Okay, I've put a non-cropped stacked version here: http://astrob.in/172984/0/
I can't seem to get the colours right. I need to spend a bit more time on that, but it should show the quality of the capture I hope. I stacked from the raw images in DSS with median.
Marty. You may find colour calibration difficult without dark reduction.
Marty. You may find colour calibration difficult without dark reduction.
The way I get my Color correct is to look at the background color. The sky's background should be dark gray. The color balance is adjusted until their is no color in the background sky.
The way I get my Color correct is to look at the background color. The sky's background should be dark gray. The color balance is adjusted until their is no color in the background sky.
Charles
I mean lifting the data out of the noise other than getting it to look right.
I mean lifting the data out of the noise other than getting it to look right.
When I was using my 100d and modded 1100d I used the very powerful stretch tool in Nebulosity to bring out the detail. Then I used curves after that to fine-tune it.
If your camera is not modded you will be missing most of the Ha light.
Here are two examples of what I did with the 1100D. These were both Very early on doing Astrophotography.
Notice the short exposure times with the modded camera. Also I would have been using a CLS clip filter to reduce the skyglow.
First is with the 300mm Zoom lens. 10 x 30 Sec Subs
Second is with a meade SC8 prime focus 15 x 1 Min subs.
Does anyone have any views on the relatively usefulness of the various specialist processing packages? Pixinsight seems to be the most comprehensive, but also the most expensive. The others seem cheaper (Nebulosity, Startools etc.), but I don't want to buy these and then end up purchasing Pixinsight anyway.
Does anyone have any views on the relatively usefulness of the various specialist processing packages? Pixinsight seems to be the most comprehensive, but also the most expensive. The others seem cheaper (Nebulosity, Startools etc.), but I don't want to buy these and then end up purchasing Pixinsight anyway.
Hi Marty,
how have you been processing yours so far?
I was planning on editing your full frame shot when I get a chance but
that won't be till sat/sun. there is plenty of data in there that can be teased out further.
I pretty much use photoshop only. It is a good way to learn, PixInsight gets good wraps but apparently is fairly complicated. I plan on buying it down the track.
I use Photoshop simply because there is so much info, add-on tools, etc available. You can get Photoshop CS2 for free as it is no longer maintained but it has limitations.
Does anyone have any views on the relatively usefulness of the various specialist processing packages? Pixinsight seems to be the most comprehensive, but also the most expensive. The others seem cheaper (Nebulosity, Startools etc.), but I don't want to buy these and then end up purchasing Pixinsight anyway.
I am using a very old version of PSP8.
I have looked at Pixinsight but it is very expensive.
I did pay for Nebulosity just for the Canon camera control. The Image processing in it was a bonus.
I've been using very basic features in an old version of photoshop. But pixinsight sounds like it has a lot of potential. As to camera control, there seem to be free options and so far I've just used Magic Lantern installed on my camera. I also tried the feature in the mount hand controller, which worked okay, but I've ditched the controller now. Wonder if anyone has managed to control that via the EQMOD cable?
Anyway, the MPCC and IDAS LPS filter have arrived. Hence I'm the reason for this thick cloud cover.
hi marty,
hope you dont mind but i did a quick play around with your image.
obviously it was just with the jpg, but you have a lot more data in the image you can pull out. your current processing is a bit heavy in the green but the red blue and green could all do with some boosting in curves.
hi marty,
hope you dont mind but i did a quick play around with your image.
obviously it was just with the jpg, but you have a lot more data in the image you can pull out. your current processing is a bit heavy in the green but the red blue and green could all do with some boosting in curves.
russ
Don't mind at all. It looks much better. I'll have to sit down and play a bit with it myself.
So you you apply separate curves to each of the colour channels separately? I've been trying to balance the colours at the start and then play with curves for all combined (i.e. RGB).
Crossing my fingers, but I might be able to get some fresh data tonight if the clouds stay away. With the new coma corrector and light pollution filter Would be nice to go to the ASV dark sky site, but I'm not sure how you drive out of that place at night without causing problems for those stay overnight.
Don't mind at all. It looks much better. I'll have to sit down and play a bit with it myself.
So you you apply separate curves to each of the colour channels separately? I've been trying to balance the colours at the start and then play with curves for all combined (i.e. RGB).
Crossing my fingers, but I might be able to get some fresh data tonight if the clouds stay away. With the new coma corrector and light pollution filter Would be nice to go to the ASV dark sky site, but I'm not sure how you drive out of that place at night without causing problems for those stay overnight.
no worries, you can apply separate curves/levels to each channel, you go to the drop down box that says rgb and choose which channel. if you want to stretch all colours at once, first do 'auto colour' in photoshop but using each channel individually allows you to squeeze more out of the pic in my view. you should be able to dig more out. good luck tonight!
Okay I managed to polar align and take some shots between the showers coming through. Would have liked more time, but oh well. This time 5 x 3 min exposures and I did a bunch of darks. Minimal processing so far: http://astrob.in/173909/0/
Below is a crop. I'm actually surprised how much better it is with only 15 min of data. Light pollution filter and coma corrector really worked. Though there is still some coma
Okay I managed to polar align and take some shots between the showers coming through. Would have liked more time, but oh well. This time 5 x 3 min exposures and I did a bunch of darks. Minimal processing so far: http://astrob.in/173909/0/
Below is a crop. I'm actually surprised how much better it is with only 15 min of data. Light pollution filter and coma corrector really worked. Though there is still some coma
Hi marty,
colour balance looks better its still very dark you have a lot of information hidden in there, here's a quick tutorial on using curves and levels I think explains it simply and well. http://myastroimages.com/Astro_Imagi...toShop_Curves/
Would be nice to go to the ASV dark sky site, but I'm not sure how you drive out of that place at night without causing problems for those stay overnight.
its still very dark you have a lot of information hidden in there, here's a quick tutorial on using curves and levels I think explains it simply and well.
