# Fits viewver in python **URL:** \ **Category:** Astropy\ **Tags:** fits\ **Created:** [January 2, 2024, 10:36am UTC](https://community.openastronomy.org/t/fits-viewver-in-python/862 "2024-01-02T10:36:36Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Salvatore](https://avatars.discourse-cdn.com/v4/letter/s/ea666f/32.png) [@Salvatore](https://community.openastronomy.org/u/Salvatore)\ **Post date:** [January 2, 2024, 10:36am UTC](https://community.openastronomy.org/t/fits-viewver-in-python/862/1 "2024-01-02T10:36:36Z")
Hello, I’m new and learning python ( and i’m an amateur astrophotographer). In order to improve my progamming skill in python, i decided for my first project to try to implement a ( very basic) fits viever based on a gui library ( probably customtkinfra ). Its not going to be anything “scientific relevant”, just a very basic viever just to learn about python and astropy, and see how far I can go. At moment im reading a loot about astropy and the fits standard, and the first thing i noticed is that ( understandably ) most of astropy documentation refers to mono images. Since i use an OSC camera ( based on a imx571 sensor, like the asi2600 ) i understood i need to debayer it and looks like there are no funzions in astropy for that. Is that correct? Another thing i noticed is that the pictures i take are always datacubes:: Filename: ./test2.fits No. Name Ver Type Cards Dimensions Format 0 PRIMARY 1 PrimaryHDU 49 (6224, 4168, 3) float32 I’m trying to read the documentatrion of the fits standard, and i uderstood thath there can be 1to 999 “layers”, but i’m not sure hot to interpret them and that’s the logic behind. the fact that my images have exacly 3 layers ( why not 1? or 4 or 10? ). Should I just stack the 3 “layers” and then debayer it ( maybe using CV2 ) ? Thanks in advance, Salvatore ---
**Author:** ![pflm](https://avatars.discourse-cdn.com/v4/letter/p/ccd318/32.png) [@pflm](https://community.openastronomy.org/u/pflm)\ **Post date:** [January 20, 2024, 1:01pm UTC](https://community.openastronomy.org/t/fits-viewver-in-python/862/2 "2024-01-20T13:01:30Z")
Dear Salvatore, the AAVSO DSLR observers manual has some helpful information on the format of DSLR images. [Digital Single Lens Reflex (DSLR) Camera Observing Manual | aavso](https://www.aavso.org/dslr-camera-photometry-guide) You have an image cube because the software that has converted the images to FITS format has put the data for R, G and B pixels into separate 2-d images and packaged them up as a data cube. How you deal with these will depend on what you want to measure. -Pierre