its it safe to say a SHG is born?

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highfnum
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its it safe to say a SHG is born?

Post by highfnum » Mon Jun 22, 2015 11:23 pm

my third attempt - much improved from "ok guys I need your help" thread
this shot shows -- proms , filaments, peach surface, flares

I still got a learning curve on getting brightness and how to fix picture size

would you guys say -- Yes you got a SHG?

question why is sun egg shaped - its it that im not square with slit and optical train?

can that be fixed?
with software
shg2.jpg
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Re: its it safe to say a SHG is born?

Post by thesmiths » Tue Jun 23, 2015 1:35 am

It's definitely working. I assume one issue is that the slit is not perpendicular to the scan direction. I don't think that's absolutely necessary but it's obviously helpful if it's not too far off. The current data can be fixed by a transformation in Photoshop (rotate and then resize). Your slit looks very clean (I guess it is relatively wide?). It seems to me you need to improve the focus (of the Sun's image on the slit) since the edge of the Sun does not look extremely sharp.

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Re: its it safe to say a SHG is born?

Post by swisswalter » Tue Jun 23, 2015 4:06 am

Hi John

that is a further good result, congratulations
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Re: its it safe to say a SHG is born?

Post by marktownley » Tue Jun 23, 2015 5:26 am

Excellent stuff! I'm impressed!
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http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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Re: its it safe to say a SHG is born?

Post by Montana » Tue Jun 23, 2015 9:22 am

:hamster: :hamster: :hamster: well done, filaments and plage :bow

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Re: its it safe to say a SHG is born?

Post by DSobserver » Tue Jun 23, 2015 12:00 pm

nice result!

Was your mount well align to the north? I think that this is the reason why you face this issue...

I often (always?) get this and playing with shearing and resize effect.

I also would suggest you to close a bit more the slit in order to decrease the wavelength pass

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Re: its it safe to say a SHG is born?

Post by highfnum » Tue Jun 23, 2015 9:26 pm

thanks for all the kind words
very challenging project
Ive built my own solar scope and modded others but this SHG stuff
requires a bit of different thinking



Look I know i got a ways to go before images come close to SHG images
posted by others in this forum
but it does look like all the pieces are in place
it just getting thru details in the learning curve

I thank all -- ex: Merlin66, Wah! and others that help me with this one

this project - I will be tinkering for a long while

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Re: its it safe to say a SHG is born?

Post by DSobserver » Wed Jun 24, 2015 6:36 pm

a bit better :

Image

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Re: its it safe to say a SHG is born?

Post by highfnum » Wed Jun 24, 2015 7:22 pm

Yes it is merci !
what steps did you do to do fix

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Re: its it safe to say a SHG is born?

Post by DSobserver » Wed Jun 24, 2015 8:06 pm

I use freeware GIMP in french

1-Filter / "improve" /remove line
2- Tool / "transformation" / "shearing"

Do you use Wah soft? If yes, did you "play" with it to reduce the smiling effect? Indeed only the center of the sun show Ha wavelengt....

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Re: its it safe to say a SHG is born?

Post by highfnum » Wed Jun 24, 2015 9:29 pm

yes I used Wah! software

but what is smiling effect?

see its a new world of things to know!

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Re: its it safe to say a SHG is born?

Post by Wah » Thu Jun 25, 2015 12:28 am

Congratulations!

You may use "skew" and "resize" (1 direction only) functions to make the solar disk round.

The upper part of the sun is a bit off band, it seems not from the smiling effect if the original video is in horizontal.

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Re: its it safe to say a SHG is born?

Post by highfnum » Thu Jun 25, 2015 1:17 am

thx wah

i tried one of the off band lines just for fun
got this
not sure what it means
1) ha line is very dark compared to surrounding lines
2) looks like white line image

DSobserver im learning! i made this sun round
offband.jpg
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Re: its it safe to say a SHG is born?

Post by Wah » Fri Jun 26, 2015 7:31 am

I use skew like this.
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Re: its it safe to say a SHG is born?

Post by marktownley » Fri Jun 26, 2015 8:12 am

I'm so going to have to try and make one of these...
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http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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Re: its it safe to say a SHG is born?

Post by highfnum » Fri Jun 26, 2015 3:08 pm

mark - if I can do you can!

Wah -- where is this skew thing

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Re: its it safe to say a SHG is born?

Post by Wah » Fri Jun 26, 2015 10:38 pm

Image

2nd trial to remove vertical stripes:
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Re: its it safe to say a SHG is born?

Post by highfnum » Sat Jun 27, 2015 3:13 am

thank you

its a bit of a learning curve
but I think i have no where to go but up with this

very interesting way of doing solar imaging

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Re: its it safe to say a SHG is born?

Post by highfnum » Sat Jun 27, 2015 2:27 pm

Wah! plz

how did ypu make image more uniform?

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