I've been considering buying the ASI533MC Pro for a while now (upgrading from a mirrorless slr-style camera). The 533 seems to fit well with my 5" sct and overall seems like a great upgrade.
That said, I've been eyeing the Classifieds now for a while, and I've noticed like 1-2 ASI533MC Pro's being listed for sale like every single day (it seems). Many still fairly new.
That got me wondering if it would be a mistake to go with the ASI533MC Pro? Why does it seem like everyone is selling them? Do they all come to find out it's a mistake to buy one?
Does it only tend to a transitioning period and people get bored/outgrow it right away? I was really wanting to get one, but now I'm having second thoughts due to the amount I'm seeing for sale.
What do you all think?
Side note for context:
I am wanting to get some good DSO images of targets that will fit into the view of a 5" SCT with the ASI533MC Pro. (I'm fine with doing mosaics for larger targets.) I also have a f/6.3 reducer for larger objects. Additionally, I want to do some EAA as well. I also have a ASI224 and OAG, and have a x2 barlow (really only use the barlow for planetary). I've had success with the APC-C mirrorless camera I had, but seems like that sensor is too big for the 5" SCT anyways (at least with the reducer on)
Because about a zillion people bought a 533, and some small fraction of them want to make a change, most likely for reasons unrelated to the quality of their 533. It's absolutely nothing to be concerned about.
Worry about your mount instead. That's far more likely to be a problem for you.
And, if you are new to DSO imaging, worry about the difficulty of learning the hobby with a long, heavy, slow SCT. A large fraction of beginners (most of them?) who start with an SCT regret that decision. These are NOT outliers, they're typical.
"I regret spending the first 6 months trying to learn imaging with an 8" Edge, with that scope it was a losing effort. Fortunately got a nice little refractor, and not only have the quality of my images improved but I'm actually enjoying the process of learning how to do it!"
"I tried to learn DSO imaging with the scope I already owned, a Nexstar 6se. I didn't start making real progress until I bought a refractor and EQ mount. The SCT is difficult to learn on; you'll learn much much much much faster on a short refractor, and have better images to show for your efforts. "
"I put together a video of my imaging rig along with some info on how I went from years of failure trying to image with a long focal length SCT, to achieving success on my first image."
"As someone who also started with an SCT I can tell you the two best investments I made in AP were a good mount and smaller refractor. "
Those are real issues. A few 533 ads are not.
Your setup is far better suited to EAA, and planetary/lunar imaging. Learning DSO imaging with it is similar to trying to learn to build fine furniture while hitting nails with a Crescent wrench. It's the wrong tool for the job.
Edited by bobzeq25, 02 October 2023 - 01:04 AM.