Best Telescope for Astrophotography
The best telescope for astrophotography for most beginners is the Sky-Watcher Evostar 80EDX APO Doublet Refractor at $750, an 80 mm short refractor that pairs cleanly with an entry level equatorial mount, because mount stability and focal ratio matter far more for imaging than raw aperture does.
The single most expensive mistake a new astrophotographer makes is buying aperture. A camera sensor integrates light over minutes and stacks dozens of exposures into one image, recovering faint signal that an eye at the eyepiece never could in a single glance. That changes the whole calculus: what actually limits an imaging result is whether the mount tracks the sky accurately for the length of a sub-exposure, and how fast the optical system delivers light to the sensor, not how many inches of glass sit at the front of the tube. The honest answer for most people starting out is a small, short refractor on a mount built to track it well, not the biggest telescope the budget allows.
Why does aperture matter less for astrophotography than for visual observing?
Visually, aperture sets a hard ceiling: a 76 mm telescope cannot show you what a 203 mm one can, because the eye only gets one instant of light at a time. A camera breaks that rule. A single exposure gathers photons for anywhere from thirty seconds to five minutes, and a night of imaging stacks dozens of those exposures, called subs, into one final image. Signal grows with total integration time and noise grows with the square root of the number of subs, so stacking 16 subs improves signal-to-noise by roughly 4x, and stacking 64 improves it by roughly 8x. None of that arithmetic cares how wide the mirror is. It cares whether every one of those subs is sharp, which is a question about the mount, not the telescope.
This is why an 80 mm refractor on a mount that tracks cleanly for three to five minutes routinely out-images an 8 inch telescope on a mount that trails after ninety seconds. The bigger telescope's extra light gathering is real, but it is worthless if every sub has to be thrown away.
What does focal ratio actually control?
Focal ratio is focal length divided by aperture, and for imaging it behaves like a speed setting on the whole optical system. Exposure time needed to reach a given signal level on an extended object scales with the square of the focal ratio, so the EdgeHD 9.25 inch at roughly f/10 needs about 1.8x the exposure time of the Evostar 80EDX at f/7.5 to gather the same signal on a faint nebula, aperture aside. Use our focal ratio calculator to check any telescope and camera combination before you buy.
This is also the real argument for the smart telescope category. The ZWO Seestar S30 Pro runs at roughly f/ 5, a genuinely fast system in a sealed 30 mm aperture, and it stacks its own exposures onto your phone in real time. It answers a different question than the rest of this page, because there is nothing to look through, but as a fast, small, mount-included imaging system it earns its place here.
Which telescope should you actually buy, by budget?
Present these as an imaging ladder rather than a single winner, because the right choice depends on whether you already own a mount and how much workflow you want to manage on a clear night.
Astrophotography telescopes by budget
SVBONY SV503 80mm ED Refractor
The cheapest ED doublet worth owning, and it ships with a field flattener, which is a real accessory that usually costs $200 on its own. Focuser tolerances are looser than the Sky-Watcher, so expect to shim it if you load a heavy camera train.
Best for: Entering deep sky imaging without a four figure tube
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ZWO Seestar S30 Pro Smart Telescope
A sealed smart telescope that stacks its own exposures and hands your phone a finished image of a nebula in ten minutes. It is not an eyepiece instrument and there is nothing to look through, so it answers a different question than every other scope on this page.
Best for: Someone who wants the photographs and does not care about looking through anything
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Sky-Watcher Evostar 80EDX APO Doublet Refractor
An ED doublet refractor is the standard first serious imaging telescope: short, light, forgiving of mount error, and free of the diffraction spikes and collimation duty a Newtonian brings. Eighty millimetres is small for visual use and close to ideal for wide field imaging.
Best for: A first dedicated deep sky imaging tube
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Celestron Advanced VX 8 inch EdgeHD
A flat field 8 inch EdgeHD tube on a German equatorial mount, which is the first configuration in this list that can do long exposure deep sky imaging without a field rotation problem. It is also the first one that is a project rather than a purchase.
Best for: Deep sky imaging from a fixed observing site
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Celestron EdgeHD 9.25 inch Optical Tube
A tube only purchase, which means it assumes you already own a mount rated for roughly 21 lb of optics plus a camera train. The 9.25 inch is widely held to be the sweet spot of the EdgeHD line, and it needs a mount that costs as much again.
Best for: An existing equatorial mount owner buying a final visual and imaging tube
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The SVBONY SV503 is the cheapest ED doublet worth owning and ships with a field flattener, a real accessory that usually costs $200 on its own; expect looser focuser tolerances than the Sky-Watcher, so shim it if you load a heavy camera train. The Seestar S30 Pro removes the entire workflow question by handling tracking, focusing and stacking itself. The Evostar 80EDX is the standard first dedicated imaging tube: short, light, forgiving of mount error, and the reason it sits at the top of this page rather than a bigger telescope. At the top, the Advanced VX 8 inch EdgeHD and the EdgeHD 9.25 inch tube step up to a flat field, long focal length system capable of galaxy and planetary nebula detail a small refractor cannot reach.
