The original Horizon OSC and ZWO ASI1600 have identical sensors. My understanding is that Atik Horizon and ZWO simply use a different (x10) graduation for gain, as one is in whole units and another is tenths. Hence, 10 in Atik Speak = 100 ZWO and 30 = 300 etc. I found this very useful when I migrated from Atik Infinity software to Sharpcap because although Infinity was brilliantly simple for beginners given its presets, it lacked many features (but I believe Dusk has since remedied). I followed the gain (divided by ten) and exposure settings that were being used by ASI1600 users when posting images in more active forums.
However, I still struggled with finding correct exposure and gain without such comparisons until I discovered the Brain and Smart Histogram functionality in Sharpcap. I hence did a Sharpcap Sensor Analysis on my Horizon and have never looked back. It guides you to the best settings. I don't use Dust or Artemis so can't comment about those, but tools do exist in Sharpcap that can assist. slime rancher 2
Sensor-wise, both the original Horizon OSC and the ZWO ASI1600 are interchangeable. Since Atik Horizon's gain is measured in whole units and ZWO's is measured in tenths, the two systems presumably use different (x10) graduations for gain. Therefore, in Atik Speak, 10 is equivalent to 100 ZWO, 30 to 300, and so on.