twelly27 Posted September 28, 2013 Share Posted September 28, 2013 Hi all I'm right now sat at my scope trying to image m31, I can get 3 min exposures with no trails at ISO 800, but they are coming out a tad orange, I'm going to do an hours worth of 3 min pics, when I come to stack then will the level of orange on each pic add up to spoil my image beyond saving when it's going to be processed? Or will it be fine? Thanks Chris Link to comment Share on other sites More sharing options...
Bizibilder Posted September 28, 2013 Share Posted September 28, 2013 It will be fine! You can eliminate the orange in the processing. Link to comment Share on other sites More sharing options...
twelly27 Posted September 28, 2013 Author Share Posted September 28, 2013 Good thanks I can't really do processing but I know just enough to get rid of orange Link to comment Share on other sites More sharing options...
JKB Posted September 28, 2013 Share Posted September 28, 2013 Also might be worth taking some with shorter exposures like 1 and 2 mins as the core is quite bright and easy to become overexposed when stretched in processing.CheersJamie Link to comment Share on other sites More sharing options...
Bizibilder Posted September 28, 2013 Share Posted September 28, 2013 When you are ready just ask on here and folks will give you the advice you need. Let us know what software you are using as that makes it easier to help you. Link to comment Share on other sites More sharing options...
twelly27 Posted September 28, 2013 Author Share Posted September 28, 2013 ive just discovered i can get 5 min exposures without trails haha! going for that now very orange though Link to comment Share on other sites More sharing options...
PhotoGav Posted September 28, 2013 Share Posted September 28, 2013 Good luck with the imaging tonight.... It's just clouds down here in the south!Are you using any guiding on the HEQ5? Link to comment Share on other sites More sharing options...
ollypenrice Posted September 28, 2013 Share Posted September 28, 2013 Yes, you can sort the colour balance later. Get the data. You can try some short subs for the core but I think you'll find you have information well into the core even in the 5 minute subs.Olly Link to comment Share on other sites More sharing options...
twelly27 Posted September 28, 2013 Author Share Posted September 28, 2013 Good luck with the imaging tonight.... It's just clouds down here in the south!Are you using any guiding on the HEQ5?nope just polar aligned and away i go haha! im suffering from dew now though Link to comment Share on other sites More sharing options...
twelly27 Posted September 28, 2013 Author Share Posted September 28, 2013 Yes, you can sort the colour balance later. Get the data. You can try some short subs for the core but I think you'll find you have information well into the core even in the 5 minute subs.Ollyive never even done some shorter ones but tbh ive never really had a good go at it before, stacking doesnt go well enough Link to comment Share on other sites More sharing options...
Stargazer33 Posted September 28, 2013 Share Posted September 28, 2013 Cloud AND rain here! Would love to be out there getting very orange five minute subs. Link to comment Share on other sites More sharing options...
twelly27 Posted September 28, 2013 Author Share Posted September 28, 2013 Cloud AND rain here! Would love to be out there getting very orange five minute subs.last night tonight clear as a bell and the same for tomorrow, im not working monday so i might be tempted to go for orions nebula and jupiter, maybe mars Link to comment Share on other sites More sharing options...
leemanley Posted September 28, 2013 Share Posted September 28, 2013 i wish LP was my only problem tonight !!!damn clouds Link to comment Share on other sites More sharing options...
Bg7pep Posted September 29, 2013 Share Posted September 29, 2013 hello twelly27is that you capture the pic with DSLR ?the orange may be come with the wrong white balance .you can fix at photoshop after stack pics.but,you must to set RAW to take the pic !(pardon for my weak english) Link to comment Share on other sites More sharing options...
PhotoGav Posted September 29, 2013 Share Posted September 29, 2013 Neat (about the 5 min subs), that gives me hope... Once I master a really tight polar alignment with my heq5 I look forward to ramping up the exposure times. Now, we just need to move those darn clouds......... Hope you're going to post some pics from your session yesterday. Link to comment Share on other sites More sharing options...
twelly27 Posted September 29, 2013 Author Share Posted September 29, 2013 Hi allive actually manager my best effort yet to be honest. its stacked well, with the very smallest of star trails etc unlike my first efforts, my photoshop skills are beyond basic and ive hit a problem now, when i change my file from 32 to 16 bit so i can use the curves tool the core of the galaxy just goes very bright i havent a clue why or how to fix it. Im well happy i dont really know how to lessen the orange anymore i only know how to do it in levels but you can make out the dust arms. thanksChris Link to comment Share on other sites More sharing options...
Sandancer10 Posted September 29, 2013 Share Posted September 29, 2013 Hi when you first open your photo in Photoshop if you have shot in raw you can change the white balance or use the temperature slider to reduce the orange effect. If you have already worked on the photos use saturation slider in adjustments and that will also reduce the orange. The reason you are having a problem with levels is you are probably increasing the highlights toward the top end of the scale -thats to the right, try do the curve more gently. Cheers Brenda Link to comment Share on other sites More sharing options...
Matt Scunthorpe Posted September 30, 2013 Share Posted September 30, 2013 5mins unguided is impressive. I can just about handle 2minutes with minimum trials. But my 200p on a HEQ5 is practically a kite with a bit of wind.Matt. Link to comment Share on other sites More sharing options...
Bg7pep Posted September 30, 2013 Share Posted September 30, 2013 http://www.astropix.com/HTML/J_DIGIT/LAYMASK.HTMthe url comes from the other topic .it will help you to process the over exposure core Link to comment Share on other sites More sharing options...
Astrosurf Posted October 1, 2013 Share Posted October 1, 2013 I'm pretty poor at PSP, but what I do with bright cores sometimes is I do several iterations of Curves with the core isolated with a feathered selection, then select Inverse. I'm not at home so can't give you detailed instructions! I feather it quite a bit, set at 20 or 30, and do a wobbly-lined selection which changes at each iteration. I use Curves VERY slightly for each iteration. HTH. I've also used the above tutorial which is brilliant.Alexxx Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.