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ASI 290MC/MM yet another new camera from ZWO!

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#51 waitingForTheMiracle

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Posted 02 May 2016 - 11:07 AM

Jim,

 

the back focus depends on the lens mount. Wikipedia has a table.



#52 Astrojedi

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Posted 02 May 2016 - 01:26 PM

 

Thanks for posting Jim!  The 290 mono is a great sensor with the read noise of the 224 but higher sensitivity...  These new CMOS cameras are breaking all the rules!  And the prices are great too!!

 

jim could you take a couple of dark frames with 30s, 60s and 120s exposurss?

 

Al

Hi Al,

 

I've posted some darks on my Flickr account:

 

https://www.flickr.c...157667627835182

 

cheers,

 

Jim T.

 

 

Very clean darks... looks very promising



#53 easybob95

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Posted 03 May 2016 - 01:01 AM

Alain,

 

A straight FD lens to T-mount would be the simplest, if you can find one.

 

Alternatively, you could use a Canon FD lens to Canon EF adapter, the type without glass that can't focus to infinity. (Example, although you have no use for the electronic connectors.)

 

You then have an EF-mount and can use a short T-adapter for EOS (example). It needs to be short since the backfocus for FD lenses is 2mm shorter than for EF lenses. Then you fill up with a T-mount filter holder and extension tubes so the total distance from the FD mount to the sensor is 42mm.

 

Hello,

many thanks for this idea. You must be right, FD lens to T mount does not exist from what i see.

 

Alain



#54 Relativist

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Posted 05 May 2016 - 09:57 AM

Jim, any further testing on the 290? I'm hoping your going to try it with Astrolive USB once it's released.

#55 jimthompson

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Posted 05 May 2016 - 10:04 AM

Nothing more to report yet Curtis.  We've had some rain and cloud this week.  Perhaps tonight or on the weekend.  I plan to use it on Monday for the Mercury Transit though.  Fingers crossed for clear skies!  :fingerscrossed:

 

cheers,

 

Jim T.


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#56 erinviegas

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Posted 16 May 2016 - 10:42 PM

How good is this as an Autoguider? I need to use it for autoguiding (with an NEQ6 mount) as well as planetary imaging. Which one would you recommend 224MC or 290MC? I understand that the mono camera's are better for guiding, but would require additional RGB filters for planetary imaging and also this setup would cost a lot more. Hence I'm looking to go in for a color camera.


Edited by erinviegas, 16 May 2016 - 10:47 PM.


#57 jimthompson

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Posted 18 May 2016 - 10:59 PM

I was able to get out for another observing session with the ASI290MM on May 5th.  I am just now getting around to posting the results.  I was impressed at the sensitivity of the camera.  I was able to observe all the members of Hickson 50 without too much problem, and that is from my backyard in central Ottawa with an Astronomik UHC filter on.  You can have a look at my captures on my Flickr site:

 

https://www.flickr.c...157668589828735

 

I am a little puzzled about the amount of bloat in the stars.  They are much bigger and fuzzier than in other cameras with larger pixels.  Is this a sensitivity issue?  A well depth issue?  Or for this pixel size does the seeing have a much larger impact on the sharpness of the image?   I will have to play around more to better understand (ie. add IR cut, use on short FL scope).  The fuzziness is really amplified by the stacking in SharpCap which makes me wonder if it is a seeing issue.  I also had trouble with the stacking in SharpCap not working - unable to find guide stars.  This was mostly when looking down close to the horizon so perhaps it was a transparency issue.

 

cheers,

 

Jim T.


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#58 alphatripleplus

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Posted 19 May 2016 - 08:41 AM

 I also had trouble with the stacking in SharpCap not working - unable to find guide stars.  This was mostly when looking down close to the horizon so perhaps it was a transparency issue.

 

cheers,

 

Jim T.

 

Jim,

 

Those are great pics. If you don't mind trying the latest beta version of SharpCap 2.9  ( 2.9.2529), there is a new digital  gain feature in the live stacking alignment tab which I have found helps increase the number of alignment stars (no affect on the actual displayed or saved views). Setting the digital gain to 2x  usually adds enough alignment stars for me, but the gain can be also set at 4x or 8x if need be.

 

Errol



#59 Relativist

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Posted 19 May 2016 - 08:46 AM

Thanks much Jim. have you considered also trying out Astrolive USB now that it is free to use with ZWO cameras?

#60 jimthompson

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Posted 19 May 2016 - 09:07 AM

Hi Curtis,

 

I was not aware that Astrolive USB was free with ZWO cameras.  There isn't a copy provided on the install disk that came with the camera.  Do you know where I can download a copy?

 

Thanks,

 

Jim T.



#61 Relativist

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Posted 19 May 2016 - 09:11 AM

Jim check out the link in the vendor announcement thread about the partnership with ZWO. I'd link it but I'm on my mobil device at the moment. It's a recent thread.

#62 Don Rudny

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Posted 19 May 2016 - 11:07 AM

Hi Curtis,

 

I was not aware that Astrolive USB was free with ZWO cameras.  There isn't a copy provided on the install disk that came with the camera.  Do you know where I can download a copy?

 

Thanks,

 

Jim T.

Jim,

 

I think you can download it from here.  There appears to be a special version that only works with ZWO cams.

