Re: [Utah-astronomy] Winter Star Party at Great Basin National Park
Joe, There is no a convenient electrical outlet to use. However, I have a couple deep cycle batteries you could use - all you would need to bring is a inverter. Just let me know and I'll get them charged. Kelly Kelly Carroll Great Basin National Park http://www.nps.gov/grba/ Experience your America Hi Kelly, Is there an electrical connection where the star party will be held? Thanks, Joe
Hi Kelly, Thanks! I have a generator but it would be annoying to anyone else at a star party. Do you think the batteries could power my laptop all night? I have other batteries that I use for other needs, but it's the laptop that's an electrical hog. I think I have an inverter too, but if not I could buy one. Best wishes, Joe --- On Sun, 2/27/11, Kelly_Carroll@nps.gov <Kelly_Carroll@nps.gov> wrote:
From: Kelly_Carroll@nps.gov <Kelly_Carroll@nps.gov> Subject: Re: [Utah-astronomy] Winter Star Party at Great Basin National Park To: utah-astronomy@mailman.xmission.com Date: Sunday, February 27, 2011, 9:15 AM Joe,
There is no a convenient electrical outlet to use. However, I have a couple deep cycle batteries you could use - all you would need to bring is a inverter.
Just let me know and I'll get them charged.
Kelly
Kelly Carroll Great Basin National Park http://www.nps.gov/grba/ Experience your America
Hi Kelly, Is there an electrical connection where the star party will be held? Thanks, Joe
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com
Joe, as you know, the power consumption of your laptop should be labeled somewhere as should the specs on your battery and it is a simple calculation to determine for how long any given battery will keep you going. When I experimented with a laptop/telescope interface I found that for my needs, at least, the jump-start-type battery that I own was sufficient for a full night's use. The computer backup-type batteries that I had, however, were undersized. Let me know what kind of numbers you get when you do the calculations. (Just curious.) Kim -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Sunday, February 27, 2011 11:59 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] Winter Star Party at Great Basin National Park Hi Kelly, Thanks! I have a generator but it would be annoying to anyone else at a star party. Do you think the batteries could power my laptop all night? I have other batteries that I use for other needs, but it's the laptop that's an electrical hog. I think I have an inverter too, but if not I could buy one. Best wishes, Joe --- On Sun, 2/27/11, Kelly_Carroll@nps.gov <Kelly_Carroll@nps.gov> wrote:
From: Kelly_Carroll@nps.gov <Kelly_Carroll@nps.gov> Subject: Re: [Utah-astronomy] Winter Star Party at Great Basin National Park To: utah-astronomy@mailman.xmission.com Date: Sunday, February 27, 2011, 9:15 AM Joe,
There is no a convenient electrical outlet to use. However, I have a couple deep cycle batteries you could use - all you would need to bring is a inverter.
Just let me know and I'll get them charged.
Kelly
Kelly Carroll Great Basin National Park http://www.nps.gov/grba/ Experience your America
Hi Kelly, Is there an electrical connection where the star party will be held? Thanks, Joe
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com ----- No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1204 / Virus Database: 1435/3471 - Release Date: 02/27/11
Thanks, Kim. I have two functioning laptops and will see which uses less power. I'm do the calculations and let you know. -- Joe --- On Sun, 2/27/11, Kim Hyatt <kimharch@cut.net> wrote:
From: Kim Hyatt <kimharch@cut.net> Subject: Re: [Utah-astronomy] Winter Star Party at Great Basin National Park To: "'Utah Astronomy'" <utah-astronomy@mailman.xmission.com> Date: Sunday, February 27, 2011, 12:12 PM Joe, as you know, the power consumption of your laptop should be labeled somewhere as should the specs on your battery and it is a simple calculation to determine for how long any given battery will keep you going. When I experimented with a laptop/telescope interface I found that for my needs, at least, the jump-start-type battery that I own was sufficient for a full night's use. The computer backup-type batteries that I had, however, were undersized. Let me know what kind of numbers you get when you do the calculations. (Just curious.)
Kim
-----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Sunday, February 27, 2011 11:59 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] Winter Star Party at Great Basin National Park
Hi Kelly, Thanks! I have a generator but it would be annoying to anyone else at a star party. Do you think the batteries could power my laptop all night? I have other batteries that I use for other needs, but it's the laptop that's an electrical hog. I think I have an inverter too, but if not I could buy one. Best wishes, Joe
--- On Sun, 2/27/11, Kelly_Carroll@nps.gov <Kelly_Carroll@nps.gov> wrote:
From: Kelly_Carroll@nps.gov <Kelly_Carroll@nps.gov> Subject: Re: [Utah-astronomy] Winter Star Party at Great Basin National Park To: utah-astronomy@mailman.xmission.com Date: Sunday, February 27, 2011, 9:15 AM Joe,
There is no a convenient electrical outlet to use. However, I have a couple deep cycle batteries you could use - all you would need to bring is a inverter.
Just let me know and I'll get them charged.
Kelly
Kelly Carroll Great Basin National Park http://www.nps.gov/grba/ Experience your America
Hi Kelly, Is there an electrical connection where the star party will be held? Thanks, Joe
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----- No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1204 / Virus Database: 1435/3471 - Release Date: 02/27/11
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Note that batteries' performance goes down considerably with temperature. And as their charge is used their output voltage drops, which is a problem for some things but I don't know if or how this affects use via an inverter. It seems odd to take a 12V DC battery, invert it to 120V AC, and then convert it down to 19V DC (or whatever your laptop requires); it seems there ought to be a more efficient way. -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Joe Bauman Sent: Sunday, February 27, 2011 11:59 AM To: Utah Astronomy Subject: Re: [Utah-astronomy] Winter Star Party at Great Basin National Park Hi Kelly, Thanks! I have a generator but it would be annoying to anyone else at a star party. Do you think the batteries could power my laptop all night? I have other batteries that I use for other needs, but it's the laptop that's an electrical hog. I think I have an inverter too, but if not I could buy one. Best wishes, Joe --- On Sun, 2/27/11, Kelly_Carroll@nps.gov <Kelly_Carroll@nps.gov> wrote:
From: Kelly_Carroll@nps.gov <Kelly_Carroll@nps.gov> Subject: Re: [Utah-astronomy] Winter Star Party at Great Basin National Park To: utah-astronomy@mailman.xmission.com Date: Sunday, February 27, 2011, 9:15 AM Joe,
There is no a convenient electrical outlet to use. However, I have a couple deep cycle batteries you could use - all you would need to bring is a inverter.
Just let me know and I'll get them charged.
Kelly
Kelly Carroll Great Basin National Park http://www.nps.gov/grba/ Experience your America
Hi Kelly, Is there an electrical connection where the star party will be held? Thanks, Joe
participants (4)
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Craig Smith -
Joe Bauman -
Kelly_Carroll＠nps.gov -
Kim Hyatt