A-P 130GT 8" EDGE HD AVX AP Wood Tripod
Quote:The AC adapter will actually eminate more heat than the battery - the difference is that the heat is not being emitted inside the camera, so the sensor is not affected by it.For any astronomical purpose, I'd be trying to minimize the additional heat recorded by the sensor.Grant
Quote:Is this for all exposure times ie long, short, HD Movie mode etc?
Astrophoto: Intes Micro ALTER-M606 (6" f/6 MCT), Astrotech AT6RC (6" f/9 RC), 2x Tair-3 lenses (300mm f/4.5)
Visual: Celestron 8 SCT ('77 Orange Tube, 8" f/10), Selsi #247 Refractor (aka Towa #339, 80mm f/15), Tasco 11TE-5 Newtonian (4.5" f/7.9), Galileoscope (50mm f/10)
Mounts: Celestron CI-700, iOptron ZEQ25GT, Celestron CG5-ASGT, plus a couple old EQ2s
My Astrophotography Site: http://ap.x-wing.ca/
ATM 13.1" reflector Sky Watcher BK 120 ED Orion 80 ED HEQ5 Pro and EQ6 Pro Modded Rebel XT and T3i unmodded KWIQ Guider http://www.pierresplace.ca
Quote:To elaborate a bit on what Grant said in case you have not seen one of these AC adaptors yourself - the AC adaptor's power brick is outside the camera (on the other end of a 5ft cable in fact). That is why the head produced by the AC to DC circuitry does not effect the camera at all even though technically it ges warmer then a battery under load does.
Quote:The ac adaptor goes like this:AC outlet -> Wire -> AC/DC power brick -> wire -> battery "blank" -> cameraThe battery blank is simply a connection that happens to be shaped like a battery, no active circuitry of any sort. All the power conversion goes on in the "AC/DC brick".You can see all this (with cables coiled up) on this page: amazon.com link
Quote:Well.... there is a way to save money. There are some cheap clones of the Canon AC/DC adaptor, and they naturally come with a battery blank.Now I own both a cheap clone and a canon official part and I have to say the quality on my clone is so low that I would not buy another..... I have already had to take it apart and re-solder the DC cable to the board. Still, they ARE inexpensive! A quick amazon search for "t2i ac adapter" showed the first result as $16.90. Just keep in mind you do get what you pay for
Scopes: Meade SN6, 10" Dob, Meade LS6, 5" reflector, 8" reflector, 102GT
Mounts: LXD75 and LXD55
Camera: SBIG 8300M, Baader 7nm Ha, OIII, SII, LRGB
Quote:I've been thinking to deliver only QUALITY 12V to the scope from the pier on 12 AWG ultraflex cables, and then put nice well filtered tiny homebuilt DC linear power supply(ies) out there that put out the Canon voltage, the USB hub voltage, the dew heater voltage. I could buy the T2i cheap power supply just to get the battery blank and feed it some stepped down DC.
Quote:Wouldn't a battery grip also reduce noise since the batteries would then not be next to the sensor?
Photo: Qhy9 mono + qhy 5x2" filter wheel and Baader 2" LRGB, Ha, O3 and S2 filters , Meade DSI Pro 2 as guider, TS 9mm off-axis guider Binoculars: Nikon Action 12x50 Telescopes: Skywatcher Evostar 120ED f7.5 APO + TS 2" flattener Mounts: HEQ5 Pro Eyepieces: Nagler 11mm type6, Pentax XW 7mm, Televue 2X barlow 1.25"