Beginers question, ASTP does not stack my FITS
Stacking program, astrometric (plate) solver, fits file viewer
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han59
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Hello, I am a newby with ASTAB and I have some questions. The first time after installing the program it work fine. I use ASTAP with a Linux laptop and sometimes with Windows 10. Both versions have the same problems. I capture my photos with a ALCCD5LII and a 135mm Walimex lens. The capture software is EKOS.
When I analyse the files in stack menu, the HFT value is 99,0, Quality is 0. One frame I attached. What is the problem?
Sorry for my poor english...
Thanks in advance!
Greetings, Michael
Hello Michael,
The exposure time is one second. That is very short for detection. Furthermore it is an uncooled QGY5II-C. This is a sensitive camera but noisy and it works better with dark subtraction.
If you want to analyse and stack images, take images with at least 10 seconds exposure. Create some darks of the same exposure time. Add the images to the images tab and the darks to the dark tab. Then it should work.
Han
An other problem could be the very small stars point. But first expose a little longer.
Hello Hank, thank you for the answer. Yesterday were poor conditions, the Moon was shining bright. I have make darks. What wondering me, is that since the last update it does not work. With the old version a lot of serials with the same equipment works well. See attachment.
What settings for stacking did you recommand?
Greetings, Michael
The second thing is, taht the windows version is crashing, wenn the i call the stack menu - see attachment. The plate solving works, stacking not possible.
Thank you, Michael
There are no important changes in the stack menu. Best is to select "sigma clip average" and keep the rest default.
Easiest way to investigate what' s wrong is to reproduce you problem here. Can you share your images and give me the link to them. e.g. by google drive or zip them in one file and upload the file to:
https://ufile.io/
And send me the link.
Hello Hank,
thank you for the support! The link is https://ufile.io/4cwqgceo
I am very curios about the result and the right settings in ASTAP
Greetings,
Michael
Michael,
I have downloaded and look to the images. There is is not much ASTAP can do with these images. One second is just too short. I assume there are stars visible but there is no Gaussian shapes visible. They look often like hot pixels. Can you expose longer something like 10 to 60 seconds and then we can try again?
Cheers, Han
Hello Han,
thank you for testing my photos! The condition of weather were poor, when the weather will be better and without moonlight, I will try again.
Greetings form Mittenwalde,
Michael