QHYCCD

reflections issue ?

reflections issue ?
« on: October 06, 2019, 07:32:33 am »
I have been using the CFW3 filter wheel and 36 mm LRGB filters for several months. I have a problem that I can't deal with. Stripes appear in the pictures. They are also on flat, but slightly less visible. Calibration does not remove this. I've already turned the filters over, but then it's even worse.
« Last Edit: October 06, 2019, 07:39:55 am by Marek Koenig »

Re: reflections issue ?
« Reply #1 on: October 07, 2019, 08:32:01 pm »
Can I send me a picture in FIT format? This helps me judge the type of stripes.

« Last Edit: October 09, 2019, 03:10:49 am by Marek Koenig »

Re: reflections issue ?
« Reply #3 on: October 10, 2019, 11:26:54 pm »
Which method do you use to shoot the flat field? Is the method of using skylight flat field?

Re: reflections issue ?
« Reply #4 on: October 11, 2019, 09:51:11 am »
Which method do you use to shoot the flat field? Is the method of using skylight flat field?

Yes, skylight.

Re: reflections issue ?
« Reply #5 on: October 11, 2019, 09:02:22 pm »
Have you tried to remove the CFW shooting flat? Still there are stripes? QHY163 How long have you been using it? Is it a fog in the sealed chamber, you can screw it on the drying tube and dry it.

Re: reflections issue ?
« Reply #6 on: October 12, 2019, 02:45:44 am »
Have you tried to remove the CFW shooting flat? Still there are stripes? QHY163 How long have you been using it? Is it a fog in the sealed chamber, you can screw it on the drying tube and dry it.
I've had this camera for a year, This is my second qhy163m, the previous one broke down and was replaced. I've already dried the camera twice, so it's not fog. I have this problem since I use CFW3 and LHGB QHY 36mm filters. I used Baader 1.25 filters before and I didn't have such problems. Flats do not remove these horizontal lines

Re: reflections issue ?
« Reply #7 on: Today at 08:38:41 pm »
We must first confirm that the horizontal stripes are from the camera or the filter. If we can use the previous Bader 1.25 filters to verify, it is more helpful to judge it.