They will but beware the consequences. These tires are supposed to provide extra protection so I didn't use a condom. Now the GF is saying she is preggers with twins. What happened to the protection?
Question:	Will this fit a celestron firstscope
Answer:	I have light leather seats in my Jeep and have had these protectors for over 5 months with NO bleed through or any other issues I really like them and you can’t beet the price I have a much more expensive set in my other vehicle that I wish I had known about these before spending what I did on the other brands Hope this helps
Question:	Does it fit with meade etx telescopes
Answer:	The set you show in the picture is for the booster seat. It comes up in the back hi enough to cover the booster seat. You would need one for each booster seat. Their is one they sell for a regular baby car seat. Again each seat would have its own. The back is high and covers the whole back on the seat. They are nice to protect the car seat.

Product features

High quality eyepieces and objectives

Quality crosshair viewfinder makes targeting celestial objects in your telescope easy!

Fully coated, achromatic glass optics yield crisp, bright images for easy aiming.

• 9x50 finder scope with 50mm objective lens diameter, brighter DSOs directly visible.
• Makes a large number of aditional stars available - a big plus for being able to successfully locate objects.
• The 90° viewing angle makes your searching much more easy and comfortable, even near the zenith.
• The achromatic optics provide a bright, true-to-life image at 9x magnification. In addition, the optical surfaces have been multi-coated to prevent irritating reflections.
• Folder fits onto most telescopes, easy focusing at the objective lens. Adjustment of finder scope alignment via two screws and spring.

User questions & answers

Question:	Can Plossl eyepieces from Astromania, (i.e. Astromania's 12.5mm Illuminated Reticle Plossl), or Kellner eyepieces be used with this finder scope
Answer:	All eyepieces have a focal length and it is very important to know what it is and what it means. Being made of usually several lenses, the eyepiece will have a focal plane. That's where the eyepiece focuses on and examines the image formed by a telescope, for example. Usually the focal length is printed right on the barrel of the eyepiece in millimeters. The importance of this is that you can determine the magnification of your telescope by knowing the scope's focal length and the eyepiece focal length. Say you have a telescope that has a focal length of 500 mm. this would also likely be somewhere on the scope or in the instruction manual. The magnification of the telescope will be the focal length of the telescope divided by the focal length of the eyepiece. So if you have a 500 mm focal length telescope and use a 4 mm eyepiece, the magnification is 500/4=125X. Or if you use the same scope with an eyepiece that has a focal length of 10 mm the magnification will be 500/10= 50X. An eyepiece with a focal length of 25 mm gives a magnification of 500/25= 20X. So you can see the shorter the focal length of the eyepiece for a given telescope, the more power or magnification. But there are drawbacks to magnification. With higher magnification you get a narrower field of view, compared to lower magnification. Also, for a given scope there is a limit to the amount of magnification it will handle. Too much magnification and the image gets blurry or soft. Magnification is not the most important number when using a telescope. There's more to it, hope can help you!
Question:	Do the crosshairs light up
Answer:	Hi Ken Wilson,the aperture of 4mm telescope eyepiece is aluminum alloy, and the mirror body is plastic, the lens is optical glass.hope this can help you!Sincerely Angela
Question:	I understand the astromania 9 X 50 finder scope barrel is made of metal but what about the eyepiece and lense holder? Are they plastic or metal
Answer:	Depends on what exactly "regular" means. An apparent field of view of 62° is more than what Huygens eyepieces (around 30-35°) and Kellner eyepieces (about 45°) have, the usual design for low-cost eyepieces such as those which are included with many beginner telescopes. Furthermore, 62° is also more than what Plössl and Super Plössl eyepieces (around 45-52°) offer, which are more expensive than Huygens or Kellner eyepieces and which are typically the first choice for better and yet affordable all-around eyepieces. On the other hand, 62° is slightly less than for Erfle eyepieces (around 65-68°, usually called WA for wide angle) and less than for ultra-wide angle eyepiece designs (anything beyond about 80°), both of which are more (WA) or much more (UWA) expensive than these aspheric eyepieces. From my point of view, these aspheric eyepieces mainly rival Plössls, as they have about the same optical quality with a larger apparent field of view for less money. They are no match for WA and UWA eyepieces, both in optical performance or price, and they easily outperform Huygens or Kellner eyepieces.
Question:	The finder scope comes supplied complete with a robust mounting plate." Is this the mounting bracket for the telescope
Answer:	yes, it fit all standard 1.25" telescopes

Product features

The advantages in a nutshell:

• 9x50 finder scope with 50mm objective lens diameter
• brighter DSOs directly visible
• holder fits onto most telescopes
• easy focusing at the objective lens
• adjustment of finder scope alignment via two screws and spring

Angled eyepiece

The 90° viewing angle makes your searching much more easy and comfortable, even near the zenith. You will no longer need to strain your neck at difficult angles and are also able to search for objects which are not so easy to find. And if it takes a bit more time, then that is no longer a problem.

