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ASI 120MM versus QHY5L-II

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#1 pippo

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Posted 24 January 2013 - 08:50 AM

Did anyone compare the two cameras: ASI 120MM and QHY5L-II ?

http://www.zwoptical...SI120/index.asp
http://qhyccd.com/en...qhy5-ii-series/

They both use the same sensor MT9M034.

Beside presence of the ST4 port in the QHY5L-II and the different ergonomics, shall we expect the same performances for planetary imaging?

#2 PiotrM

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Posted 24 January 2013 - 12:48 PM

ASI has better software support (is supported by FireCapture, while QHY5 not / not yet).

#3 Artyom

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Posted 27 January 2013 - 11:53 AM

QHY5L-II will get a native WDM-driver to use with FireCapture or SharpCap soon (QHY5-II already have it). And as far as I know a bit later the camera will get a direct support in FireCapture.

#4 pippo

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Posted 30 January 2013 - 02:51 AM

no other opinion?

Is the the software the only difference?

#5 Greg K.

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Posted 05 February 2013 - 02:49 PM

Good question - I'm considering getting one of these cameras but if I do I'll probably sell my Lodestar and use this as a guider instead. So the dilemma becomes better software vs. integrated ST4 port. I'd have to get a GPUSB to use with the ASI120MM.

#6 Gary BEAL

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Posted 05 February 2013 - 11:52 PM

Could you use Pulse Guiding to guide with? Reason I ask is that I did just that with my NEQ6/Lodestar as I felt the silly ST4 connection in the Lodestar was destined to give grief. Worked a treat, and no need for the GPUSB (which I have though).
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#7 CanaryMax

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Posted 06 February 2013 - 08:54 AM

The differences are minimal:

The QHY5LII as 1 1/4", can enter and change in the barlow maximum magnification. My powermate 5x with QHY5LII becomes a 4.3x to 5x.
Working at 320x240 QHY5LII has higher fps 200 vs 130. 320x240 in planetary rarely used, but for close binary stars is great to have more fps.
Autoguider port in QHY5LII.

The ZWO has more surface area and dissipates heat better.
The current advantage is undoubtedly ZWO able to use the firecapture.
The ZWO has more image formats to choose from.

I cant think of more differences, except these, price and accessories

#8 Kim Miau

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Posted 06 February 2013 - 12:32 PM

The differences are minimal:

The QHY5LII as 1 1/4", can enter and change in the barlow maximum magnification. My powermate 5x with QHY5LII becomes a 4.3x to 5x.
Working at 320x240 QHY5LII has higher fps 200 vs 130. 320x240 in planetary rarely used, but for close binary stars is great to have more fps.
Autoguider port in QHY5LII.

The ZWO has more surface area and dissipates heat better.
The current advantage is undoubtedly ZWO able to use the firecapture.
The ZWO has more image formats to choose from.

I cant think of more differences, except these, price and accessories

I've just tested QHY5L-II in FireCapture v2.1 testing edition obtained from QHYCCD forum. Please see the screenshot. So far the basic features are running smoothly and the ROI (fixed presets in EzPlanetary) can be customized freely in FireCapture. I heard they will include advanced features such as white balance adjustment and USB bandwidth control in FireCapture v2.2.

As far as I know, QHY5L-II supports 12-bit recording in EzPlanetary which is saved as 16-bit SER file. It's quite likely that 12-bit recording will also be supported in FireCapture v2.2.

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#9 Greg K.

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Posted 06 February 2013 - 01:19 PM

Could you use Pulse Guiding to guide with? Reason I ask is that I did just that with my NEQ6/Lodestar as I felt the silly ST4 connection in the Lodestar was destined to give grief. Worked a treat, and no need for the GPUSB (which I have though).
Gary


That would probably work, I do have a serial cable/usb adapter. I should give it a try.

Other than the fiddly cable connector (just TRY reconnecting that thing in the dark!) I do like guiding with the Lodestar, it works and it's simple, no other cables or adapters or ASCOM drivers to worry about. Don't even have to tell PHD to connect to the scope. If only the Lodestar was a better planet cam!

The QHY5L-II at least looks to have a proper RJ jack on it for the guider cable so that headache would be eliminated.

#10 Greg K.

