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  #21  
Old 09-06-2013, 09:13 PM
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RickS (Rick)
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Quote:
Originally Posted by RobF View Post
They're reasonably voltage fussy I thought Rick? Hard to see how it could hurt to try - I'd be very interested to hear how you go. Getting flats >3 secs is still the bane of my life with the QHY9.
Rob,

You can reduce the voltage and get some dimming with my EL panel but if you go too far it starts to flicker very visibly. The PWM dimmers should maintain the full voltage but reduce the duty cycle. I didn't find any definitive info but it seems like PWM dimming does work with some panels.

Will let you know when the dimmers finally arrive.

Cheers,
Rick.
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  #22  
Old 09-06-2013, 09:21 PM
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Quote:
Originally Posted by Tandum View Post
Careful buying those battery packs. There was a notice on overclockers last week about fakes coming from china.

http://www.overclockers.com.au/news.php?id=1087397
LOL. Wonder if you could smoke the "sand"
Could be hard to explain to customs if you bought a few
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  #23  
Old 09-06-2013, 10:27 PM
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Those eBay dimmers work well for controlling heater strips (I have the more upmarket $13 version ), but they may not be suitable around imaging rigs. They dirty up the power send out a "pilot tone" around 400Hz across most of the adjustment range. When I ran a heater strip through it connected to a Celestron Powertank, the Powertank's built-in FM radio just played that tone

Cheers
Steffen.
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  #24  
Old 10-06-2013, 10:57 AM
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Thanks Phil for starting this thread and all the others input. The heavey battery to power my nightscape rig has been a problem for a while. Just ordered one of the $13 dimmers that is in Australia with free postage.
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