Friday, 22 November 2019

Stacking multiple exposures of the Moon with a Bridge camera

A Panasonic Lumix DMC-FZ72 Bridge camera was fitted with a fairly high speed SD card (32 GB SanDisk Extreme 90/MB/s Class 10, U3, V30).

The camera was set to ISO 100 and was mounted on a static tripod. Lunar images were captured in burst mode (3 images per burst) at 4 different exposures: 60 exposures at 1/1000s, 60 exposures at 1/800s, 114 exposures at 1/640s and 42 exposures at 1/500s. Giving a total of 276 images.

The images were precisely cropped in Astrocrop to centre and register them before stacking.

All of the cropped images were stacked in Autostakkert! 3. The resulting image was wavelet processed in Registax 5.1 and post processed in the Gimp 2.10.

The SD card showed noticeably faster transfer rates when capturing images than with the original class 4 card.

It is intended to repeat the experiment with even faster cards to determine any advantage of using very fast cards when capturing lunar data in this way. The aim is to capture large numbers of images before image rotation becomes an issue.

99.2% Moon


Closer view