Full Disk 01-15-2022

[DanielD]

Hello everyone,

I have a recently acquired Lunt LS60MT that I am getting fantastic use out of in both visual and photography. Unfortunately, I have trees in my way that only give me a 1 hour gap to image during the winter, so I am looking forward to the summer sun.

Here is a full disk that I captured (mosaic 1 x 2) on January 15th, 2022 from central New Jersey at around 10am EST(-5:00 UTC).

I am open to feedback. I am still finding my way when editing the sun. I am also still kind of unsure if I am on band well enough with my images, but I am doing the best I can. As I use it more I am sure I will be able to better detect deficiencies in my tuning.

Thanks
Dan

[marktownley]

Welcome to the forum! Great opening pic!

[Montana]

A very warm and sunny welcome Dan

Fantastic opening picture, amazing prom on the SW

Alexandra

[ffellah]

Welcome and excellent first post, Dan.

Franco

[arnedanielsen]

A warm welcome Dan!

Beautiful full disk image!

Best regards,
Arne

[rsfoto]

Hi Dan,

Well done. For Feed back I think we would need a non inverted Monochrome image IMHO

[DanielD]

Thank you everyone!!

[DanielD]

Hi Dan,

Well done. For Feed back I think we would need a non inverted Monochrome image IMHO

Not a problem! Im actually working on it right now!

[DanielD]

Hi Dan,

Well done. For Feed back I think we would need a non inverted Monochrome image IMHO

Hi so this was the best I could do. Absolutely need to work on my skills.

[rsfoto]

Hi Dan,

Interesting. Your coloured inverted image looks far better then your monochrome.

Can you upload somewhere the raw material ? I would gladly take a look into that if you want.

[DanielD]

Hi Dan,

Interesting. Your coloured inverted image looks far better then your monochrome.

Can you upload somewhere the raw material ? I would gladly take a look into that if you want.

Sure thing, appreciate the help.

https://drive.google.com/file/d/1g9tbEU ... sp=sharing

Edit: I am sure my tuning can be greatly improved. I seem to be very hesitant with my tuning, most of the time not knowing just how well I am on band. My procedure right now is to make sure my highlights are controlled and then just doing the best I can visually. The changes are so subtle to me and I am not yet attuned to see it so well.

[rsfoto]

Hi Dan,

With Raw material I meant what comes directly out of the camera without any manipulation eg. the *.ser file or the *.avi file or whatever files you take.

That helps me much more to judge where you can improve starting with acquisition ...

I see you have an ASI290MM same as I have except my is the Cool version and herewith I take *.ser files. Process them in AviStack (I guess I am the only one here in SolarChat working with AviStack )

[Rusted]

Congratulations and welcome.

You beautifully captured the power and energy of the sun in your first image.

[rsfoto]

Hi Dan,

Interesting. Your coloured inverted image looks far better then your monochrome.

Can you upload somewhere the raw material ? I would gladly take a look into that if you want.

Sure thing, appreciate the help.

https://drive.google.com/file/d/1g9tbEU ... sp=sharing

Edit: I am sure my tuning can be greatly improved. I seem to be very hesitant with my tuning, most of the time not knowing just how well I am on band. My procedure right now is to make sure my highlights are controlled and then just doing the best I can visually. The changes are so subtle to me and I am not yet attuned to see it so well.

Hi Dan,

Thanks. I did take a look at yout TIF image and IMHO you are a tad on the blue side.

In regard to your processing skills they are already good. I was not able to extract the prominences with my poor skills.

For me the most important thing is to learn to judge your atmospheric conditions as I hve ñearned that you have periods of good sharpness and terrible sharpness on the Sun surface which comes from the air turbulence and that means to stare at the monitor and learn this phenomena and this helps you then find focus. Do not turn the focus knob sildly. Watch how focus changes and in the calm periods you will judge focus and elave it there.

For example in my case I just take 480 images over a period of about 30 seconds. I have exposure times which vary between 45 and 52 milliseconds. NO gain but some Brightness, Contrast and Gamma adjustments but only because my acquisition software is able to overlay a false colour mask and that forces me to change the the above 3 parameters. Not overlating the false colour mask needs different adjustments in my case.

Getting the best possible focus is a must and that requires a lot of practice.

Hopefully I could take a look at your raw material ...

See image below.

Dan_SChat_20220118.jpg (728.15 KiB) Viewed 673 times

[DanielD]

Hi Dan,

Interesting. Your coloured inverted image looks far better then your monochrome.

Can you upload somewhere the raw material ? I would gladly take a look into that if you want.

Sure thing, appreciate the help.

https://drive.google.com/file/d/1g9tbEU ... sp=sharing

Edit: I am sure my tuning can be greatly improved. I seem to be very hesitant with my tuning, most of the time not knowing just how well I am on band. My procedure right now is to make sure my highlights are controlled and then just doing the best I can visually. The changes are so subtle to me and I am not yet attuned to see it so well.

Hi Dan,

Thanks. I did take a look at yout TIF image and IMHO you are a tad on the blue side.

In regard to your processing skills they are already good. I was not able to extract the prominences with my poor skills.

For me the most important thing is to learn to judge your atmospheric conditions as I hve ñearned that you have periods of good sharpness and terrible sharpness on the Sun surface which comes from the air turbulence and that means to stare at the monitor and learn this phenomena and this helps you then find focus. Do not turn the focus knob sildly. Watch how focus changes and in the calm periods you will judge focus and elave it there.

For example in my case I just take 480 images over a period of about 30 seconds. I have exposure times which vary between 45 and 52 milliseconds. NO gain but some Brightness, Contrast and Gamma adjustments but only because my acquisition software is able to overlay a false colour mask and that forces me to change the the above 3 parameters. Not overlating the false colour mask needs different adjustments in my case.

