+Graham Posted September 1, 2014 Share Posted September 1, 2014 Got the rig sorted. So on Saturday I managed to get my first DSO image in months. M31 was just too good an opportunity to miss. Canon 350 D GT 81 75 subs at 30 seconds unguided. Staked in DSS Polished in PS 6. Link to comment Share on other sites More sharing options...
+RonC Posted September 1, 2014 Share Posted September 1, 2014 Is that a B&W image Graham? Nice detail and focus, well done. The darker nights are arriving !! Link to comment Share on other sites More sharing options...
+Graham Posted September 1, 2014 Author Share Posted September 1, 2014 Thanks Ron, It started life as a colour image but I got so used to the Atik being mono I preferred it in black and white as it shows off much more detail. So I left the saturation off in DSS after stacking. Link to comment Share on other sites More sharing options...
+Ibbo Posted September 2, 2014 Share Posted September 2, 2014 some nice lanes Graham Link to comment Share on other sites More sharing options...
red dwalf Posted September 2, 2014 Share Posted September 2, 2014 always a tricky target Graham, as Steve says, some nice dust lanes coming through Link to comment Share on other sites More sharing options...
Guest peepshow Posted September 2, 2014 Share Posted September 2, 2014 Well I'm gobsmacked. I was always given to understand that to get fine, deep detail as you have, Graham, one had to have long exposures. Your exposures, although many of them, were only 30 seconds long if I read your details correctly. Amazing.....I shall have to think again on this imaging lark. Link to comment Share on other sites More sharing options...
Sheila Posted September 2, 2014 Share Posted September 2, 2014 Well I'm gobsmacked. I was always given to understand that to get fine, deep detail as you have, Graham, one had to have long exposures. Your exposures, although many of them, were only 30 seconds long if I read your details correctly. Amazing.....I shall have to think again on this imaging lark. The more data the more detail is always being drummed into me Link to comment Share on other sites More sharing options...
Sheila Posted September 2, 2014 Share Posted September 2, 2014 Nice one Graham Link to comment Share on other sites More sharing options...
Guest peepshow Posted September 2, 2014 Share Posted September 2, 2014 The more data the more detail is always being drummed into me But what is more Data? Data is long exposures according to this man, who is an advanced imager on the, Progressive Astro Imaging Group. http://www.dens-astropics.org.uk/page%2035.htm Link to comment Share on other sites More sharing options...
+Graham Posted September 2, 2014 Author Share Posted September 2, 2014 Thanks you folks. I always assumed more data means more recorded photons. Be that in one ten minet sub or twenty thirty second subs. Link to comment Share on other sites More sharing options...
Guest peepshow Posted September 2, 2014 Share Posted September 2, 2014 To quote from the above link I have just referred to.......... "To get photons from the dimmest bit of a nebula to register on the chip you must give them time to arrive. Given the random arrival times many of the short exposures could actually record nothing at all." ..............This is why I was surprised to see so much detail in your very short exposures of 30 seconds, albeit many of them. So back to the drawing board for me. Been back there many times now since I recently started imaging. Link to comment Share on other sites More sharing options...
philjay Posted September 2, 2014 Share Posted September 2, 2014 Nice that Graham. Good procesing as well, I particularly like m110, thats come out nicely Link to comment Share on other sites More sharing options...
+Ibbo Posted September 2, 2014 Share Posted September 2, 2014 if its faint you need the the longer subs but M31 is bright as DSO's go more subs smoooooth it out Link to comment Share on other sites More sharing options...
red dwalf Posted September 2, 2014 Share Posted September 2, 2014 your histogram will show you if you need to do longer sub lengths, if it`s tight over to the left then you need longer Link to comment Share on other sites More sharing options...
xanthic Posted September 2, 2014 Share Posted September 2, 2014 Nicely done Link to comment Share on other sites More sharing options...
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