If it is a USB2 camera then it is an ASI120MM, not an ASI120M-S because that’s USB3. Please search this forum because there were several topics with the details for how to flash the camera. FYI I tried with mine and it didn’t work. In the end I bought a USB3 version and that works like a charm.


Clear skies, Wouter

Hi there!

I managed to flash the cam. It is recogniced now by the system.
But there are some strange problems still ocuring.

1. Camera not working on my mac with ASICAP, the program ZWO gives us. I think the cam is not recogniced right, because it writes ASI 120MC, but the cam is a 120MM

2. In INDI, the cam is working and recognized right, but all pictures i take are just plain white, like totally overexposed. even if i close the guiding scope!

Some ideas?

I am sure the answer is yes, but did you flash with the correct image? You need to use the mm image, not the mc image.

I checked that today in the morning, and you are right, it was the wrong image. Flashed the right now, but unfortunately, no change. I still get a plain white picture.

Can i somehow check if the picture is overexposed, or just wrong?




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What happens if you cover the lens or opening above the chip? Does the image become darker or black?

Tried that, but still plain white.

BUT:

I had another go now in the evening, and tried around a bit with the settings. I set the exposure setting in the ccd module to the shortest exposure. And now i saw a picture! So the problem was extreme overexposure. Unfortunately in the guiding module, the shortest exposure is 0.02sec, and there, the picture is still white.

Maybe i try at night today.

What i know now, is that the cam works. Its just overexposed...

You may have an ASI120mc. After a year I just discovered that mine is an asi120mc even though the box and camera body say ASI120mm. However I believe they have the same firmware update. You’ll have to investigate with zwo support site. Should work if you get the right update.

I have a asi120mm (the old one, not -s), it can recognize by indi/linux, but can't capture image.
but the same camera worked well on indi/macos.

What is EXACTLY the problem? Does it not capture at all, or is it capturing, and teh picture is black or white or something else?
Did you flash it? `cause before flashing, it did not work at all for me...

[/quote]You may have an ASI120mc. After a year I just discovered that mine is an asi120mc even though the box and camera body say ASI120mm. However I believe they have the same firmware update. You’ll have to investigate with zwo support site. Should work if you get the right update.[/quote]

On the invoice it is called "ZWO ASI 120MM-SW"
On the cam there is written ZWO ASI 120MM

I accidentally flashed BOTH firmwares, first the MC, then the MM. Both worked.

So the cam now works on Windows with ASICAP, and on LINUX with INDI. But it does NOT work proper on my iMac with ASICAP.
Only when i set the picturesize to 320Xanything i see a livepicture

Tried the cam at night. Seems that daylight is only too much for it, thats why i always got plaine white pics. The other issue has something to do with bandwith... but thats not neccesarry. Anyway. Cam works, problem solved..

cheers Niki

Yes I have the asi120mmS the mono USB 3 version. I have been using it as my guide camera for a year or so now in KStars with phd2. I love it because it is reliable and as you observed, extremely sensitive! If you want to take shots in the daytime with a camera lens, you will need to reduce the exposure time to milliseconds or even microseconds. In the capture module of Ekos, you can use exposure times like that. I have also tried using it as my main imager with an h alpha filter. For a cheap camera it can do some amazing work. I liked it so much I just got an asi 224 color for quick color images of nebulas. This evening I found that even with the color version, I can detect the North American nebula in a half second exposure. It rocks.