The Sun

SteveDallas · 05-25-2003, 02:07 PM

This image shows the sun at 5:24PM EDT on May 19 (the ONLY clear day of the entire month at my location).

Taken with my Meade ETX-70AT telescope, a Scopetronix STWA14 telescope eyepiece/digital camera adapter (intended to take pictures of the lunar eclipse!), Scopetronix solar filter, and Nikon Coolpix 999 camera.

SteveDallas · 05-25-2003, 02:18 PM

Hmmm. There's a fair amount of artifacting (concentric sircle patterns) in this image as I see it here. I do NOT see the same pattern on the original photo... it looks much better. Any thoughts on why it's different?

Tobiasly · 05-25-2003, 04:01 PM

The picture looks a little blurry to me, but I don't see the artifacting you're referring to. Are you using a browser that automatically resizes large pictures?

SteveDallas · 05-25-2003, 06:45 PM

I'm using Mozilla 1.3... I don't think it does. You're right, it's a hair blurry... it's not easy to get the exact focus right between the telescope, and the camera. I need some practice!

Billy · 05-26-2003, 12:02 AM

I desire to eat it. I think it must be sweet.

SteveDallas · 05-26-2003, 10:01 PM

Mmmmmmmm fooood!

Well maybe this is better. I used some processing software to combine elements of three separate exposures, then I sharpened and compressed the brightness range to make the sinspots darker--but it also added some grayness around the edges. (I'm not sure this exposure-combining technique is even worthwhile for solar pics. Usually it's used for things like star clusters where there is really just black and white and not much else.)

Undertoad · 05-26-2003, 10:55 PM

And when viewed from the side:

wolf · 05-26-2003, 11:02 PM

mmmmmm Flan .....

juju · 05-26-2003, 11:22 PM

ahh ahh yes to yes
to ahh ahh to yes
why the sun?
why the sun?

SteveDallas · 05-27-2003, 12:05 PM

Hey! You forgot to throw in some blackberries to stand in for the sunspots!

e unibus plurum · 05-27-2003, 03:05 PM

Quote:

Originally posted by SteveDallas
to make the sinspots darker

You devil, you!

05-25-2003, 02:07 PM	#1
SteveDallas Your Bartender Join Date: Jan 2002 Location: Philly Burbs, PA Posts: 7,651	The Sun This image shows the sun at 5:24PM EDT on May 19 (the ONLY clear day of the entire month at my location). Taken with my Meade ETX-70AT telescope, a Scopetronix STWA14 telescope eyepiece/digital camera adapter (intended to take pictures of the lunar eclipse!), Scopetronix solar filter, and Nikon Coolpix 999 camera. Attached Images Last edited by SteveDallas; 05-25-2003 at 02:16 PM.

05-26-2003, 12:02 AM	#5
Billy Professor Join Date: May 2003 Location: Germany Posts: 1,462	It loos like one cake I desire to eat it. I think it must be sweet.

05-26-2003, 10:01 PM	#6
SteveDallas Your Bartender Join Date: Jan 2002 Location: Philly Burbs, PA Posts: 7,651	Mmmmmmmm fooood! Well maybe this is better. I used some processing software to combine elements of three separate exposures, then I sharpened and compressed the brightness range to make the sinspots darker--but it also added some grayness around the edges. (I'm not sure this exposure-combining technique is even worthwhile for solar pics. Usually it's used for things like star clusters where there is really just black and white and not much else.) Attached Images

05-25-2003, 02:18 PM	#2
SteveDallas Your Bartender Join Date: Jan 2002 Location: Philly Burbs, PA Posts: 7,651	Hmmm. There's a fair amount of artifacting (concentric sircle patterns) in this image as I see it here. I do NOT see the same pattern on the original photo... it looks much better. Any thoughts on why it's different?

05-25-2003, 04:01 PM	#3
Tobiasly hot Join Date: Mar 2002 Location: Jeffersonville, IN (near Louisville) Posts: 892	The picture looks a little blurry to me, but I don't see the artifacting you're referring to. Are you using a browser that automatically resizes large pictures?

05-25-2003, 06:45 PM	#4
SteveDallas Your Bartender Join Date: Jan 2002 Location: Philly Burbs, PA Posts: 7,651	I'm using Mozilla 1.3... I don't think it does. You're right, it's a hair blurry... it's not easy to get the exact focus right between the telescope, and the camera. I need some practice!

05-26-2003, 10:55 PM	#7
Undertoad Radical Centrist Join Date: Jan 2001 Location: Cottage of Prussia Posts: 31,423	And when viewed from the side:

05-26-2003, 11:02 PM	#8
wolf lobber of scimitars Join Date: Jul 2001 Location: Phila Burbs Posts: 20,774	mmmmmm Flan .....

05-26-2003, 11:22 PM	#9
juju no one of consequence Join Date: Jun 2001 Location: Arkansas Posts: 2,839	ahh ahh yes to yes to ahh ahh to yes why the sun? why the sun?

05-27-2003, 12:05 PM	#10
SteveDallas Your Bartender Join Date: Jan 2002 Location: Philly Burbs, PA Posts: 7,651	Hey! You forgot to throw in some blackberries to stand in for the sunspots!

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