9x50 - the numbers say it all

This finder scope has a 50mm aperture, and so provides a particularly bright image. Objects which you are not even able to see using just the naked eye will usually become directly visible. Also, if you are trying to locate one of the brighter DSOs, this will no longer be able to remain hidden, giving itself up to your searching eye.

A big plus

A star map with reference stars with which one can orient oneself is usually used to find particular objects. Some of the stars shown on star maps cannot be seen, or are difficult to see, with just the naked eye however. This finder scope makes a large number of aditional stars available - a big plus for being able to successfully locate objects.

The achromatic optics provide a bright, true-to-life image at 9x magnification. In addition, the optical surfaces have been multi-coated to prevent irritating reflections.

How to find your object

The Astromania 9x50 finder scope has built-in crosshairs to let you find the correct object more easily and to put it in the middle of the main telescope's field of view. The threads have been kept quite fine but are still very visible against the night sky nevertheless. The finder scope comes supplied complete with a robust mounting plate. Two adjustment screws and a compression spring allow very rapid alignment with the main telescope. Precise focusing can be achieved by rotating the objective lens.

Product description

The Celestron Star Pointer Finderscope is the way to go if you want the easiest way possible to locate an object and center it in your eyepiece. A red dot finder, unlike an optical finder, has 1x magnification, displays a super wide field of view, and keeps the sky right side up and left-to-right correct, matching what you see with your unaided eyes. An LED creates a red dot, superimposed on a viewing screen, so you simply point the Star Pointer to the area or object you wish to observe, look through your eyepiece, and if properly aligned, the area in and around place you pointed the red dot will be centered in the field of view. If you like the idea of having some magnification, try installing both a red dot and optical finder on your telescope. Schmidt-Cassegrain and EdgeHD telescopes have multiple mounting bracket holes so you can get the best of both worlds. Just make sure to align both of them correctly, and you’ll get the best use out of each of your finders. How to Align the Star Pointer Finderscope The first time you use your finder, you need to align it. This one-time setup procedure should be done during the day. Take the telescope outside and find an easily recognizable object, such as a streetlight, car license plate, or tall tree. The object should be as far away as possible, but at least a quarter mile away. Move the telescope left and right or up and down so that it is roughly pointing at the object. Look through the telescope using your low power eyepiece and move the telescope until the object you chose lies in the center of the view. Once the object is centered in your eyepiece, turn on the red dot. With your head positioned about a foot behind the finder, look through the round lens of the finder and locate the red dot. Without moving the telescope, use the two adjustment knobs located on the side and underneath the finder. One controls the left-right motion of the dot. The other controls the up-down motion of the dot. Adjust both of these until the red dot appears over the same object you are observing in the eyepiece. Your finder is now aligned and should not require realignment unless it is bumped or dropped. You can even take the finder off the telescope and reattach it while preserving alignment.

• The Star Pointer Finderscope adds “point and look” functionality to any telescope!
• This red dot finder keeps the sky right-side up, matching what you see with your unaided eyes
• The adjustable red dot is bright enough to see day or night
• Attaches to just about any telescope thanks to the small footprint, even works great with astronomical binoculars and spotting scopes
• Includes mounting base and a long-lasting CR2032 3V battery

User questions & answers

Question:	Can this attach to Skywatcher 10 in dobsonian
Answer:	It comes with several different adapters to connect it.
Question:	Can this be mounted on a Celestron funscope
Answer:	It should. I mounted mine on my AstroMaster 70EQ. It works great!
Question:	Is this mounted by dovetail or otherwise
Answer:	It has a base that attaches to the scope. Then the site slides into a dove tail mount on the base
Question:	Does this fit witg meade etx telescopes
Answer:	It comes with a long and short foot with dovetail, so it should fit any telescope with somewhere to affix it. If you have an available dovetail, great; if you don't want to drill holes just stick it on with some double sided tape - it's very light. Keep in mind though that I hardly use it anymore, because I got a Telrad finder, which makes finding and centering objects way, but way easier.

