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This Item  Celestron - NexStar 127SLT Computerized Telescope - Compact and Portable - Maksutov-Cassegrain Optical Design - SkyAlign Technology - Computerized Hand Control - 127mm Aperture |  |  |  |  | |
| Price | -7% $649.95 List: $699.95 | -18% $440.72 List: $539.95 | -6% $599.95 List: $639.95 | $129.99 | $19.99 |
| Delivery | Get it as soon as Wednesday, May 15 | Get it as soon as Wednesday, May 15 | Get it as soon as Tuesday, May 14 | Get it as soon as Tuesday, May 14 | Get it as soon as Tuesday, May 14 |
| Customer Ratings | |||||
| Easy to use | |||||
| For beginners | |||||
| Easy to assemble | |||||
| Portability | |||||
| Value for money | |||||
| Sold By | Amazon.com | Amazon.com | Amazon.com | DoubleSun | Sameyee |
| focus type | Manual Focus | Manual Focus | Manual Focus | Manual Focus | Manual Focus |
| eye piece lens | Plossl | Plossl | Plossl | — | Barlow |
| objective lens diameter | 127 millimeters | 90 millimeters | 130 millimeters | 60 millimeters | 1.25 inches |
| aperture diameter | 127 millimeters millimeters | 90 millimeters millimeters | 130 millimeters millimeters | — | — |
| telescope mount | Altazimuth Mount | Altazimuth Mount | Altazimuth Mount | Altazimuth Mount | — |
| weight | 18.1 pounds | 11.99 pounds | 11.4 pounds | — | 3.87 ounces |
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Customer Review: Waste of time and money.
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Celestron NexStar 127SLT Computerized Telescope Demo
Jem Williams
Reviews with images
For Mak Lovers
I have a love for Maksutov-Cassegrain telescopes. Started with an 80mm x 500mm f/6.3 MTO 3M-6A. Moved up to a C90 Mak. Wanted a go-to so I traded laterally to this NexStar 90 SLT. Same 90mm x 1250mm f/13.9 as the C90.Maksutov pros: portability, planetary use, no collimation, meniscus corrector designMaksutov cons: not as "fast" and limited deep sky compared to refractors, long cooldown time90 SLT pros: features to price ratio, easy connection for DSLR/Mirrorless with a T-Ring adapter90 SLT cons: Sky-Align proving fussyI tried 3-star alignment on two occasions. Once from a Bortle 4 and once from a Bortle 3. Neither time would the scope "go to" Saturn after alignment. I'm sure it's operator error and I have to practice more. Went out in the field once and discovered Solar tracking not straightforward to unlock. I watched a tutorial and took notes so I'm sure the second time will be a success. (UPDATE: Solar Tracking successfully unlocked and working. YAY!)This telescope is PERFECT for APS-C cameras vs The Moon or The Sun (NEVER AIM YOUR TELESCOPE OR CAMERA AT THE SUN WITHOUT A SOLAR FILTER FOR THE PROTECTION OF YOUR EYES AND EQUIPMENT)With a level and balanced setup, Lunar tracking has been a breeze. As I said any other failures are likely on my part for planetary and solar go-to and tracking. Practice makes perfect. I'm still learning the NexStar system. I wish to expand my skills and get to Venus, Jupiter, Saturn and appropriate deep sky objects. This is a package I can definitely grow into.Attached pictures taken with the Celestron NexStar 90 SLT and a Sony a6300 APS-C Mirrorless camera. No images were stacked, these are single frame:Waxing Crescent final edit from ARW fileAbstract Image final edit from ARW file (tracked the Moon and it went behind a tree - took unfocused shot to show the donut shaped bokeh of the reflex lens)3x eyepiece projections onto a6300 sensor of Moon Details final edit from ARW fileSolar image final edit from ARW file (I used a Spectrum Telescope Glass Solar Filter ST425G)(UPDATE: Solar closeup image - final edit from 12 ARW files, aligned & stacked)I also attached a chart showing how much of the sensor on APS-C is covered by the Moon. It would be the same coverage for the Sun as well.If Lunar and Solar observation/imaging is a primary focus for choosing a scope, the 90 SLT is a great choice. It is less of a "tight fit" to get the Moon or Sun onto an APS-C sensor than the 127 SLT to ensure you are imaging in the clearest part of the lens (the middle). Also, there is more weight left over to add camera/accessories onto the 90 SLT and not overburden the 8lb payload capacity of the mount vs the 127 SLT.Bonus feature for me: I plan on adding a small (perhaps 90mm x 500mm) achromatic refractor to my arsenal sometime in the future and the mount should be able to handle that well.
Top reviews from the United States
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Reviewed in the United States on March 1, 2024
Style: 127 SLT MaksutovSet: Telescope OnlyVerified Purchase
Reviewed in the United States on February 21, 2024
Style: 127 SLT MaksutovSet: Telescope OnlyVerified Purchase
Reviewed in the United States on February 19, 2024
Style: 127 SLT MaksutovSet: Telescope OnlyVerified Purchase
Top reviews from other countries
Adrian S.
