NexStar AP Graduates Images and Discussions
Posted 25 December 2012 - 12:46 PM
Isn't left and right swapped over though??
Posted 26 December 2012 - 04:49 AM
Congratulations also to Milby on his fine images of the Rosette and the Horse Head ! :bow: They get ever better !
Posted 27 December 2012 - 07:11 PM
As a result, and to prevent complete "stir craziness", I've spent the afternoon reworking a few AVIs of Saturn captured back in May of this year. (This is in line with my exploration of latent capacity within my webcam before deciding to move to something more sophisticated for planetary imaging).
Celestron 8i mounted on a Skywatcher HEQ5Pro + X2 Celestron Barlow.
15 fps X 180 secs. using a Philips SPC900NC webcam.
Stacked and processed in Registax 5 completed in P/Shop CS2
Thank you for viewing.
Posted 27 December 2012 - 10:35 PM
Posted 28 December 2012 - 06:32 AM
milby, theres no way of sharing fits files on this forum given file size restrictions,there are third party sites that allow you to link to them, where you can upload fits files to share, however many including myself wont do that as you have to give email and possibly other personal information, for security reasons then, you can understand why people are reluctant to share files when you cannot be certain whats happening to your personal details.
Posted 28 December 2012 - 07:50 AM
On your other comment though, and bearing in mind what you say about the problems in supplying FITS format, would it not perhaps be possible to provide an image, (of whatever object), purely stacked from its subframes in, let's say, Registax, but without any further processing, converted to jpeg format for the various interpretations according to Milby's interest ?
I know it's not an ideal format, but perhaps better than none and surely capable of producing the probable variation in processor techniques which appears to be of interest here ?
(Of course, the quality of the outcome would depend entirely on the quality of the initially submitted subframe stack).
Possible ? Worth doing ? What do you guys think ?
Posted 28 December 2012 - 08:19 AM
milby`s mention of fits files,and i am assuming, was mentioned on the grounds, that with fits files, we dont get any compression of data, therefore, as we all know, its the best format to allow full processing of data captured.So i dont think milbys mention of us sharing fits files was anything other than what he said, milby can correct me if i`m wrong of course.
It is of course possible, to stack and align our fits files as you mentioned, then using the stacked fits file,totally unprocessed, convert the fits file to jpeg for posting and allowing others to manipulate the data, but again, being so compressed, we are never going to get the best out of the data in jpeg format, even if the converted jpeg is totally unprocessed.
milby of course can jump in and perhaps just clarify the situation, as to whether as i suspect, its the sharing of fits files is what he means.
Posted 28 December 2012 - 10:55 AM
What you say is very true.
Unwanted jpeg compression is certainly undesirable but then if we, as a forum group, have already been interactive in the past in "reworking" (jpeg) images produced and posted here by each other to (hopefully) good effect and have perhaps learnt a little more of processing techniques in passing, then isn't this "messing" (with permission of course), worthwhile .... (even with jpegs) ?
So saying and I thank you for the appreciation of my Saturn rework, but I note from your email that the final colour was not to your particular taste. As always therefore, Tom, and in keeping with the spirit of this post, please feel free to adjust it ! :rofl2:
Posted 29 December 2012 - 10:00 AM
not much point my messing and adjusting your Saturn Tel, you know full well i usually steer clear of colour images as i have no skills in that direction, give me mono anyday, far less of a problem :rofl5:
Having said that, and given that like you, i have no new data to play with, i too went back and found a Saturn AVI capture i made back in 2007, (i think it was 2007).
Just had a play with my old Saturn data and came up with this,still not happy with the colour though.
Posted 29 December 2012 - 10:07 AM
Colour looks fine to me
Posted 29 December 2012 - 10:26 AM
Was that taken with your now defunct "Neximage" back in '07 ?
Posted 29 December 2012 - 10:45 AM
Hi Tel, many thanks to you too for your kind comments, yes i think it must have been the old original NexImage planetary ccd,(and we both know what happened to that, lol) used with my 6" f/8 yard cannon,(Skywatcher refractor) and i think a 2X barlow, its been so long ago since i`ve done any lunar or planetary i just dont remember that well, i can say though, that this was the best capture i made of Saturn in all the time i imaged it,this was captured at 10 frames per second on a very clear and stable night.
EDIT...just checked the details on the AVI,this Saturn image was aquired on the 12th May 2007 at 10.33 pm at 10 frames a second, 601 frames captured, and all frames used in the stacking
Posted 29 December 2012 - 12:47 PM
Thanks for posting.
Posted 30 December 2012 - 08:39 AM
Posted 31 December 2012 - 04:15 AM
Best wishes for a very happy New Year to you and yours,
Posted 31 December 2012 - 11:06 AM
Very many thanks Tony, much appreciated. Tom's beats me hands down for resolution though ! :bow:
Best wishes for a very happy New Year to you and yours,
Many thank`s for that kind comment Tel, but in all truthfulness, i got very lucky that night, in that i had a very rare night of good seeing, does not happen very often, simply a case of right place at the right time me thinks.
Posted 31 December 2012 - 11:25 AM
Posted 31 December 2012 - 01:56 PM