Yes, if you have two Seestar S50s*with the same configuration, same target, and same timing, you can stack all frames together using a PC. This would effectively increase the signal-to-noise ratio (SNR) and improve image quality.
However, regarding doubling the integration time, it’s not a direct 1:1 effect. Here’s why:
- Stacking multiple frames from two devices will reduce noise and enhance details, similar to extending integration time, but it won't be exactly the same as doubling exposure time on a single camera.
- The benefit follows the square root rule—for example, combining two identical datasets gives roughly 1.4× improvement in SNR, not a full 2× equivalent exposure time.
- Alignment and calibration are key—since each Seestar might have slight variations (even with identical settings), careful stacking with software like Siril, PixInsight, or DeepSkyStacker will be required.
That said, using two Seestars is a great way to enhance your data collection, especially for reducing noise and improving detail in faint objects. 👍
