From: Alan Friedman <alan@greatarrow.com>
Date: December 21, 2014 4:06:11 PM MST
To: "Astro_IIDC@yahoogroups.com" <Astro_IIDC@yahoogroups.com>
Subject: Re: [Astro_IIDC] MAP problem
Hi Phil,
As Milton said, it will be helpful to know what subject you are trying to process with MAP. Doing a full disk Ha image with my 6MP sensor, I have no problem MAP processing surface detail with 150-170 regions selected - even when the selection areas appear to hold very little unique features. I watch the confidence number for each selection carefully - never using a number less than 7.0. Processing the edge prominences is another story. I find that AstroIIDC almost always quits if I try to do an MAP composite. I’ve not found a settings adjustments that succeeds in solving this issue. The confidence number for the regions is harder to evaluate, as the difference between the disk and dark sky background will produce a large number despite the soft and faint detail in the prominences. The individual region stacks work fine so I generally process this subject without making an MAP composite, batch process them in AstyroIIDC and then assemble the components by hand (usually less than 20 regions) in Photoshop. Generally I do not experience the same difficulties in higher magnification captures of prominences - just in the lower resolution full disk data.
I you share more about the type of subject matter that is causing problems, I and others may be able to reply with better suggestions.
clear skies,
Alan
Alan Friedman
On Dec 21, 2014, at 12:11 AM, Phil pkh111@tampabay.rr.com [Astro_IIDC] <Astro_IIDC@yahoogroups.com> wrote:
Happy Holidays Astro IIDC Group,
I have recently started imaging again and have run into an issue that I have not been able to resolve. Hopefully someone here can help. When stacking and aligning frames using multiple alignment areas, Astro IIDC quits unexpectedly. Sometimes it quits while stacking regions and sometimes after stacking all regions. This is new as in the past I could use 30 or more areas without any problem. Same old macbook pro and snow leopard. I've set the alignment parameters to the least stringent requirements, tried various sized and number of areas, and have read the help file numerous times. Trashing the prefs and reinstalling the program had no effect. Obviously, I'm missing something. The curious thing is that it did align and stack successfully three times out of hundreds of attempts. Why??? What did I do right?
By now you are probably smiling at my dilemma but I would really appreciate any suggestions.
Thanks,
Phil
p.s. Milton, was there a Christmas card print this year?