Tony. Give yourself credit where credit is due mate. First DSO stacking attempt without any photoshop adjustment.....Damn fine job.
Get yourself a cable or remote release Tony, you will be over the moon if that's the type of exposure you get with 30 sec. Stacking it really doesn't make it much brighter (without image enhancement in PS or such), it just increases the signal to noise ration. For brighter images before adjustment you need longer exposure time. And for that you need to use the bulb exposure.
It might be h0ughy, but I don't think it is. If you check out Tony's shot here http://www.iceinspace.com.au/forum/a...achmentid=3764 there is no similar spot. It may be different in the 20Da but with my 300 the hot pixels are pretty predictable where they will appear and over what time more will appear. If he's sticking to 30 sec exposures then its unlikely its a hot pixel as there isn't one in his single 30 sec shot at the above link. That's assuming of course that his image scale is the same between the two and he hasn't cropped some of the surroungs.
NO I had a look at the full size version and there was NO red hot pixel's in the other images....but dont ask me what it is other wise I ll reply its a red star...lol..
NO I had a look at the full size version and there was NO red hot pixel's in the other images....but dont ask me what it is other wise I ll reply its a red star...lol..
Sounds good to me. Are you happy with your purchase Tony?
Stoked houghy....honestly I can not visualy see much in my light poluted city house....to put it this way...if it wasn't for CCD and DSLR's I dont think this hobby would be for me....
Phil...NO...I was going to turn it on once I start doing longer exposures.
Nice looking lagoon. I so jealous of your weather. Grrrrrrrr
I think there is an even better image lurking in the RAW data. The contrast is pretty high (as evident by the very black background) and stretching your JPG in Photoshop shows more detail in the faint areas. I reckon you can push the stretching using curves on your raw stacked image to bring out even more detail
If what I said is gobbledygook, then email me a copy of the RAW stacked image and I would be happy to have a crack at it for you and then explain the steps.
Chris I have not used the raw format...everything so far is taken in Jpeg....I can send you the stacked jpep-BMP file buts thats still 24MB....I have compressed into a 6MB rar file.
I have PhotoShop but have never used it so any help is much appreciated.
Anyone is welcome to have a go....download the Lagoon full.rar file from here.
am downloading now to test photoshot etc. i have no shots like this one to practise on. do not worry, i will look after it and return it when finished.
Hi Tony,
Here's my effort after about 5mins with Photoshop. There is a heck of a lot of detail in that shot of yours!! Well done. I'm no expert with PS, but someone who is could probably squeeze a bit more out of it still.
Ok What did I do...
1. Crop the image a bit to frame it better and remove stacking overlaps
2. Boost the upper end of the curves, to make it look way too over exposed.
3. Using levels reset the black point, using the graphs for each RGB channel individually. This means moving the left slider right until it touches histogram.
4. Tweak the right slider in Levels to get the highlight the detail and balance. The image may still look a bit too over-exposed.
5. Back to curves for a slight tweak. You can get the curve graph looking a bit like a "S" shape at 45°. This boosts the highlights & darkens the background. Image should be looking pretty good now.
6. A little colour balance using colour balance. Boost the midtones a little and boost the shadows a little.
7. I usually finish off with a basic contrast and brightness adjustment and an unshape mask sharpen filter. But this one didn't need it.
Hope this makes sense! There are many other processing techniques but this is the method I use and it mormally does an ok job for most stuff.
Let me know if you want the full BMP of the this processed image, & I'll pop it on the website.
Ha, took you 5 minustes for that Robby. Ha, 4.25 min Or did that include writing up you processing explaination.
Robby's right about there being heaps of info in there Tony. If someone (not me) who really new what they were doing with Maxim or iris or even PS or one of the other dedicated progs had a go at a Raw of it for half an hour to an hour or so, the results would be stunning I think. Look out Eddie. Tonys on your tail
Last edited by [1ponders]; 20-08-2005 at 10:35 AM.
Nice one Paul, but where's the explanation of how you did it Wasn't that part of the deal?
Do I need to talk to you about controlling the ArgoNavis with your star-mate remote? Would you be keen on that idea?
Cheers
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Tony. Give yourself credit where credit is due mate. First DSO stacking attempt without any photoshop adjustment.....Damn fine job.
Or did that include writing up you processing explaination. 
