Astroart Forum

Hello, I don't understand well the question, do you mean a Macro ? There's the commands "Define Macro" and "Apply Macro", then you can launch them with the "1" "2" "3" "4" buttons. inside a script you could use: Image.Macro(n) to launch a macro. or Image.Formula() Or maybe you meant that from the Se...

Hello, are you sure about the 8000? Usually when there's a signed/unsigned problem in supporting FITS the background is wrongly read as 32000. By the way: unsigned data does not exist in the FITS standard, if an image has a range 0..65535 (like your light images) then the ADUs must be shifted into t...

OK.
Using the fullframe autofocus there's no need to search for a bright star, just autofocus on the same field of the subject. The combined measure of all stars of the field can actually be better and safer than a single measure on a brighter star.

Hello, usually there is no need to use a bright reference star. For automatic surveys is simpler to do: 1) An approximate telescope GOTO. 2) A short exposure (5 seconds). 3) Plate solve. 4) Telescope Sync. 5) Small GOTO to the correct position. The steps 3-5 can be done in one click with the command...

The problem is that the D80 is not supported by the c++ Nikon SDK. The D80 only comes with a separate c SDK from 2008, this means that to support this camera a new plugin should be developed from scratch. The Astroart plugin for Nikon only works in Bulb mode for long exposures, so for cameras before...

Hello, the D80 cannot be supported. It's also not supported by the latest Nikon SDK c++. the D5000 can be supported if you have the DSUSB cable (because the camera cannot start Bulb exposures via USB), you will need to download an additional file, if you are interested please write me by PM or email...

I think that it means "... it can be corrected with a bias frame (if you don't use dark frames)".
So I suggest to try with Light Images and Dark Frames only (taken at the same temperature and same exposure time).

Hello, the FFT can detect and correct a pattern only if it's present on the whole image, but here unfortunately it's present only on a side of the sun.
I cannot imagine any automatic processing which could correct something like that..

OK thanks, it will be added to SP4.
Fabio.

Hello, the problem is visible also on the single image, it's only masked by noise. For example, in the last image of the first post, if you remove stars with the command "Ring Median" radius = 60 then the problem is visible. You can verify if it's amplifier glow or charge accumulation if the problem...

Hi, as shown on the Astroart status bar, these are peculiar floating point images with the range 0.00 - 1.00 (?) So the stars will have a S/N of almost zero. To align and/or collect stars you need to recover an acceptable ADU range, so after having opened the images press CTRL+N (or the button "X") ...

Maybe the defect is "inside" the flats/darks/bias : try the same preprocessing without any of those.