When I changed from a solar-system-imaging camera with 3.75 micron pixels to one with 2.2 micron pixels, my images of Jupiter and Saturn improved dramatically. Why? Simple - more pixels forming the image.
Today, sensitive, low-noise Back Side Illuminated (BSI)sensors available with 1.1 micron pixels and are used in many cell phones - as the secondary (selfie) camera. When are we going to see these high-resolution BSI sensors used in planetary video cameras? What are the planetary camera manufacturers such as Celestron, Orion, PointGrey, MallinCam, etc. waiting for?
With my Celstron C11 at native F/10, changing from 3.75 to 2.2 micron pixels caused my images of Jupiter's diameter to increase from 176 pixels to 300 pixels. That's an increase in magnification equivalent to adding a 1.7X Barlow... without a Barlow limitations.
3.75 micron pixels
2.2 micron pixels
Why not just add a 1.7X Barlow? Every time I've tried that my images went soft - no matter whose high-quality Barlow. Why? The atmosphere, not the optics, limited the usable magnification.
e.g. The C11 native focal length is about 2700mm. Most the image sensors I used had diagonals of about 9mm and act like 9mm focal length eyepieces. Thus the magnification was about 2700/9 = 300X. There are only a few times a year when I can use that high a magnification. Adding a 1.7X Barlow pushed the magnification up to 1.7 x 300X = 510X... and my atmosphere never supported that.
Returning to the 1.1 micron BSI sensors. Imagine, if there was a solar-system-imaging camera using a 1.1 micron pixel size BSI sensor. At 300X magnification, my image with Jupiter's diameter of 300 pixels (with 2.2 micron pixels) would increase in size to 600 pixels!
Further, on those many nights when the atmosphere cannot support 300X magnification, one could use 150X magnification and still image Jupiter with a diameter of 300 pixels.
Consider the many amateur astronomers with telescopes smaller that a C11, they could image Jupiter at high resolution too.
e.g. A 100mm ED telescope of say 900mm focal length and a 9mm diagonal sensor would have a magnification of 900/9 = 100X. With a 1.1 micron pixel size BSI sensor, at 100X magnification, the image of Jupiter's diameter would be 200 pixels. However, the optics of a 100mm ED scope are easily good for 200X magnification, so add in a 2X Barlow and obtain an image of Jupiter's diameter of 400 pixels. That's a major and significant benefit.
Are there BSI 1.1 micron sensors for such a planetary-imaging cameras available? Yes, a whole lot of them.
Sony Image Sensors
IMX219PQ 8 MP bsi 1.12 µm (H) × 1.12 µm (V) 3280 × 2464 @ 30fps - Nexus 9 rear camera
IMX214 13.5MP bsi 1.12 µm (H) × 1.12 µm (V) 4208 × 3120 @ 30fps
IMX219 8 MP bsi 1.12 µm (H) × 1.12µm (V) 3280 × 2464 @ 60fps @1080 with V-crop
IMX230 21 MP bsi 1.12 µm (H) × 1.12 µm (V) 5344 × 4016 @ 24fps
IMX258 13 MP bsi 1.12 µm (H) × 1.12 µm (V) 4208 × 3120 @ 30 fps
IMX278 13MP Pixel 1.12 µm (H) × 1.12 µm (V) 4208 × 3120 @ 30fps
IMX135 13MP Pixel 1.12 µm (H) × 1.12 µm (V) 4208 × 3120 @ 24 fps 10-bit A/D
ON Aptina Sensors
AR1335 13MP 1.1µm x 1.1µm @ 30fps
S5K8B1 2Mp 1.12µm x 1.12µm 1920x1080 Bsi 30fps Secondary Camera sensor in Samsung Galaxy
S5K8B1Y 2Mp 1.12µm x 1.12µm 1920x1080 Bsi 30fps
S5K6D1 4Mp 1.12µm x 1.12µm 1920x1080 Bsi ISOCELL’s RWB
So, what are we waiting for? The benefit is clear to see and the technology is available.
When are the solar-system-imaging-camera manufacturers going to give us 1.1 micron BSI cameras?