I forgot your drift needs to be 45 degree to the pixel array so twist your camera so the image drifts from one corner to the opposite corner.

Cheers Rod

Hi I have the same problem with my QHY5 II M I have found that having a little drifting of the image removes this. I can set the speed of my RA motor so this is easy to do on my scope but if you are quartz locked you can't do that. You could try leaving the RA motor off when recording as the drift o...

Hi Maurits Yep the second image shows the info is all there and easy to bring out once it has been flattened. I will be up for trying Valery's method when I get my full disk setup it does sound good. One tip I use for deep sky flats is a white drum skin over the objective pointed at the sky or a lig...

Hi I had another play with the image.
Shadows and highlights and added colour.
Not to bad, maybe a little over processed in places but does show some even detail.

Oops put the Tiff on sorry

Hi Maurits Hope you don't mind but I had a play with your image above as I am interested in the same thing, removing variations in brightness. It sort of works but as Mark says you can't remove the bandpass variations. What I did was copy your image, then I saved two copies. One copy I used gaussian...

I cant see anything visually though

Looking at GONG images it looks like a sun spot is just coming into view

Rod

Hi nice image Paul
I just got a 5min break in the clouds and wanted to report some lovely detail in the spot near the edge of the sun
It has developed into a ring of very small spots with a bright centre in Ha light
good target for high res imaging

Rod

Hi
Thanks for the update
Rod

Hi
have you done any more with the solar scout?
Also how do you find the visual image and the tuning?

Rod

Hi Mark I totally get the transparency issue, not as much of a problem with a smaller object like a planet but the sun being so large can have many moving brightness across it that sometimes the staking software cannot cope with. Varying transparency is a major problem here in the Peak District as a...

Hi Peter It is and always has been an interesting argument this one. Many visual planetary observers preferred slightly hazy seeing because of the stable air that comes along with it, their reason for this is you record what is actually there and not fleeting glances of your imagination. This argume...

Very nice detailed images Mark Do you think that the haze actually works in our favor much like for planetary imaging and viewing? When it is hazy much more of the atmosphere is stable, this makes for better frame rates and although the contrast is a little lower it is much easier to get good focus....

Thanks Alexandra for the positive comments. Your quite right about the house building in the UK. The reason we moved here was to get away from the light pollution. the interesting thing is on the plans for four houses the builders put in garages across the access to the fields behind and then they n...

Hi Valery I get your point My biggest problem is seeing though and I think at f40 I will be pushing it. Science building the observatory UK planning laws have relaxed, I did have a lovely clear horizon to the west but now I have a house to the west almost on top of me so limited to 30 degrees above ...

Hi lovely images
The prom was very nice today I spent quite a while viewing it visually.

Rod

Thanks Mark I will have to work on my processing but it is coming along. You are quite right I am going to try a PST mod next, I have been working on one with Andrew on a vixen 110mm so will transfer that to the Zeiss the only problem will be the small sweet spot tof the PST etalon at 2250 focal len...

Hi just a crude mosaic with the Omega Ha filters from yesterday
sadly the QHY5 is hit and miss with vertical lines but I will stick with it until I get a better filter system

Nice
if only

Magic

Thanks Alexandra
yes it has been a lot of work but interesting
It also works on proms quite well

Nice one
I love the way the prom comes out of nowhere and jumps round the sun impressive so much more info than a still
Rod

Thanks Mark For a while I never thought the filters were ever going to work. But now I can see something I have the solar bug. When I had one of the first PSTs I always thought about ripping it apart and was sure it would work but there was not enough info back then no one had done it. What I have l...

Hi You could try this at the front it would stop quite a bit of heat buildup in the scope https://www.ebay.co.uk/itm/B-W-UV-IR-Sperrfilter-486-112-mm-MRC-F-Pro-1070174-NEU-OVP/263472979787?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649 The graph seems to fit the bill and as far as I can ...