Thomas Stibor's profile

Then it looks like the problem could be introduced with e.g. commit Make sure when subframing that we are still within range of the actual image resolution
How about git checkout one commit before, compile and see what happens?

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Another approach is to edit

$HOME/.indi/<DSLR_MODEL>_config.xml

and adjust the proper settings.
The re-load in INDI property window the settings and it should work

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Hi there,

as Jasem said, it is already implemented in gphoto2 driver.
During build process it is checked whether the used libraw library supports the functionality

CHECK_STRUCT_HAS_MEMBER("libraw_imgother_t" CameraTemperature "libraw/libraw_types.h" HAVE_LIBRAW_CAMERA_TEMPERATURE LANGUAGE C)
if (HAVE_LIBRAW_CAMERA_TEMPERATURE)
  set(LIBRAW_CAMERA_TEMPERATURE 1)
  message(STATUS "Found CameraTemperature in 'libraw/libraw_types.h'")
endif ()

CHECK_STRUCT_HAS_MEMBER("libraw_imgother_t" SensorTemperature "libraw/libraw_types.h" HAVE_LIBRAW_SENSOR_TEMPERATURE LANGUAGE C)
if (HAVE_LIBRAW_SENSOR_TEMPERATURE)
  set(LIBRAW_SENSOR_TEMPERATURE 1)
  message(STATUS "Found SensorTemperature in 'libraw/libraw_types.h'")
endif ()

If libraw supports this functionality and the temperature information is also available and embedded in the DSLR RAW file, then it is read out

if (lib_raw.imgdata.other.SensorTemperature > -273.15f)
        gphoto->last_sensor_temp = lib_raw.imgdata.other.SensorTemperature;
else if (lib_raw.imgdata.other.CameraTemperature > -273.15f)
        gphoto->last_sensor_temp = lib_raw.imgdata.other.CameraTemperature;

and provided in the INDI framework, for e.g. save it as a FIT keyword.

if (isTemperatureSupported)
                {
                    double cameraTemperature = static_cast<double>(gphoto_get_last_sensor_temperature(gphotodrv));
                    if (fabs(cameraTemperature - TemperatureN[0].value) > 0.01)
                    {
                        // Check if we are getting bogus temperature values and set property to alert
                        // unless it is already set
                        if (cameraTemperature < MINUMUM_CAMERA_TEMPERATURE)
                        {
                            if (TemperatureNP.s != IPS_ALERT)
                            {
                                TemperatureNP.s = IPS_ALERT;
                                IDSetNumber(&TemperatureNP, nullptr);
                            }
                        }
                        else
                        {
                            TemperatureNP.s = IPS_OK;
                            TemperatureN[0].value = cameraTemperature;
                            IDSetNumber(&TemperatureNP, nullptr);
                        }
                    }
                }

Which INDI

indi_dmfc_focus

version are you using? I have the Pegasus FocusCube2 and also noticed problems with "reverse enabled" and other minor issues.
The problems though should be fixed in master, see commits:

Fix enabling/disabling DMFC properties and remove dead code
Fix select motortype, reverse status and enable focuser backlash
Enable saving/loading backlash steps and fix motor type select

Can you try running with the provided patches and also provides collected DEBUG LOGS.

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There is an excellent book/tutorial CCD Data Reduction Guide
that explains in very great detail with Python (astropy) code how actually an astronomical CCD image is formed.
In chapter Understanding an astronomical CCD image
is written:

An offset voltage called bias is applied to the CCD chip to ensure there are no negative counts during readout. There are small variations in the value of the bias across the chip, and there can be small variations in the bias level over time.

In sub chapter Construction of an artificial (but realistic) image
is explained in detail how a offset (bias) image is formed.

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If I am not mistaken, then then author of Astroberry also provides a DEB package repository (see https://www.astroberry.io/ ) So

>sudo apt-get update && sudo apt-get upgrade

should work, provided you have Internet connection and IP access to the repo. The core packages are actually located here: https://www.astroberry.io/repo/pool/main/libi/libindi/
What does apt policy show?

>apt policy indi-bin libindi1 libindi-data libindi-dev
indi-bin:
  Installed: 1.8.2
  Candidate: 1.8.2
  Version table:
 *** 1.8.2 100
        100 /var/lib/dpkg/status
     1.7.5+dfsg-1 500
        500 http://ftp.de.debian.org/debian buster/main amd64 Packages
libindi1:
  Installed: 1.8.2
  Candidate: 1.8.2
  Version table:
 *** 1.8.2 100
        100 /var/lib/dpkg/status
libindi-data:
  Installed: 1.8.2
  Candidate: 1.8.2
  Version table:
 *** 1.8.2 100
        100 /var/lib/dpkg/status
     1.7.5+dfsg-1 500
        500 http://ftp.de.debian.org/debian buster/main amd64 Packages
        500 http://ftp.de.debian.org/debian buster/main i386 Packages
libindi-dev:
  Installed: 1.8.2
  Candidate: 1.8.2
  Version table:
 *** 1.8.2 100
        100 /var/lib/dpkg/status
     1.7.5+dfsg-1 500
        500 http://ftp.de.debian.org/debian buster/main amd64 Packages

Note, the official Debian Buster packages are on version, 1.7.5. One can easily build packages e.g. as follows:

#!/bin/bash

MAIN_PATH=$(pwd)
DEB_CORE_PATH=deb_core
DEB_EXTRA_PATH=deb_extra

# Build indi core.
rm -rf ${MAIN_PATH}/${DEB_CORE_PATH}
mkdir -p ${MAIN_PATH}/${DEB_CORE_PATH}

cd ${MAIN_PATH}/indi
dpkg-buildpackage -j$(nproc --all) -i -us -uc -b
cd ${MAIN_PATH}
mv *.{deb,buildinfo,changes} ${MAIN_PATH}/${DEB_CORE_PATH}

# Install indi core packages.
sudo dpkg --install ${MAIN_PATH}/${DEB_CORE_PATH}/*.deb

# Build following indi 3rdparty packages.
declare -a INDI_DRIVERS=( indi-eqmod indi-gpsd indi-gphoto indi-sx libatik indi-atik )
rm -rf ${MAIN_PATH}/${DEB_EXTRA_PATH}
mkdir -p ${MAIN_PATH}/${DEB_EXTRA_PATH}

for i in "${INDI_DRIVERS[@]}"
do
    mkdir -p ${MAIN_PATH}/${DEB_EXTRA_PATH}/${i}/{debian,${i},cmake_modules}
    cp -r ${MAIN_PATH}/indi-3rdparty/debian/${i}/* ${MAIN_PATH}/${DEB_EXTRA_PATH}/${i}/debian
    cp -r ${MAIN_PATH}/indi-3rdparty/${i}/* ${MAIN_PATH}/${DEB_EXTRA_PATH}/${i}/${i}
    cp -r ${MAIN_PATH}/indi-3rdparty/cmake_modules ${MAIN_PATH}/${DEB_EXTRA_PATH}/${i}
    cd ${MAIN_PATH}/${DEB_EXTRA_PATH}/${i}
    dpkg-buildpackage -j$(nproc --all) -i -us -uc -b

    if echo "${i}" | grep '^lib';
    then
	sudo dpkg --install ${MAIN_PATH}/${DEB_EXTRA_PATH}/${i}*.deb
    fi
done

# Install indi 3rdparty packages.
sudo dpkg --install ${MAIN_PATH}/${DEB_EXTRA_PATH}/*.deb