old FIT file year 2014

[carlomuccini]

I wanted to open an old FIT file from 2014 in deepsky camera. I click on browse, select the file but it doesn't load it, it doesn't do anything, it doesn't even give an error message.
It's not a serious problem ...

I attach the "incriminated" file, one of a series of 30 FITs but none of them opens

https://drive.google.com/file/d/1LRGdn8 ... sp=sharing


Carlo

[Menno555]

FITS Liberator recognises it and gives all the details. I also can open it in SiriL and Deep Sky Stacker.
The SC log shows: No support for loading image with -32 bits per pixel.
I presume the minus-symbol is the culprit but Robin for sure knows what that means

Menno

[turfpit]

Opens in Astro Pixel Processor 2.00 beta29
Opens in Pixinsight latest version
Opens in FITS Liberator 4
Fails in FITS Liberator 3 with 'could not load file, the selected file is not supported'

As Menno says it looks like the BITPIX=-32 is the culprit.

Dave

[admin]

Hi,

BITPIX=-32 is valid for fits and indicates that the file contains 32 bit *floating point* data, rather than 32 bit integer data.

However, SharpCap doesn't currently support reading 32 bit floating point fits files (and only has partial support for 32 bit integer fits file reading). The main problem is that SharpCap largely works internally with either 8 or 16 bit depths, with only some areas coping with 32 bit data. Loading a 32 bit FITS would therefore meant that detail would be thrown away as the file is loaded, which isn't ideal.

cheers,

Robin