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New guidecamera advice

astrophotography
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#1 niccoc1603

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Posted 21 July 2019 - 04:29 AM

I am sick of battling with the poor drivers and usb errors of my Orion SSAG pro

So I am going to buy a new guidecamera

I am going to guide my 102/714 refractor with 0.8x reducer (f5/6 @ 571mm focal) and QHY183c so my main image scale is 0.87”/px

I will use OAG guiding, I appreciate an advice between these two cameras:

ZWO ASI290mini (5.6x3.2mm sensor @2.9um pixel size )


ZWO ASI120MM mini (4.8mmx3.6mm sensor @ 3.75um pixel size)

Thanks

#2 fetoma

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Posted 21 July 2019 - 07:52 AM

I'm not good at all that pixel scale stuff, but for OAG, the bigger the sensor the better. The ASI174MM Mini if you can afford it.



#3 ChrisWhite

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Posted 21 July 2019 - 07:58 AM

Well, the 120 has the same exact sensor as the SSAG pro.  You may have more reliable connections but the quality of your guidestars will be identical. 

 

The 290 however has adjustable gain, a bigger sensor, the ability to bin and is a FAR more sensitive camera.  By sensitive, I mean you will have many more guidestars to choose from and a much higher SNR.  This is especially important if you use an OAG. 

 

Here is a thread I started a while back when I beta tested the 290mini.  I previously was using the SSAG Pro.

 

https://www.cloudyni...ta-test-thread/


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#4 niccoc1603

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Posted 21 July 2019 - 09:28 AM

thank you, I had a look a round and also found many positive reviews of the 290mini

 

I'll pull the trigger on that!



#5 ChrisWhite

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Posted 21 July 2019 - 09:38 AM

thank you, I had a look a round and also found many positive reviews of the 290mini

I'll pull the trigger on that!


Good choice. ;-)


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