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This Mountian Instruments MI-250 GOTO is a excellent mount that I purchased new around July 2005. Works and tracks exceptionally well and has the latest Gemini L/4. I keep this mount set up in my observatory 99.9% of the time and have taken it out only 7 times to star parties. It does have 2 custom rocker bases so mount can be used just about anywhere in the USA
Included with mount:
MI-8P Pier, 36” tall with adjust feet. Will sell mount alone if you don't need the pier as I wouldn't mind keeping it.
Gemini L/4 latest version, includes tool to update Eprom.
Illuminated Polar Alignment scope, which is perfectly aligned.
Standard 12” saddle plate.
Standard weight bar with 2 ea 22lb weights.
2 rocker bases which allow this mount to be used ANYWHERE in the US. (23* to 43*)
2 extra sets of Gemini cables with right angle connectors.
1 extra brand new Gemini motor as spare
Base plate has been drilled and tapped to fit on a Meade tripod.
I have used Pempro with this mount and have recorded 5+/- arcsec peak to peak periodic errors even under my poor seeing conditions. After training it easily will drop to 2-3 arcsecs peak to peak unguided. But I have found that the errors are so smooth anyways that it guides perfectly fine either with or without PEC on. I seldom us PEC as a result.
When I set up, I only need to use the illuminated polar scope for alignment, and it then guides beautifully the rest of the night. I use either an STV or SX guide head with a 60mm guide scope. With short focal length scopes I do not even guide.
These are very fine mounts, and can handle upwards of 70 lbs of equipment. The Gears and Worms are Diamond Lapped which gives these mounts such low PE. All the specs can be seen at the Mountain Instruments website, and Larry will be able to tell you everything about the mounts, including mine. He did upgrade my worm blocks to the newest style with bearing adjusters when he made me the custom rocker bases. Larry has earned a legendary reputation as about the best customer service in the business and will go above and beyond to keep his customers happy.
I have all the original packaging and it can ship UPS without a problem, however local pickup is always fine and I can demo it as well. I am in central Kentucky near Lexington, and don't mind driving a resonable distance for delivery or to meet you part way.
Why am I selling? I hope I am doing the right thing, but I want a larger capacity mount as I plan to upgrade in the near future to a larger RC type scope. Then I plan on getting a smaller field use mount with Gemini, for only short focal length imaging. If this does not sell I will keep it as my portable mount but it is a bit overkill for a FS60C.
This mount new sells for about $8340 with the pier and polar scope, the other extras are worth about $300. My price is over $2000 less than new, and this mount is every bit as good as new. I will seperate the pier if you don't need it as well. I would listen to resonable offers as my new mount arrives in 3 weeks. Paypal ok if fees paid.
Some of my images can be seen at my DogHouseAstronomy website, the majority of them were taken with this mount with either a C9.25, Epsilon 160, or FS60C and SXV-H9 camera.
The M76 Little Dumbell was imaged at 1.12 arc sec image scale, C9.25 @ f/5 1125mm Full resolution but cropped.
The M27 Dumbell was images at 2.5 arc sec image scale using Epsilon 160, full resolution but cropped.
Both images guided with STV and show very round stars, and stacks of 4 minute individual exposures.
Buyer pays shipping to Cont. US only.
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