NEW SUN-SPOT & AR2781 6th November 2020

this is the main message area for anything solar :)
Post Reply
EGRAY_OBSERVATORY
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6871
Joined: Mon May 18, 2020 4:45 pm
Location: Essex, S.E.England
Been thanked: 4900 times

NEW SUN-SPOT & AR2781 6th November 2020

Post by EGRAY_OBSERVATORY »

Ok, after a short session this morning, due to a slow-moving cloud-bank from the South, these images are the first that include a Barlow.

(The TelVue 2.5X Powermate failed the first test, due once-again to those Newton Rings, which will be worked-on in due course)...
So a new Revelation 2.0X succeeded in both Cal-K and Ha, but further test needs be completed and with a Meade 5X Telexstender...

Newton Ring image showed a nice prom, but bad image...

White light with the ED80T and Hershel Wedge has proved that a new Spot has been detected and is arrowed.

Maybe some more images (to be processed yet), may appear later this evening

CLEAR SKIES & PLEASE KEEP SAFE
Terry
Attachments
Capture_00001 2X 1136z.jpg
Capture_00001 2X 1136z.jpg (122.6 KiB) Viewed 465 times
2020-11-06 1148z CAK+2XRev.Barlow.jpg
2020-11-06 1148z CAK+2XRev.Barlow.jpg (753.01 KiB) Viewed 465 times
2020-11-06 1111z Cak + 2X Barlow.jpg
2020-11-06 1111z Cak + 2X Barlow.jpg (906.17 KiB) Viewed 465 times
2020-11-06 1059z WL+ HW.jpg
2020-11-06 1059z WL+ HW.jpg (45.72 KiB) Viewed 465 times


EGRAY_OBSERVATORY
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6871
Joined: Mon May 18, 2020 4:45 pm
Location: Essex, S.E.England
Been thanked: 4900 times

Re: NEW SUN-SPOT & AR2781 6th November 2020

Post by EGRAY_OBSERVATORY »

The White Light image with the AR???? spot (as a new one) is of course AR2780 coming back to life !!! Shame I didn't check first...

Terry


User avatar
DeepSolar64
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 18823
Joined: Thu Sep 05, 2019 12:19 am
Location: Lowndesville S.C.
Has thanked: 17572 times
Been thanked: 16694 times

Re: NEW SUN-SPOT & AR2781 6th November 2020

Post by DeepSolar64 »

That small AR12780 spot has been there at least since yesterday. It showed up on my iPhone images both yesterday and today.


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces

Image Visual Observer
" Way more fun to see it! "
User avatar
ffellah
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 11171
Joined: Mon Oct 27, 2014 6:46 pm
Location: Westport, CT USA
Has thanked: 9144 times
Been thanked: 6025 times

Re: NEW SUN-SPOT & AR2781 6th November 2020

Post by ffellah »

Great job of capturing AR2781 and its action, Terry !

Franco


User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6161
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 9411 times
Been thanked: 5570 times

Re: NEW SUN-SPOT & AR2781 6th November 2020

Post by rsfoto »

Hi Terry,

You need to rotate 90° CW and then mirror vertical your image.

You are too conservative in stretching your images. Look at the simple histogram stretch I made by just increasing the white side. Also looks like you have some dust bunnies somewhere. ;)

;)


2020-11-06 1059z WL+ HW.jpg
2020-11-06 1059z WL+ HW.jpg (224.32 KiB) Viewed 442 times


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
EGRAY_OBSERVATORY
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6871
Joined: Mon May 18, 2020 4:45 pm
Location: Essex, S.E.England
Been thanked: 4900 times

Re: NEW SUN-SPOT & AR2781 6th November 2020

Post by EGRAY_OBSERVATORY »

Thanks Rainer for the advice and I was aware of the rotational problems with today's imagery after I posted. I have to get used to the ZWO cameras as the previous cameras seemed to not-have the same problem.

I was being rushed today by an unexpectedly long phone call, where I rushed to process the images after, so less haste = less mistooks !!

As far as the Dust Bunnies are concerned, I believe these are coming from within the Orion ED80T-CF, as there's clearly lots of debris on the inside of the front-element and inside the scope. Just one of many faults of ORION, which have shown some very bad manufacture in components & design, which I have tried to rectify. It is quite likely than when the scope slews to the Sun, debris maybe falling onto the HW.

