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Phil dyer pd colour camera

shirva

By shirva
in EEVA - Reports

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Laurie61

Laurie61

Posted
Posted

The power supply that came with the camera is 12v +/ - 10% so 10.8v  - 13.2v is possible. I would not think the extra 0.8v would cause a problem. The experience I have had with rechargeable aaa battery's, for a digital camera, is they all tend to perform slightly differently and hold a slightly different full charge, if you put a meter on 10 1.2v rechargeable  battery's operating in series I wouldn't think you'd get 14v ? Maybe, if this was the case, you could try not fully charging the battery if the voltage was too far out of the safe range?

I know you don't want to carry a large heavy 12v battery but a small, sealed,  battery might not be to much to carry?

http://www.hardwarexpress.co.uk/np7-12-yuasa-12v-7ah-sealed-lead-acid-battery-722-p.asp?gclid=COD6npXm-rkCFTIQtAodmjcAJw

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Schorhr

Schorhr

Posted
Posted

Yes, I suppose I should just make a pack and mesure the actual voltage (and voltage under load).

I'll just ad a Bulb or something to discharge it before use then...

 

Usualy I would go with such a batery pack, but 3kg more in my backpack is impractical ;-)

I know most here are packing their stuff in a car, and that's fine, but for me, that's no option.

 

Perhaps a small one like http://www.pollin.de/shop/dt/MDY5ODI3OTk-/Stromversorgung/Akkus/Blei_Akkus/Blei_Akkumulator_KUNG_LONG_WP2_2_12_12_V_2_2_Ah.html

but  10 AA-NiMH cells @ 2.3Ah weigh 270g, and even those packs weigh a lot more  ;-)

//EDIT

I wil just go with more AA cells and a LM7812 circuit.

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Schorhr

Schorhr

Posted
Posted

I know the USB specs state 100mA and 500mA for registered devices, but from using a USB soldering Iron I know most boards/laptops don't limmit the current... I think my netbook supplied 1-1,5A on a single port even without those USB-Y-Cables used with many external hard drives;

This could be a solution, of course limiting the recording runtime;;

http://www.hitmeister.de/kamerazubehoer/spannungswandler-5v-usb-auf-12v-fuer-ladegeraet-5101-204271021/

http://www.ebay.com/itm/USB-to-XH2-54-DC-5V-to-12V-Step-Up-Boost-Power-supply-Conversion-Module-Arduino-/281128296063

Another idea would be 4 AA NiMH and one of these

http://www.ebay.de/itm/NEW-DC-DC-Adjustable-Step-up-Power-Converter-Module-Output-5V-35V-MAX-current-3A-/360718000781?pt=LH_DefaultDomain_0&hash=item53fc77e28d

http://www.ebay.de/itm/DC-DC-Step-Up-Step-Down-Wandler-Schaltregler-Converter-Step-Boost-Power-Modul-HE-/400581187298?pt=Schwei%C3%9F_L%C3%B6ttechnik&hash=item5d447fd6e2

Though I have yet to find a review how stable the output voltage is.

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  • 2 weeks later...
Schorhr

Schorhr

Posted
Posted

Sorry for tripple posting, but you may be interested in my camera power solution.

The USB-to-12v adapter seems to work fine with the PD1.

One less battery pack/connection cable neccessary!

Now I just need to make a combined av/power cable to reduce the chaos a bit further.

Probably not relevent for all those who hook up a large 12v car battery anyway, but here's the link;

http://www.ebay.co.uk/itm/Spannungswandler-5V-USB-auf-12V-fur-Ladegerat-5101-Digitalkamera-PKW-Auto-/161090518132?pt=DE_Foto_Camcorder_Ladegeräte_Dockingstationen&hash=item2581be3c74

(I ordered mine at http://www.amazon.de/gp/product/B00BLPBLS8/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1 I am sure there are other sources as well. Keep in mind USB is specified for 5v 0.5A max, 0.1A for unregistered devices, with step up to 270mA max it will exceed this, but most board manufacturers alow 1A or more, thus allowing gadgets such as USB soldering irons ;-) Use at your own risk though.)

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Schorhr

Schorhr

Posted
Posted

Hello Davy,

I thought I'd either use a 12v 7.2Ah Pb Pack (10gbp)

http://www.pollin.de/shop/dt/Mjg5ODI3OTk-/Stromversorgung/Akkus/Blei_Akkus/Blei_Akkumulator_YUASA_NP7_12_12_V_7_Ah.html

http://www.pollin.de/shop/dt/OTU5ODI3OTk-/Stromversorgung/Akkus/Blei_Akkus/Blei_Akkumulator_KUNG_LONG_WP7_2_12_12_V_7_2_Ah.html

but a bit on the heavy side,

or some rechargeables-AA-pack with step-up/step-down :-)

Can't find a cheap ebay stepup board that'll handle 12v1A though without cooling...

A bit tight on funds atm :-(

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Nibor

Nibor

Posted
Posted

As far as I know, it's not on the website at all, you will need to contact him.

I only discovered this remote version when I contacted him - it really would be helpful if he placed the details on his website!!

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Macavity

Macavity

Posted
Posted

Just curious, would a video camera work for solar telescopes?

Basically, Yes. But some things you might consider: ;)

Typically a B&W (high sensitivity) video camera MAY have bigger (8.5 micron) pixels

than a dedicated planetary [lunar / solar] camera... (6 Microns)... or maybe less?

Clearly for H-Alpha, colour cams would be unnecessary. You colourise images after?

For White Light Solar, you may find the camera a bit overly sensitive! But this is easily

remedied with a neutral density filter. I bought a Baader ND2 (1% transmission) for this.

(?Not be needed for H-Alpha. IIRC my Watec Cam coped OK with my erswhile PST!). :o

Bear in mind the chip is smallish 1/2" or 1/3" - In real terms diagonally 8mm & 6mm resp.

Field equivalent to a Plossl e.p. of about the same focal length in your solar scope.

Perhaps not the FIRST choice for the dedicated solar imager. But more than possible

to use, for a more general imager - Perhaps a little extra thought needed at times?  ;)

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Dragon Man

Dragon Man

Posted
Posted

Just curious, would a video camera work for solar telescopes?

Yes Perry.

Rock Mallin in Canada often broadcasts the Sun on Night Skies Network through his Solar telescopes.

He uses the Sun and solar scopes when testing new models of his cameras.

Plenty of Solar Videos here from jack Huerkamp with dedicated AstroVideo cameras and a Lunt 80 Solar scope.

http://www.youtube.com/watch?v=H_gCuCypaaE

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Dragon Man

Dragon Man

Posted
Posted

and here with a Coronado Solarmax 40 solar scope: http://www.youtube.com/watch?v=rLqqdwaHdz8 and here: http://www.youtube.com/watch?v=QDg_uWKO7-U

here with a QHY camera in a Solarmax: http://www.youtube.com/watch?v=E3YQLcU5f2I

a Samsung SCB-2000 and white light filter: http://www.youtube.com/watch?v=Ne0u4e3i5-U

So I believe it would be safe to assume that a PD camera will do fine.  :smiley:

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