M42 - Good Detail, Nasty Stars!

[Budgie1]

Due to the house, a large hill and tall fir trees, I don't get a good view of Orion at any time of year. So it one of those that I don't normally bother with, but a couple of nights ago it was just in the right place and I managed 1 hour & 9 minutes of subs between the trees.

That evening I'd swapped my ASI1600MM Pro for the ASI294MC Pro, to do some broadband targets. This was attached to a WO Z73 III with adjustable flattener and I though I had the back spacing right, but apparently not, as you can see from the stars in this image.

Tonight I've added another 1.7mm back spacing and the stars at the edges look fine now.

Anyway, I think this is the most detailed image of M42 that I've got to date, even for an hour, the amount of dust in the there is great and I hope I've managed to control the core using GHS in PixInsight.

These were 60s subs with ASI294MC Pro, 200 gain and 30 offset, calibrated with Darks, Flats & Dark-Flats.

C's & C's welcomed and do the clicky thing for full res'.