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Old 07-03-2008, 10:23 AM
mark3d
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mark3d is offline
 
Join Date: May 2007
Location: Adelaide
Posts: 268
question about planetary detail

i understand that photographs of DSOs are more spectacular than the objects appear visually, because the long exposure catches much more light than our eyes can.

with planets though, i dont see how this can be as much of a factor - planets are so bright that any photo would have to be short exposure.

therefore i dont understand how a 12" dob can take images like this:

http://www.iceinspace.com.au/mygalle...turn-150px.jpg

but all we see with a 10" dob is a small white disc with lines out the side? granted we are only looking at 150x, and the seeing has not been great, but there is a huge difference. is the photo just taken with very high magnification?

if thats the answer, i have more EP shopping to do!

so far the DSOs have been very impressive but the planets a bit disappointing.

if i could see images like that photo i would be ecstatic! if its just a combination of getting the right conditions with the right magnification then thats a challenge im happy to undertake

Last edited by mark3d; 07-03-2008 at 10:36 AM.
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