 

http://astrolive.io/astroliveusb.html



#63 KGoodwin

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Posted 19 May 2016 - 01:52 PM

 

Hi Curtis,

 

I was not aware that Astrolive USB was free with ZWO cameras.  There isn't a copy provided on the install disk that came with the camera.  Do you know where I can download a copy?

 

Thanks,

 

Jim T.

Jim,

 

I think you can download it from here.  There appears to be a special version that only works with ZWO cams.

 

http://astrolive.io/astroliveusb.html

 

 

That's correct.  It is also linked from the ZWO website.



#64 easybob95

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Posted 27 May 2016 - 01:36 PM

Hello,

 

great day : i can plug my Canon FD 50mm 1.4 to my brand new ASI178MC (ok, i changed my mind concerning the ASI290MC).

 

My new setup :

 

23032-1464373603.jpg

 

Now, i will be able to make EAA and very wide field photo.

 

Great news for me, really.

 

Alain


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#65 DonBoy

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Posted 28 May 2016 - 07:16 PM

I tried a few DSO captures with the ASI290MM the other night at 20sec.  C8 @ f3.5 - Idas LPS. 

 

M57 - 20sec x 3

60s_total_3x300g_20160527001859155.jpg

 

M13 - 20sec x 35 - was chatting on NSN and I finally took a snap after 35 stacks.  2  stacks would have been enough.

700s_total_35x300g_20160527001711596.jpg

 

The camera is quite sensitive and I experienced no ampglow nor did I need darks.   I hope to try this camera using a Ha NB filter to see how well it does on some of the more popular bright Ha rich objects.


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#66 JonNPR

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Posted 28 May 2016 - 10:06 PM

Don, thanks for these captures and comments. When you have some thoughts on the comparisons in the field between the 220 and 290, I would be very interested in hearing them.

 

Jon



#67 Astrojedi

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Posted 28 May 2016 - 10:28 PM

Very promising results Don. The images look very clean... no amp glow or hot pixels. Which software did you use?



#68 DonBoy

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Posted 29 May 2016 - 12:26 PM

 

Don, thanks for these captures and comments. When you have some thoughts on the comparisons in the field between the 220 and 290, I would be very interested in hearing them.

 

Jon

Sorry I have no experience with a IMX220 sensor so can't comment.



#69 DonBoy

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Posted 29 May 2016 - 12:30 PM

 

Very promising results Don. The images look very clean... no amp glow or hot pixels. Which software did you use?

Hiten, I used SharpCap beta 2.9.2595.



#70 alphatripleplus

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Posted 29 May 2016 - 02:40 PM

Don, thanks for these captures and comments. When you have some thoughts on the comparisons in the field between the 220 and 290, I would be very interested in hearing them.

 

Jon

 

Jon,

 

Do you mean the ASI224 vs the ASI290? If you do mean the 220sensor, what camera are your referring to?



#71 JonNPR

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Posted 29 May 2016 - 02:49 PM

Very sorry for my hasty error, Errol! Yes, I meant the ASI224 v the new ASI290. If not too late to edit and correct, I will make the correction.

 

Thanks,

 

Jon


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#72 jimthompson

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Posted 30 May 2016 - 08:21 AM

Thanks for your post Don.  I caught a bit of your broadcast as well, right before you switched cameras.  I am happy to see you have reasonably tight stars.  This confirms that the soft stars I had during my session was likely due to the poor seeing conditions.  This may also have affected the star registration/stacking.

 

cheers,

 

Jim T.



#73 RafaelP

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Posted 31 May 2016 - 12:34 PM

I am trying to decide between the ASI290mm and ASI178mm (or has everyone got caught up in the excitement for the ASI1600?)  It will be used with a F/4 refractor in narrowband and possibly the Hyperstar in the future(also occasional moon and solar white light imaging.)  Any thoughts?

 

~Rafael



#74 p.v.

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Posted 08 June 2016 - 06:38 AM

 

Thanks for posting Jim!  The 290 mono is a great sensor with the read noise of the 224 but higher sensitivity...  These new CMOS cameras are breaking all the rules!  And the prices are great too!!

 

jim could you take a couple of dark frames with 30s, 60s and 120s exposurss?

 

Al

Hi Al,

 

I've posted some darks on my Flickr account:

 

https://www.flickr.c...157667627835182

 

cheers,

 

Jim T.

 

Not so bad for a half gain darks, but you can achieve more better results with PGMania tool. It removes hot pixels and calibrates images without darks or bias. Also it helps to significantly increase image SNR without any post processing. It is what you must have for DSO imaging with b/w camera. More info about:  http://www.cloudynig...sion/?p=7133473


Edited by p.v., 08 June 2016 - 07:01 AM.


#75 Astrojedi

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Posted 08 June 2016 - 09:58 AM

Hello,

 

great day : i can plug my Canon FD 50mm 1.4 to my brand new ASI178MC (ok, i changed my mind concerning the ASI290MC).

 

My new setup :

 

23032-1464373603.jpg

 

Now, i will be able to make EAA and very wide field photo.

 

Great news for me, really.

 

Alain

 

Alain,

Very nice setup. Where did you get that dovetail to attach the camera to the mount? 

 

Hiten




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