I have for sale a great condition iOptron Skytracker 3302W tracking mount. I recently sent it to iOptron to be serviced to make sure it was proper and then used it to ensure it was still doing what it was supposed to do 2 nights ago (7/6/16) to be able to show an example of what it does. It will have the polar scope with intact reticle, it's padded carrying pouch, battery door, all bolts & knobs present, working and in good shape, nothing striped or loose. Compass and LED all proper and working. Overall shape of the unit is very good condition. This is the latest version that can handle 7.7lb pay loads (this gives you plenty of room for a good sturdy ballhead, your dSLR and lenses like 200mm without breaking a sweat). With good alignment, I get 4 minute exposures with a 35mm on APS-C and can get 90 second exposures on 180mm on APS-C. You can probably do better, with better alignment. This installs directly on to the top of your tripod, then attach the ballhead to the unit's surface. The mount on the unit has a reversible threaded bolt for 1/4th inch & 3/8th inch so that you can install standard mounts or straight to camera (suggest you install a ballhead!). This mount sells $299 new on Amazon, $250 used commonly. Check below for my price!
I am the original owner, bought off Amazon in Feb of 2014.
iOptron service is top notch, even out of warranty they service units without question for just the shipping fee. I recently sent it in to be serviced and checked up and it only cost me $15, no labor fee. Great customer support team if you care about that.
To use it and set it up is simple (assuming Norther hemisphere location in the USA):
1. Face it approximately North via the compass on top of the unit while the unit is set at zero degrees latitude.
2. Adjust latitude to your location with the front adjustment knob (example, 28 degrees for my location in Florida).
3. Look through polar finder scope and you should see Polaris some where in the field of view.
4. Adjust unit left/right and latitude until Polaris is in the reticle's map (power the unit on to get red LED illumination of reticle).
5. Put on your ballhead. I remove the polar scope at this stage so that it doesn't restrict any movement of a big camera & lens on a ballhead, just in case.
6. Attach your camera and face it to the object you want to image.
7. Do your imaging.
Note, I recommend you use an external battery source. This unit can run for several hours on four AA batteries and I used to do that, but it is annoying to get into the battery cubby on the back and to install them and put the battery holder back into the mount and close the door. I instead moved to using a Talentcell 6 aH battery set that lasts for days and days of imaging for only $30, it has a 12V output with a charge indicator so you know how much power you have, and you simply use a male 2.1 to male 2.1 DC cable. You don't have to do this. You can just put batteries in it yourself of course. I simply recommend this after having done it a long time, that it's just so much easier to deal with and I never sweat changing batteries or wondering how much juice is left.
Here is my original thread reviewing and showing how it works with other people also using it and showing their images:
Item for Sale: iOptron Skytracker 3302W (White), Latest version that can take 7.7lb.
Approximate age of item: 2 years. I'm the original owner and bought from Amazon.
Item Condition: 9/10 condition cosmetically and 10/10 working condition.
Sale Includes: iOptron Skytracker 3302W, Polar Finder Scope, All knobs/screws/bolts/doors, Carrying Pouch
Price: $220 shipped & paypaled to continental 48 United States.
Payments Accepted: Payapl
Shipping Available To: Continental 48 United States.
Item location: Florida
Best Contact Method: This thread or PM
Feedback: I'm in the feedback thread, search me up if you want to check, I buy/sell often and I'm a regular member here.
Reason for selling: This was my venture into long exposure night photography of the heavens, and it really appeals to me, so I went deeper and got an Orion Sirius tracker. While I would love to keep both, I only need one tracker, and the funds will go towards a CCD camera.
And here's images of the unit being used and how it looks installed and an image I made with it on July 7th 2016 to ensure it's precision and image making abilities:
IMAGE LINK: https://flic.kr/p/HUsH18 20160705_224831 by Martin Wise, on Flickr
35mm, F2.8, on APS-C for 60 seconds:
IMAGE LINK: https://flic.kr/p/JL7D9P MilkyWayAntares762016 by Martin Wise, on Flickr