Blinking Olde Images
Posted 06 July 2013 - 05:00 PM
This is a great source of pictures of deep sky objects that are over 100 years old (the pictures, not the deep sky objects). It is fascinating to copy pictures from this publication and paste them over modern pictures in Photoshop. I carefully rescale them to match the image scale and orientation of the two images and then blink them by clicking the layers on and off. You can easily spot stars with high proper motions and possible variables or asteroids. This is a great way to pass the time waiting for the weather to clear.
And yes, there are several stars near M27 that show high proper motion!
Posted 07 July 2013 - 09:43 AM
Posted 07 July 2013 - 10:55 AM
Posted 08 July 2013 - 01:09 PM
Posted 08 July 2013 - 07:36 PM
Certain sounds one never forgets.
Now, if only the wonderful scent of a library full of old plates could be captured and replayed...
Posted 10 July 2013 - 03:08 AM
I imagine there are many thousands of plates stashed around the world, some scanned, some not yet. It would be a good crowdsource / Zooniverse-type project if someone could set up a good sofware chain. Maybe the Tortilla plate solver or another automatic image alignment program first, and then automated marking of possible items of interest, then eyeballs.
Is there any blink software for amateur use?
Posted 10 July 2013 - 11:48 AM
Thank you again for sharing.