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Sunspot WL with 127mm acro

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#1 lorenzo italy

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Posted 27 February 2021 - 01:41 PM

In addition to shooting in H-alpha I tried to photograph the AR2804 active region, which is now close to the solar edge.

Turbolence IV scale Antoniadi.

 

achromatic telescope ES 127mm
barlow Televue 2x
Herschel Baader Cool Ceramic prism
ND filter 1.8
Continuum filter
uv / ir cut filter
ZWO ASI 178mm

 

foto 7e.jpeg

 

Lorenzo


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#2 chemman

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Posted 27 February 2021 - 01:52 PM

That is very nice Lorenzo.  

 

Chuck


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#3 sg6

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Posted 27 February 2021 - 02:12 PM

It's Yellow, continium filters are 540nm so Green ??



#4 Mike G.

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Posted 27 February 2021 - 02:26 PM

It's Yellow, continium filters are 540nm so Green ??

pretty easy to replace one color with another in PS.  I like it, very nice resolution!


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#5 descott12

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Posted 27 February 2021 - 02:26 PM

beautiful image
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#6 soldatispace

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Posted 27 February 2021 - 05:16 PM

Bravo Lorenzo !


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#7 LDW47

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Posted 27 February 2021 - 06:01 PM

A great pic ! Is your wedge 1.25” or 2” or did I miss it ?


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#8 LDW47

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Posted 27 February 2021 - 06:04 PM

In addition to shooting in H-alpha I tried to photograph the AR2804 active region, which is now close to the solar edge.

Turbolence IV scale Antoniadi.

 

achromatic telescope ES 127mm
barlow Televue 2x
Herschel Baader Cool Ceramic prism
ND filter 1.8
Continuum filter
uv / ir cut filter
ZWO ASI 178mm

 

attachicon.giffoto 7e.jpeg

 

Lorenzo

So it is WL colourized ?



#9 PhotonJohn

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Posted 27 February 2021 - 06:07 PM

WOW Lorenzo! Bella immagine!


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#10 hopskipson

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Posted 27 February 2021 - 06:10 PM

Very nice, Lorenzo!


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#11 rigel123

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Posted 27 February 2021 - 09:35 PM

Nice one Lorenzo!


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#12 lorenzo italy

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Posted 28 February 2021 - 03:49 AM

Thanks to everyone for the compliments,

 

A great pic ! Is your wedge 1.25” or 2” or did I miss it ?

It's a 2 inch,
I also have a 1.25" prism, but on the 127mm diameter refractor it seems to me to get too hot.

 

 

It's Yellow, continium filters are 540nm so Green ??

 

So it is WL colourized ?

 

Yes, I shot in grayscale and therefore the green of the Continuum filter "is not seen" even if it has been recorded in the image.
I then colored the photo using my favorite shade of yellow.
If you want you can color in any shade, from red to violet ...

 

Lorenzo


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#13 covelen

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Posted 28 February 2021 - 06:45 AM

Nice photo, Lorenzo.

 

Where do you install the 2x TV, in front of or behind the Herschel prism?



#14 lorenzo italy

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Posted 28 February 2021 - 09:22 AM

Thanks, covelen.

The barlow I mount it after the Herschel prism. I think everyone does that.

 

Lorenzo



#15 LDW47

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Posted 28 February 2021 - 09:42 AM

Thanks to everyone for the compliments,

 

It's a 2 inch,
I also have a 1.25" prism, but on the 127mm diameter refractor it seems to me to get too hot.

 

 

 

 

Yes, I shot in grayscale and therefore the green of the Continuum filter "is not seen" even if it has been recorded in the image.
I then colored the photo using my favorite shade of yellow.
If you want you can color in any shade, from red to violet ...

 

Lorenzo

I am in the learning curve as I have just started solar last summer. Do you find much better results using a filter vs no filter ? Could you give me the name and specs of your filter ? I appreciate your knowledge as I am into both PST viewing and WL using a Lunt 1.25” wedge on my 80mm, f6 but I want to also use my 127mm, f6.6 refractor as a change of pace. This was a couple of my first WL attempts with my dslr last fall.

