Photographs for use in the field
Posted 03 April 2013 - 02:01 PM
Posted 03 April 2013 - 03:38 PM
Bill in Flag
Posted 03 April 2013 - 04:04 PM
Posted 03 April 2013 - 05:46 PM
The much less strongly hued continuum from star clusters and galaxies is much less affected by a non-matching band pass, and so any images not too strongly color biased will be reasonably faithful.
The foregoing concerns color. But contrast in the image can be important. Best if not too strongly stretched, otherwise subtle contrasts become greatly exaggerated, and brighter parts of the object can become saturated, or 'burned out'.
Posted 04 April 2013 - 05:31 AM
I've been wanting to start using photographs while observing as a means for (hopefully) being able to detect more detail. I'm looking for a website with images that are comparable to what would be seen at the eyepiece.
I don't think that's possible; cameras and human eyes see things very differently. Sketches do a much better job of capturing what you actually see through an eyepiece, but even they inevitably fall far short.
I do find photos of galaxies to be a useful guide to visual observing. However, you have to accept the fact that most of what's shown in the photo won't actually be visible, and learn to guess what will and what won't.
Posted 04 April 2013 - 07:22 AM
Posted 04 April 2013 - 03:42 PM
Posted 04 April 2013 - 03:49 PM
Here's a sample page of the Whirlpool.
Posted 04 April 2013 - 04:47 PM