Laurin Dave

Very nice Goran... Pigs in Space eh... sorry couldn't resist

I've seen something similar when I've run StarX prior to stretching. My workflow is run BlurX, then stretch till the Stars are the size I want.. remove stars using StarX, further stretching using similar technique to @ollypenrice then colour manipulation, any further local contrast enhancement and/or sharpening, colour noise reduction, then NoiseX if necessary, then add the stars back in screen mode prior to a final polish. Maybe try that and see if it helps. Dave

I use Pixinsight to annotate images.. its a script... render... annotate

M81 M82 surroundings and the IFN. 17 hrs of 300sec subs at gain 0 offset 76 through Samyang135 at f2.8 and ASI2600mc all gathered whilst I was asleep . Processed in Pixinsight and Photoshop using Normalise scale gradient, and Rus Croman's Blur, Star and Noise Exterminators. Hi res data overlaid over M81 and M82 to give them a bit of colour. Thanks for looking Dave

The Lower half of Orion from the Bogeyman to the WitchHead. 12 Panel mosaic using a variety of scopes and incorporating data captured mostly using a Samyang135ASI2600 for RGB and also Samyang135ASI1600mm (from 2021) GT71QHY600 and Askar200QHY600 for Ha and Askar200QHY600 for Lum on the right hand side. Processed in Pixinsight and Photoshop. I've also attached an annotated version. Thanks for looking Dave

It's the glow around the bright stars between and around the Flaming Star and Tadpoles... notihng to worry about ..It's supposed to be there

Thanks Adrian.. Blur Exterminator does a marvellous job with the stars, I have the Nikon version of the lens so it's connected via one of ZWOs adapters which has degree of slop in it. Love the speed though and all the dust it brings out even from my Bortle4-5 skies. Very kind of you Thanks Goran. it was seeing you hoovering up photons like nobodies business with your RASA and colour camera that re-invigorated my use of this lens plus Russ Croman's apps which sort out the stars

Barnard's Loop, M78, The Belt and Sword of Orion, two panel mosaic with Samyang135 ASI2600mc, 4 hours per panel of 5 minute subs, gain zero, offset 76, lens at f2.8. Processed in Pixinsight and Photoshop, stars courtesy of Blur and Star Exterminators Thanks for looking Dave

Thanks Steve... yes SXT and BXT take quite a while.. 20 mins or so for this if I remember correctly .. gives me time to do some chores Dave

Thank you Reggie Thanks Scoot Thanks Adrian... yes its the dust for me too. Thanks Bob. The weather helped with many clear moonless nights during December and January as did the robotic observatory in the garden and being retired ! Thanks Craney Thanks Sunshine Thanks ONIKKINEN Thanks Pete.. I very much am, although it could do with a few more hours on some of he panels

Whilst not entirely acquired with a Samynag135 more than 80% was so thought it was ok to post here as well.. Dave

A multi panel (15plus) mosaic of dusty Taurus spanning about 25 by 18 degrees and including the Hyades, Pleiades, California Nebula, Northern Trifid (to the left of California) IC348, NGC1333, many LDN, LBN and Vdb objects plus Mars as it was 22 Dec22 and Comet 2022/E3 as it was 13 Feb23. Data acquired between late November 2022 and 13Feb2023 using primarily a Samyang135ASI2600mc, with 3 plus hrs on most panels and more over the Hyades, Pleiades and IC348 area, additional luminance data was captured through an Askar200QHY600 combo and applied over lower signal areas at top left and bottom right,. Ha data was also captured over the California Nebula through a GT71QHY600 combo. Processed in Pixinsight and Photoshop using PIs Normalise Scale Gradient, Mosaic by Co-ordinates and Photometric Merge Mosaic to align and merge the panels, Stretched initially in PI using ArcSinh, GHS and HT, then stars removed with Russ Croman's Star Exterminator, further stretching of Starless image in Pi, then colour enhancement, Ha and Lum blending in Photoshop before replacing the stars in Photoshop using Screen mode. Final levels and Noise Exterminator in PS. then resized to 12 arc sec/pp in PI. Thanks for looking Dave

Lovely deep image, dust and quite a few background galaxies .. Well done Dave

Brilliant work @tomato and @Tomatobro

The other thing that helps if you are trying to register a small piece of sky to a larger panel is to create a preview in the larger panel just a bit bigger than target and use the preview as the registration reference..

Very nice.. in PI have you tried ticking scale difference and increasing RANSAC? The other thing you can do ( and which I do for mosaics) is to plate solve each image and then use Mosaic by co-ordinates to re-project and register the images Dave

Here it is on my sky cam 20:01:30 Dave

Looks pretty good to me Olly.. if you want perfection you could try one of the Gerd Neumann Camera Tilting Units.. but really we're all just waiting to find out what one of these at f2 can do in your skies

Ive done a bit Olly, first attempt posted in this thread on 21st .. it was on a stack of 2 hrs or so.. seemed to do a good job with the corner stars although I have subsequently noticed that it can turn stars with coma into edge on spirals! Also it seems to remove the colour from the stars, I suspect because the colour is in the halo and that is massively reduced by BXT.. I’m going to experiment as to whether it’s best to extract luminance, BXT that, then recombine with separately processed using star removal RGB Dave

Wow!

Excellent... Great work Adam Dave

Excellent... well done!

Thank you, skies are Bortle 4-5, no filter used (except the UV/IR cut on the camera)

Two panel mosaic of the lower part of Orion.. 3hrs per panel, Samyang at f2.8, ASI2600mc, 300sec subs, Gain 0 Offset 76. Processed in Pixinsight and Photoshop. Sharpened with Blur Exterminator and Noise reduced with Noise Exterminator, gradient minimised using Normalise Scale Gradient in Pixinsight. Dave

Excellent Olly.. Hidden no longer!