My Fuji camera with Super CCD may be better for this task:-
http://www.dpreview.com/news/0301/03012202fujisupe rccdsr.asp
I have found that my Fuji S5 seems to be surprisingly sensitive to UV. I am going to give Fuji a call tomorrow and see if the camera can see into the infraRed range too.
There is a special version of the Fuji S5, designed for forensic use, FinePix IS Pro See here:- http://www.dpreview.com/news/0707/07071304fujifilm ispro.asp
which would be hand for some kinds of astro and nature photography.
I will give Nikon a call too to see if I can do something similar with my D200.
Stephen Walters
G7VFY
07956-544202
I have three cameras, a Nikon D200, a Fuji S5 (with super CCD) and a Nikon film body F801. All three cameras have the same lens mount, which is very handy.
From time to time on a clear night, I setup a camera on a tripod in my Garden and leave the shutter open for anything from 20 secs to a min with a 50mm F1.8 standard lens with the camera pointed at the sky.
However, the weak starlight seems to swamped out by the strong, mostly, sodium street lighting. Before digitals were generally available, the only way to filter out this (mostly yellow) street light was to do multiple exposures using a selection of blue filters (80A, b or c) but this would attenuated the very weak starlight to the stage of being virtally useless.
In an ideal situation I would find some deserted location where there is minimal light pollution.....but I don't have a car and little spare time these days.
So, here is the big question....
Is there a clever bit of Free/cheap astronomical software that can do all the post image processing to filter out all the unwanted wavelengths of light.
I do not want to spend hours fiddling around with photoshop (I only have 5.5 and I can't justify £400-500 for the latest version anyway.
What I envisage is a piece of DSP/image processing software that will produce a bar-chart of the wavelengths seen by the sensor (I would probably have to shoot in RAW mode on the digital cameras) and then give me an option to take out/delete the unwanted wavelengths.
In ham radio they use digital signal processors with clever software to get voice/Morse code/Packet data out of the most terrible radio interference. Why can't this be done with light.
Slashdot Mirror
Well then. Try not to be average? This is Darwin atat work. Survival of the. finest, not the fattest.
The British transported prisoners to Australia and look how that worked out. Assuming we ignore Mel Gibson for a bit.
My Fuji camera with Super CCD may be better for this task:- http://www.dpreview.com/news/0301/03012202fujisupe rccdsr.asp
I have found that my Fuji S5 seems to be surprisingly sensitive to UV. I am going to give Fuji a call tomorrow and see if the camera can see into the infraRed range too.
There is a special version of the Fuji S5, designed for forensic use, FinePix IS Pro See here:- http://www.dpreview.com/news/0707/07071304fujifilm ispro.asp
which would be hand for some kinds of astro and nature photography.
I will give Nikon a call too to see if I can do something similar with my D200.
Stephen Walters
G7VFY
07956-544202
Hi there,
This is my first posting here so be gentle.
I do a little astro photography.
I have three cameras, a Nikon D200, a Fuji S5 (with super CCD) and a Nikon film body F801. All three cameras have the same lens mount, which is very handy.
From time to time on a clear night, I setup a camera on a tripod in my Garden and leave the shutter open for anything from 20 secs to a min with a 50mm F1.8 standard lens with the camera pointed at the sky.
However, the weak starlight seems to swamped out by the strong, mostly, sodium street lighting. Before digitals were generally available, the only way to filter out this (mostly yellow) street light was to do multiple exposures using a selection of blue filters (80A, b or c) but this would attenuated the very weak starlight to the stage of being virtally useless.
In an ideal situation I would find some deserted location where there is minimal light pollution.....but I don't have a car and little spare time these days.
So, here is the big question....
Is there a clever bit of Free/cheap astronomical software that can do all the post image processing to filter out all the unwanted wavelengths of light.
I do not want to spend hours fiddling around with photoshop (I only have 5.5 and I can't justify £400-500 for the latest version anyway.
What I envisage is a piece of DSP/image processing software that will produce a bar-chart of the wavelengths seen by the sensor (I would probably have to shoot in RAW mode on the digital cameras) and then give me an option to take out/delete the unwanted wavelengths.
In ham radio they use digital signal processors with clever software to get voice/Morse code/Packet data out of the most terrible radio interference. Why can't this be done with light.
regards
Stephen Walters
G7VFY
07956-544202 my cell phone.