Getting the best possible focus is a must and that requires a lot of practice.

Hopefully I could take a look at your raw material ...

See image below.


Dan_SChat_20220118.jpg

Wow, that looks absolutely fantastic! Way better than I can do with it. I have just uploaded the .ser files! So sorry for that

.ser files:https://drive.google.com/drive/folders/ ... sp=sharing

[Montana]

Great additions

Alexandra

[MapleRidge]

Welcome Dan, and your image looks good !!!

Brian

[rigel123]

Hey Dan, great first disk! I worked on your one SER file and I tend to agree with Rainer that you are a tad on the Blue Side otherwise your contrast would have been a bit better on the filaments. Your seeing did not look great which will add to the softness of the image. You did a good job of bringing out the proms, particularly since your histogram was extremely close to the left side of the graph where you can start clipping out some of the fainter proms so I would suggest moving your histogram just a bit to the right to move that edge of the histogram a bit further from the edge of the graph. I used a separate image stretching the proms a lot more and then merged it with the disk image to bring them out a bit better. I burned in your filaments to bring them out a bit more as well. Your overall consistency on the disk looks great!

Edit: Just realized this is a single stack so the lower contrast could be contributed to that which you can adjust in post processing. It will be interesting for other takes on your tuning. It looks pretty good considering it is a SS set up. As I mentioned the consistency across the disk looks pretty good.

Daniel-Solar-Image.jpg (295.59 KiB) Viewed 639 times

[Stardust5858]

Great start Dan, I'm sure you'll get to grips with it. HA does have a learning curve compared to CaK and white light. Thanks for sharing.

[rigel123]

Here is the southern half that I processed more like a SS image. Actually this one had better contrast than the northern image which may have had to do with where the disk was on your chip. Rainer is better at the mosaic than I am so just posting that lower half. Nice details! You caught a nice little surge just south of that large prom too.

Daniel-Solar-Image S.jpg (534.58 KiB) Viewed 615 times

[DanielD]

Here is the southern half that I processed more like a SS image. Actually this one had better contrast than the northern image which may have had to do with where the disk was on your chip. Rainer is better at the mosaic than I am so just posting that lower half. Nice details! You caught a nice little surge just south of that large prom too.

Thank you Rigel! Both looked fantastic, I like how you were able to bring out a lot of detail on the edges! Something I still need to work on. I also so that little surge when editing! Thanks for the feedback!

[rsfoto]

Hi Dan,

I downloaded your two *.ser files and congrats for that fast server service. I was able to download it at an average speed of about 80mbps (~10MB/s).

If you choose a ROI you could make your files smaller. 1000 fames is a good compromise. As that is a ASI 290MM same chip as mine you could use a ROI of let me say 1500 x 950 pixels and still ahve a good overlap. You have a very good tracking.

SER 063502 has a nice ilumination over the whole surface while on SER 63634 you have the Hot Spot on the top of the file.

First thing i noticed is that you possibly changed the exposure time as the frame rate on one is 49 fps and the seocnd has 77 fps. IMHO that is an absolute NO NO when making mosaics. Also I noticed the histogram of both is different.

I also saw this viewing the histogram in the SER Viewer player where the max value of file 63502 was around 210 and file 63634 was around 175. You can easily expose up to 240. https://sites.google.com/site/astropipp/ser-player

Below the comparison

SER_63502_Histogram.JPG (211.2 KiB) Viewed 601 times

SER_63634_Histogram.JPG (195.57 KiB) Viewed 601 times

after that I tried to make a Mosaic from your two images.

Below the history but I was not able to get the proms out. Sorry

Dan_Mosaic_01.JPG (281.72 KiB) Viewed 601 times

As you can see the blending job PS 2022 does is very good

Dan_Mosaic_02.JPG (297.75 KiB) Viewed 601 times

Histogram stretch

Dan_Mosaic_03.JPG (311.73 KiB) Viewed 601 times

Dan_Mosaic_04.JPG (350.66 KiB) Viewed 601 times

Applying Unsharpmask

Dan_Mosaic_05.JPG (382.28 KiB) Viewed 601 times

Rainer

[DanielD]

Hey Dan, great first disk! I worked on your one SER file and I tend to agree with Rainer that you are a tad on the Blue Side otherwise your contrast would have been a bit better on the filaments. Your seeing did not look great which will add to the softness of the image. You did a good job of bringing out the proms, particularly since your histogram was extremely close to the left side of the graph where you can start clipping out some of the fainter proms so I would suggest moving your histogram just a bit to the right to move that edge of the histogram a bit further from the edge of the graph. I used a separate image stretching the proms a lot more and then merged it with the disk image to bring them out a bit better. I burned in your filaments to bring them out a bit more as well. Your overall consistency on the disk looks great!

Edit: Just realized this is a single stack so the lower contrast could be contributed to that which you can adjust in post processing. It will be interesting for other takes on your tuning. It looks pretty good considering it is a SS set up. As I mentioned the consistency across the disk looks pretty good.

Thank you!! I had no idea I captured it at two different FPS. It seems to be my computer which is slowing down at times, I am not sure why. Using firecapture, I am sometimes getting 70FPS then at other times I am getting 40 FPS. It definitely varies, and I do wonder if there is setting that I can change to make sure there is a much smaller difference. I know that day the seeing was not great, been like that for a few weeks now as well. Ill try bumping up my exposures as well, thank you!!

[DeepSolar64]

Dan,
With only an hour to observe or image at your home site do you have a place off site more free of trees to take the scope for more time? It may help you maneuver around clouds and time issues.

James

[Carbon60]

Welcome Dan. Excellent opening image. Very nicely done.

Stu.

[Ivan]

Dan,
Great start.

Ivan