M42....that time again.

[paul mc c]

Can never get this right,always burning out the core so I tried 8 sec subs around 450 of them still the same....🥴 Any way probably won't give it another go.

[Albir phil]

Have a look at Trevor Jones At astrobackyard he has a tutorial on M42 using 10 sec subs for the core and longer subs for the surrounding cloud,then combining the two sets of subs to keep the core from burning out 

[Roy Foreman]

Nice image. With regard to the core I have found that the only way is to do shorter subs and blend the two together. A bit time consuming but I'm sure there are plenty of tutorials around on how best to fo it.

[maw lod qan]

Very nice image!

So much more there than my recent single image!

[Fegato]

As the others say, best way is to capture two sets of subs for this target, and then apply some sort of HDR processing (I use Pixinsight, and the HDR processing works very well). With my last RASA attempt I used 20 second subs for the main shot, and a smallish number of 2 second subs for the core. To get to this I trialled shorter sub-lengths, looking at unstretched results until I had something that wasn't blown.

Do your 8 second subs give you a non-blown out core and separation of Trapezium stars when un-stretched? If so, maybe HDR compression would still work. Not sure what post-processing tools you use and whether this is an option?

[paul mc c]

2 hours ago, Fegato said:

 

Do your 8 second subs give you a non-blown out core and separation of Trapezium stars when un-stretched? If so, maybe HDR compression would still work. Not sure what post-processing tools you use and whether this is an option?

Yes a bit blown out,I use APP...actually just came across 2,4,6,8 and 10 sec subs I must have done earlier in the month and the 2 sec clearly shows the Trapezium so will give it one last try with shorter subs.