Decon and Star Mask

[Harry page]

Hi All

I am going to grasp the nettle and have a go so a couple of questions for you

1) When applying a star mask for protection, should it have sharp or soft edges to the mask

2) Does the new deringing deacon mean I do not need background protection/mask

3) How do we decide the std dev and shape of the PSF

And if there is any other advice , just let me have it   


Regards Harry

[twade]

Harry,

1) When applying a star mask for protection, should it have sharp or soft edges to the mask

I have found that you need soft edges; however, the key is expanding the protection out far enough so it captures the width of the "ring".  This is the tricky part which takes quite a bit of experimentation.

3) How do we decide the std dev and shape of the PSF

For this, I highly recommend reading Juan's tutorial.  It answers the "how to" of finding these two values.

http://www.pixinsight.com/examples/deconvolution/Gemini-NGC5189/en.html

Wade

[Silvercup]

Hi Harry:

3) How do we decide the std dev and shape of the PSF

If you don't know how to "calculate" these values, you can use my first script on PI: deconvolution preview. It's under script -> utilities on PI 1.5.5.

This is the thread where I presented the script http://pixinsight.com/forum/index.php?topic=1250.0.

Greetings. Silvercup

[Harry page]

Thanks Chaps

I will open my eyes next time   


Harry

[Harry page]

Hi Me again

How do you load the script into PI, not done this before

Regards Harry

[Nocturnal]

Script->Feature scripts will do it I think

[Niall Saunders]

How do you load the script into PI, not done this before

Maybe I should create my first video tutorial - or will you have already beaten me to it Harry 

Cheers,

[Harry page]

Hi Niall

Help your self with the video as its not on my short list yet , still trying to learn it properley 

Regards Harry

[Niall Saunders]

Hi Harry - now I have to decide whether to wait for 1.5.8 - or to just throw a 'quickie' video together for things as they stand. In either case, I will do the video for PJST scripts as they exist at the moment - and then I will try and get my deBayer script updated, in parallel with the work I am trying to do for the Image Calibration script.

I am also planning to move to Spain, preferably next door to Juan. As far as I can see there really IS a major distortion in the space-time continuum wherever Juan seems to be. It is the only logical explanation for the extra 7.3 hours in every day that Juan seems to have available to him (although it really is a shame that any sudden exposure to even dim daylight does tend to cause his skin to blister and his hair to fall out) 

[Harry page]

Hi Niall

a quick video is something I never managed to do  , by the time i had written it ( Honest I did not do them on the spot) performed and edited and posted the video , a couple of days had gone into the black hole of time 

Good luck and look forward to seeing your work

Harry

[Carlos Milovic]

what hair?

[Niall Saunders]

what hair?

Sorry - isn't this Juan  ? (and his wife,  , "Juan, bedtime, NOW!! You can play on the computer again tomorrow, after you have cut the grass and washed the car.")