M8 and M20 in SHO and individual versions in HOO (Uwe Deutermann)

M8 and M20 in SHO and individual versions in HOO

Revision title: Reprocessed as HSOO version

I could not resist to process the last images that I obtained with the 6200 before I went on vacation. Even if it was not the more typical amount of integration time, And this processing was an adventure! I installed the new PI version with the hope that the new weighted batch processing would make the stacked images even better than the previous version. Well ... it had some problems, to say it friendly. I tried it 3 times and all 3 times PI hung up at the image analysis of the Hα data. It was so bad that I needed to hard reset the desktop computer in order to stop the PI process, not even a Task End in the task manager was helping. I reverted back to the previous version and it worked well, so something is in the new WBPP that is not quite cocher. I passed the info already to the PI team and they started analyzing, so far the answer is that it does not happen on their Linux machine, which potentially makes sense since I use a Windows machine.

Since it was not working well in PI I also created the stacked images with DSS (no problems there!), but the resulting images were this time very different from the PI stacked images (previous version), by far not as good, which I found out in processing, so many hours for pretty much nothing.

The final result made me happier, it came out very nicely, always the way I wanted to see these 2 wonderful nebulae. The details in the core of M8 are very nice (Version C). The 6200 is with its size and at 925mm just a great combination!

B

Description: Annotated image

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C

Description: The core of M8.

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D

Description: M20 alone in HOO with the same data.

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E

Description: Update to the PI problems encountered when processing this image with WBPP.

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F

Description: M8 is HOO with the same data.

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G

Description: Upgraded desktop to 48GB ... memory consumption of stacking ~40 ASI6200 images.
No freezing of PI anymore. Graph shows you ... 48GB seems to be required.

Uploaded: ...

H

Title: Annotated reprocessed image

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I

Title: Reprocessed as HSOO version

Description: The SII showed more details than the Hα channel, hence I gave this one a new shot. Hα was used as Lum. Especially M20 profited from this unusual color combination choice.

Uploaded: ...

ASI 6200 MM Pro
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Status	Advanced success
Started	...
Astrometry.net job	7982641
PixInsight job	7CRMDLN8QT4OG776MNPVFNBHKSJOWCLT
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h03m39s.996
RA (top/left)	18h07m01s.350
RA (top/right)	18h06m40s.458
RA (bottom/right)	18h00m21s.797
RA (bottom/left)	18h00m36s.455

Dec (center)	-23°43′55″.00
Dec (top/left)	-24°47′36″.60
Dec (top/right)	-22°37′01″.16
Dec (bottom/right)	-22°39′51″.37
Dec (bottom/left)	-24°50′21″.74

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