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Pages: 1 Denimsky professor emeritus Reged: 01/21/07 Loc: BC, Canada CCD in a freezer       #5437999 - 09/24/12 12:22 PM Edit   Reply   Quote Quick Reply   Hi guys. I took some images of Jellyfish nebula during Merritt Star Quest a couple of weeks ago. The sky was very dark and the images look pretty good but the problem is that I set the CCD's temperature -35C while I'm taking them but I cannot reach that temperature here at my home even at night so I cannot take darks. Stupid me! It was around -5C in Merritt, BC but it is around 12C home at night. I read that people put their CCD in freezers (the frozen part) to take darks but is it safe for my CCD? Does anybody here in CN do that? Thank you! Post Extras:       elbee professor emeritus Reged: 05/02/09 Loc: Arizona Re: CCD in a freezer [Re: Denimsky]       #5438009 - 09/24/12 12:28 PM Edit   Reply   Quote Quick Reply   yes, i do that to take dark and bias frames. just need to put a sign on the freezer door that says "do not open" (so then your kids can say..."dad, i opened the freezer, is that OK?) :-) Post Extras:       JoseBorrero Carpal Tunnel Reged: 09/04/09 Loc: MI Re: CCD in a freezer [Re: Denimsky]       #5438042 - 09/24/12 12:48 PM Attachment (9 downloads) Edit   Reply   Quote Quick Reply   common sense that happens to me too. Post Extras:       Peter in Reno Post Laureate Reged: 07/15/08 Loc: Reno, NV Re: CCD in a freezer [Re: JoseBorrero]       #5438064 - 09/24/12 01:00 PM Edit   Reply   Quote Quick Reply   How do you prevent from CCD window getting condensation when you remove the camera from the freezer? Kevin Nelson from QSI does not recommend to put cameras in a freezer for condensation reasons. Peter Post Extras:       JoseBorrero Carpal Tunnel Reged: 09/04/09 Loc: MI Re: CCD in a freezer [Re: Peter in Reno]       #5438140 - 09/24/12 01:49 PM Edit   Reply   Quote Quick Reply   Mine don't use dissecant Post Extras:       tidroplane Pooh-Bah Reged: 10/02/06 Loc: Everett, Wa. USA Re: CCD in a freezer [Re: JoseBorrero]       #5438481 - 09/24/12 05:18 PM Edit   Reply   Quote Quick Reply   Yep, I put my SBIG CCD in the refrigerator, not the freezer to do dark frames, not a problem at all! Post Extras:       Mike7Mak Pooh-Bah Reged: 12/07/11 Loc: New York Re: CCD in a freezer [Re: Peter in Reno]       #5438484 - 09/24/12 05:20 PM Edit   Reply   Quote Quick Reply   Quote: How do you prevent from CCD window getting condensation when you remove the camera from the freezer? Kevin Nelson from QSI does not recommend to put cameras in a freezer for condensation reasons. Peter Place the camera in a ziplock bag while in the fridge and disconnect the cables and seal up the bag before you take it out. Let it come back to ambient then remove it from the bag. edit...I imagine Nelson is more concerned about condensation on the circuit boards than the window. Edited by Mike7Mak (09/24/12 05:23 PM) Post Extras:       jmasin Carpal Tunnel Reged: 12/22/08 Loc: Murphy, TX (DFW) Re: CCD in a freezer [Re: Mike7Mak]       #5438726 - 09/24/12 08:21 PM Edit   Reply   Quote Quick Reply   Yeah, ziplock works if you can fit the camera in it. I've had trouble with noise/banding when shooting darks in the fridge... It only happened in the fridge, so I concluded it was due to AC noise, but I have zero proof. Edited by jmasin (09/24/12 08:22 PM) Post Extras:       Denimsky professor emeritus Reged: 01/21/07 Loc: BC, Canada Re: CCD in a freezer [Re: jmasin]       #5438978 - 09/24/12 11:30 PM Edit   Reply   Quote Quick Reply   Thank you guys! I will try the zipper lock method. Post Extras:       KDizzle professor emeritus Reged: 09/12/08 Loc: Woodinville, WA Re: CCD in a freezer [Re: Denimsky]       #5439123 - 09/25/12 03:20 AM Edit   Reply   Quote Quick Reply   you can probably guess where those cords are going... Post Extras:       Fabio Papa Carpal Tunnel Reged: 03/01/05 Loc: Piacenza, Italy Re: CCD in a freezer [Re: KDizzle]       #5439138 - 09/25/12 03:55 AM Edit   Reply   Quote Quick Reply   Wow, that notebook keyboard! What brand/model is it? Post Extras:       Mark72 sage Reged: 09/19/12 Loc: Munich, Germany Re: CCD in a freezer [Re: Fabio Papa]       #5439143 - 09/25/12 04:03 AM Edit   Reply   Quote Quick Reply   Quote: Wow, that notebook keyboard! What brand/model is it? I guess it's Alienware. Pretty cool, isn't it? Mark Post Extras:       Fabio Papa Carpal Tunnel Reged: 03/01/05 Loc: Piacenza, Italy Re: CCD in a freezer [Re: Mark72]       #5439411 - 09/25/12 09:51 AM Edit   Reply   Quote Quick Reply   Brief search showed it costs more than a mac book air tough... Post Extras:       KDizzle professor emeritus Reged: 09/12/08 Loc: Woodinville, WA Re: CCD in a freezer [Re: Fabio Papa]       #5439729 - 09/25/12 12:46 PM Edit   Reply   Quote Quick Reply   Lol, yeah it's a pretty old alienware, the M15x. THe ones they sell now are a second generation case that is much more robust. This one is pretty much falling apart. If you look at the lower left side fo the screen you can see. I have some twist-ties holding it together. Works great for running astrogear with the red backlighting and of course it's got the whole space alien theme going. Oh, and it runs about 10 bajillion degrees hot, so it doesn't dew since it just evaporates whenever it touches the thing. Post Extras:       Pages: 1

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