nofxrx
Vendor (HyperCams & Mods)
Reged: 07/12/05
Posts: 2498
Loc: Palm Bay,Florida
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Quote:
Thanks Brent and David,
Btw, How are the cooling mods coming for the canon Xs models?
Hey Sal,
They are gettin there...I have been working pretty hard this week on them. I plan on having a working prototype by the end of Nov.. 
Thanks for asking!
CS!
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Brent Oliver
WO-66SD*WO-Megrez102ED-Special Edition*Super C8 Plus*
CGE Pier-Mounted
Some Cameras,some Filters
HyperCams&MODS
My Gallery
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SGT500
Carpal Tunnel
Reged: 10/03/06
Posts: 2922
Loc: Ny
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Based on what Samir stated, with my setup the max focal ratio i shoudl use is f/22. so f/20 was a good match for my camera
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-Sal
AstroTech Ritchey Chretien 8"
Williams Optics Zenithstar 80
Orion Atlas Eq-G
Hap Griffin Modified Canon Eos Xs (1000D)
My Astrophotography Gallery
My Sketch Gallery
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Rankinstudio
sage
Reged: 04/05/08
Posts: 418
Loc: Salt Lake City, UT, Lake Powel...
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It must have been, the results were great 
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David Rankin
http://www.rankinstudio.com
Astro Gallery
Orion 254mm F4.7 (imaging scope)
Baader MPCC
Quickcam pro 9000 (guider, imager)
Canon Rebel XSi (self modified)
Atlas EQ-G (EQ MOD)
Canon 50mm F1.8 II Lens
Canon 28-200 F3.2 Lens
DSLR peltier cooler
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kabes
member
Reged: 09/22/09
Posts: 16
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Has anyone tried doing this with a Nikon? There is a similar app for the D3/D300/D700 that captures liveview video that I just found: http://ogiroux.wordpress.com/2009/02/26/your-d700-shoots-video-too/
I'm going to give it a try with my d300 as soon as the weather clears (so maybe next year or something?)...
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Meade ETX-LS 6" ACF
Celestron Skymaster 15x70
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SGT500
Carpal Tunnel
Reged: 10/03/06
Posts: 2922
Loc: Ny
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Quote:
It must have been, the results were great
thank you again 
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-Sal
AstroTech Ritchey Chretien 8"
Williams Optics Zenithstar 80
Orion Atlas Eq-G
Hap Griffin Modified Canon Eos Xs (1000D)
My Astrophotography Gallery
My Sketch Gallery
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SGT500
Carpal Tunnel
Reged: 10/03/06
Posts: 2922
Loc: Ny
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Quote:
Has anyone tried doing this with a Nikon? There is a similar app for the D3/D300/D700 that captures liveview video that I just found: http://ogiroux.wordpress.com/2009/02/26/your-d700-shoots-video-too/
I'm going to give it a try with my d300 as soon as the weather clears (so maybe next year or something?)...
I dont know of any but i would think that the process would be the same as recording video with a canon. Im sure it would work. 
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-Sal
AstroTech Ritchey Chretien 8"
Williams Optics Zenithstar 80
Orion Atlas Eq-G
Hap Griffin Modified Canon Eos Xs (1000D)
My Astrophotography Gallery
My Sketch Gallery
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ccs_hello
Post Laureate
Reged: 07/03/04
Posts: 3300
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Samir,
Just like to mention that in those quick modes (faster frame rate), i.e., in Liveview, camera video out, and even in movie mode, these is the subsampling* in DSLR body. Basically, there is insufficient time to read all pixels in the sensor.
So in the pixel size calculation, treat mid-point virtual boundary line in other unused/unread pixels as part of the "jumbo pixel". Naturally, such jumbo pixel is super inefficient, only the central region is used .
For now, ignore the following, non-fixed-sized font kills the character art illustration.
(Cut-n-paste into NOTEPAD program to see it.)
