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I also did some tests with DSS last evening :) but it has been more confusing to me instead of enlightening. I ran into exactly this pitfall: or it can also go terribly wrong, [...] - especially if reusing old masters. I reused an old Bias master and DSS crashed :( It drove me nuts. I will have to t...

Hi Martin, I noticed Han has not included a checkbox for “setting black point to 0” so like Mike mentioned previously it maybe a “behind the scenes” process based on type of DSLR used and it’s RAW data I think we can now be pretty sure that this is not the case. (Please see my post above). From my e...

as well as googling Pixinsight and "no black point correction" which is their version of the exact same issue. It's all about the extraction from RAW, by way of the options that can be fed into DCRAW or whatever. But DSS' terminology lends itself to confusion, IMO. PI explains that you want the "no...

Addendum and correction to my post above: ASTAP makes use of both libs, DCRAW and LIBRAW. A (modified) version of a LIBRAW tool named "unprocessed_raw" is used to transform RAW files to FITS format for importing into ASTAP. This is written down in the ASTAP documentation as well. This "unprocessed_r...

@Startrek Hi Martin, I'm not sure about your last post. Maybe something went wrong?

Sorry Gentlemen, I'm running a bit out of time right now, I will respond later to your posts above ... For now I can contribute the following: The checkbox ''Set the black point to 0" of DSS sets the parameter "user_black" of DCRAW to literally 0, just like the name suggests: 2023-10-31 18_01_04-Win...

Anyway, you may already know, but this whole target here is often called the Cosmic Question Mark, if one has the FOV to get it, or makes a mosaic. The right side is the top of the "?" and there's a little dot off to the left. Oh, now I see. No, I didn't know, thanks for pointing out. So your focal...

In addition, Ivo ‘s notes on DSS settings for Startools ( link below ) relating to setting blackpoint to zero mentions that some users have found they need to check the box to get a usable image.One would assume then that this setting is a moving target and is not applicable to every DSLR. https://...

Yeah I know, I’m late on this party. I already wrote a few notes for me some days ago but I haven’t found time to write this post. But now, here it is. :) It’s amazing to see, what’s possible for you using your mono cam and NB filters. :) :thumbsup: nd yet another of my super-short integration speci...

Meanwhile I read the linked threads and it is interesting to see, how much confusion such a tiny checkbox can cause ;-) At a first glance and having read Luc’s first reply on the thread that Klaus linked the whole thing seems to be quite easy. But boy, the other two discussions – I don’t know if I j...