See this thread for a shot of the Tarantula that I took with Houghy's modified 300D a couple of weeks back... http://www.iceinspace.com.au/forum/s...ead.php?t=7308
You can see how more sensitive it is to Red, but something in me still likes the asthetics of the un-mod'ed images! In particular this one...
Cheers
See this thread for a shot of the Tarantula that I took with Houghy's modified 300D a couple of weeks back... http://www.iceinspace.com.au/forum/s...ead.php?t=7308
You can see how more sensitive it is to Red, but something in me still likes the asthetics of the un-mod'ed images! In particular this one...
Cheers
Geeday Robby,
Oh yes I see what you mean. The image with the modified camera shows the Tarantula to be a red and red only! (apart from some blue). While the unmodifed camera shows hues of green AND red. Your right I think I like my image better too!
So why does the modified camera only seem to see red ? where are the green hues ?
Red is the dominant colour in most Nebula, so it pretty much overpowers most other colours. The advantage being more detail, for less exposure time. You can boost the other channels in Pshop if you so desire, but in this case I left the colour balance as imaged.
I have boosted a little of the Green & Blue in my Tarantula shot. Perhaps this is more to your liking!
Ahh the ethics of astrophotography! Should we try and show accurately what is there is just make pretty picture!.. Me like pretty pictures
Cheers
That's quite a nice image of the 2070. Your image has different colours to what I have seen in the past, most being very red/pink vs your very blue wihch is interesting. I expect simply because of processing and the particular DSLR/telescope combination?
I really like the softness of the colours - not over processed and not too "contrasty".
It's interesting you use ISO 200 for it on the DSLR - as I am soon to be an owner of a 350D can you tell me - with a DSLR is there a difference in image quality between 1600 ASA and 200 ASA? Does the 200ASA speed produce a smoother (less noise) image?
That's quite a nice image of the 2070. Your image has different colours to what I have seen in the past, most being very red/pink vs your very blue wihch is interesting. I expect simply because of processing and the particular DSLR/telescope combination?
I really like the softness of the colours - not over processed and not too "contrasty".
It's interesting you use ISO 200 for it on the DSLR - as I am soon to be an owner of a 350D can you tell me - with a DSLR is there a difference in image quality between 1600 ASA and 200 ASA? Does the 200ASA speed produce a smoother (less noise) image?
Roger.
Hi Roger,
gee I forgot to mention that I used a mask technique with this image so that the core of the nebula was not over exposed.
Yes that's right, the ISO200 produces a smoother and less noisy image, but of course at a reduced sensitivity.
With my 12-inch equatorial telescope I can afford lower sensitity in return for smoother images.
For matter of interest the image isn't dark subtracted either! but yes I did use the freeware version of Noiseware on the image to reduce noise. I process all my images with Photoshop = manual stacking/averaging/image alignment/etc).
yes I did use the freeware version of Noiseware on the image to reduce noise.
That's what I was getting at Paul... I thought it looked like Noiseware softness. I have yet to have much success with Noiseware, as it always seems to soften the lines too much... But you seem to have found a reasonably nice balance here.
Hi Roger,
There are many thoughts re. ISO settings, but it does seem the best signal to noise ratio is achieved at ISO200... I am still stuck in ISO800 dark ages as I now have such a comprehensive Dark & Flat field library it seems like such hard work to move lower, & have to redo all these!
Cheers
Thats a very nice Tarantula, the different colours grading from pink to blue look great Paul. I will have to see about re imaging that at lower ISO too, seems that lower ISO allows the greater dynamic range, coupled with masking to get the outer detail while not washing out the bright bits. (and 12 inches of aperature dont go astray either )
Hi All,
An interesting discussion as regards the colour of ngc2070, I downloaded an offical Pix. taken on Film (should be about right colours) and am attaching it, with my picture taken with the modded Canon (no filters) and and ED80, my guiding was very poor that night, had a problem at this low Dec. (fixed next night, got 47 Tuc. again but the weather dident let me redo ngc2070) but will give some idea of what you get with a modded Canon, no colour correction was made, but it could be adjusted to suit the processor.