-------------------------
rgrg|rgrgrg|rgrgrg|rgrgrg
gbgb|gbgbgb|gbgbgb|gbgbgb
RGrg|rgRGrg|rgRGrg|rgRGrg
GBgb|gbGBgb|gbGBgb|gbGBgb
rgrg|rgrgrg|rgrgrg|rgrgrg
gbgb|gbgbgb|gbgbgb|gbgbgb
-------------------------
rgrg|rgrgrg|rgrgrg|rgrgrg
gbgb|gbgbgb|gbgbgb|gbgbgb
RGrg|rgRGrg|rgRGrg|rgRGrg
GBgb|gbGBgb|gbGBgb|gbGBgb
rgrg|rgrgrg|rgrgrg|rgrgrg
gbgb|gbgbgb|gbgbgb|gbgbgb
-------------------------
rgrg|rgrgrg|rgrgrg|rgrgrg
gbgb|gbgbgb|gbgbgb|gbgbgb
RGrg|rgRGrg|rgRGrg|rgRGrg
GBgb|gbGBgb|gbGBgb|gbGBgb
rgrg|rgrgrg|rgrgrg|rgrgrg
gbgb|gbgbgb|gbgbgb|gbgbgb
RG
GB are active pixels
rg
gb are unused pixels
(try again)
---------------------------
rgrgrg|rgrgrg|rgrgrg|rgrgrg
gbgbgb|gbgbgb|gbgbgb|gbgbgb
rgrgrg|rgrgrg|rgrgrg|rgrgrg
gbgbgb|gbgbgb|gbgbgb|gbgbgb
rgrgrg|rgrgrg|rgrgrg|rgrgrg
gbgbgb|gbgbgb|gbgbgb|gbgbgb
---------------------------
rgrgrg|rgrgrg|rgrgrg|rgrgrg
gbgbgb|gbgbgb|gbgbgb|gbgbgb
rgrgrg|rgrgrg|rgrgrg|rgrgrg
gbgbgb|gbgbgb|gbgbgb|gbgbgb
rgrgrg|rgrgrg|rgrgrg|rgrgrg
gbgbgb|gbgbgb|gbgbgb|gbgbgb
---------------------------
rgrgrg|rgrgrg|rgrgrg|rgrgrg
gbgbgb|gbgbgb|gbgbgb|gbgbgb
rgrgrg|rgrgrg|rgrgrg|rgrgrg
gbgbgb|gbgbgb|gbgbgb|gbgbgb
rgrgrg|rgrgrg|rgrgrg|rgrgrg
gbgbgb|gbgbgb|gbgbgb|gbgbgb
The above example shows for every 36 pixel (jumbo pixel) region, only 4 pixels in the center are active.
P.S. I only show simple case, some designs have limited one axis like-color off-sensor pixels summing.
Clear Skies!
ccs_hello
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ccs_hello
Post Laureate
Reged: 07/03/04
Posts: 3300
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Sal,
Glad to see data compression did not hurt image quality too much.
Clear Skies!
ccs_hello
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ccs_hello
Post Laureate
Reged: 07/03/04
Posts: 3300
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Quote:
Has anyone tried doing this with a Nikon? There is a similar app for the D3/D300/D700 that captures liveview video that I just found: http://ogiroux.wordpress.com/2009/02/26/your-d700-shoots-video-too/
I'm going to give it a try with my d300 as soon as the weather clears (so maybe next year or something?)...
That's an interesting suggestion.
Don't know if "star eater" algorithm would be kicked in during Liveview situation or not...
Clear Skies!
ccs_hello
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Samir Kharusi
scholastic sledgehammer
Reged: 06/14/05
Posts: 986
Loc: Oman
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Perhaps you could put that in simpler English? My mother tongue is Swahili  What are you trying to say? Use a larger effective pixel size? How large? That very likely applies when you shoot in one of the HD Video modes in which many suspect is a simple non-Read of in-between pixels, so that the line count ends up at 1080 (or 720). But in LiveView mode it does look like each pixel does get read, especially at the 5x magnification that ImagesPlus uses to record. The frames per second does seem a lot slower than 30fps though. Perhaps that's how the camera copes? Or do your comments apply to LiveView without the 5x (or 10x) magnification?
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Bored? Peruse my website:
http://www.samirkharusi.net/
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ccs_hello
Post Laureate
Reged: 07/03/04
Posts: 3300
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Samir,
Liveview during 5x and 10x magnification is ROI (Region of interest) selected readout. So in a properly designed DSLR Liveview, there is little or no subsampling taken place.
Clear Skies!
ccs_hello
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SGT500
Carpal Tunnel
Reged: 10/03/06
Posts: 2922
Loc: Ny
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Quote:
Samir,
Liveview during 5x and 10x magnification is ROI (Region of interest) selected readout. So in a properly designed DSLR Liveview, there is little or no subsampling taken place.
Clear Skies!
ccs_hello
Good to know. thank you
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-Sal
AstroTech Ritchey Chretien 8"
Williams Optics Zenithstar 80
Orion Atlas Eq-G
Hap Griffin Modified Canon Eos Xs (1000D)
My Astrophotography Gallery
My Sketch Gallery
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ccs_hello
Post Laureate
Reged: 07/03/04
Posts: 3300
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Just a note/info from the SourceForge EOS Movrec
resolution:
450D - 848x560,
40D, 50D - 1024x680,
1000D - 768x512
compression algorithm: M-JPEG encapsulated in AVI
Clear Skies!
ccs_hello
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