Yes, offset varies from model to model, but also from camera specimen to camera. So two ASI533MC could have different offset. A lookup table could be valid only if we put there maximum values. It will be better to have a "sensor analysis tool" as sharpcap has. Also, you can perform this analysis by hand:

1. Put the cap on the camera / telescope.
2. Set the desired gain and enable cooling if your camera has the option.
3. Put offset to 0.
4. Take a 30s dark

You can see that the maximum histogram peak is to the left, touching the zero border. This will mean shadow clipping, so you need to increase the offset. Increment offset by 5 or 10 and repeat. Repeat until you can see a gap between the left histogram border and the beginning of the dark frame maximum peak. This will be the optimal offset for your camera at this gain (maximum range and no shadow clipping).

I've performed this analysis on my ASI533MC and a good offset for me is 30 at unit gain. The ASCOM driver for this camera has a backed in value of 70 that is safe from the point of view of manufacturing tolerances, but very high for my concrete sample :).

So if INDI ends having an offsets table defined, I hope that those values will be only recommendation and we can override them.

Regards

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rbarberac replied to the topic 'Astroberry w/ ASI462MC' in the forum. 4 days ago

Yes the QHY462C works. I’ve been using on 2.7 beta. I’ve been helping Torsten lately with the raspberry support.

Please, could you try to download the .deb package from FC site? Doble click on it and let it installed on /opt.

Please double check that you have installed libusb. If not, please use apt install libusb.

If it doesn’t work, could you send the log file?

Thanks

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Any news about 3.5.3 on Astroberry?

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rbarberac replied to the topic 'Scheduler Start/Stop Times' in the forum. 1 month ago

Yes, it will be very useful to be able to abort a job as soon as an altitude limit is reached. If this limit is useful to star a job, the same utility lies on finishing it. Good point

Rafa

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rbarberac replied to the topic 'AstroPi3 Scripts revised' in the forum. 1 month ago

Hi Alan,

Take a look to this thread indilib.org/forum/development/9372-compi...t-github-source.html. I've successfully compiled KStars/Ekos on 64bits Raspbian using the commit commented on this thread.

Rafa

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rbarberac replied to the topic 'AstroPi3 Scripts revised' in the forum. 1 month ago

With the new Raspbian 64bits, the version of curl installed doesn't shows a textual description of the response. you can replace line 37:

if [[ "${testCommand}" == *"OK"* || "${testCommand}" == *"Moved"* ]]

with
if [[ "${testCommand}" == *"200"* || "${testCommand}" == *"301"* ]]

With this changes I was able to build an AstroPi3 64bits system. Unfortunately at this moment, KStars fails at build time.

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rbarberac replied to the topic 'Plate solving and WCS?' in the forum. 1 month ago

Yes, the WCS information is in the FITS header. You can identify it on this lines:

OBJCTRA = ' 8 53 43.47'                               / Object J2000 RA in Hours
OBJCTDEC= '57 48 41.20'                            / Object J2000 DEC in Degrees
RA      = 1.334311E+02                              / Object J2000 RA in Degrees
DEC     = 5.781144E+01                             / Object J2000 DEC in Degrees
EQUINOX = 2000                                                         / Equinox
​​​​​​

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