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ZWO ASI533MM Review + Bonus Tutorial

The ASI533MM is a great monochrome camera for both beginners and advanced astrophotographers. The small sensor has no amp glow, and magnifies the focal length of any optic by a factor of 2.7, making this a perfect camera for smaller telescopes!

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I've been using the ASI533MM on every clear night since May 2022, and this camera has done a phenomenal job!  I love how well the sensor performs, with no amp glow and a high Quantum Efficiency  This makes narrowband work much easier from my light polluted backyard!  In addition, this camera pairs perfectly with my SpaceCat 250mm telescope.  Thanks to the 2.7x crop factor of this sensor, I can fill the frame nicely with most nebulae and galaxies.


My only real problem with this camera is the square sensor.  This is fine for most people, but its not ideal for video (with a 16x9 ratio).  Also, the camera resolution is ~3000 x ~3000 pixels, which is a bit low.  However, I haven't noticed any real quality loss when cropping in. 


All things considered, I'd highly recommend the ASI533MM for anyone looking for a monochrome camera with a small sensor!


You can purchase the ASI533MM here:

https://agenaastro.com/zwo-533mm-cooled-monochrome-astronomy-camera.html?aw_affiliate=eyJjYW1wYWlnbl9pZCI6IjQiLCJ0cmFmZmljX3NvdXJjZSI6IllvdVR1YmUiLCJhY2NvdW50X2lkIjoxM30


I also highly recommend getting the AM5 go-to mount.  It's a game-changer for astrophotography:

https://agenaastro.com/zwo-am5-harmonic-drive-equatorial-mount-and-tripod.html?aw_affiliate=eyJjYW1wYWlnbl9pZCI6IjQiLCJ0cmFmZmljX3NvdXJjZSI6IllvdVR1YmUiLCJhY2NvdW50X2lkIjoxM30


00:00 - Intro

00:26 - Price & Filter Options

01:39 - Sensor Size & Crop Factor

03:20 - No Amp Glow!

04:06 - Cooling System

04:49 - Control the 533MM

05:30 - Photos 

06:36 - Final Review

08:07 - Orion & Star Lore

11:21 - Tutorial - Stacking in DSS

19:31 - PixInsight Workflow

26:56 - Photoshop Workflow

34:00 - Outro

 

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All Comments: (1)
  • If you're a beginner, you want the truth. A 1" sensor does not give Peter's Redcat effectively 750mm zoom. Peter knows that full well. He even slips in a mention of field of view without providing the necessary context. The sensor size has zero effect on focal length. Period. Thus, it has no effect on subject magnification. Period. And, therefore, no effect on zoom. Period. What sensor size does is affect the field of view. That means, it sees less of what surrounds the subject in the center of the telescope or lens. What's in the center is the same size regardless of sensor size. Thus, the same magnification and the same zoom. A small field of view can be a problem. Andromeda Galaxy on a Redcat 51 with a 1" sensor might not be able to see all of it. An APS sensor, more likely. A full frame sensor, even more likely. Andromeda Galaxy will have exactly the same magnification/zoom with all three sensors. It's just that the different size sensors are seeing more or less of the same circle of light from the telescope (or lens).
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