Planetary Camera vs DSLR: Which for Astrophotography?
A planetary camera shoots thousands of small frames per session so software can stack the sharpest moments through the atmosphere, which is how good planetary images are made. A DSLR has a large sensor suited to wide deep sky work and is a camera you already own. Buy the planetary camera for the moon and planets; use the DSLR for nebulae, galaxies and wide fields.
At a glance
| ASI662MC Color Planetary Camera | T2 T-Ring and Adapter for Canon EOS | |
|---|---|---|
| Frame rate | Very high | Low |
| Sensor size | Small | Large |
| Planets | Excellent | Poor |
| Deep sky | Limited field | Good |
| Cost to start | Camera purchase | An adapter if you own the DSLR |
| Needs a computer at the telescope | Yes | No |
Choose the ASI662MC Color Planetary Camera if…
You want detail on Jupiter, Saturn and the moon. Lucky imaging works by capturing far more frames than you need and keeping only the sharpest, and that requires a high frame rate a DSLR cannot deliver.
Check ASI662MC Color Planetary Camera on Amazon
Choose the T2 T-Ring and Adapter for Canon EOS if…
You own a DSLR and want to point it at the Orion Nebula. A T-ring costs very little and turns your telescope into a very long lens, which is the cheapest possible entry into deep sky imaging.
Check T2 T-Ring and Adapter for Canon EOS on Amazon
Related
Comparison based on published manufacturer specifications and the general consensus of owner reports. We have not tested these products side by side. Confirm current specifications and prices before buying. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
We review them on their own too, in full detail: the Canon EOS Rebel T7 and the ZWO ASI183MC Pro.
Frequently asked questions
Why do planetary images need thousands of frames?
Because the atmosphere blurs the view constantly and unpredictably. Capturing thousands of frames means some are taken during moments of steady air, and stacking software keeps those and discards the rest.
Do I need a tracking mount for imaging?
For anything beyond the moon, yes. Deep sky exposures are long enough that the sky's rotation smears stars within seconds at typical focal lengths.
What is the cheapest way to start?
A phone holder on an eyepiece for the moon, which costs almost nothing and works surprisingly well. It is a good way to find out whether you enjoy imaging before spending real money.
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.