Excelente producto
Reviewed in Mexico on April 13, 2024Style: 127 SLT MaksutovSet: Telescope OnlyVerified Purchase
Amazon Customer
Good telescope and leaves you wanting more
Reviewed in the United Kingdom on February 11, 2024Style: 127 SLT MaksutovSet: Telescope OnlyVerified Purchase
Amazon Customer
Reviewed in the United Kingdom on February 11, 2024
WARNING 1: this might be a begining of an expensive hobby! You will likely want accessories, filters, eyepieces, and maybe larger aperture for deep sky. Search for what you can see with a telescope (especially if you're interested in Nebulae/galaxies) if it's you first one to manage expectations.
WARNING 2: you won't see details and colours you see in pictures online including mine (except maybe for Moon). Cameras are far more sensitive and have longer exposures than our eyes. Search Orion Nebula or M81 through a 5, 8, 10 inch telescope for example to have an idea and compare with pictures.
Overall, I'm very happy with the telescope, optics seem quite good without noticeable chromatic aberrations, tracking is OK with options to fine-tune during use.
After using this, I'm curious to try something with a larger aperture to see more details in deep sky, but it doesn't mean I'm enjoying this telescope any less. For me it hits a good balance of power, ease of use, and portability. Though 8-inch aperture ones would probably last you much longer if you're going to get into the hobby more seriously, those are much more expensive and heavy.
You are paying a premium for goto functionality and compact design compared to some other 5-inch options, but I found goto to be very helpful especially at first.
This vs a Dobsonian:
Observing with a tripod is so much easier especially when what you're looking at is low. Optical tube is much more compact compared to Dob of comparable aperture and f-ratio, but later would probably be cheaper. As far as I can tell, a typical Newtonian reflector would be far less tolerant to collimation issues than this design. Learning with this is certainly easier.
If it's your first telescope - be prepared you won't see the colours and details you see in pictures online. Those are captured with cameras with longer exposures and higher sensitivity than human eyes and are heavily processed. This being said, I got this picture of Orion Nebula with an old unmodified DSLR through this telescope in a single exposure, no stacking or additional hardware.
What can you see?
Moon - amazing! Very bright, very sharp clear small details, no weird colours.
Planets - they appear about small pea-sized, rings of Saturn are clearly visible, as well as bands of Jupiter (in colour). You can get them bigger with additional eyepieces or Barlow lenses, but with ones I got (admittedly not the highest quality) I couldn't see more details - same thing just bigger and a little blurrier.
Deep sky objects - probably the coolest thing to photograph, but visually seeing it for the first time it's amazing how dim those are in general. I could see Orion Nebula and some other DSOs. In Orion Nebula I could see general shape, but no colour when observing from Peak District. You can probably see more from a darker site, but I haven't tested it. Overall the aperture is considered small for visual DSO observation, but I could see something.
Moon, snow, atmospheric conditions (e.g. turbulent air) will all affect your observation. Relative positions of earth to other planet also affects the details you see.
Mount, focuser etc:
I've read complaints about the mount not being sturdy enough online. It's definitely more shaky than a heavy Dobsonian, but for me it's perfectly useable. You do need to wait a couple seconds after adjusting focus for it to get stable, but you absolutely can get clear view and pictures after that.
GoTo depends on how good your alignment is and has couple clever features - there is a "precision goto" option in the menu where it first navigates to nearby easy to see object for you to correct error and then it goes to actual target.
Mount doesn't fold flat with optical tube as SE model does.
The tripod is a bit bigger than a typical photo tripod when folded.
If you're thinking of getting this and using mount for later optical tube upgrades, search for mount limits - you probably won't put much more onto it. I've read online people ignoring limits and putting 6se and even 8se on it, but it will be even shakier and I have no idea how long it will last if you did it and I doubt warranty will cover it.
You need to align red dot finder and the telescope before observation, otherwise finding anything is very difficult.
The mount is Alt-Az, as opposed to equatorial if it makes difference for you.
Images in this review
alexandre alpeyrie
On se fait vraiment plaisir !
Reviewed in France on November 11, 2023Style: 90 SLT MaksutovSet: Telescope OnlyVerified Purchase
Alex Birratrek
Ottimo acquisto
Reviewed in Italy on October 16, 2022Style: 127 SLT MaksutovSet: Telescope OnlyVerified Purchase
Alex Birratrek
Reviewed in Italy on October 16, 2022
Images in this review
Solo
Muy entretenido
Reviewed in Spain on October 4, 2022Style: 90 SLT MaksutovSet: Telescope OnlyVerified Purchase
Solo
Reviewed in Spain on October 4, 2022
En resumen, un poco más robusto en su base y algunos extras necesarios serían la compra perfecta para cualquiera que quiera pasar buenos ratos viendo planetaria y poco más. Para lo demás(cielo profundo) hay inevitablemente que subir el rango de precios. No queda otra.
Images in this review
