Image download issue with SGP

[tomato]

With a hint of clear sky tonight I have been trying to progress using SGP to control my image capture process. I have got everything connected (Moravian G2-8300 camera) and can run an error free sequence, the problem is when I view the downloaded and saved sub images, they have vertical bright columns emanating from the brighter stars. I took another frame of the same exposure time using the Moravian SIPS software, this looks fine with no artifacts.

I have checked that SGP is downloading the data in the low noise option, and I have checked that the 240V AC power cable which runs through the same conduit to the dome as the usb cables is off.

Any thoughts/ideas would be greatly appreciated.

 

[sloz1664]

That's strange, have you posted on the Main Sequence forum site and, also, which SGPro ver. are you using? Usual suspects are cables, in particular usb. But it is strange how two software programs differ.

Steve

[Tomatobro]

as they are only appearing from the brightest stars is it a saturation issue I wonder

[tomato]

They are the same exposure times so I don’t think it is saturation. Also the same cable so that is strange.

However, when powering down (the clouds returned) I did note that the on scope voltage display was only reading 12.1 v when the Peltier cooler was switching in on the camera. At that voltage, maybe download artefacts are being created (but why only with SGP?). I can try upping the volts a little on the next session?

Steve, I haven’t yet posted on the forum, I still am on the free 45 day trial. I was hoping someone on SGL may have encountered this. However, if no joy here I will try the forum. I’ve only recently downloaded the software, I think it is v 3.0.3.169.

[Tomatobro]

I saw on Cloudy Nights that someone was having this issue with a DSLR on the Pleiades  but in the follow up no resolution emerged.

Take a look at https://www.eso.org/~ohainaut/ccd/CCD_artifacts.html

 

Edited November 26, 2019 by Tomatobro
new data

[martin_h]

When using SGP are you using the Ascom driver? Just wondering if there id an anti blooming setting in the native software that is not set in the ascom driver?

[tomato]

Thanks for this, You may well be right, I will investigate further.

[Starflyer]

It's likely that the Moravian capture software is using the native driver.  In SGP you'll be using the ASCOM driver, I don't know the camera but the ASCOM driver or a seeing within it is causing this.