Posted 14 April 2013 - 08:53 AM
Posted 14 April 2013 - 09:20 AM
Posted 14 April 2013 - 10:40 AM
I bought the fan kit from Orion. My 10 inch and my XX14i and my previous XX12i were all set up for them. There kit I think is around $25.00. Look on there web site. I think they are under dew control section. All the mounting hardware comes with it.
Interesting. It says that it fits the XT12g truss tube, but mine is the solid tube. I wonder if it would still work?
Posted 14 April 2013 - 11:02 AM
Posted 14 April 2013 - 11:39 AM
I have an Orion XT12g and want to put a cooling fan on it. For you Orion guys out there that have done this, what fan did you buy and how did you mount it?
There is a whole thread dedicated fan, cooling, etc. A lot of options to consider in terms of how to mount, which direction for airflow, whether or not to just use a bottom mounted fan, or to add sidemounted (which would typically require modifications to the tube), how to power the fan(s), etc.
Recently, I added a fan to my XT8i that, for now, is suiting my needs. Later, I'll mod the setup a bit, to enclose the back of the scope/fan to encourage more/better directed airflow. In the meantime, I'm using a standard 'good quality' 80mm computer fan, which is the size the back of my XT8i is pre-enabled for (holes to mount match this fan size/design).
I mounted with Velcro, primarily for quick and easy on/off and, possibly to help prevent possible vibrations. I had considered using some rubber/silicone standoffs I have for mounting fans, which certainly help isolate vibrations, but they're not always the easiest to pop in/out. Velcro has worked perfectly, I'm happy to report.
I also am currently running my fan off of an AC power source. I initially went with AC power (converted to DC with a transformer/wallplug adapter) since I'm mainly viewing around my home's general vicinity, and I have a number of outdoor outlets and outdoor extension cords to make this a cinch. I had a collection of surplus, compatible transformers kicking around (convert AC to 12VDC), so it was a simple matter to snip the power lead off the transformer and marry it to a standard fan header (3 pin female) from one of my many space computer parts I have on-hand (clipped from an older system's power supply that had a fan power lead on it).
At any rate, I can run my fan from the power plug, delivering 12VDC from an available AC outlet. When I'm ready to be more mobile (dark sky visits this spring/summer/fall), I can consider switching over to a DC power source like a battery pack, etc.
Here's a link to some snapshots I took for another thread where I answered a request to post some pics:
Click on the imageshack link to see the pics with some captions for additional context. Was super easy and quick, and so far a very nice improvement from pre-fan performance, both in terms of initial cooling, and continued cooling during viewing. I can see results in the eyepiece, and no vibrations induced at the currently highest mags I've looked at (358x).
Hope this helps, and gets you thinking about the possibilities. There are some ready-made kits, and you can opt for a myriad of do-it-yourself approaches. I'm not done, as I will add the shroud/enclosure soon... and may eventually add some side-mounted 'boundary layer' fan solution. Again, in the meantime, this was a decent, cheap, quick and easy 'upgrade' from no-fan to a basic fan install.
Posted 14 April 2013 - 12:35 PM
Posted 14 April 2013 - 08:59 PM
Posted 01 May 2013 - 01:55 PM