Ballooning at Yahoo! Groups

Re: GPS without altitude limit

wb8elk@... — Sat, 07 Nov 2009 23:31:25 GMT

The Inventek GPS module ISM300-F2 has a special high altitude build that allows it to work up to 137,000 feet. It's a SiRF III chipset....not sure if any other

Re: GPS without altitude limit

jjdemeyer — Sat, 07 Nov 2009 17:21:13 GMT

I have been using the Trimble Lassen iQ. It will report altitude above 60,000 ft if the speed is below 1100 mi/hr. Many GPS units can report one or the other

GPS without altitude limit

jerrygable — Sat, 07 Nov 2009 17:11:23 GMT

All of the specs for GPS modules that use the Sirf iii chipset say they are limited to 60K feet. I know that some modules do this because of the altitude +

Re: Cameras with moving lenses

Bob Dengler — Wed, 04 Nov 2009 15:43:33 GMT

... Given how cheap the older Powershots are, it's almost a non-issue. I found an A710 at the local ham swap meet for $5. Lens & CCD were fine, no shutter

Re: Cameras with moving lenses

n9xtn — Wed, 04 Nov 2009 14:00:17 GMT

We have had both mud and moisture in our Canon A560. One flight landed face down in the mud with the lens out. I carefully cleaned everything up before the

Re: Cameras with moving lenses

Pete Lilja — Wed, 04 Nov 2009 12:31:28 GMT

Perhaps I should take a look inside my camera to see the debris. Your point is well taken. I can't speak to Colorado soil nor can I say much (but some) about

Re: Cameras with moving lenses

Mike Manes — Wed, 04 Nov 2009 04:16:57 GMT

Hi Pete, Well, I did find it necessary to open up our A570 after its 1st flight in SamCam I which didn't have a glazed window, and was alarmed to find how much

Re: Cameras with moving lenses

wb8elk@... — Tue, 03 Nov 2009 19:48:35 GMT

I also don't use any window cover...just expose the lens to the outside. The only problem I see is during descent on a hot and humid day...particularly if

Re: Cameras with moving lenses

wb8elk@... — Tue, 03 Nov 2009 18:05:53 GMT

Bruce, The very first film camera that I sent into Near Space in 1988 had a lens that popped out when taking a photo....it never froze up after flying a dozen

Re: Cameras with moving lenses

Idle-Tyme — Tue, 03 Nov 2009 14:44:46 GMT

Same here, Ours has been only on a few flights so far. like 4 or 5. but never ever have had a problem with that dirt. But what we have had problems with is

Re: Cameras with moving lenses

Pete Lilja — Tue, 03 Nov 2009 12:33:14 GMT

Mike, While I've read a bit about dust in the lens being a problem I wonder if it isn't overstated. I had an A570 sit in a northern Illinois farm field for

Re: Cameras with moving lenses

Mike Manes — Tue, 03 Nov 2009 02:35:06 GMT

Hi Bruce, Brrr ... it's been a while since we've "below zero" F (< -16C) here in the Denver area - but with last week's > 60 cm of s#$w now melting off, we may

Re: Cameras with moving lenses

Bruce Coates — Mon, 02 Nov 2009 23:13:12 GMT

Thanks Mike No need of a freezer around here. In a few weeks it will this cold and colder right in the back yard. ;-) Do you ever encounter frosting on the

Re: Cameras with moving lenses

Mike Manes — Sun, 01 Nov 2009 00:17:21 GMT

Hi Bruce, The EOSS SamCam uses a Canon A570 with retractable zoom lens, and we do have a minimum of 1 cm of closed cell foam insulation surrounding the body,

Re: Cameras with moving lenses

jjdemeyer — Sun, 01 Nov 2009 00:06:39 GMT

I have been using an HP M437. It has a moving lens as you describe. I have my eye on the Canon A470. As someone else mentioned, the scripting will provide