MarkAR

Number two floats my boat, lovely images.

Certainly does to me.

Superb images.

Probably not detecting enough of the right stars. I believe it works by plate solving.

Realise now these were taken with a pretty bright moon earlier in the month.

Maybe try PhotometricColourCalibration.

I'm thinking gravitational pull of the earth plus heating and cooling.

Looks pretty good to me, maybe a touch red. That sounds like an idea I might try, just started with PI and saw there is a noise reduction script that is supposed to work well on gray scale images.

Had another bash but left it wide field. The noise now looks like pale nebulosity !!!

Thanks Adrian, for some reason I find PI a bit easier to fathom the way it works with previews than I do PS or Gimp and layers. Yes, dithered on capture.

Cheers for the comments guys. Also just realised there is another little smudger towards the bottom left. IIRC I used DBE, Multiscale Linear Transform , might have used a wavelets as well can't remember. Played around with other things just to see if there were any background improvements but I think the main problem might be unbalanced darks/bias/flats on top of losing orientation when I had to bring my gear in a couple of times. It's a fairly heavy crop but one thing is that drizzling definitely improved the stack so it would have been a lot worse without drizzle. I'm going to have another bash using the Pixinsight LRGB videos. One question comes to mind, would you de-noise the RGB before adding the L or after?

Hi All, been playing around with Pixinsight and this is what I came up with. Subs and flats are not the greatest as I had to break down my set up a couple of times and the image triain was disturbed a little. Had some patchy background noise with I couldn't resolve so cropped the worst if it out.

I was under the impression that if you dither, you should drizzle.

The Canon definitely will not let you use the internal intervalometer in Bulb mode so you will be restricted to 30s. You will either need to get an intervalometer or control it via software on a computer to set up multiple longer exposures.

OMG that is stunning. Wonderful detail.

First one looks better to me, more natural and the outlying arms show more. Both good images though.

Good detail and great colour balance, well done.

The Celestron is supposed to be very good.

Maths look correct, so you'll be 0.7mm over with the rotator and no extension. Depending on how accurate the optical measurement given for the coma corrector back focus is I don't think you'll have a problem.

It certainly is.

Finally arrived 15 days after being posted. Gives a new meaning to snail mail.

Great images, well done.

Big improvement, well done.

Lovely shot, you've managed more than most tonight.

Well here's mine.