Solar images 20th July 14:30

[sologuitarist61]

Not much happening today.

Sorry about the blotchiness, too much high cloud!! - or is it? It is on all the subs for the larger shot and the clouds were moving faster than that - is it the start of something new? Have no idea.

[Steve Ward]

Looks like dirt or dust to me , I'm waiting for a gap now so i'll see if it's still there.......

[sologuitarist61]

That is what I thought so but I have a self cleaning sensor, but took the following just as a test (in focus against a plain piece of paper) but cannot see anything

So have just gone back out and tried again with this result

Will be interesting to see what you come up with.

[Steve Ward]

Pouring down here still so no shot from me today....

Still looks like a smear of grease or similar to me , and there are numerous little dust/dirt marks when viewed close up .

I would give every thing a clean in the image train first , at least then you'll get a nice pic if your "possible feature" goes ballistic overnight and surprises us both in the morning..............

[Bizibilder]

That's AR1525 you have captured there - lucky you - actually seeing the Sun this week!

[Ganymede12]

About that smudgy thing. I have seen it on the sun for a while now. I thought It was my optics but, you never know we could be on to something here!

The smudge is just above the sunspots. Can you see it?

[Photosbykev]

check for dirt on your sensor by stopping the aperture down to f22 and then in Av mode shoot a plain patch of sky, doesn't match if it's cloudly or not. Then stretch the histogram of yur image to see any dust bunnies. It doesn't matter if the lens is in focus, in fact it is better if the lens is out of focus to check for dust.

[sologuitarist61]

About that smudgy thing. I have seen it on the sun for a while now. I thought It was my optics but, you never know we could be on to something here!

The smudge is just above the sunspots. Can you see it?

Certainly in the same area as mine Ant .... strange!

[sologuitarist61]

check for dirt on your sensor by stopping the aperture down to f22 and then in Av mode shoot a plain patch of sky, doesn't match if it's cloudly or not. Then stretch the histogram of yur image to see any dust bunnies. It doesn't matter if the lens is in focus, in fact it is better if the lens is out of focus to check for dust.

Thanks Kev - have only just seen your post and now the skies are dark so have set up in doors at have imaged a painted door as you have suggested and stretched it in much the same was as I did for the sun, and have come up with the following, which looks OK to me. No sign of any shadowing and the sensor looks pretty clean to me but I would appreciate your thoughts.

[Steve Ward]

Mine from yesterday and SDO from today........!

Mine.

Theirs.

? ? ?

[sologuitarist61]

Got to be the scope or the wedge then, will check it out, thanks Steve

[sologuitarist61]

Yes, got it. There was a small bit of 'something' actually on the wedge surface which came away easily, so will try again later today and see if that has dealt with the problem.

[Steve Ward]

Glad you've found it , and hope it's as clear down there as it is up here today...........

[sologuitarist61]

Yes thanks Steve.... unfortunately it would appear from my thread today, that wasn't my only problem.

[Montana]

Fabulous

I hope you get the smudge sorted

Alexandra