View Full Version here: : Sun 16th October 04:40UT
von Tom
16-10-2011, 04:28 PM
Here's the Sun this arvo from Brisbane.
Tom
orestis
16-10-2011, 04:50 PM
:eyepop:Wow,
That is a senstational shot Tom,Well done:thumbsup:.
What telescope/filter where you using the colour is realy nice:D.
I could some of the bigger sunspots using the pinhole method this morning.I took a pic but it is very very bad compared to yours.but I was still suprised to see it using a simple pinhole method.
Thanks for posting
regards Orestis
Ps-Its a Great day for viewing the sun.
Dennis
16-10-2011, 06:20 PM
Nice work Tom! An open day at work saw me otherwise engaged today…:sadeyes:
Cheers
Dennis
Derek Klepp
18-10-2011, 07:37 AM
Tom have you used an off axis Solar filter on your 12". I think about 100 mm is optimum for that aperture. The seeing is so variable here that the smaller aperture will probably give a much sharper view of the Sunspots.Thanks for the views.
Derek
von Tom
18-10-2011, 08:17 AM
Hi Orestis. I used a Canon EOS 600D with 12" Sky-Watcher Goto Dobsonian and a full aperture Mylar sheet filter. I shot in monochrome "green filter" mode, and then added the colour in Photoshop later. The filter gives an orange colour cast even though the Sun is white.
Derek I have tried an off-axis filter on the 12" previously but found that the clarity wasn't as good for me as the full aperture filter because there seemed to be a bit of directional blurring depending on the positioning of the off-axis aperture. I am still experimenting on the best way to capture the Sun using the Dobsonian and DSLR.
Tom
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