Quote:
Originally Posted by tornado33
What would really interest me is a MONOCHROME sensor equipped Canon camera, I.E. a bog standard EOS DSLR without the colour bayer filter and with no IR cut filter at all. In theory it should be no dearer than a normal camera but its wishful thinking such a camera would be made I think.
Seeing as how the EOS sensors work as well as they do at room temeprature, a monochrome 18 MP cooled EOS camera would blow every dedicated astro camera out of the water as far as dark current noise went.
Then I once used the GRAS (now Itelescope) online scopes, the raw light frames still had some dark current noise, which was easy to subtract as they also sent me a master dark from darks at the same temperature. However when I borrowed Houghys cooled DSLR the noise, or rather lack of it even on the raw light frames was mind boggling. The only thing that stops them from cornering the astro camera market is they are colour not monochrome chips.
Look at what cooling an EOS sensor does. That, in monochrome with accurate temperature control would be absolutely brilliant. You could do 1 hour subs with hardly any noise. Remember as a guide the Central DS 600d "only" cools to 28 deg below ambient yet returns stunningly dark darks that have to be heavily stretched to show noise.
Scott |
Will say the tests of this gens sensors are mind blowing, I think next gen even without cooling EOS cameras will give dedicated astro cameras one hell of a run while even un-cooled. Technology is catching up and it won't be long before it gets hard to justify the pricing of of astro cams. With hacked firmware like magic lantern
http://http://magiclantern.wikia.com/wiki/Magic_Lantern_Firmware_Wiki , DIY filter modding and cooling its really putting out of reach dedicated astro cams into all peoples hands and its great
I've just done a 1100D filter mod myself and can't wait to play with some cooling
Magic lantern is currently in development for 1100D support which will crack the iso limits right open on this baby
Hmm will be waiting to see if canon has any firmware changes on the 60Da myself, though i think this will be doubtful, it could open up some a ton of firmware in the AP world. BTW that link to pre-modded cooled cameras is great bud