Yawning Angel

Thank you!

Lovely! The colour pops almost 3D at full size

Yes, a manual slew each time. I eyeball a surface feature near the edge I'm moving towards, then slew till it's in the equivalent position on the other side. This gives me plenty of overlap for ICE to align the segments. You can see the overlap in these folder thumbnails

Thank you! I was amazed that my seeing held up as well as it did for the mosaic. I looks forward to seeing your rendition, Mike!

Thanks! I could almost wallpaper the house with it 🙂

On a whim, I mounted the C11 last night intending to do a bit of a shakedown of the setup after adding a new focus motor and powerbox. I got carried away. 47 panels, 500 frames each. C11, ProPlanet 642 filter with the asi178mm Stacked in AS!4.0.11, Mosaic in MS ICE, processed PixInsight and PS Click (34mb just under 12000 x 12000)

Thank you! I'll be redoing it from scratch when I add some more integration time, and I agree that there is a balance somewhere between those two.

It's been a few years since I tried the Iris Nebula from my B6 back garden. This is 5 hours of luminance and just over 2 hours of RGB, captured over 2 nights last week. APM 107 / asi1600m / Baader LRGB filters. Processed in PixInsight, including RC tools 3 processed versions. To my eyes and on my screen I'm torn between the Medium and Bold Light Medium Bold Thanks for looking!

Thanks! I see what you mean, yes. A second pair of eyes is invaluable! It's been a tricky one for me, and I'm sure to reprocess it several more times 🙂

Complete for now, 4 panels California nebula in Ha and Sii. Oiii is for another season now, sadly Choose your colour scheme 🙂

Tonight's moon, mono RGB capture at 700mm with an asi178mm. AS!4, Registax, MS ICE and Photoshop

You can see in the image where some of the issue comes from - AS! tracks the movement of features inside the alignment points you set, if the feature moves too much, it looses it's lock on the feature. I'd review the tiffs for outliers where the moon moved significantly and remove them, then restack the remainder with much a much larger AP size and see how it improves But as above, stack before any processing 🙂

The Nikon will produce compressed video...which you can use, but wont be the quality of the ASI, so the Barlow isn't needed. The beermat maths for sampling is an F ratio around 5x the pixel size. The 4SE is f/13, so you need to aim for 2.6nm ish. If you reduce it, the pixel size naturally shrinks too taking you further from ideal (your 224 has 3.75nm pixels). Of course, seeing plays a huge part, so these differences are less noticeable You could go for a asi178, which is 2.4nm too, but your 'best' option for FOV without glass (I'd avoid adding glass if it's not needed) would be an asi585 (or equiv from other manufacturers). The trade-off comes in framerate. The bigger the sensor, the slower they can readout. The 224 is blazing fast, and very easy to get along with

Personally, with those options I'd go for the asi224 without a reducer or barlow, and assemble a 2 x 2 mosaic of any given feature. Its pretty simple using Microsoft ICE (free) to assemble the mosaic, or you can have Photoshop do it...or you can even do it manually If you want to spend money, look at a camera with smaller pixels, to bring you closer to ideal sampling. 2.9nm maybe, from an asi290 / 662 / 664 or 585, depending on budget.

This has had the background cleaned up, stretched and SNCR green removal. BlurX to clean up the elongated stars a bit and then resized because it was insanely big 🙂 Autosave006a.tif Some colour in there, looking at the stars. With some more delicate work, I think the nebulosity might show more distinct colour too