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AIJ Max file size

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CrossoverManiac
CrossoverManiac's picture
AIJ Max file size

What is the largest .FIT file you processed with AIJ without it running out of memory?  I tried using AIJ to calibrate a batch of files 39 megs each and it conked out even though I set the allocated memory to over 6000 megs.  I need to know since I can keep my file size small either by binning or smaller ROI.

TRE
TRE's picture
39 MB

Are there any disadvantages to binning 3x3 on a 39MB chip?

Ray

CrossoverManiac
CrossoverManiac's picture
I would have to defocus my

I would have to defocus my scope to get FWHM on the required 3-5 pixels.  Right now, I'm at 2x2 binning and I reduced my resolution (region of interest) on my CMOS.  That got my .FIT image size to 4.5MB each.

arx
arx's picture
AIJ Max File Size

I don't know if it will solve your particular issue, but I always select 'Use Virtual Stack' in the Sequence Options dialog when I am importing an image sequence.

Roy

WBY
WBY's picture
AIJ Max file size

Roy, 

I don't think the problem is the image size. I think it is the memory needed for the sequence of images that are all being loaded into memory at once IF you load them without checking the box to use a virtual stack. . 

I think you will be ok if when you import the image sequence if you check that box. Earlier today I loaded a stack of 225 16 MB images and processed them without problem. I have loaded over 300 24 MB images in the past withoug a problem but only when the use virtual stack option is checked. With a virtual stack you essentailly have only one image )or perhas two or three) loaded in memory plus what amounts to an ordered list of pointers. 

Brad Walter, WBY

arx
arx's picture
AIJ Max File Size

Brad,

I didn't have the problem. It was CrossoverManiac who had the issue.

I mentioned Use Virtual Stack as a possible solution.

Roy

WBY
WBY's picture
AIJ Max Files

Roy, 

Well I have only been using the forum for a decade or so. Perhaps in another decade I will learn how to read it properly or, simply, how to read properly. 

Brad, WBY

arx
arx's picture
AIJ Max File Size

No problem Brad. I'm sometimes embarrassed by finding that I haven't read an email properly.

Roy

 

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