One more tube belongs on this shortlist even though it does not sell through Amazon: the William Optics RedCat 51 , a genuinely well regarded 51 mm, very fast imaging refractor sold mainly through specialty dealers such as High Point Scientific, Agena and OPT. It is worth comparing directly against the Evostar 80EDX if you are already comfortable ordering from those retailers; the link here goes to a scoped Amazon search rather than a fabricated listing, because that is the honest way to point at a product this site cannot verify a real Amazon ASIN for.
Who should not buy the expert tier?
Anyone without a repeatable setup site, and anyone who has not spent at least a season doing visual observing first, should not buy the Advanced VX 8 inch EdgeHD or the EdgeHD 9.25 inch as a first telescope. Long focal length imaging on a German equatorial mount is a project every session, not a purchase you make once: polar alignment, guiding, dew control and a camera train all have to come together in the same window of clear, dark sky. A setup that takes forty five minutes to get imaging is a setup you will use less often, and a beginner without practiced muscle memory for that routine will lose entire clear nights to troubleshooting instead of imaging. Learn the sky and the workflow on a small refractor, then step up once the routine is fast and automatic.
The price gap reinforces the same point. The EdgeHD 9.25 inch tube alone costs roughly 4.1x the Evostar 80EDX, and that price does not include the equatorial mount it needs, which typically runs another four figures. That is a serious commitment of money to make before you know whether the nightly workflow suits you.
How much telescope do you actually need for deep sky imaging?
| Telescope | Aperture | Focal length | Focal ratio | Price |
|---|---|---|---|---|
| SVBONY SV503 80mm ED | 80 mm | 560 mm | f/7 | $429.99 |
| ZWO Seestar S30 Pro | 30 mm | 150 mm | f/5 | $699.00 |
| Sky-Watcher Evostar 80EDX | 80 mm | 600 mm | f/7.5 | $750.00 |
| Advanced VX 8 inch EdgeHD | 203 mm | 2032 mm | f/10 | $2,599.00 |
| EdgeHD 9.25 inch OTA | 235 mm | 2350 mm | f/10 | $3,099.00 |
The EdgeHD 9.25 inch is a tube only purchase and assumes you already own a mount rated for roughly 21 lb of optics plus a camera train. See our telescope mount guide before pricing it as a complete system.
Do reflectors or refractors make more sense for imaging?
Refractors dominate the entry to mid tier of this list for a practical reason: they need no collimation, produce no diffraction spikes from a secondary mirror spider, and their optical design is naturally well corrected across a wide, flat field once paired with the matching field flattener. A Newtonian reflector needs collimation checked before every serious imaging session, because a mirror even slightly out of alignment shows up as elongated stars in a corner of the frame, not as a subtle softness. Schmidt-Cassegrain and EdgeHD designs, the two telescopes in the expert tier here, sit between the two: closed tubes that rarely need collimation touched, at the cost of a slower focal ratio and a longer cool-down before the optics settle to ambient temperature.
What mount does an imaging telescope actually need?
Every telescope on this page needs a mount that tracks the sky in two axes and holds guiding accuracy for the length of a single sub-exposure, which a simple alt-azimuth mount cannot do without introducing field rotation into a long exposure. The Evostar 80EDX and SV503 both weigh little enough to ride comfortably on an entry level equatorial such as the Sky-Watcher Star Adventurer GTi; the EdgeHD tubes need a genuinely heavy duty equatorial rated for at least twice their own weight once a camera, guide scope and cabling are loaded on. Our best telescope mount guide and best star tracker guide cover the mount side of this decision in full, including the derating rule that halves a mount's rated payload for imaging work.
How long should a single exposure be?
That depends on your mount's tracking accuracy, your focal length, and whether you are guiding. Untracked, a camera and lens alone are limited to a few seconds before stars trail; a tracked mount without autoguiding typically holds sixty to ninety seconds clean at short focal lengths; autoguiding extends that to three to five minutes routinely, which is the range most deep sky imagers settle into with the telescopes on this page. Our exposure time by focal length chart and how to start astrophotography guide walk through picking a starting exposure length for your actual setup.
What should your first complete imaging setup look like?
Our expert telescope setup build lays out a complete parts list for a deep sky imaging rig built around a small refractor, an equatorial mount with autoguiding, and a dedicated astronomy camera, priced as a whole system rather than one product at a time. It is worth reading in full before ordering anything on this page, because the mount and camera line items usually cost more than the telescope itself, and skipping either one is the single most common way a first imaging season stalls before it produces a finished image.
