Tuesday 14 May 2019

AstroDMx Capture for MacOS, bad seeing and large frame-counts

When the seeing is bad the atmosphere bubbles and the image distorts, coming in and out of focus. However, if you look carefully, there are brief moments of clarity. If a very large number of frames are captured and all but a small percentage of the best quality frames are discarded, it is possible that when the remaining frames are stacked, a worthwhile image will be obtained.
A QHY 5L-ll-M camera fitted with a x2.5 Barlow, was placed at the Cassegrain focus of a Skymax 127 Maksutov, which was mounted on a Celestron AVX EQ, GOTO mount.
AstroDMx Capture for MacOS was used to capture a 20,000 frame SER file of Crater Clavius (70.7% waxing Moon), with a region of interest of 800 x 600; and the following night, a 30,000 frame SER file of Clavius (80.7% waxing Moon) was captured.
The best 5% of frames of the 20,000 frame SER file were stacked in Autostakkert!3 running in Wine, wavelet processed in Registax 5.1 also running in Wine and post processed in the Gimp 2.10. The best 4% of the 30,000 frame SER file were similarly processed.

Screenshot of AstroDMx Capture for MacOS capturing the 20,000 frame SER file of Clavius




Crater Clavius, stack of the best 1000 of 20,000 frames



The following night. Stack of the best 1200 frames of 30,000 frames


Screenshot of AstroDMx Capture for MacOS capturing the 30,000 frame SER file of Clavius


       6 pane mosaic of the terminator of the 89% waxing Moon
Best 10% of 10,000 frame SER files



Monday 13 May 2019

AstroDMx Capture for MacOS and a 3-pane High resolution lunar mosaic

A QHY 5L-ll-M camera was fitted in a x2.5 Barlow and placed at the Cassegrain focus of a Skymax 127 Maksutov. AstroDMx Capture for MacOS was used to capture three 10,000-frame SER files of overlaping regions of the 59.7% waxing Moon.

Screenshots of AstroDMx Capture for MacOS



Screenshot of AstroDMx Capture for MacOS maximised, and showing the reticle


3-pane mosaic of Montes Alpes, Vallis Alpes, Montes Caucasus, Aristoteles, Eudoxus, Cassini, Aristillus, Autolycus, Archimedes, Montes Apenninus.





Ptolomaeus, Alphonsus & Arzachel.


Sunday 12 May 2019

High resolution Lunar image with AstroDMx Capture for MacOS

A QHY 5L-ll-M camera was placed at the Cassegrain focus of a Skymax 127 Maksutov. Nineteen overlapping panes of 1000-frame SER files at a resolution of 1280 x 960 were captured of the 48%, waxing, crescent Moon using a MacBook Air running AstroDMx Capture for MacOS.

Screenshot of AstroDMx Capture for MacOS


The best 90% of frames in each of the 19 SER files were stacked in Autostakkert!3 running in Wine.
The resulting images were stitched using Panorama Stitcher and the final mosaic was wavelet processed in Registax 5.1 running in Wine.


Closer view


AstroDMx Capture for MacOS now has most of the functionality of the Linux version. It will be thoroughly tested before release after all of the functionality is implemented.





Thursday 2 May 2019

The Black Eye Galaxy with a tethered DSLR and AstroDMx Capture for MacOS

A Canon EOS 4000D DSLR camera was placed at the Newtonian focus of a Skywatcher Explorer 130 PDS 130mm, f/5 Newtonian.

A MacBook running High Sierra and Nicola's AstroDMx Capture for MacOS was used to capture 18 x 60s exposures and 5 matching dark-frames as 16 bit Tiff files of M64, the Black Eye Galaxy from the tethered DSLR..

The best 17 frames were stacked in Deep Sky Stacker, Sequator and Autostakkert. The resulting images were processed in the Gimp, and Neat Image and then re-combined in Picture Window Pro at different image scales.





Tethering of DSLR cameras whose manufacturers support it will be a valuable feature in AstroDMx Capture for Linux and MacOS