DSS Stacking Comparison with the Horse Head Nebula (Uwe Deutermann)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 48 sig Ori · 50 zet Ori · Alnitak · B33 · Horsehead nebula · IC 431 · IC 432 · IC 434 · IC 435 · LBN 924 · LBN 925 · LBN 927 · LBN 928 · LBN 944 · LBN 946 · LBN 953 · LBN 954 · LBN 958 · LBN 962 · LDN 1635 · LDN 1636 · NGC 2023 · NGC 2024 · PK204-16.1 · Sh2-277 · The star 41Sex · The star Alnitak (ζOri) · The star σOri · VdB48 · VdB51

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DSS Stacking Comparison with the Horse Head Nebula

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DSS Stacking Comparison with the Horse Head Nebula

I thought the Horse Head Nebula would be a nice target to see what kind of differences the stacking parameters in Deep Sky Stacker produce. In above image the Horse Head was cropped in the same way in 3 different images: The first one was done in the "traditional" way, median stacking, no drizzle. For the middle image I used 3x drizzle with all other parameters not changed. The third and most right image used 3x drizzle plus median kappa sigma clipping.

While I do not see much difference between the middle and the right image I believe that the 3x drizzle made a slight difference. A difference thought hat might not be worth doing since it takes longer processing time unless you resize the image right at the beginning of the processing.

Original
B
C
Final
D

B

Description: Added description

Uploaded: ...

C

Description: RGB Comparison of drizzle. The processing time for stacking was quite significant. Approximately 10-15 minutes for the No drizzle version, more than 3 hours for 3x drizzle!! But the difference is quite obvious in this case!

Uploaded: ...

D

Description: The cropped version which makes the difference more obvious. All images were just enhanced with STF in PI. I applied to the RGB versions SCNR (green).

Uploaded: ...

Narrowband imaging
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ZWO ASI1600MM/QHY163M

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Status	Advanced success
Started	...
Astrometry.net job	3077151
PixInsight job	XYYBQI64DXJWH3P54HOWNC089VAH90RY
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h40m32s.35
RA (top/left)	05h38m07s.21
RA (top/right)	05h37m29s.60
RA (bottom/right)	05h42m54s.80
RA (bottom/left)	05h43m24s.78

Dec (center)	-01°20′33″.8
Dec (top/left)	+00°31′31″.5
Dec (top/right)	-03°09′31″.0
Dec (bottom/right)	-03°13′03″.7
Dec (bottom/left)	+00°27′40″.9

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DSS Stacking Comparison with the Horse Head Nebula

DSS Stacking Comparison with the Horse Head Nebula

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DSS Stacking Comparison with the Horse Head Nebula

DSS Stacking Comparison with the Horse Head Nebula

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