Product features

Celestron 51630 Star Pointer Telescope Finderscope

• The StarPointer Finderscope adds “point and look” functionality to any telescope!
• This red dot finder keeps the sky right-side up, matching what you see with your unaided eyes
• The adjustable red dot is bright enough to see day or night
• Attaches to just about any telescope thanks to the small footprint, even works great with astronomical binoculars and spotting scopes

• Compatible with mainstream auto guiding cameras; 1.25in and M42 mount interface designed for compatible with SV305 Pro and for Orion ZWO QHY and so on auto guiding cameras(Some camera models require additional accessories to assist in focusing)
• Sharp image; Ultra wide band fully multilayer coated lens; doublet glass and the 30mm achromatic optics prevent irritating reflections can bring you bright and clear images
• 45mm back focus distance; Allows easy and precise focus adjustments and f4 aperture optics provides a very wide field of view which will help to quickly find the target when performing astronomical observations
• Nylon-tipped thumbscrews; Comes with the mounting rings with plastic tipped screws as not to scratch the scope tube and it can be moved to any position
• Quality craftsmanship; By using high-level CNC metal processing technology; SV165 guide scope has exquisite appearance; delicate feel and beautiful shape; fine workmanship bringing you visual enjoyment

User questions & answers

Question:	Can this product be mounted on/or adapted to a dlsr hot shoe such as a sony a
Answer:	I’ve pumped it up to 110 and it was fine. Never went to 120 psi.
Question:	How wide is the dovetail base
Answer:	Yes, it will fit. It’s a great tire
Question:	Does this have screws for the bottom 1/4th holes
Answer:	The 25 is 2 mm wider. Both sizes will work on the same rims. There is a definite trend in the last year or two to put slightly wider tires on road bikes. In fact I think that many bike shops and tire manufacturers are trying to get rid of their 23 mm inventory. I think this is a very good thing. The 25 will probably be as fast (some claim faster) than the 23. More importantly, you can run slightly lower pressure, which gives you a slightly softer, more comfortable ride. Also, because you have a little more rubber on the road, you will have a more secure footing on sandy or wet pavement. You may also be slightly less likely to flat as well, with the 25. As soon as I wear out the 23 mm tires I have on my Ridley Noah, I will be putting on 25 mm tires.I would most definitely recommend the 700x25.
Question:	What would be the ATO max focal length that you would use this guide scope with
Answer:	No. This is per tire.

Product features

SV165 Mini Guide Scope Support sensitive auto guiding cameras for easy guide star acquisition

Getting this guide scope makes sense for most astrophotographers out there.

If you're just starting out, SV165 Mini Guide Scope is easy-to-use and performs well.

If you're at the other extreme, using SV165 Mini Guide Scope on your smaller imaging rigs is more practical than trying to mount a larger, more exotic guide scope.

If portability is important to you, SV165 Mini Guide Scope's compact size and relatively low weight will cooperate with your requirements.

Note:Back focus distance can stretch up to 45mm. Please pay attention to stretch to the end.

For Auto Guiding Cameras

Designed for SV305 Pro ZWO QHY Orion Auto Guiding Cameras

Great Fully Multi-Coated optics

SV165 Guide Scope Optic Glass is Fully Multi-Coated to eliminate chromatic aberrations and to keep the image crystal clear;Never worry about color fringing or chromatic aberration again.

Dovetail includes 1/4″screw hole

SV165 Guide Scope can be directly connected to a tripod with UNC 1/4-20,so you can directly use it as a small telescope.

Portable

--11cm x7.8cm with lens and dust cover, the 30mm guide scope is convenient to carry

--342g weight adds hardly any weight to an astrophotography setup

Product description

The easiest way to aim a telescope. The view seen through the window of the Telrad is continuous with the sky around it, not magnified or upside down. Three rings are lighted and appear to lie among the stars. The small ring outlines the Moon-sized area seen in the telescope. The large outer ring outlines the area seen in a standard Finderscope. To point your telescope, just look through the Telrad and move the telescope until the rings are centered on the object. The Telrad is 8 inches long. Weighs 11 ounces and mounts on any telescope without drilling any holes. It unlocks from its base for separate storage. Requires 2 AA batteries (not included).

• The easiest way to aim a telescope. The view seen through the window of the Telrad is continuous with the sky around it, not magnified or upside down.

