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dslr cameras

todd8137

By todd8137
in Discussions - Cameras

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Psychobilly

Psychobilly

Posted
Posted

How easy is it to mod a Nikon?

Is the detailed info on how to mod them freely available?

Are replacement "astro" the filters readily available for them?

Are there clip-in filtres available them?

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In Daylight I use my Nikons...

At night I use my DIY modded Canons...

Billy...

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dph1nm

dph1nm

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These comparisons where people show their favourite darks and claim camera x is better than camera y are about as useful as asking how long is a piece of string. (a) your need the noise measuring - you cannot judge that by just looking at the image, and (:) you need to know what signal they would record in the same time as different cameras have different gain levels.

NigelM

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Rover

Rover

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I spoke to someone today in Dixons (I know they aren't astrophotography specialists but the guy did seem to know what they were talking about.) They had all the details on the new 1100. It's going to be 12.1 megapixels and £100 more that the 1000P. It has some sort of wireless but other than that the guy in the shop didn't think there would offer anything new that the 1000d offered already for astrophotography. If you want an extra 2 megapixels and wireless for an extra £100 then that's all you get apparently.

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pook

pook

Posted
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How easy is it to mod a Nikon?

Is the detailed info on how to mod them freely available?

Are replacement "astro" the filters readily available for them?

Are there clip-in filtres available them?

I've yet to look into it, but when it's out of warranty I know I'll be taking a screwdriver to it to find out! I've already established in daylight use that the high ISO noise levels exceeds anything else I've used so far, and it looks like it's long exposure capabilities make it worth further investigation.

you cannot judge that by just looking at the image, and (:) you need to know what signal they would record in the same time as different cameras have different gain levels.

NigelM

Hmmm.. Can I not? If I take a 5 minute exposure on one camera, and then take a second on another in identical conditions, and camera A results in less visible noise than camera B, then I'm sorry... I'd prefer to use camera B. If you can visually see more noise on one camera than another, then doesn't that make any further measurement academic?

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pook

pook

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Good luck :)

I have found the perfect answer to the warranty dilema...

Buy "reconditioned" cameras with 3/6 month warranty... plenty of time to check it out and not too long to wait before "openign them up"...

Billy...

You know what? I kind of wish I had now :p I have a suspicion this D7000 has the makings of a killer DSLR for astro. It's the issue of can you get filters for it, but if I'm gonna rip it apart, I'll probably relegate it to astro work only, so I'll just use it with no filter at all, and use filters in the adaptors or barlows. I'm sure you'll be able to get clip in filters for Nikon F mount. I'm certainly going to find out anyway.

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brianb

brianb

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Most of the "bells an whistles" make no difference at all for astro...

Yes they do, the more "bells & whistles" there are the harder the thing is to use.

Noise - those frames are meaningless, Nikon tends to apply in-camera processing even to raw frames which reduce apparent noise but tend to remove real stars from images. And much of what is being shown in those frames appears to be hot pixels, not thermal or readout noise. Hot pixels are easily processed out ... just be more careful about how you do it than the Nikon software is. Thermal noise doubles with every 7C rise in operating temperature so comparisons without temperature control are meaningless.

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Tac

Tac

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I spoke to someone today in Dixons (I know they aren't astrophotography specialists but the guy did seem to know what they were talking about.) They had all the details on the new 1100. It's going to be 12.1 megapixels and £100 more that the 1000P. It has some sort of wireless but other than that the guy in the shop didn't think there would offer anything new that the 1000d offered already for astrophotography. If you want an extra 2 megapixels and wireless for an extra £100 then that's all you get apparently.

It also has the newer DIGIC 4 processor. Whether that makes much if any difference though I don't know.

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dph1nm

dph1nm

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Hmmm.. Can I not? If I take a 5 minute exposure on one camera, and then take a second on another in identical conditions, and camera A results in less visible noise than camera B, then I'm sorry... I'd prefer to use camera B. If you can visually see more noise on one camera than another, then doesn't that make any further measurement academic?
It is actually surprisingly difficult to do, even for on-sky shots, unless the difference in s/n is large. For darks it is meaningless unless you know the gain of the camera, as you need to know the noise in electrons, not in ADU, which is what you see in the picture. And then there is still the whole thorny issue of how you convert RAW into something you can view on a screen! I did read somewhere that some manufacturers subtract a constant to make the background look darker and fool you into thinking the noise is less.

NigelM

NigelM

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Tac

Tac

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Well I've just won a 1000D Refurbished body on eBay for £187. Didn't think that was too bad really. Comes with strap, battery and charger. I will use this solely for Astro work (eventually modded) and will look for a 500D with lens kit now for daytime work :)

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