I ran some narrow band tests on M8 last night. Shot 10 x 60" Ha subs, 10 x 60" OIII subs, and 10 x 60" SII subs. I also shot Darks and Bias subs to match. I ran this all using SGP with no issues at all. I have upgraded my ASCOM Platform to the most recent release (6.2) and downloaded the newest ASI1600 driver update. The plan was to shoot a complete narrow band test sequence using 60" subs, with camera gain set at 60 (the recommendation of Jon Rista (CN), and sensor temp at -25C. I also shot the same set of narrow band subs at 90". Not surprisingly it does not take long to run this sequence using these short subs, and frankly I was surprised by the outcome.
I stacked the 60" sets and the 90" sets in DSS, with the Darks and Bias frames (no flats at this time).
Took the final Ha images (60" and 90") out to Photoshop and despite the initial dark appearance when stretched they leap out.
I won't say I am happy with the one linked here, the 60" example (the centre is blown out) but it gives you an indication of what this camera can do with such short narrowband subs. My processing skills are probably not up to handling this.
I will be continuing my testing this coming week. I may get to the point of producing a false color combined image of M8, as the OIII and SII data sets are already gathered at 60" and 90". I am tempted to go to 30" subs, in larger numbers, but would welcome any suggestions.
Link to Astrobin M8 Ha detail page:
http://www.astrobin.com/250623/
Full size here:
http://www.astrobin.com/full/250623/None/