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A bit of IR photography

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A bit of IR photography was created by Nerro

Got myself Hoya R72 filter for my camera and since today was just perfect conditions for such photography couldn't resist to take a trip to Wicklow mountains.Here are few shots which looks a bit scary when i finished processing :)





Both were processed in NX2.hope you's like it as much as i do :)
Last edit: 10 years 9 months ago by Nerro.
10 years 9 months ago #92504

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Replied by astroado on topic Re: A bit of IR photography

Those are great, very "other world" feel about them. :)
10 years 9 months ago #92506

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Replied by dave_lillis on topic Re: A bit of IR photography

Very unusual pics there.
can you use this filter for astrophotography ?
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor
Last edit: 10 years 9 months ago by dave_lillis.
10 years 9 months ago #92516

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Replied by Nerro on topic Re: A bit of IR photography

Thanks,
As for astrophotography i don't know.I saw a few pictures taken at night and they looked brilliant!But one would have to modify his camera by removing IR filter which is integrated,thus making the camera useful only for IR photography.Plus if you ask me they were heavily "photoshoped".
those two pictures where taken @ f/6 30s and 40s exposures at bright daylight...So i don't think i would be able to do any IR photography with my present set up at night.
10 years 9 months ago #92521

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Replied by dave_lillis on topic Re: A bit of IR photography

ok, but if you had a camera that could do IR, is it a way of getting around light pollution, or is IR light pollution just as bad?, its worth exploring.
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor
Last edit: 10 years 9 months ago by dave_lillis.
10 years 9 months ago #92529

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Replied by lunartic_old on topic Re: A bit of IR photography

I have seen cameras for sale on other astronomy forums that have been modified for IR photography, the camera picks up objects such as the Veil and Califonia Nebulae, objects that are normally blocked by the cameras IR filter, with ease.

I guess it might be worth picking up an old 300D or 350D and paying to have it modified if you fancy having a go.

Paul
Programming today is a race between software engineers striving to build bigger and better programs, and the universe trying to produce bigger and better idiots. So far, the universe is winning.

Rich Cook
10 years 9 months ago #92532

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Replied by Nerro on topic Re: A bit of IR photography

Yes the first thing to go when you are modifying the camera is the IR blocking filter making the camera useless for normal photography.i know there are cameras made with clip in IR blocking filters but as far as I know they old film ones,haven't heard anyone making DSLR one.
What's for astro photography Dave gave me some food for my thoughts.in theory IR filter is intended to block the visible light.so it should block most of the light pollution???maybe someone tried this???going to play around in Google and see what I will come up.But I presume there is a catch somewhere as it would be the best friend who lives in the city and at the moment I haven't heard anything about it...
10 years 9 months ago #92535

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Replied by mjc on topic Re: A bit of IR photography

Question re: IR astro imaging.

Weather satellites use various IR bands from about 730nm up to about 1,200nm and image water vapour / clouds even at night. Water absorbs IR (then presumably re-emits as a black body). So I suspect that ground-based IR astro imaging would be difficult.

IR coming in would get absorbed and signal sources weakened and this compounded by greater sky noise in IR due to water vapour re-emitting.

Note: cloud detectors work on IR from the water vapour in the atmosphere.

www.noao.edu/staff/gillespie/projects/cloud-detector.html

In case that link is banjaxed:
www.noao.edu/staff/gillespie/projects/cloud-detector.html
(looks like one can just paste in a URL - I thought you had to use the link icon - nice.)

I can't pretend to be an authority so please feel free to research further.

Mark C.
Last edit: 10 years 9 months ago by mjc. Reason: Commented direct URL pasting
10 years 9 months ago #92538

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Replied by dave_lillis on topic Re: A bit of IR photography

thats what I was also wondering about, how far does cameras sensitivity extend into the IR range ?!??, is it anyway usuable on the likes of nebulae likes the N. American nebula for instance.
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor
10 years 9 months ago #92550

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Replied by lunartic_old on topic Re: A bit of IR photography

The Spitzer telescope has taken some stunning images of the North America nebula in IR.

[url=http://apod.nasa.gov/apod/ap110215.html][/url]

Obvioulsy a modified DSLR would not have the same resolution as Spitzer, but with the correct scope and exposure I would imagine that an excellent image could be achieved.

Paul
Programming today is a race between software engineers striving to build bigger and better programs, and the universe trying to produce bigger and better idiots. So far, the universe is winning.

Rich Cook
Last edit: 10 years 9 months ago by lunartic_old.
10 years 9 months ago #92552

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Replied by Calibos on topic Re: A bit of IR photography

The Spitzer telescope has taken some stunning images of the North America nebula in IR.

[url=http://apod.nasa.gov/apod/ap110215.html][/url]

Obvioulsy a modified DSLR would not have the same resolution as Spitzer, but with the correct scope and exposure I would imagine that an excellent image could be achieved.

Paul


If you supply the scope and the camera, I'll bring it with me to the ISS after I win the 100 million in the Euro Millions.
Keith D.

16" Meade Lightbridge Truss Dobsonian with Servocat Tracking/GOTO
Ethos 3.7sx,6,8,10,13,17,21mm
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10 years 9 months ago #92553

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Replied by lunartic_old on topic Re: A bit of IR photography

I'll bring it with me to the ISS after I win the 100 million in the Euro Millions.


The way property prices are going you should be able to pick it up next year for a mere 20 million. :p
Programming today is a race between software engineers striving to build bigger and better programs, and the universe trying to produce bigger and better idiots. So far, the universe is winning.

Rich Cook
10 years 9 months ago #92555

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