So what are my options for a TV85
Posted 31 August 2013 - 01:24 PM
In the Alt/AZ - its pretty much a Nexstar 6/8 mount or Ioptron mini tower, I'm not sure how much a cube pro can truly handle.
EQ - I think there are more available, but tracking can add weight and more bucks. Plus possible awkward viewing.
Posted 31 August 2013 - 08:59 PM
Off the top of my head, A Manfrotto 3046 legs and 410 head, you should be able to pick these up for around $200 to 250.
Posted 31 August 2013 - 10:10 PM
Posted 02 September 2013 - 09:02 AM
I was looking at a Teegul and read an article on a guy who made a small wedge that converted it to a mini eq and allowed one knob tracking.
Posted 02 September 2013 - 02:04 PM
Posted 02 September 2013 - 05:23 PM
Posted 02 September 2013 - 06:24 PM
Let's also assume that one is using an eyepiece with an apparent field of view of 72 degrees -- which is not exceptionally wide by today's standards. So, the true FOV is about .55 degree. Let's also assume that for best definition one chooses to keep the object within the middle half of the field. For a moderately long focal ratio scope like a TV85, good eyepiece designs will certainly yield good definition over the middle half of the field. So -- let's say the "usable field" is restricted to .27 degree.
Doing some arithmetic, one sees that the "worst-case" need for a nudge would be about every 65 seconds -- which might also be about the smallest consistently controllable nudge that one could casually perform (without very deliberate concentration) given the relative short lever-arm provided by a TV-85.
Posted 02 September 2013 - 09:01 PM
I have a NexStar 8 SE and had a TV 85 and the TV 85 is too long for the NexStar SE mount. Unless you are okay with not being able to come to zenith. And I mean seriously not coming to zenith. I had a TV TelePod Alt Az mount and it was nice enough. But knowing what I know at this point I would put a TV 85 on a Vixen Porta II ( Star Guy version with HAL 130 tripod preferred) for manual or on a iOptron Mini Tower pro if you want goto.
Thank you for the info on the nexstar. With my craptacular horizons, zenith is where I most likely will be at. Looks like the minitower for goto and tracking or a eq mount. I will have to mull the nudge and look.
Posted 03 September 2013 - 04:45 AM
The Porta II suggested above might work well. I'd look hard at the upcoming Mini Hitch II for a higher-end alternative.
Whatever you do, get that TV85 back under the stars!
Posted 03 September 2013 - 08:28 AM
Posted 03 September 2013 - 09:02 AM
Posted 03 September 2013 - 09:55 AM
Posted 03 September 2013 - 09:55 AM
Have you seen the Nova Hitch? There is a smaller version coming out with many of the same features(Mini Hitch II), also a simpler model too. Do a web search for Half Hitch Telescope mount
I have and the price is a little steep
Posted 03 September 2013 - 10:12 AM
The NexStar 6/8 SE mount does not have a built in ability to set it up in EQ mode. ie, no tilting plate. Some of the smaller NexStar scopes do.
I believe there is/was an optional wedge(no longer produced?) No idea on how well it performs
Posted 03 September 2013 - 10:23 AM
Posted 03 September 2013 - 11:44 AM
Posted 03 September 2013 - 12:42 PM
Huh- the last one I looked at did. I know they have a mini-wedge for it.
There are some out there, it is now a discontinued product.
Posted 03 September 2013 - 01:01 PM
The beauty of the Porta II is it will perform well with your TV 85 and it is not expensive. No matter how serious you get with the hobby The Porta will fit in. Like my usage of my Porta with a PST. I would suggest that you go a low cost route like the Porta, get out under the stars and enjoy your TV 85. Who knows where using the 85 will lead you. So save the serious outlay of cash for when you really know where you want to go with this hobby.
What he said!
I might add that if you want a bit of extra stability for your Porta II, get the eyepiece tray from Agena Astro. It adds a *lot* of extra rigidity to the mount, not to mention room for a ton of eyepieces, at the expense of needing more time to collapse the mount for storage (as it now attaches with four metal screws rather than a single plastic one). In most grab-n-go situations this will not be a serious problem.
Posted 03 September 2013 - 07:54 PM
Posted 04 September 2013 - 09:50 AM
Posted 04 September 2013 - 07:04 PM
Posted 04 September 2013 - 10:51 PM
That Quarter Hitch on CN classifieds is a nice price.
Not real familiar with these mounts, I assume same creator does Half Hitch and Nova Hitch? The QH does not have slo mo controls correct?
Posted 05 September 2013 - 05:20 AM
Posted 05 September 2013 - 10:07 AM
Posted 05 September 2013 - 11:53 AM