I should have spent twice the money on a much better manufacturer for the same or similar scope, but the well known supplier recommended the Orion ED80T-CF ?? I have changed from that supplier and manufacturer. I think I'll look for a decent manufactured scope for white-light etc...

Anyhow more images will be posted separately - tomorrow.
Cheers
Terry


User avatar
marktownley
Librarian
Librarian
Posts: 42272
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 20435 times
Been thanked: 10245 times
Contact:

Re: NEW SUN-SPOT & AR2781 6th November 2020

Post by marktownley »

Nice shots Terry. Those bunnies look to me, by their size, that they are ahead of the chip. Does the GPCam have a protective window ahead of the chip itself?

Just checking here, when you stack images AS3 is outputting a 16 bit tiff file? This is post processed in PSP9 as a 16 bit file and then converted to a jpeg for the web?


Image
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!
EGRAY_OBSERVATORY
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6871
Joined: Mon May 18, 2020 4:45 pm
Location: Essex, S.E.England
Been thanked: 4900 times

Re: NEW SUN-SPOT & AR2781 6th November 2020

Post by EGRAY_OBSERVATORY »

Thanks Mark. Yes Tiff files are the results of AS (16 bit) as need to keep the res. high, before PSP9/2018 processing - then converted to JPG.

The WL/ORION ED80 certainly has lots of rubbish in and it will need to be removed (or the front-element removed to clear-out that rubbish).

I do have both air-blowers and specialised vacuum facilities for that purpose. Quite possibly that dust has settled on the camera, so that will be
investigated with a pc-microscope facility and obviously will look as to why that rubbish is either getting into the scope or by bad-manufacture, which I have already had problems with from the outset - around two-years ago...

I now have a spare Altair GPCAM, so a simple test with a white-card should prove whether or not...

I did ask the well-known supplier to pass my comments to Orion about the earlier problems, but got no reply, so will never deal with that supplier again and indeed no-need to now anyway - now.

Cheers
Terry


User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6161
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 9411 times
Been thanked: 5570 times

Re: NEW SUN-SPOT & AR2781 6th November 2020

Post by rsfoto »

marktownley wrote: Tue Nov 10, 2020 4:25 pm Nice shots Terry. Those bunnies look to me, by their size, that they are ahead of the chip. Does the GPCam have a protective window ahead of the chip itself?

Just checking here, when you stack images AS3 is outputting a 16 bit tiff file? This is post processed in PSP9 as a 16 bit file and then converted to a jpeg for the web?
Hi,

At last step before saving for web I suggest to check the histogram in order to see if there is waisted space = empty in the histogram. This empty space creates what look like a soft filter used in Romantic photography :lol:

Look at the example below

On the left side an image with empty space in the histogramm and on the right side stretched until the slider gets to the first pixel in the image with a value on the black side as well as on the white side. YOu can see that the whites are white and the black are black now and a slight increase in contrast and with it details.

Just an idea to improve a bit the images.

Another big problem we have is also monitor calibration or how we adjust our monitor which is the famous colour temperature. sRGB is normally a good compromise but better is a real calibration on maybe 5000°, 5500° or 6000° which I do every 2 weeks. After a certain age the monitor stabilizes and only minor readjustments are necessary.

Another important thing is to save the JPG converted to sRGB profile.

https://learningdslr.com/back-to-basics ... 38dcf7f4cd

IMHO

Two more interesting links

https://cameratico.com/color-management/firefox/

https://cameratico.com/tools/web-browse ... ment-test/

Histogram_Check.jpg
Histogram_Check.jpg (741.9 KiB) Viewed 379 times


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
EGRAY_OBSERVATORY
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6871
Joined: Mon May 18, 2020 4:45 pm
Location: Essex, S.E.England
Been thanked: 4900 times

Re: NEW SUN-SPOT & AR2781 6th November 2020

Post by EGRAY_OBSERVATORY »

Thank Rainer for that. I will save this post and the other relevant posts of yours and Mark's, so when I'm back in the observatory, I will need to check various settings as well as re-process some original camera downloads to apply your suggestions. I can certainly check the various monitor calibrations to make sure they are all the same and correct. That might also be a reason why some images were apparently too dark...

Thanks again
Regards
Terry


Post Reply