From: "doobisary" <tjp314@pacbell.net>

Date: May 29, 2012 10:27:55 AM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: Annular eclipse, how to process?


Hi Milton:


I did try that, and you're right, it doesn't appear to like the changing shape of the sun.


In a pinch, I could use Photoshop to align a bunch of layers to a base layer, then save them after shifting them around manually.  For movies of only a few hundred images, that might not be too bad.  But it will be time consuming, and I just got back to work after a week and a half off.


-Tim.


--- In Astro_IIDC@yahoogroups.com, "milton_aupperle" <milton@...> wrote:


Hi Tim;


You might want to try "Images To Aligned Movie..." under the "Proceesing" menu in Astro IIDC (see page 58 of the Astro IIDC 4.08.00 manual for description).


However, I don't think this will work with an object that changes brightness / shape.


It will not field de rotate the images either.


HTH..


Milton Aupperle


--- In Astro_IIDC@yahoogroups.com, "doobisary" <tjp314@> wrote:


Okay, that's pretty neat, but I have two problems:


1.  I can't figure out how to align the images in Astro IIDC WITHOUT stacking them, so when I make a movie out of them, the sun doesn't jump around due to my polar alignment being off and an occasional tracking issue (sometimes my iOptron controller would track too fast or slow, or even stop - like when it thought the scope was pointing below the horizon just before sunset - and I compensated with the fast/slow RA buttons).


2.  I'd like to rotate the images so that the horizon is horizontal, because where I was observing, sunset started just before 4th contact.  When I rotate the frames in Timelapse, the sun gets cropped inside the limb.


-Tim.


--- In Astro_IIDC@yahoogroups.com, "doobisary" <tjp314@> wrote:


Darryl:


Thanks, I'll look into that!  I like that I can use Astro IIDC to batch process all the frames before making a video, and still preserve the original raw video from Astro IIDC.


-Tim.


--- In Astro_IIDC@yahoogroups.com, "mpjequinox" <groups@> wrote:


Hi Tim,


I have written a little app for combining images into a movie. It is really designed for creating time lapse movies, but it does have some features, like the ability to skip frames, that you might be able to use. It is available in the Mac AppStore named "Time-Lapse" for $5. You can download the manual first (www.microprojects.ca/software/Time-Lapse.pdf) to see if you can make use of its features.


Darryl



--- In Astro_IIDC@yahoogroups.com, "doobisary" <tjp314@> wrote:


Sounds neat!  Okay, well I left my computer running all night and had Astro IIDC save all the frames out as separate images.  I think I might select every 30th or 60th frame (original captured at 1FPS, 8406 frames!) to make a movie of the whole event, then make another of the frames around the annular phase and of the sunset, which started just before 4th contact.


-Tim.


--- In Astro_IIDC@yahoogroups.com, Milton Aupperle <milton@> wrote:


Hi Tim;


I had written an app to do that years ago, but it won't work on intel Macs.


It would create reference movies form the main movie. A reference movie doesn't contain media, so it's only a few kilobytes and can refer to any length / size of movie. 230 ref movies would be maybe 200 kilobytes.


I'm on vacation for the next week or so and won't be back until after the Venus transit.


TTYL..


Milton Aupperle


On 2012-05-23, at 3:37 PM, doobisary wrote:


Hi Milton:


How do I break the movie into chunks?  I'd like to preserve the original so I can try other processing later, so I'll likely have to wait until I'm home and can make a duplicate onto an external hard drive (I don't have room on my laptop).


-Tim.