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Here comes the Sun!

Posted: Sat Aug 08, 2015 8:13 pm
by rwilkinson
Even if we didn't get much of a view of the Sun last Tuesday, it made a better appearance this afternoon, allowing me to experiment with our Trust WB5400 webcam on the back of my TS70ED refractor.
With its 420mm focal length, I could just fit the whole Sun onto the CCD:
sun_8aug.png
Sun on 8-Aug: stack of 150 frames.
sun_8aug.png (245.33 KiB) Viewed 4604 times
I used the AutoStakkert! program (as recommended by Damian Peach) for stacking and then exported a .TIF file into IRIS for the wavelet filtering.
I used a "white light" filter (made from AstroSolar film) on the front of the telescope, and the video was shot in monochrome, so I added the "warm" colour-balance using IRIS.

Re: Here comes the Sun!

Posted: Sun Aug 09, 2015 9:53 am
by bbones
Nice one Ross,

Re: Here comes the Sun!

Posted: Sun Aug 09, 2015 10:52 am
by cstone
Good shot!

Re: Here comes the Sun!

Posted: Sat Aug 22, 2015 4:48 pm
by rwilkinson
The "quiet" side of the Sun was turned our way last weekend, but today there was a very active sunspot area on view:

Here comes the Sun (in Norfolk)

Posted: Mon Sep 14, 2015 7:48 am
by rwilkinson
Yes, we did get to see a fair amount of Sun from the Norfolk star-camp this year. 8-)
Although it was raining when we arrived on the Tuesday, by the following day (Weds 9th) it had cleared up nicely, so I tried some solar imaging:
sun_9sep_white.png
Sun on 9-Sep using Baader AstroSolar (white-light) filter on my 70ED refractor.
AVI sequence captured on Trust WB5400 webcam and processed in IRIS
sun_9sep_white.png (191.95 KiB) Viewed 4420 times
sun_9sep_coronado.png
Sun on 9-Sep using the BAS Coronado SM60 hydrogen-alpha scope.
AVI sequence captured on Trust WB5400 webcam and processed in IRIS
sun_9sep_coronado.png (204 KiB) Viewed 4420 times
Then the following day I borrowed Keith's Lunt solar telescope and had a go with that:
sun_10sep_lunt.png
Sun on 10-Sep using Lunt hydrogen-alpha scope.
AVI sequence captured on Trust WB5400 webcam and processed in IRIS
sun_10sep_lunt.png (281.07 KiB) Viewed 4420 times
(The sun was even quieter by then, so I increased the gain in processing the prominences to see what I could detect)