 

008B15A2-C2EB-496C-BBA1-E3C0DBABF15D.jpeg

25B4EF8B-A227-4542-A30E-02A95805212D.jpeg


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#16 lorenzo italy

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Posted 28 February 2021 - 05:42 PM

Hi,
the filters help a lot to increase the contrast of the photosphere features.
I have always mounted on the Herschel prism, after an ND3, a Baader Continuum filter, excellent for increasing the details of sunspots and facular areas.
My model is from many years ago, so I have to combine a UV / IR cut filter for maximum contrast.
In the new series it seems there is no longer a need for the uv / ir cut filter.
Before spending on the Continuum filter you can try a simple green filter, always after the Herschel prism and an ND3 filter, of course.
I use the ND 1.8 filter only for photographs.
Already with a green filter you will see a good improvement in the image, while the Continuum has an edge but costs enough.

On the 127mm refractor you can try the 1.25 "prism, but you will see that it will get very hot.
In fact, I switched to the 2 "model, just to avoid this problem.

 

For images, if you have the option, switch to a monochrome camera.
Compared to the SLR you will need a connected PC, but the results will be better, even with the less expensive camera models.
I started with analog video surveillance cameras ...

 

Lorenzo


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#17 peterm

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Posted 28 February 2021 - 06:27 PM

That color AR image is a stunner Lorenzo, bravo!



#18 LDW47

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Posted 28 February 2021 - 06:33 PM

Hi,
the filters help a lot to increase the contrast of the photosphere features.
I have always mounted on the Herschel prism, after an ND3, a Baader Continuum filter, excellent for increasing the details of sunspots and facular areas.
My model is from many years ago, so I have to combine a UV / IR cut filter for maximum contrast.
In the new series it seems there is no longer a need for the uv / ir cut filter.
Before spending on the Continuum filter you can try a simple green filter, always after the Herschel prism and an ND3 filter, of course.
I use the ND 1.8 filter only for photographs.
Already with a green filter you will see a good improvement in the image, while the Continuum has an edge but costs enough.

On the 127mm refractor you can try the 1.25 "prism, but you will see that it will get very hot.
In fact, I switched to the 2 "model, just to avoid this problem.

 

For images, if you have the option, switch to a monochrome camera.
Compared to the SLR you will need a connected PC, but the results will be better, even with the less expensive camera models.
I started with analog video surveillance cameras ...

 

Lorenzo

What green filter, the no. 56 or 58 ?



#19 LDW47

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Posted 28 February 2021 - 06:36 PM

Hi,
the filters help a lot to increase the contrast of the photosphere features.
I have always mounted on the Herschel prism, after an ND3, a Baader Continuum filter, excellent for increasing the details of sunspots and facular areas.
My model is from many years ago, so I have to combine a UV / IR cut filter for maximum contrast.
In the new series it seems there is no longer a need for the uv / ir cut filter.
Before spending on the Continuum filter you can try a simple green filter, always after the Herschel prism and an ND3 filter, of course.
I use the ND 1.8 filter only for photographs.
Already with a green filter you will see a good improvement in the image, while the Continuum has an edge but costs enough.

On the 127mm refractor you can try the 1.25 "prism, but you will see that it will get very hot.
In fact, I switched to the 2 "model, just to avoid this problem.

 

For images, if you have the option, switch to a monochrome camera.
Compared to the SLR you will need a connected PC, but the results will be better, even with the less expensive camera models.
I started with analog video surveillance cameras ...

 

Lorenzo

I am waiting for the 2” Altair Astro wedge to come back in stock at Ontario Telescopes here Canada.


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#20 lorenzo italy

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Posted 01 March 2021 - 01:39 PM

What green filter, the no. 56 or 58 ?

I believe that the clearest one, 56, is already sufficient. If you already have one available at home, feel free to try it. Even if it is the darkest one, it costs nothing to try.

 

Lorenzo



#21 LDW47

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Posted 01 March 2021 - 01:49 PM

I believe that the clearest one, 56, is already sufficient. If you already have one available at home, feel free to try it. Even if it is the darkest one, it costs nothing to try.

 

Lorenzo

No.58 is much darker, I have the 56. Thanx !




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