Drizzle

[ajbarr]

Hi. I am just starting to experiment with Drizzle. One thing I am not quite sure of is that once complete Drizzle Integration doubles the size of the image. At that point does one need to resize it down to smaller proportions or do you just use the larger size image?

Thanks

Albert

[jkmorse]

Depends on your space requirements re file size.  If you have the room, no need to rescale down.

Jim

[Juan Conejero]

Hi Albert,

You don't need to rescale the drizzle integrated file. I strongly recommend you read the original paper where the drizzle algorithm is described in detail.

[naavis]

Hi. I am just starting to experiment with Drizzle. One thing I am not quite sure of is that once complete Drizzle Integration doubles the size of the image. At that point does one need to resize it down to smaller proportions or do you just use the larger size image?

Thanks

Albert

The whole point of the drizzle algorithm is to get larger images (more resolution).

[MortenBalling]

I think an important point is how to present the final image. For a final version, I would normally resample to 66 or even 50% for the internet. Working at full resolution has some advantages though. You work a lot more critical with your settings, and it is easier to see what you're doing.

Drizzle is a great tool, but before that, I used to resample my registration reference frame to 200%, and reached pretty similar results after deconvolution.

All in all: Do exactly what you feel looks right. I think most of us started doing all this, because we looked at all those Hubble photos and went uhhh! and ahhh! The point is that a large majority of the astro photos I see, seems to be made to show the strange aesthetic beauty of our Universe. Even though we feel very scientific while we make them.

Br

Morten