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Solar Gravity 2018

Author Topic: Pixinsight Noise Reduction  (Read 3503 times)

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Offline psjshep

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Re: Pixinsight Noise Reduction
« Reply #15 on: 15:52:48, 06 November, 2014 »
(but you have dribbled in the past :laugh: )
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Offline Roger B

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Re: Pixinsight Noise Reduction
« Reply #16 on: 16:15:09, 06 November, 2014 »
(but you have dribbled in the past :laugh: )


On many occasions Phil

Roger
Scopes - TS65q, W/O 110 Triplet
Mount - EQ6 PRO via  Eqmod,  Rowan belt modded
Cameras - SX694, QSI583WSG,Lodestar Guidecam, GP-Cam, QHY5II.
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SGPro, Pixinsight.

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Offline Roger B

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Re: Pixinsight Noise Reduction
« Reply #17 on: 13:46:05, 07 November, 2014 »
Chris any pointers on drizzle,  no matter what I have tried I get error messages. 

Rog
Scopes - TS65q, W/O 110 Triplet
Mount - EQ6 PRO via  Eqmod,  Rowan belt modded
Cameras - SX694, QSI583WSG,Lodestar Guidecam, GP-Cam, QHY5II.
TS 9mm OAG
Quantum 7x1.25 EFW, Baader LRGB,Ha,OIII,SII Filters 
Quark chromo

SGPro, Pixinsight.

************AND NO TIME TO USE IT************

Offline chris.bailey

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Re: Pixinsight Noise Reduction
« Reply #18 on: 14:16:22, 07 November, 2014 »
Roger

It is a bit convoluted.

1) In star align tick the box that say to generate drizzle data.

2) In Image Integration run it as normal (as if you were generating an image) but click the box to add the drizzle files. You can untick the box to generate an integrated image as PI is only using the image integration engine to update the drizzle files at this stage.

3) Run Drizzle Integration and add the drizzle files. This generates the integrated result of the drizzled images. Use the default of 2 and drop shrink of 0.9. Lower values of drop shrink yield better results but needs big dithers and a lot of frames. If it works at 0.9, try 0.8 and look for dark artefacts around bright parts of the image, if none try 0.75. 0.9 is probably going to be your limit though.

The end result is a drizzled 2x upscaled result. With dithered under sampled images the results are pretty spectacular.

Chris
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