dejavu Posted December 19, 2006 Share Posted December 19, 2006 Single Image of m42 taken through my ed80, 61 sec exposure, ISO 1600, Date/Time 18/12/2006 23:23:45, Canon eos 400d.. I managed to sort out the alignment prob I had the last time I took thescope/mount out, It turned out I was inputting the date the wrong way when I should have being doing it in the US format e.g month/day/year not day/month/year :nono: Link to comment Share on other sites More sharing options...
CELESCOPE Posted December 19, 2006 Share Posted December 19, 2006 excellent image that DJ 1 min , that shows some amazing detail for that ., nice round stars as well . keep them coming DJ .Rog Link to comment Share on other sites More sharing options...
geppetto Posted December 19, 2006 Share Posted December 19, 2006 Lovely balanced imageNice scale, detail and colour and the tracking's great Link to comment Share on other sites More sharing options...
moondog Posted December 19, 2006 Share Posted December 19, 2006 That's an excellent wide shot of M42 - especially for a 61 sec exposure.The Americans' have a lot to answer for, never mind the date format ! 8)MD Link to comment Share on other sites More sharing options...
MartinB Posted December 19, 2006 Share Posted December 19, 2006 Looking good. Star shape good. focus spot on. What sort of processing did you do on it e.g histogram stretching? One thing puzzles me though, you will have put a lot of time and effort into aligning the mount, framing and focussing the target so why just one frame? Link to comment Share on other sites More sharing options...
dejavu Posted December 19, 2006 Author Share Posted December 19, 2006 Looking good. Star shape good. focus spot on. What sort of processing did you do on it e.g histogram stretching? One thing puzzles me though, you will have put a lot of time and effort into aligning the mount, framing and focussing the target so why just one frame?Hi Martin, To be honest I dont have a clue how to stack images properly, I have tried astrostack but it crashed when I loaded Tiffs and I dont think it would take my canon RAW files either. I have the demo version of registax just now but looks a bit more complicated than astrostack so I have not bothered with it yet.I processed this image (RAW) in canon digital photoprofessional , adjusted curves and changed the auto white balance to white fluorescent light then converted to tiff and transfered to photoshop then adjusted levels..Also, I dont know if it was my polar alignment that was off last night or the tripod was not level (forgot my spirit level) but my images were a hit and a miss, some images would get star trails or egg shaped after 10 seconds then others like this one would be fine for over a minute. Link to comment Share on other sites More sharing options...
Andrew* Posted December 19, 2006 Share Posted December 19, 2006 Also, I dont know if it was my polar alignment that was off last night or the tripod was not level (forgot my spirit level) but my images were a hit and a miss, some images would get star trails or egg shaped after 10 seconds then others like this one would be fine for over a minute.Well the tracking on this is literally spot on! it's just brilliant nice round stars as well .As such, Rog, you're right. All of them are absolutely pin-point - hang on! All of them? Not quite, that star in the very top centre is a small line. What's going on there? Is the tracking selective? Is it a double star?Andrew Link to comment Share on other sites More sharing options...
Andrew* Posted December 19, 2006 Share Posted December 19, 2006 Is the tracking selective?Andrewthat WAS a joke! Not much of one, but don't suppose I'm really that blond.Andrew Link to comment Share on other sites More sharing options...
MartinB Posted December 19, 2006 Share Posted December 19, 2006 I would be very interested in having a play with your raw files. I could stack and process just to see if you have a bit more data in there. Suspect you have. Any chance of emailing them over? Link to comment Share on other sites More sharing options...
Caz Posted December 19, 2006 Share Posted December 19, 2006 A very nice capture indeed... 8)I would be very interested in having a play with your raw files. :shock: I hope you don't say that to all your patients... Caz Link to comment Share on other sites More sharing options...
MartinB Posted December 19, 2006 Share Posted December 19, 2006 Not me! Mind you I did recently have someone come to see me saying they wanted to kill themselves. Asked them what I could do to help, then wished I hadn't. :? Link to comment Share on other sites More sharing options...
dejavu Posted December 20, 2006 Author Share Posted December 20, 2006 Hi Martin, just had a look at my digital negatives and found 3 out of 6 files for that session (M42-ED80) that you can play around with, strange, the other 3 files that are not usable ( star trails, pear shape) are the ones taken with the shortest exposure.1st one is 20sec exposure ISO 800 , 2nd is 47sec exposure ISO800 and the 3rd of course is 61sec, ISO 1600.they are all around 9mb in size if you want me to send them to you, btw do you have a RAW file viewer/editor for the 400d? Link to comment Share on other sites More sharing options...
MartinB Posted December 20, 2006 Share Posted December 20, 2006 Not something I've done before but think ImagesPlus handles these files. Link to comment Share on other sites More sharing options...
FLO Posted December 20, 2006 Share Posted December 20, 2006 Had a quick play!I prefer yours (smoother) but I had fun nonetheless Link to comment Share on other sites More sharing options...
Kaptain Klevtsov Posted December 20, 2006 Share Posted December 20, 2006 Fab image for a single shot. Possibly the short exposures show wobble from the mirror slap? It could be that it's effect is less noticeable with the longer exposure?Captain Chaos Link to comment Share on other sites More sharing options...
dejavu Posted December 20, 2006 Author Share Posted December 20, 2006 Fab image for a single shot. Possibly the short exposures show wobble from the mirror slap? It could be that it's effect is less noticeable with the longer exposure?Captain ChaosThanks CC . Yes could be, I'll have to remember to use the mirror lockup feature on the 400d next time I'm out.Not something I've done before but think ImagesPlus handles these files.Okie dokie I'll e-mail you them later (not on my own computer just now). Link to comment Share on other sites More sharing options...
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