Original URL: http://www.theregister.co.uk/2014/04/25/lohan_dbcam_test/

LOHAN spaceplane's budget minicam punches well above its weight

Pleasant imaging surprise from 'Punch' test flight

By Lester Haines

Posted in SPB, 25th April 2014 07:56 GMT

Pics + vids Watch Video

They say good things come in small packages, and that's certainly true of the impressively titled "DBcam Hi-Resolution Micro Action Sports Video Camera", which soared heavenwards for a quick test during the recent Low Orbit Helium Assisted Navigator (LOHAN) "Punch and Judy" test flights.

It was the first time we'd had the chance to get this miniature member of our mighty imaging arsenal aloft, and to be honest, we weren't expecting much from the 40 quid camera:

The DBcam Hi-Resolution Micro Action Sports Video Camera

The claimed battery life of the DBcam is 2.5hrs in recording mode. We suspected that might be more like 20 minutes, especially when the cold set in. Here's the mounting position atop the Punch payload – a pretty chilly place to be in the stratosphere:

The DBcam mount and case on top of the Punch payload box

However, as the above vid shows, the camera battled gamely on for about an hour, before apparently giving up the ghost. It hadn't, however, and came back to life when the payload was on the ground, recording another 40 minutes or so of close-up grass, while we rushed to the landing location.

This was probably due to our rather uncharitable attitude to the camera. In the complete expectation of failure, we stuck in a really cheapo SD card, and since the camera will periodically save footage to the card (every 60 minutes, according to the instructions), the hiatus may have had something to do with that. Similarly, the occasional jitters in the video suggest an SD card deficiency.

At 640 by 480 pixels, the footage is somewhat below the modern definition of "Hi-Resolution". Here are some stills from the flight showing how it performs (click on the images for full-res versions):

Montage of stills from the DBcam on the test flight

Montage of stills from the DBcam on the Punch test flight

Well, it's hardly Earth-shattering stuff, but the DBcam's surprising battery life under duress has convinced us it'll be ideal for backing up our two GoPros, which will be clamped to the fantastical flying truss, the better to capture rocket-powered spaceplane launches. It weighs a mere 63g in its case, so we may even get another couple to capture the explosive action from multiple angles.

More glorious video action

And speaking of GoPros, the Punch payload also had a downwards-facing HERO 2, so try this interesting video of the mission launch captured simultaneously on both cameras:

Watch Video

Lovely. Our Punch and Judy tests also marked the maiden flight for another untested camera – the Electronics-Depot® HD1080P Sport Action Helmet Camera – seen here on top of the Judy payload:

The Electronics Depot camera mounted atop the Judy payload

The camera was positioned facing upwards to grab the firing of the LOHAN doomsday cut-down, which in the event went completely titsup.

The Electronics-Depot wouldn't have recorded the cut-down going bang even if the system had worked, since it shut down after 40 minutes. While its quality is impressive for the money...

Anthony Stirk seen from the upward-facing Electronics Depot camera on the Judy payload

An upward view at altitude from the Electronics Depot camera

...its inability to handle the cold means it will in future be relegated to ground duties. The big issue with stratocams is how the batteries cope with the temperature. It'd be easy enough to scoff at the Electronics-Depot's lack of the Right Stuff, but we'd like to point out that while the GoPro 2 is tried-and-trusted, we've had issues with the GoPro 3* at altitude, and that cost us an arm and a leg compared with these budget devices. ®

Bootnote

* We've also had issues with charging the camera's battery "BacPac", which is not ideal. So suspicious are we of the GoPro 3 that we're seriously considering ditching it for the mission in favour of another 2-series model.


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