astro-physics 600 E
Posted 16 August 2013 - 07:14 AM
i am in France, i buy an Astro-Physics 600E
who become service ( repair ? )
it is a very good mount, but i have a big problemm
i never do a god auto-guiding..i don't know why
i have a Starshoot aund PHD guiding
where can help me ?
( i will be in Washington from 12 sept...to 1 oct. )
thank for your help
serge = egres
Posted 16 August 2013 - 07:57 AM
common problem on the 600E. I have one as well.
Posted 16 August 2013 - 09:02 AM
yes, problem guiding DEC
how do you do to have a good guiding ? if it is possible LOL
( it is a very good mount ...quiet, a very good GoTo, ..)
H E L P ...i want to make photos on 20 minits...
Posted 16 August 2013 - 10:05 AM
My 600E is non-GoTo (a QMD version). There is massive stiction in the DEC axis which causes the DEC to guide erratically. I have not solved this problem. The DEC axis has a large bronze bushing, not a ball bearing. I suspect this is the source of the problem.
You could try lubricating your DEC axis with Superlube.
Mine, I've done everything to it, and still no solution. I ended up buying a Mach1. I still have the 600E, because as you say it is a nice mount, and I want to get it working well.
Posted 16 August 2013 - 10:51 AM
i try to speak with rainycityastro
Posted 16 August 2013 - 10:59 AM
If needed, they will tell you where service in the EU can be found.
Posted 16 August 2013 - 12:33 PM
Posted 16 August 2013 - 12:36 PM
He told me he was getting performance equivalent to your Mach1 from his 600E GTO, so he saw no need to upgrade.
Odd... because my 600 performs at a much lower level - particularly the DEC axis - than my Mach1. Heck if my 600's DEC behaved like a Mach1 - i would not have a Mach1.....
Posted 16 August 2013 - 03:20 PM
On nights of good seeing i get 0.3" or better RMS.
I don't know how his dec guiding is tho.
Posted 16 August 2013 - 06:10 PM
there's no comparison on the DEC axis though..
OP: if you use Maxim for guiding, there should be an L-shaped pattern in the calibration. with my 600, the pattern is more like an I. Even when the DEC calibration pulse is 5X longer than the RA pulse. The DEC is really unresponsive.
Posted 17 August 2013 - 12:38 PM
The 600E is a bit touchy and requires good balancing on both RA and dec axes. I think it is also more susceptble to winds than the mach1.
However I am happy overall with the guiding performance. I believe it is roughly equivalent on RA to a mach1. I was getting around 0.6 arc secs RMS last night. I think that was seeing limited. Dec is however noticeably worse. I might have to look into it.
I have not lubricated or even fixed backlash on the mount. I dont believe the prevoius owner did anything either. . I think with some maintenance, this 12 year old mount might do even better.
Posted 17 August 2013 - 12:54 PM
Posted 17 August 2013 - 01:20 PM
I guess the money for the Mach1 shows up in the insensitivity to balance, instant response with minimal backlash, etc.
Posted 17 August 2013 - 08:10 PM
Posted 17 August 2013 - 11:19 PM
I will probably step up to a 900 or 1100 as I await a TEC 160FL late this year.
Posted 18 August 2013 - 02:00 AM
this is exactly the same as the 600E, except rebadged by Zeiss.