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Posted 06 February 2013 - 01:25 PM

I've just tested QHY5L-II in FireCapture v2.1 testing edition obtained from QHYCCD forum. Please see the screenshot. So far the basic features are running smoothly and the ROI (fixed presets in EzPlanetary) can be customized freely in FireCapture. I heard they will include advanced features such as white balance adjustment and USB bandwidth control in FireCapture v2.2.

As far as I know, QHY5L-II supports 12-bit recording in EzPlanetary which is saved as 16-bit SER file. It's quite likely that 12-bit recording will also be supported in FireCapture v2.2.


Good info!

#11 CanaryMax

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Posted 06 February 2013 - 01:32 PM

Great news for QHY5LII, which has finally Firecapture support this camera, it seems they were waiting to put my answer...

#12 Kim Miau

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Posted 07 February 2013 - 06:02 AM


I've just tested QHY5L-II in FireCapture v2.1 testing edition obtained from QHYCCD forum. Please see the screenshot. So far the basic features are running smoothly and the ROI (fixed presets in EzPlanetary) can be customized freely in FireCapture. I heard they will include advanced features such as white balance adjustment and USB bandwidth control in FireCapture v2.2.

As far as I know, QHY5L-II supports 12-bit recording in EzPlanetary which is saved as 16-bit SER file. It's quite likely that 12-bit recording will also be supported in FireCapture v2.2.


Good info!

FYI, QHY just releases more information about using QHY5L-II and QHY5-II with FireCapture at their forum.

Something interesting is cooking up and we may see a working prototype during NEAF2013. Check out QHY "InterGuider".

#13 Greg K.

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Posted 14 February 2013 - 11:39 AM

Well I ordered a QHY5L-II mono. Since so many here are using the ASI, I had to be different. :lol: In fact I don't think I've seen any USA QHY5L-II users post yet.

Guess I'll be looking for deals on filter wheels/LRGB filters.

#14 LauraMS

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Posted 14 February 2013 - 05:07 PM

Same here :-) And a chance to play around with high fps values and bit depth in solar imaging...

#15 Kokatha man

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Posted 14 February 2013 - 07:16 PM

The differences are minimal:

The QHY5LII as 1 1/4", can enter and change in the barlow maximum magnification. My powermate 5x with QHY5LII becomes a 4.3x to 5x.
Working at 320x240 QHY5LII has higher fps 200 vs 130. 320x240 in planetary rarely used, but for close binary stars is great to have more fps.
Autoguider port in QHY5LII.

The ZWO has more surface area and dissipates heat better.
The current advantage is undoubtedly ZWO able to use the firecapture.
The ZWO has more image formats to choose from.

I cant think of more differences, except these, price and accessories


I received a new driver just over a day ago which boosts the ZW Optical's ASI120MM framerate above these figures with very significant fps increases in nearly all of the many other resolutions selectable.....I am about to run tests for Sam but I am sure you will hear more from Sam (or me, or others) in the very near future! :)

#16 guyroch

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Posted 08 March 2013 - 11:31 AM

I'm resurrecting this thread because I'm looking at both these cameras (mono) for mainly guiding. I may use it for planetary but I already have a dedicated mono PG Blackfly for planetary.

The QHY5L-II seems more appropriate because of it has a built-in guide port.

In terms of sensitivity, has anyone did a side-by-side comparison?

I already have a Lodestar and for the most part it's great but that puppy has too much noise for my liking. The new guide cam is for a second (grab and go) setup.

I'm also considering the ST-i but if I can get the ASI120MM or QHY5L-II for half the price of the ST-i then the choice is obvious... but which one... ASI120MM or QHY5L-II?

Thanks

Guylain

#17 jonbosley

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Posted 08 March 2013 - 12:21 PM

I just went through the same process, I decided on the QHY5L-II which, now gives me the option of selling my Lodestar. The QHYL-II can now capture in 14bit, the ASI is stuck on 8bit only. Plus the Firecapture argument is over as both cameras can use it. Each new version of QHY's EZPlanetary software makes improvements, the latest now has SER unlimited capture, histogram, focus support with more improvements on the way-its better software then the Imaging Source IC Capture. It took 2 days from placing the order to getting the camera from Astrofactors.
When you think about it its a no brainer.

