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Author Topic: PI star mask / masked stretch  (Read 629 times)

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Offline Roger B

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PI star mask / masked stretch
« on: 13:18:51, 26 September, 2015 »
Afternoon all.

Can anyone point me in the right direction to mask large stars in the star mask.     I've been plating around with the settings but cannot get it to cover a couple of large stars.     Small one don't seem to be a problem

Roger
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: PI star mask / masked stretch
« Reply #1 on: 15:59:00, 26 September, 2015 »
Rog

Increase the scale setting. If you have some really big ones you might have to increase it a lot (10 ish). Also tick Aggregate as that can help. If the resulting mask then includes small scale structures that are not stars increase the noise threshold to 0.3 or 0.4 and drop down the small scale growth to zero.

Chris
LX200|ZS70|FSQ85|FLT110|Altair DF250RC|EQ6 Pro(Rowan Belt Mod)|ParamountMX
ATIK383L+/EFW2/OAG|Lodestar|Baader 36mm LRGBHaSIIOIII
Starlight Express SXVRH16/ONAG/FW|Lodestar X2|Baader 2" Filters
Starlight Express SXVRH814/ONAG/FW|LodestarX2|Baader 2" Filters
Lunt LS60PTBF1200|DMK41|Quark Chromo
Samyang 135mm f1.8

Offline Roger B

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Re: PI star mask / masked stretch
« Reply #2 on: 16:21:28, 26 September, 2015 »
Nicely explained.   
Cheers Chris.

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 Phillyo

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Re: PI star mask / masked stretch
« Reply #3 on: 16:45:21, 26 September, 2015 »
Yeah, what Chris said.
Astrotrac | Avalon Linear Fast Reverse with EQmod | WO Star 71 | Astrodon 3nm Ha, 5nm SII and 5nm OIII | Astro-modded Canon 450D | QSI 583wsg | Lodestar X2 Guidecam | Sequence Generator Pro | Pixinsight

 

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