Martaniu

On the star adventurer there is a screw to slowly turn the part where the camera is mounted to. I turn that one to turn the camera just a bit between pictures. There also are two buttons to rotate the tracker slightly faster than usual. I use them to turn the mount a bit between exposures aswell. I am not adjusting the polar alignment screws or anything like that.

I have a Pentax KP that I am using for astrophotography since I am not that deep into it yet. I discovered that there is a built in system called "astrotracer" to take astrophotography pictures. Since I don't have a GPS Unit though its fairly useless. So a couple of months ago I bought a Skywatcher Star Adventurer to start with tracked pictures. So far I have dithered my subs manually by adjusting the screws on the mount but I am wondering if its possible to use the in built feature "Astrotracer" to dither the frames. Anyone got any experience with that?

I had a look through my settings and this option is disabled.

I set the star detection threshold to 23%. With that setting DSS found roughly 50 stars to stack. It stacked roughly 280~ out of 400 pictures if I remember correctly. The Bayer pattern is RGBG like Blue Straggler suggested.

First up my gear: Pentax-KP Tripod 300mm prime lens The last few weeks I started to collect data for the orion nebula to try my luck with deep sky photography. As you can see I dont have a star tracker so I took *alot* of very short exposures (0.8s) with ISO 102400. After I took them I took my calibration frames just like I read about on astrobackyards website. I then stuffed everything into DSS, clicked the recommended settings button, set the amount of pctures to stack to 85% and waited. What came out in the end was an RGB image with the red channel just uniformly grey. So I had a look at my red channel in the light frames and there was definetly data there. So I thought it might have something to do with my calibration frames so I just ran a stack without any. Out came a picture with a nearly completely white red channel. So I decreased the brightness quite a bit and upped the contrast and saw a great white dot in the middle of my picture. I have no idea anymore what caused this. I checked all my light frames and of none of them have a bright flash or anything in the middle. I dont know what else I could try anymore. Thanks in advance for your help Small Update I have used a 24mm for a widefield image at ISO 51200 and after stacking the red channel was completely normal and the picture came out just like I hoped it would. But trying the same nebula (Orion) at ISO 51200 brought out the same error in my red channel as with the first try. I am getting more and more confused as to what caused this.