From: Mark Gaffney <markgaffney@mac.com>
Date: December 21, 2008 9:58:55 AM MST
To: Astro_IIDC@yahoogroups.com
Subject: Re: [Astro_IIDC] Flea 2 peltier cooler etc...
Hi Milton, I`ve been looking into that! Where do the wires of the "Rat Tail" then go. I understand it`s to a RS-232 connector is that right? The PGR site recommends B & B electronics part no. 232 PTTL; (http://www.bb-elec.com/)
I thought I recalled you saying something about a firewire connection for this when I asked before?? It`s cloudy here at present but a couple of days ago we were getting 35+ C temperatures. The scope is out under tarps with it`s delicate parts removed (eyepiece-finder etc.) but it`s still not nice to think of it cooking out there! I have to look seriously at some drift aligning myself but have to sort out my N-S-E-W & crosshair orientation whether I use the camera etc. or reticle eyepiece. I `ve had some help from a guy on the Autoguiding group but have also found these directions which sound fairly straightforward; http://www.geologynet.com/astronomy/polar.htm
I probably won`t be set-up before the end of summer here for DSOs. I still have the focal reducer & Easy Guider to purchase & have a backlog of overlimits on my credit card! Good luck with your dark sky imaging during your holidays! Mark.
On 22/12/2008, at 3:23 AM, Milton Aupperle wrote:
Hi Mark;
Glad to hear it's working for you.
Your also going to have to connect up two pins (Pin 0 and Pin 1)on
the "Rat Tail" GPIO connector for the Fleas cameras, and then check
mark the ""Allow extended PGR cameras exposure times. " (see page 61
of the Astro IIDC manual). That's how you can get exposures to 60
minutes with it.
Where I am now, the out door temp is -30°C or lower, so I don't need
any active cooling at all, but I do need an electric blanket on the
back of the LCD of the Laptop or it freezes solid and stops displaying.
TTYL..
Milton Aupperle
On 20-Dec-08, at 11:30 PM, Mark Gaffney wrote:
Hi Milton, Thanks for your help choosing the parts for the peltier
cooler set-up. As you may
have gathered I now have the Flea 2, heatsink/fan & power source &
am awaiting the cooler
itself. I`ve posted a photo to my "set-up C9.25XLT OTA" folder in
photos to give you an idea
of the comparative size of the parts. I`ve also added a new file
with my latest mosaic done
with the Flea 2. Will maybe investigate further processing options
for the images. Interesting
that you were able to synchronise so many different nights' imaging
in your recent Messier
52 image. I`ll hopefully soon be coping with some DSOs myself. Have
a nice Christmas! Mark.
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