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The Quiet Sun

By dougv  
I haven't uploaded anything for a while and thought I would try something a little different.

Here is a photo of the Sun showing a small sun spot group.
Just at the moment we are at the minimum of the 11 year solar cycle, so there are very few spots to be seen on the Suns surface.

The camera was mounted onto the telescope using a T2 mount.
A home made solar filter was used on the objective lens.
The filter is made from Baader Astro Solar Film which cuts out 99.9% of the light and heat reaching the camera.

The scope has a focal length of 350mm and an aperture of f5.
Shutter speed was 1/1600 sec

Cropped from the original image to 990 x 990 pixels to allow for a 10 pixel white border.

Colour, Brightness, and Contrast adjusted to give a nice shade of yellow.
A little USM to finish.

Hope you enjoy it, and as always comments are welcomed.

Doug Smile

Tags: General Sun Specialist and abstract Digitally manipulated Astro Solar Spot

Voters: User_Removed, KarenFB, Brilane and 25 more

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KarenFB Plus
13 5.3k 174 England
5 Jun 2007 8:54PM
At first glance I thought it was an egg yolk! What an amazing shot, I'm sure I can see it pulsing as I look at it!

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dougv 15 8.4k 3 England
5 Jun 2007 9:01PM
Thanks Karen.
I'm nipping out shortly to try and get a shot or two of Venus and Saturn, although they will be better placed at the beginning of next month fairly close together in the sky just after sun set.
Doug Smile
Brilane 13 5 12 Wales
5 Jun 2007 9:05PM
A clever piece of, scientific, procedure. Well performed.
SimyD 14 143 United Kingdom
5 Jun 2007 9:08PM
Is that sensor dust or sun spots Smile

pennyspike 16 2.1k 29 United Kingdom
5 Jun 2007 9:08PM
I'm glad I opened this, as a thumbnail I thought it was somebody having a bit of a jokeSmile
Are those dots that look like dust the sun spots?
Amazing what you can learn here.
jjmills 14 153 Scotland
5 Jun 2007 9:09PM
Looks quite quiet for sun spots, good image...

dougv 15 8.4k 3 England
5 Jun 2007 9:10PM

Quote:Is that sensor dust or sun spots

Sun spots cheeky!
Not as sharp as I would have liked, but it was my first attempt.
Cheers guys.
bfgstew 13 668 105 England
5 Jun 2007 9:27PM
WOW, amazing capture, well done for getting the sun spots in.
scragend 15 3 Scotland
5 Jun 2007 9:46PM
Not something you see every day - or at least not that close! As you say; it looks very quiet at the moment.

I was amazed that it was a direct image rather than reflected. The only time I've looked at sun spots was the old telescope and cardboard routine - clumsy but safe. Nice one!
dougv 15 8.4k 3 England
5 Jun 2007 10:03PM
The Baader Astro Solar film is very good.
Mind you it ought to be at the price.
It costs 25 for a piece of film A4 size.
I've made a filter for the telescope, two small filters for my binoculars, and I still have a little bit left in case I manage to puncture one of the ones I have made.
It's the first time I have had the 300D hooked up to the scope, so I'm pleased with the result.
Just need to perfect the focusing I think.

Thanks for your interest.
Doug Smile
Alan_Warriner 14 545 England
5 Jun 2007 10:03PM
It also appears to be pulsing to me (must have the same monitorSmile)

Different and well done
kevski 13 14 United Kingdom
6 Jun 2007 11:56AM
What a stunning shot of the sun.Very impressive.
dougv 15 8.4k 3 England
6 Jun 2007 2:08PM
Thanks everyone!
I'm glad you liked it.
I'll see what other Astro pics I can come up with.
9 Jun 2007 4:22AM
Pretty cool image Doug, would be interested to see if you could get a half decent one of Saturn

Blenkinsopp 13 320 4 England
11 Jun 2007 9:28AM
amazing shot - way beyond me
imagio 13 12 1 England
20 Jun 2007 6:51AM
Awesome image Doug..

C_Daniels 14 399 10 England
24 Jun 2007 8:24PM
At first I thought it was the moooon....


Interesting picture and documentation.
dougv 15 8.4k 3 England
24 Jun 2007 9:51PM
Thanks everyone.
Doug Smile
looboss 12 3.1k 7 United Kingdom
12 Aug 2007 11:13PM
Sure there not dust spot on your sensor LOL!

great and original!
paulcr 14 1.5k 9 Ireland
13 Aug 2007 5:46PM
Thats excellent. First I've seen here like it. Paul
wipka84 11 43 England
6 Mar 2008 8:57AM
Really interesting, something that I havent seen anyone on here do so original too. Going to all that effort really paid off!

Its' amazing how bright the sun actually is, 99.9% light filter and you still need a 1/1600th shutter speed.
Gary_Macleod 15 166 Scotland
2 May 2008 11:10PM
gossyboy 11 460 United Kingdom
23 Jun 2008 6:51PM
Clever stuff............
12 Jan 2009 11:28AM
Fascinating shot.
dougv 15 8.4k 3 England
12 Jan 2009 3:36PM
Thanks Stuart I'm glad you like it.

Doug Smile

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