Out of all my bright, single star images, I think this one is my favourite. Sirius – the brightest star in the sky. Two-frame (vertical) mosaic with camera in landscape mode. 3 x Sky90 refractors and 3 x M26C (non-Trius) OSC CCD cameras. Each frame is 90-minutes of 2-minute subs (so that’s actually 270-minutes of actual exposure time per frame).
There is a LOT more to the California nebula than you usually see in the posted images. This is 24 x 20-minute subs taken with the Canon 200mm prime lenses, ASI 2600MC Pro OSC CMOS cameras, and the Optolong L-Enhance filters. Notice the long “nose” which is usually absent on images of this one. I wonder how much more I can get out of this one by getting more subs?
The Horsehead nebula and the Belt Stars of Orion region. This is a 2-frame mosaic using a single Sky90 and a single M25C OSC CCD. H-alpha and OIII data was also included. Imaging time around 4-hours (or more) per frame. This version is with the star reduction app that works with Russ Croman’s StarXTerminator.
I recently downloaded the free evaluation copy of Russ Croman’s StarXTerminator program – which basically does what it says on the tin. I also saw a recent James Webb Space Telescope (JWST) on APOD and was once again flabbergasted at the absolutely dreadful EIGHT diffraction spikes around bright stars. So I thought I would try an experiment and see what StarXTerminator would do on a JWST image. I was expecting StarXTerminator to do a good job on removing stars but I was expecting it to leave a lot of the diffraction spikes behind. In the images above you can actually see what happened. StarXTerminator did an absolutely superb job on removing both stars AND diffraction spikes. A quick run of “Despeckle” in Photoshop really cleaned up the background and the “Spot Healing Brush” tool cleared up a couple of stragglers. I really think Russ should be in serious discussion with NASA on how to clean up their JWST images.
I have been recently beta-testing Noel Carboni’s new flattening tool for deep-sky images.
This plug-in makes flattening even the most difficult image data a doddle (even I can get good results).
If you carry out deep-sky image processing, then you must have this tool in your digital darkroom toolbox – it’s sharp!
Is a stereo view of asteroid JO25 2014.
Thank you Jim at EPOD for continuing to publish my work and Dr. Brian May for creating the stereograph.
As well as capturing asteroid JO25 2014 on the single Sky 90/M26C – I also managed to grab 16 subs on the two 200mm lenses with the Trius M26Cs.
Sub number 12 (counting down from the top) is missing as I had cloud over the region during that 5-minutes.
As I couldn’t properly process this data myself, I sent it over to Noel Carboni in Florida USA who did the most superb job as you can see below. Thank you Noel!!