+Graham Posted April 20, 2015 Share Posted April 20, 2015 Being its a week night only a quick stint tonight. This is NGC 3953 and a couple of friends. GT 81 Canon 350 D 21 X 300 second subs at ISO 800 dithered in BYE and PHD 5 Darks 21 Flats Stacked in DSS Quick lick in PS 6 Johnnyaardvark 1 Link to comment Share on other sites More sharing options...
+RonC Posted April 21, 2015 Share Posted April 21, 2015 Nice capture Graham but what do you mean by 'dithered in BYEos'? Link to comment Share on other sites More sharing options...
Stephen Posted April 21, 2015 Share Posted April 21, 2015 Nice image Graham Stephen Link to comment Share on other sites More sharing options...
+Graham Posted April 21, 2015 Author Share Posted April 21, 2015 (edited) Nice capture Graham but what do you mean by 'dithered in BYEos'? Ron Dithering moves the scope by a few pixels between subs. This stops the build up of that 'Tartan' effect you get with a dslr on the back ground. I hope some one can explain this better than me but here goes. This effect is caused by the matrix on the chip which gives you your colour. When you shoot sub on top of sub the colour squares of the matrix puts the same colour on top of each other. ie green on top of green red on top of red ect ect. When you Dither you move the image slightly so the matrix then puts a green on top of a red, a red on top of a blue ect ect and the result is they cancel each other out. Terrible explanation I know but it does make one heck of a difference. Edited April 21, 2015 by Graham Link to comment Share on other sites More sharing options...
+RonC Posted April 21, 2015 Share Posted April 21, 2015 Hi Graham, Just checked BYEos settings and the default setting is on. Do I need to adjust these settings or are they fine on default?? Link to comment Share on other sites More sharing options...
+Graham Posted April 21, 2015 Author Share Posted April 21, 2015 (edited) Hi Graham, Just checked BYEos settings and the default setting is on. Do I need to adjust these settings or are they fine on default?? Hi Ron I upped my settings to increase the amount PHD moves the scope but then my old 350 is a lot less modern than yours. Give it a try as is and if there is little improvement increase the movement. Have you set up PHD to dither ?? Edited April 21, 2015 by Graham Link to comment Share on other sites More sharing options...
+RonC Posted April 21, 2015 Share Posted April 21, 2015 I will check and see, set at 1 and I have moved it to 10 to see the difference (when I am next out!) Link to comment Share on other sites More sharing options...
Johnnyaardvark Posted April 21, 2015 Share Posted April 21, 2015 Hi Graham (and Ron) Do you not have to use a specific setting when stacking so that the "colour noise" cancels out? thanks Steve Link to comment Share on other sites More sharing options...
+Graham Posted April 22, 2015 Author Share Posted April 22, 2015 Hi Graham (and Ron) Do you not have to use a specific setting when stacking so that the "colour noise" cancels out? thanks Steve Hi Steve No just stack as Normal in DSS. The colour noise is created in the camera, this noise is cancelled out by the dithering at source so to speak. Link to comment Share on other sites More sharing options...
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