How many clear nights does a first deep sky image actually take?
More than one, almost always. A single night on a bright, well placed target such as the Orion Nebula can produce a recognizable result with an hour or two of stacked subs, but the images that look genuinely polished usually represent three to six hours of total integration time, gathered across two or three separate nights once clouds, the Moon and simple scheduling are accounted for. Treat the first session as a calibration exercise rather than a finished result: confirming focus, framing and guiding accuracy matters more on night one than the final image does, and a short, technically clean first session sets up a much faster second one.
Splitting a target across nights works because stacking software aligns and combines subs regardless of which night they were captured on, as long as the framing stays close to consistent between sessions. This is part of why a fixed or repeatable setup site matters so much for the expert tier on this page: an EdgeHD on an equatorial mount that has to be fully re-polar-aligned from scratch every session loses time to setup that a semi-permanent pier or a marked driveway spot would save.
What does a complete first imaging setup actually cost?
The telescope is usually the smallest line item. Budget for the tube, an equatorial mount rated with real imaging headroom under our mount payload calculator, a dedicated astronomy camera or a modified DSLR, a laptop or tablet to control the session, and cabling to tie it all together. For the Evostar 80EDX specifically, pairing it with an entry level imaging equatorial and a basic cooled camera typically lands the complete kit in the range of $1,800 to $2,200 once every part is accounted for, well beyond the $750 price of the tube alone. The EdgeHD tubes at the top of this page cost more up front and also need a heavier, more expensive mount underneath them, which is the real reason their total system cost runs several times the Evostar's rather than a simple multiple of the tube price.
Related reading
- Best telescope mount, why the mount is the real purchase decision
- Best star tracker, for camera-and-lens imaging before any telescope
- Expert telescope setup, a complete priced imaging build
- Focal ratio calculator, check any telescope's imaging speed
- How to start astrophotography, the full beginner workflow
- Exposure time by focal length, a reference chart for sub length
We review them on their own too, in full detail: the Explore Scientific ED80 and the ZWO ASIAIR Plus that runs the rig.
Frequently asked questions
What is the best telescope for astrophotography for a beginner?
The Sky-Watcher Evostar 80EDX APO Doublet Refractor at $750. An 80 mm ED refractor is short, light and forgiving of mount error, with no diffraction spikes and no collimation duty. It pairs with an entry level equatorial mount and produces clean, round stars far more reliably than a bigger, slower telescope on the same budget of mount.
Do I need a big telescope to take good astrophotos?
No, and this is the most common expensive mistake in the hobby. A camera integrates light over minutes and stacks many exposures together, recovering faint signal an eye at the eyepiece never could. Mount stability and focal ratio decide whether those exposures come out usable far more than aperture does, which is why small refractors dominate deep sky imaging.
What matters more for astrophotography, aperture or the mount?
The mount. An 8 inch telescope with a mount that cannot track accurately for two to three minutes cannot use its aperture at all, because every sub-exposure trails into an unusable smear. An 80 mm refractor on a mount that tracks cleanly for five minutes produces usable data every single sub, and stacking dozens of clean subs recovers more signal than one telescope with a bigger mirror ever will.
What focal ratio is best for deep sky imaging?
Faster is generally better for extended, faint targets, with f/5 to f/7 a common sweet spot for wide field nebulae and galaxies. Exposure time for a given signal level scales with the square of the focal ratio, so an f/5 system gathers the same signal roughly four times faster than an f/10 system of the same aperture, which is one reason SCTs are usually reserved for planetary work.
Is the William Optics RedCat 51 worth buying instead?
It is a genuinely well regarded small imaging refractor, and it does not sell through Amazon, so this page links it to a scoped search rather than a fabricated product page. If a 51 mm, very fast aperture appeals to you and you are comfortable buying through a specialty dealer such as High Point Scientific or OPT, it belongs on the same shortlist as the Evostar 80EDX.
Who should not buy an 8 inch EdgeHD for astrophotography?
Anyone without a repeatable setup site, and anyone who has not spent at least a season doing visual observing first. An EdgeHD on an equatorial mount demands polar alignment, guiding, and a camera train every session, and it punishes an unpracticed setup with hours of wasted clear sky. Learn the sky and the workflow on a small refractor before committing to the largest, heaviest option on this page.
How we choose: we compare published manufacturer specifications, optical figures we can verify, and reviews from owners who have used the equipment under real skies. We do not test gear in person. Never point any telescope, finder or binocular at the Sun without a certified full-aperture solar filter fitted over the front of the instrument.
Recording your own eyepieces, exit pupils and sessions? The Observing & Astrophotography Planner is the paid version of these pages: 8 printable worksheets you fill in with your own numbers, plus the full PDF, $29.