There is a growing interest in near real time observing which is generally accomplished by using sensitive, low noise, low resolution astro imaging cameras or astro video cameras designed to take relatively short exposures of 10 to 120 seconds usually in conjunction with on the fly software for automatic aligning, stacking and minor processing, which produces a respectable image on the computer display within a few minutes time with little or no intervention from the observer. If individual exposure times are limited to 60 seconds or less, guiding of the tracking equatorial mount is generally not required for wide field observing with a fast (around f/4) optical tube assembly. This can produce a significant improvement in the visible detail and color of deep sky objects compared to eyepiece viewing.
The fast optics, frequently obtained by using rather aggressive focal reduction, does well with image sensors that are relatively small (1/3, 1/2, 2/3 format) with large pixels and low to moderate resolution. The ICX285 sensor and the new ICX825 share the same physical specifications of type 2/3, 6.45 micron pixel size and 1.4M pixels. If the ICX825 EXview HAD II turns out to be a good sensor choice for producing an astro camera with high sensitivity and low noise, it could be an excellent higher resolution choice for near real time observing systems. I could envision an Atik Series 4 cooled camera based on the ICX825, with improved performance over the Atik 314L+, as a possible candidate for this application.
I have observed very nice near real time images of deep sky objects produced with the Atik 314L+ using a total exposure time of just 1- 3 minutes. It would be wonderful if a new camera based on the ICX825 would perform as well with even shorter exposure times. This camera, in conjunction with on the fly processing software, could offer a significant improvement in image quality over the currently available astro video cameras. I really see the near real time observing market ready to take off at a healthy growth rate. What is your opinion of this market fitting in nicely between the astro observing (eyepiece) market and the astro imaging market?