User questions & answers

Question:	Does the telrad come with a mounting base, or do you have to buy one separately
Answer:	I've been using 23s and it's worked good for hundreds of miles.
Question:	is it compatible with a celestron lcm 114 reflector telescope
Answer:	Tires and tubes are sold separately
Question:	Will this substitute the Celestron 8se finder scope? Any suggestions
Answer:	120 psi ... too much. The sweet spot for these road tires is 95-105psi. Smooth ride, great handling, low rolling resistance.
Question:	is this aright angle finder, or will i have to crouch and look along the telescope tube to aim it
Answer:	Yes

Product description

Features:

Mainly be fit for Celestron 80EQ SE SLT PS series and meade infinity and polaris and so on series astronomical telescope (Note: Meade Infinity Series: 80AZ 90AZ 102AZ and Polaris Series: 80EQ 90EQ not applicable) Simple, affordable, and effective red dot sighting device aiming your telescope. Have variable brightness levels, fully adjustable up and down, left and right. LED dot is projected onto a non-magnifying viewing window so you can aim the main telescope quickly and easily. Red dot finder scope top part can be removed and used as a replacement for many other red dot finders found on telescopes.

Specification:

Allow mounting with hole distances from 5/8 to 1 inch approx

Color: Black

Material: Plastic

Battery: CR2032 Button Battery But Not Included

Dimension: Approx. 115*70*40mm / 4.5*2.8*1.6in

Weight: Approx. 40g



Package List:

1 * Red Dot Finder Scope

Telescope in the picture is prop.

• Mainly be fit for Celestron 80EQ SE SLT PS series and meade infinity and polaris and so on series astronomical telescope (Note: Meade Infinity Series: 80AZ 90AZ 102AZ and Polaris Series: 80EQ 90EQ not applicable)
• Simple, affordable, and effective red dot sighting device aiming your telescope.
• Have variable brightness levels, fully adjustable up and down, left and right.
• LED dot is projected onto a non-magnifying viewing window so you can aim the main telescope quickly and easily.
• Red dot finder scope top part can be removed and used as a replacement for many other red dot finders found on telescopes.

Product description

Sometimes looking through a straight finder scope can be a strain, making you crouch down and crane your neck for a clear view. Well, you can call off the chiropractors because this Orion 9x50 Right-Angle Correct-Image Finder Scope lets you view in contortion-free comfort! What's more, it has a built-in Amici prism to provide a correctly oriented view - not upside-down as with standard finders. This achromatic crosshair finder scope sports deluxe features including fully coated glass lenses, internal baffling, and focus adjustment. The Orion 9x50 Right-Angle Correct-Image Finder Scope includes a sturdy aluminum bracket with two perpendicular thumbscrews and an oblique spring-loaded tensioner for easy two-step alignment - a big improvement over older six-setscrew designs. You'll have this finder scope aligned with your telescope in no time. The finder scope bracket features a dovetail foot that fits most Orion telescopes. An optional dovetail base can be purchased for custom installations, or for dual-finder scope desires. The right-angle prism and eyepiece are not removable, but focus can be adjusted by rotating the front lens housing. A locking ring lets you set the focus point however you wish. This Black 9x50 Right-Angle, Correct-Image Finder Scope is a large-aperture model ideal for use with bigger telescopes. With 50mm of aperture and a wide 5° field of view, you'll be able to identify bright deep space curiosities for clues of where to aim your telescope for more magnified inspection. The finder scope's significant 9x magnification makes it easy to aim your telescope with precision. Weighs 18.6 oz.

• A powerful 9x crosshair finder scope with a comfortable right-angle viewing orientation
• 50mm diameter lens provides a bright image through the finder for easy aiming anywhere in the sky
• Right-angle design lets you use the finder without crouching or craning your neck in an awkward position
• Internal correct-image prism provides a daytime oriented view through the finder - not upside down as with standard finders
• Fully coated glass elements minimize reflection to yield crisp, bright images with a 5 degree field of view

