Celestron VX mount
Posted 10 January 2013 - 10:51 AM
That's a very nice "clean up" of the CG5-GT.
Posted 10 January 2013 - 11:09 AM
That's a very nice "clean up" of the CG5-GT.
Nice turn of phrase, Jim. I wish I'd said that. Yes, it's clearly an update and adds some missing features plus there may be some performance improvement as well. At $800 it could well be an even better value than the $700 CG-5GT was.
Posted 10 January 2013 - 11:57 AM
Posted 10 January 2013 - 01:53 PM
Posted 10 January 2013 - 03:02 PM
Posted 10 January 2013 - 03:41 PM
The latitude adjustment goes down to slightly less than zero degrees, but I'm not sure if the counterweight will miss the tripod at low latitudes, that may be why it's specified as 7 degrees.
I ended up doing far less playing with/testing the mount than I hoped because of the continuous clouds but found that it was quite easy to set up guiding, just run the PHD guiding calibrate function. I think I did have PEC on.
Posted 10 January 2013 - 04:56 PM
Posted 10 January 2013 - 06:21 PM
Posted 11 January 2013 - 02:29 AM
I think it's slews are quieter than my AS-GT but it's not silent - except when tracking.
It has the reduced rate 9 speed option.
Posted 11 January 2013 - 10:19 AM
Posted 11 January 2013 - 10:30 AM
I scanned through the comments above and can answer a couple of questions I think have gone unanswered. The power connector is beside the thread on "south" polar axis cover. The power connector inserts parallel to the polar axis and it uses a connector with a threaded locking nut. The power cord is probably overly generous in length (I suppose for the benefit of those who power off an outlet in their cars) but it is decently heavy duty. It is the first Celestron supplied power cord that I have felt is worth using. To be fair I have not received one in quite a while and they may have upgraded their cords years ago, I remember the old, useless ones.
I've done a fair bit of testing with a Megrez 110 and a Celestron C6R which is counter weighted to move the eyepiece end a bit farther from the ground and comes in at 30 pounds before I add a diagonal or EP. For visual use it handles both of those loads like they aren't even there. So far I have run it down to 12 F (about -10 C) without any issues other than the expected LCD sluggishness. It points at least as accurately as any Celestron mount I own (Nexstar GPS, CGE, ASGT, CGEM), probably a bit better.
I would not say it is quieter than the original, although as Chris said it does have the reduced rate 9.
I think low latitude users will be happy with it. You will have to remove one of the adjustment screws. I believe if you live below about 5 deg you will have to tip the tripod slightly to get CW clearance. However it does adjust down to zero degrees and if you mount it on a permanent pier of small enough diameter it will be completely at home at the equator. Even at 42 degrees C6R owners like me will find that the focuser end of that OTA will crash into tripod legs during slews near the zenith so constant vigilance is required. Because of that I long ago purchased the 16 inch Orion pier extension for my ASGT. Be warned, although the Orion extension sorta fits the new mount and tripod you will have to remove the AZ adjust lugs and the mount head is not properly supported. So don't go there, you won't be happy. However if someone were to come out with a modified version of that pier extension or even just supply a modified upper mount head interface bracket for it you could have a completely portable setup that works fine at zero degrees and is free from long OTA crashes at any latitude. Just a hint to anyone, Celestron included, who owns a telescope mount accessory business....
Even though I don't image I am preparing to try to measure the PE and PEC. Wish me luck, I'm in way over my head! And like Chris my efforts to do more beta testing have been severely hampered by clouds. I've done enough to give it an enthusiastic thumbs up though!
Posted 11 January 2013 - 10:57 AM
I will never understand why people complain about CG5 slew noise, the mount is completely silent when tracking!
Just by doing some minor adjustments I have quieted my CG-5s down from about the 70db range to the 55db range. The larger the scope the louder the mount. The OTA acts like a megaphone. Using 'Custom Rate 9' reduces the noise level even more.
Posted 11 January 2013 - 11:04 AM
It looks like they are offering a $100 savings on the C8 Edge HD + VX bundle (I assume "under $2000 means $1999).
Of course, if they end up clearing out Edge HD OTAs again and discounting the C8 version $200, buying the VX at full price and the OTA at a discount would be a better deal.
Posted 11 January 2013 - 01:54 PM
My CG5 served me without any headaches for almost 8 years. Last year I sold it and bought an Astrotrac as part of my increased mobility plans but still missing the functionality and ease of use of CG5. As soon as I saw the VX news, I made the decision What remains now is to turn this into a reality If we can get a good deal on the bundle, that would be the icing on the cake as you say.
I plan to buy a Hyperstar lens for the C8 for imaging at f/2, which would take care of most of the tracking issues in addition to PEC and guiding.
This will be my dream setup for shooting on the go.
Posted 11 January 2013 - 03:25 PM
Posted 11 January 2013 - 08:14 PM
Posted 11 January 2013 - 09:17 PM
Posted 12 January 2013 - 03:15 PM
Posted 12 January 2013 - 06:13 PM
Posted 12 January 2013 - 10:33 PM
Posted 13 January 2013 - 10:57 AM