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Celestron

Celestron NexStar 5SE

Versatile five-inch SCT that excels at planets while remaining genuinely portable.

125mm aperture1250mm focal lengthf/10Schmidt-CassegrainGoTo (Computerised)GoToIntermediate
Celestron NexStar 5SE telescope

From the community

What owners say

Based on 25 Cloudy Nights discussions

What they love

  • Sharp views on planets, especially Jupiter showing cloud bands, loops, ovals, and the Great Red Spot
  • Good lunar observation showing thousands of craters and detail
  • Excellent for double stars and asterisms like the Pleiades
  • Reliable GoTo functionality from the hand controller
  • Compact and portable for a 5-inch scope

What caught them off guard

  • !Limited ability to see faint DSOs from light-polluted suburban locations
  • !Narrow field of view compared to refractors, limiting observation of large objects
  • !The mount becomes overloaded when mounting cameras for astrophotography
  • !Poor wedge implementation on SE mount makes polar alignment and astrophotography challenging
  • !Not suitable for high-quality DSO astrophotography without significant additional investment

Top targets reported by owners

What you'll see

Planet

Jupiter

shows cloud bands, loops, ovals of white and dark brown, barges, Great Red Spot (appears more pink t…

Planet

Saturn

spectacular ring system, Cassini Gap visible, B gap glimpsed in good seeing, planet shows as tinted…

Moon

Moon

thousands of craters visible, craters within craters, excellent detail

Nebula

Orion Nebula

viewable and satisfying from light-polluted areas

Worth knowing before you buy

The focuser accepts standard 1.

The SE mount (shared with 4SE) becomes overloaded when adding cameras or heavy accessories like binoviewers, requiring users to upgrade to a separate equatorial mount for imaging purposes.

The included tripod legs are not sturdy enough to handle the optical tube's weight without significant vibration that takes 5-6 seconds to settle after the slightest touch.

Frequently asked

Questions from owners

Sourced from Cloudy Nights discussions.

How much can I actually see with the 5SE from suburban/light-polluted skies?
Multiple observers report that from light-polluted areas like suburban San Diego or Los Angeles, the 5SE shows the Moon and planets well, but DSOs are limited to brighter Messier objects like Orion Nebula and Andromeda. One owner with a 4SE in Los Angeles could only reliably see Orion Nebula and Andromeda as a faint fuzzball over years of use; stepping up to an 8-inch Evolution revealed vastly more DSO detail.
Is the 5SE mount stable enough for astrophotography?
Multiple users report the SE mount is adequate for visual observing but becomes overloaded when adding a camera, counterweights, and accessories. One experienced observer upgraded from a 5SE to a CG5 equatorial mount specifically because the SE mount was insufficient for imaging.
How does the 5SE compare to the 4SE and 127 Mak for my needs?
The 5SE offers better aperture than the 4SE (more DSO light grasp) and faster focal ratio (F10 vs F13) for astrophotography, plus it accepts focal reducers that the 127 Mak cannot use effectively. However, the 127 Mak provides sharper, higher-contrast views on planets due to its optical design, though with a narrower field of view and heavier weight.
Can I use 2-inch eyepieces on the 5SE to get wider fields of view?
While the 5SE can technically accept a 2-inch diagonal and focal reducer, real-world testing shows vignetting and aperture limitations severely restrict actual field of view gains. One detailed observer tested various eyepieces and found practical maximum fields of view around 1 degree for the 5SE even with larger eyepieces, not the 2+ degrees calculated theoretically.
Is the 5SE good for a beginner who wants to do observing, astrophotography, and DSOs all at once?
Multiple experienced observers warn that no single small scope excels at all three simultaneously—visual DSO observing, planetary imaging, and DSO astrophotography each have conflicting requirements. One frustrated beginner found that after months of trying, the 5SE/6SE with a wedge could do limited planetary imaging but was awkward for DSO AP and not optimal for wide-field visual.
Will the tripod and mount vibration be a problem on my balcony?
Multiple observers report that balcony observing introduces vibration from foot traffic and structural flex, especially if the balcony is wooden rather than concrete. One user found that moving from a balcony to a lawn below it significantly improved image steadiness and reduced thermal issues.

Full Specifications

Optics

Aperture125mm
Focal Length1250mm
Focal Ratiof/10
Optical DesignSchmidt-Cassegrain
CoatingsStarBright XLT fully multi-coated on all optical surfaces

Mount & Tracking

Mount TypeGoTo (Computerised)
GoTo (Computerised)Yes
TrackingYes
Tracking MotorSingle axis (alt-az)

Focuser

Focuser Size1.25"
Focuser TypeSCT rear-cell focuser

Physical

OTA Weight2.7kg
Total Weight (with mount)9.8kg
Tube Length330mm
Tube MaterialAluminium

Included Accessories

Eyepieces25mm Plössl
Finder ScopeStarPointer red dot finder
DiagonalNo