RolandKol

Looks solid! I hope to see some NonCroped test results And I am Very curious, - what are these 4 bolts for?

Never had this scope... But my SW 130PDS had exactly the same egg shaped stars/coma while imaging without a coma corrector... However, your scope manufacturer states it should be coma free... Not sure, and do not know what collimation steps your already done, - maybe it could cause it, but I doubt it would for F8 system.

Not sure if it will help But after I have "circumcised" mine, - I used a black permanent marker to darken the place of the "injury"... And never had a problem... So cannot confirm... But Aluminum is very reflective.... it must be it.

You probably could... If you would adjust the focuser's base plate angle accordingly, - to keep drawtube at 90 degree angle. But l would not advise to go this way, unless you are experienced in collimation of the secondary mirror alongside with missplaced focuser...

I had the similar problem... Unfortunately, - not much advise from my side, as focusers on 130PDS are probably not the best quality (but for such a price!)... To solve the issue, I tensioned it a bit more than it was out of the box (to get rid of any possible tilt after meridian flip) and attached DIY autofocuser which holds cam+EFW in place and prevents possible slippage. .

I wonder how would "Elon Musk" look like on such a cam?

Hi again once more time... While playing around with the drawtube cap and Dark subs during a daytime I have diagnosed one disturbing hole in the scope... I wonder if everyone has it in the same place.... I flocked mine and I afraid I placed primary incorrectly. And usual temp solution which I don't like....

Hi guys, Just a funny toy or idea on how to make Dark subs even darker https://www.thingiverse.com/thing:4349721

In that case, it is most likely the best you can get... of course, if you would load up raw files to any kind of viewer and visually compare the first and the last image of each group, - you would be sure what has happened with the orientation. Sorry, but I have checked this post on the PC just now... Not sure if you were concerned about the frame... I would be more concerned about that pattern you've got... I never had/seen it before.... But it doesn't look like the error of the grouping... Maybe the cause of the Panel used for Flats... Or some other settings on DSS Sorry, Apollo13, I am not useful here

The problem, I image from under the trees.... They always add few tens of gigabits extra.... One leaf even looked like a slime... I was lucky!!! No Primary Mirror surgery were needed

I found a new method to download the huge amount of subs just in a few seconds!!! I have a slight feeling, l am not the first one who been entertaining neighborhood in such a manner

Apollo13... We need more data... Can you please check if both groups been pictured at the same camera orientation? I am sad to see it... Not sure what to advice...

And do not forget to test how your guiding performs after the Meridian Flip.. Especially if you balanced it East Heavy and you do not adjust weights after the flip. In my case, (it does not mean it will happen to you also), East Heavy was not an option... Yes, it had quite a better guiding results on the East side, but not on the West... So I stayed with a completely balanced setup with a bit worse, but constant guiding results (around 0.7 - 0.8 Total RMRS) on Both sides of the Meridian, but without any manual adjustments, - means, I can sleep. Before you push the guiding to the limits, - you should know values which are enough for your imaging. Thanks to @vlaiv who has explained it to me few years ago, however I am not so bright and do not remember all of the maths But as per your set up, - I am almost sure, even with 1 Total RMS error, - you will not notice much difference (or no difference at all) at the final image if you will compare it with 0.7 guiding. (especially with a shorter subs, - somewhere below 3min)

Looks like as doctor prescribed All good, Click Next! P.S. You can also choose the "best" Light sub you want the rest of the subs to be aligned to, if not, DSS will decide for you.

In my case with NEQ6 + 130PDS, guiding via EvoGuide +Asi120MM Mini If I increase subs to 2-3s, I get results above 1.2 Total RMS... 1s produces around 0.7 - 0.8 Total RMS, which is enough for me, plus, calibration and PHD graph settling gets faster on 1s Not everything works nice and as prescribed....

Mate! Your cooling system is much more impresive than the image of M51!!!!!!!!!!!!! Wow

Very nice result with such a cam I think to test mine on DSO also, but afraid to invest time in Bortle 8-9 skies.... Have you cooled it with cooler only? Or with peltier also?

Thanks, Anyway, l have a feeling, it can be done better Manual stacking is probably the way to go with a proper sub rejection formula. I hoe to find a free evening for that. As per cloud sensor, - unfortunately l am not bright enough to create one myself from scratch... And l cannot yet find any drafts online to reproduce...

Did my best... Anyway still very noisy..... I don't think I can do any better.... (all initial images used.... no time to sort best of the best for the next stack)...

Hi guys, I tried to enjoy the Moonless skies last week, "Mein Kampf" is described in the link below Would be glad if someone would advise on how to improve.... Increase gain, or reduce to 0? I am almost sure, any way I choose, LRGB will be noisy... very noisy... Maybe someone has a good link to RGB noise reduction tutorial on Pixinsight?

Thanks Adrian, And you are correct, - I do mostly go NB way, but in the current period of the year, all possible Nebulas are heavily guarded by my back-garden trees Plus, At LAST, I had some clear and Moonless skies, - so it was worth a try I am almost sure, - I will manage to improve this image by selecting better subs to stack, plus... I still suffer from the "two left hands" syndrome in the pixinsight area....

Semi-quick result from all that mess I have got... Extremely noisy....

This is RolandKol Dairy: G channel was finished at 18:43 Next day on 28/04/2020: L @04:51 B @13:27 Totals 2010 subs split into: L30s x 68 = 34min (hmmm should be around 1 hour... clouds... I hate clouds) L15s x 570 = 142.5min R30s x 461 = 230min G30s x 368 = 184min B30s x 543 = 271.5 min All in all, - 862min or 14.37 hours Stacking took 26 hours.... Lets see what it brings..... Will not repeat that ever again for sure (However, - maybe I should stack 20% best of the best, they probably have less high-level clouds??? and compare??? hmm... But how to choose them? OK, - not now... someday... PC needs some rest...)

This is RolandKol Dairy: 15:27 The first one, R channel, not yet integrated.... (I was way too optimistic thinking 5 hours will be enough....) 15:34 R channel Finished... (goodness)

This is RolandKol Dairy: 11:46 PixInsight got frozen... Decided to wait and see if it will get back to work.... 12:00 PixInsight alive and back in action! it was close! Current process, - "Integration of R channel". Soon I will have 1 file to compare with the previous one.