NextSeq 550 Sensors and Images
I’ve previously looked at the NextSeq 500 imaging module in some detail. Today I thought it might be fun to play around with it a little. In the previous post it seemed likely that the sensor used was an Onsemi MT9P031 based on the pinout, I2C output and physical inspection.
Turns out I had a MT9P031 camera knocking around, so I decided to play around with it. Physically the sensors look very similar:
So I decided to jam the Basler camera into the NextSeq 550 module and see what happened:
Sticking my phone on the sample mount, I could capture some images of the pixel layout (while focus is unfortunately uneven):
I also captured a pretty awful image of a USAF1951:
Based on this I think this makes the FOV ~2.3mm by 1.7mm. ~1.22 microns per pixel. My phone should have a pixel density of 460 PPI, ~55 micron per pixel. I’m not exactly sure how they measure this, but if they just use the smallest distance between pixels this approximately makes sense. Just for fun here’s the phone on a different camera/object:
Again, cropping the MT9 to match:
The NextSeq 550 imaging module seems like a compact and fun little module. The image sensor used here is very cheap (~$30). So I expect most of the costs in this ~$250K instrument lie elsewhere…
More to follow so subscribe!