User questions & answers

Question:	Do you recommend this for a Orion SkyQuest XT10 or overkill
Answer:	I have these installed on my large Celestron OTA's, but in each case I also h ad to purchase the right "shoe" to mount on the optical tubes. Contact Orion for the right advice: telescopes.com.
Question:	Do you recommend this for a Orion SkyQuest XT10 or overkill? http://amzn.com/B001DJ4FEE
Answer:	The short answer to these questions is "no". If this finder scope does not have a removable eyepiece it is not possible to attach a camera, but regardless it would be inadequate as a guide scope. There is not enough aperture or focal length to be a suitable guide scope. These finder scopes are designed for a low power wide field view which is opposite of what you need in a guide scope.
Question:	Are there any advantagesof buying the illuminated version of this finder? I'm wondering whether or not it's worth$40more dollars to get the illuminate
Answer:	Yes, this finderscope should fit onto Celestron's Nextar 127 without issue. The Dovetail foot on this finderscope is compatible with the Base that is included on most Celestron telescopes; and this should certainly include their 127mm Cassegrain. Please let us know if we can be of further assistance.
Question:	I have a Celestron NexStar 102 with built in dovetail foot. Will the scope mount properly if it is not an Orion Telescope
Answer:	Yes. I bought a set of svbony filters and they work great on these eyepieces.

Product description

This product is made of high quality material. It fits maximum dia. 38mm, minimum 5mm laser pointer, compatible with different types of laser pointer. Easy to install and use, a good choice for you.



Specifications:

Condition: 100% Brand New

Item Type: Laser Pointer Bracket

Material: Aluminum Alloy

Fitness: For Celestron, Sky-watcher, Vixen, etc

Aperture: 1/4 Standard Camera Thread Hole

Size: Approx. 20 * 29 * 42mm / 0.8 * 1.1 * 1.7inch

Weight: Approx. 161g / 5.7oz



Package List:

1 * Laser Pointer Bracket

1 * Fixing Ring

• ​Made of high quality aluminum alloy material, this product is sturdy and durable.
• Fits maximum dia. 38mm, minimum 5mm laser pointer, compatible with different types of laser pointer.
• Comes with 1/4 standard camera thread hole, suitable for most telescopes, like Celestron, Sky-watcher, Vixen.
• All-metal precision CNC process, fine workmanship and professional design.
• Easy to install and use, a great choice for astronomical telescope lovers.

User questions & answers

Question:	Q:Does the base of the bracket fit a Meade brand shoe
Answer:	Black, I have bee riding my bycicle for over 15 years long hauls 60 to 100 miles, and these are the tires that I recommend
Question:	I would like to use this mount with a awb onesky. any advice? thanks in advance
Answer:	Is just the newest generation conti tire for racing and training
Question:	Does the base of the bracket fit an Orion brand shoe
Answer:	Nothing. The Gatorskin 700x25 is only made in Clincher

Product description

Spend less time centering your target and more time stargazing with Celestron’s new premium finderscope: StarPointer Pro. Traditional red dot finderscopes were originally created for shooting sports such as airsoftairsoft guns and shooting sports. StarPointer Pro was designed for astronomers by astronomers to provide the easiest experience locating celestial objects in the night sky. Whether you’re new to the hobby or a seasoned amateur astronomer, you’ll appreciate StarPointer Pro’s thoughtful design features. While a red dot can obstruct your desired target, StarPointer Pro projects two circular LED reticles. Just place your target inside the circles and it’s ready to view in the eyepiece. The circles also serve as a measuring tool while starhopping. For added convenience, StarPointer Pro offers a 40 mm optical window with a large field of view. StarPointer Pro attaches quickly to any telescope and secures with a dovetail connection and finger knobs. No screwdriver needed! Get more out of every stargazing session with StarPointer Pro.

• Designed by astronomers for astronomers, this premium finderscope allows you to precisely zero in on your target
• Projects a dual-circle reticle, not a red dot that can obscure your subject
• Larger 40 mm optical window offers a wider field of view so you can acquire targets quickly and easily
• Brighter LED for easy visibility during the day
• Easy dovetail connection; no tools required

User questions & answers

Question:	will it fit a 4se
Answer:	American Classic wheels ? Doesn’t matter what the wheel is - must be tubeless ready rim - then they are compatible These are tough to mount and inflate easily without the sealant - so great fit - and ride superbly - on my second pair First pair lasted whole season in 2019 - racing and training Malcolm
Question:	Will this work on a zhumell z
Answer:	Yes, they are a standard clincher style tire that work with all standard rims as well as rims designed for tubeless tires.
Question:	Will this work on celestron c
Answer:	Yes and the quality is very good. It's the real Continental brand tire for bike. I already ordered 3 times and always in the original boxes. Hope I anwsered well your question.
Question:	How many degrees wide are the two circles
Answer:	Yes. But, I am using tubes on the Mavic rims. I gave up on tubeless after a flat wouldn’t seal and I was covered in sealant spray during the blowout. Road tires run with such high pressures that I found the sealant wouldn’t work above 50 or 60 lbs.