Quick 4x4 Mosaic around NGC 2547 - first time and valid for learning (Claudio Tenreiro)

Quick 4x4 Mosaic around NGC 2547 - first time and valid for learning

Revision title: A few improvements

I did a 4x4 mosaic in the neighbourhood of NGC 2547. Each panel was created from 18 images of 240" each, so a bit more than 1 hour each. A few things to learn but also some issues to consider:
1. Acquisition and Stacking ok, no problem, using NINA and DSS
2. Processing using PxI a few problems, new functions must be used so I learned the basic, how to stich a mosaic but, still a lot more to learn regarding background/light of the different panels. The panels are taken at different positions of the sky, as the earth rotate, so the conditions of the four sets are different and some corrections must be done.
3. MY COMPUTER starts to slow down as the mosaic image was created and later, using GIMP, real slow, so it is the limit, or even beyond the limit of what I can handle, it takes ages for each action and Xmas has just passed !, so I have to wait for my birthday to get a new and faster computer.
4.- As a test, I am ok, I can stich a set of files, from there...let's do some homework first.

Regarding this image, I am going to increase the data, so to have minimum 2 hours/panel, maybe 3, then background "balance" between the panels and stich again and see the result.

Original
Final
B

B

Title: A few improvements

Description: Ok, this was my first attempt of mosaic and full of problems. So:
1.- exposure time doubled
2.- background almost equal in of all four panels before alignment but after plate solving
3.- merging after alignment to get rid of pinched stars as well as most of the stitch lines before GradientMergeMosaic
4.- almost achieved a good result but still there is an obvious problem with one stitch, left for the next try.
5.- better stretching and colour balance, the clouds of gas are nice in the region

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Status	Advanced success
Started	...
Astrometry.net job	5501948
PixInsight job	GYMWRF3X44D9QFJ3W29Y7N9WD256HROJ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	08h06m09s.54
RA (top/left)	08h12m55s.30
RA (top/right)	08h12m35s.37
RA (bottom/right)	07h59m50s.79
RA (bottom/left)	07h59m17s.96

Dec (center)	-49°53′01″.7
Dec (top/left)	-51°29′29″.1
Dec (top/right)	-48°16′02″.5
Dec (bottom/right)	-48°15′37″.5
Dec (bottom/left)	-51°28′32″.5

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