Sun March 29th - PST

RichardJ (Richard) · #1 29-03-2012, 10:18 PM

Hi,

Using eyepiece projection (17mm Plossl), Canon 450D and my PST took this image of the sun today. Processing was done in CS5. Unfortunately patchy cloud was around for most of the day.

Thanks for looking.

RichardJ.

Shark Bait (Stu) · #2 30-03-2012, 03:31 AM

I had a look at the Sun yesterday with a Baader white light filter. Interesting to see an image taken around the same time but with so much more detail. Thanks for posting.

RichardJ (Richard) · #3 30-03-2012, 04:13 PM

Hi,

I've done some more work on the image and have uploaded the results.

regards,

RichardJ

Shiraz (Ray) · #4 31-03-2012, 10:21 AM

classy image Richard. for interest, how many subframes did you need to combine to get this result? regards ray

RichardJ (Richard) · #5 31-03-2012, 12:21 PM

Hi Ray,

Could not fit the whole Sun in the one field, so did upper part and then lower part. 40 subframes (at 1/60 sec exposure each). Stacked and processed the images in Registax and then combined the two parts in CS5.

regards,

Richard

lepton3 (Ivan) · #6 31-03-2012, 01:11 PM

Richard,

That's a really impressive image. Is that with a standard 40mm single stack PST?

Surely you needed two different exposures to get the disc and the prominences?

Really nice work on stitching together the mosaic.

-Ivan

RichardJ (Richard) · #7 31-03-2012, 02:35 PM

Hi Ivan,

Yes, a single stack 40mm PST.

Not different exposures. Manipulating the levels brings out the prominences which you can combine (after some colour correction etc)with an image showing the disc detail to give the final result.

regards,

Richard.