Sunday, September 17, 2006
15:22, overprocessed disc, but it matches the prominence frame nicely, also uneven illumination is minimized.
15:32, this one is way oversampled, 5x barlows used with Borg 45ED, but at least it told me that at this image scale, the amount of detail is superb. All dust revealed due to the excessive magnification.
Sunday, September 10, 2006
Tested to scale up with the Kenko teleconvertor, it fails entirely and the solar disc couldn't be focused sharply, due to the very poor optics of the teleconvertor. So, the concept is not a problem but the implementation due to the poor lens. Sounds like a good telescope with a good eyepiece is a better bet.
Cloud covered very soon, hope I will be able to pump up the power to take some closeup active region shots!
I got it finally, but the sun was too low, poor seeing and transparency.
Also tested is the webcam trick, but the image is too bad for even pointing.
Saturday, September 09, 2006
Friday, September 08, 2006
It's harder than I thought: when there's cloud, it's hard to adjust the exposure to correctly record the shadow of the Earth from the moon, since it's hard to distinguish between shadow of the Earth and shadow of the cloud. Also, cloud would be moving all the time with variable thickness.
Anyway, it's a nice experience.
To address this issue, I intentionally overexposed a few shots, to see which part of the lunar disc is really black, or just a effect of cloud and underexposure.
All shots are taken with Borg 45ED, DMK 31AF03, no tracking. Thus it is an example to show field rotation as well.
more photographs pending..