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MARS - QHYCCD 178M vs ZWOASI 174M

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#1 cyberblitz

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Posted 24 October 2020 - 12:12 AM

Which is better? The QHYCCD 178M or the ZWOASI 174M..

 

The images are captures I took from my backyard in Brisbane. They are taken with a Skywatcher 10” Newtonian on a NEQ6 Pro mount. I used both the QHYCCD 178M and ZWOASI 174M cameras on the same night. On the QHY camera I used a 2x Barlow and on the ZWO camera I used a 5x Tele Vue Powermate. I used ZWO RGB and an Astronomik ProPlanet 642 BP IR-pass filters with each camera. I took 90 seconds of capture for each filter and took 6 sets of RGB-IR.

 

I processed the captures using Autostakkart3!, Registax, WinJupos, Photoshop and Topaz Denoise

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  • 2020-10-16_Combine.jpg

Edited by cyberblitz, 24 October 2020 - 12:19 AM.

  • Magellanico, Thomas Marshall, jeremiah2229 and 1 other like this

#2 Kokatha man

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Posted 24 October 2020 - 03:34 AM

...not sure what using different image scales with exactly the same camera (sensor) an hour apart & displayed at different image scales says David, but I guess you wanted to do the exercise! :)



#3 cyberblitz

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Posted 24 October 2020 - 03:57 AM

...not sure what using different image scales with exactly the same camera (sensor) an hour apart & displayed at different image scales says David, but I guess you wanted to do the exercise! smile.gif

Hey,

 

They are different sensors. The ZWOASI 174M has a pixel size of 5.8microns, the QHYCCD 178M has a pixel size of 2.4microns



#4 Kokatha man

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Posted 24 October 2020 - 05:36 AM

...oops, might need to check my eyesight..! :lol:



#5 RedLionNJ

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Posted 24 October 2020 - 11:29 AM

Interesting exercise (I do similar from time to time, when the seeing is stable for an extended period), but even with the intent of achieving similar resolutions, the 174 disk is significantly smaller than the 178.

 

And what's going on with the color on the 178?  The SPC is a vivid cyan and the overall Martian tones are just "off" - a bit muddied.

 

 

Where did you introduce the IR into the combination?  In place of what primary color?



#6 cyberblitz

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Posted 24 October 2020 - 08:11 PM

Interesting exercise (I do similar from time to time, when the seeing is stable for an extended period), but even with the intent of achieving similar resolutions, the 174 disk is significantly smaller than the 178.

 

And what's going on with the color on the 178?  The SPC is a vivid cyan and the overall Martian tones are just "off" - a bit muddied.

 

 

Where did you introduce the IR into the combination?  In place of what primary color?

I don't know what's going on with the colors on the 178, it's most likely my terrible post-processing, which I'm still trying to find my niche




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