I recently took multiple 1 sec exposures of the lagoon nebula due to limited tracking capabilities, but when I brought the 1100 images into siril and started the osc preprocessing without dbf script it didn't work as it said it needed 320 gb of data for this process, so i tried to do it on a hard disk drive but that was taking days, how do I fix this issue and not have to wait a week for the images to finish processing?
siril won't let me process because it says I need more space
1 sec. exposure on a deep sky object?
I doubt you will get much with that.
Try instead longer exposures. You can try 30 to 60 sec. With short focal lenght even unguided you should get some results.
I doubt you will get much with that.
Try instead longer exposures. You can try 30 to 60 sec. With short focal lenght even unguided you should get some results.
The easy and free solution is to just wait for the process to finish. This is a reminder that mechanical hard drives are kind of obsolete and you should really only get SSDs these days. It should still only take a few hours tops (with typical hard drive write speeds - Siril is mostly limited by hard drive write speed in this case).
Another solution is to reduce the file sizes somehow before handing them over to the script. You can bin the images x2 to reduce file size or you could crop them if you have extra sensor space to spare around the target.
But really, you should definitely get an SSD. 320gb is not really a large dataset so you'll definitely want to improve your hard drive situation in the near future.
Another solution is to reduce the file sizes somehow before handing them over to the script. You can bin the images x2 to reduce file size or you could crop them if you have extra sensor space to spare around the target.
But really, you should definitely get an SSD. 320gb is not really a large dataset so you'll definitely want to improve your hard drive situation in the near future.
Helpful
You can probably get away will longer exposures, 4-5 seconds to reduce the total number of exposures and should do the work on an internal SSD drive.
You can break the task in chunks, say of 110 images, and then add the partial results in a single master frame but even with a (gulp) seestar you should really be able to go longer than 1 second.
Nikolaos Bafitis:
I recently took multiple 1 sec exposures of the lagoon nebula due to limited tracking capabilities, but when I brought the 1100 images into siril and started the osc preprocessing without dbf script it didn't work as it said it needed 320 gb of data for this process, so i tried to do it on a hard disk drive but that was taking days, how do I fix this issue and not have to wait a week for the images to finish processing?
Siril is one of the fastest software when it comes to stacking. One suggestion I can give is to manually stack your images. Once calibrated, then you can crop the image sequence to your liking. That will reduce the file size without compromising on the resolution. After registration you can also reject frames on the basis of different criteria in the stacking tab (FWHM, number of stars, roundness etc etc). I don't know your system or your seeing conditions so won't be able to help there. But if you don't stack the data you would never know how good or bad it is. Manual stacking gives you more control.
For speed, in general, your computer processor is what would ultimately determine the time it takes to stack. Till few months back, I was stacking using 2017 Macbook which took ages. However, I recently moved to M2 pro mini and stacking time has considerably reduced and the whole process is less frustrating. Hope this helps.
Helpful
Nikolaos Bafitis:
I recently took multiple 1 sec exposures of the lagoon nebula due to limited tracking capabilities, but when I brought the 1100 images into siril and started the osc preprocessing without dbf script it didn't work as it said it needed 320 gb of data for this process, so i tried to do it on a hard disk drive but that was taking days, how do I fix this issue and not have to wait a week for the images to finish processing?
Buy a 1TB Crucial SSD, they're dirt cheap nowadays.