Jon

#18 Kim Miau

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Posted 08 March 2013 - 12:48 PM

I just went through the same process, I decided on the QHY5L-II which, now gives me the option of selling my Lodestar. The QHYL-II can now capture in 14bit, the ASI is stuck on 8bit only. Plus the Firecapture argument is over as both cameras can use it. Each new version of QHY's EZPlanetary software makes improvements, the latest now has SER unlimited capture, histogram, focus support with more improvements on the way-its better software then the Imaging Source IC Capture. It took 2 days from placing the order to getting the camera from Astrofactors.
When you think about it its a no brainer.

Jon

QHY5L-2 supports 12bit only. ;)

It also supports HDR imaging which captures a 20-bit equivalent data stored in 12-bit format.

#19 guyroch

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Posted 08 March 2013 - 12:51 PM

I just went through the same process, I decided on the QHY5L-II which, now gives me the option of selling my Lodestar. The QHYL-II can now capture in 14bit, the ASI is stuck on 8bit only. Plus the Firecapture argument is over as both cameras can use it. Each new version of QHY's EZPlanetary software makes improvements, the latest now has SER unlimited capture, histogram, focus support with more improvements on the way-its better software then the Imaging Source IC Capture. It took 2 days from placing the order to getting the camera from Astrofactors.
When you think about it its a no brainer.

Jon


Thanks Jon... that pretty much made my day.

Did you tried it yet? Compared to the Lodestar how does it perform?

Guylain

#20 jonbosley

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Posted 08 March 2013 - 02:59 PM

Guylain,

It arrived this week and surprise, surprise its raining. I just did some indoor testing to make sure I could reach the max fps in each resolution on my laptop and that PHD can read it, which it can. I was planing on doing some guiding with it this weekend but that's not going to happen, amazingly its smaller & lighter then the lodestar.

#21 guyroch

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Posted 08 March 2013 - 03:16 PM

Well, I just pulled the trigger and bought a QHY5L II Mono from Astrofactors; first time purchasing from them.

Shipping to Canada was only $12 ~ pretty good compared to OPT which is about $34.

Guylain

#22 Tellescópio

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Posted 08 March 2013 - 06:29 PM

Great topic, in a most famous astronomy forum in Brazil we exactly discuss about it, please check it out: http://www.cosmobrai...hp?f=47&t=17777
The language is in portuguese, maybe a google translation works well if you do not understand.

QHY5L-II now working full on FireCapture. The developers announce the follow steps:

"Hi all,
This is the very very last ;-) 2.2beta version including QHY 5L-II support.

If you have an existing 2.2beta do the following:
- replace FireCapture.jar in your \lib subfolder with this version: FireCapture.jar (http://firecapture.w...FireCapture.jar)
- extract the files from the following archive into your 2.2beta folder: QHYCCD_Support_beta40.zip (http://firecapture.w...port_beta40.zip)

If you don't have a 2.2beta use the following self-extracting archive: FireCapture_22beta40.exe (http://firecapture.w...re_22beta40.exe)

Start FC using the "FireCapture_QHY" shortcut. For the unlikely case that your QHY 5L should start see the additional controls in the gamma drop-down box (right-click). Check "HighSpeed" for fast read out.

In case of errors send log.txt and all files in the \log folder.

Non QHY users don' t need to upgrade. The only changes beside QHY support are as follows:
- fixed fliped image for ASI camera
- improved histrogram display for color cameras"

#23 Kokatha man

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Posted 08 March 2013 - 06:36 PM

For the unlikely case that your QHY 5L should start see the additional controls in the gamma drop-down box (right-click).


Hi T - I take it from this in your post that the QHY5L-11 doesn't have adjustable blackpoint/brightness control then..?

#24 Space Cowboy

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Posted 09 March 2013 - 07:55 AM

The QHY5L-ll has grabbed my attention as I was considering the ASI 120MM. What concerns me about the ASI is the image scale being too large for use with my trusty 5x powermate in my f4.8 Dob.
I understand the QHY5L-ll has a 1.25" body which fits directly inside the focuser therefore producing a smaller image scale. After a quick google search I saw someone mention it producing 4.5-5x with a 5x powermate which sounds ideal for me?

#25 pippo

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Posted 09 March 2013 - 03:43 PM

Could someone post the fps as a function of the ROI available on the QHY5L-II under Firecapture?

Can we compare such fps with those available on the ASI?

Thanks

Francesco






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