My gear: --Celestron 8EdgeHD & 11EdgeHD | 80mm F/6 Triplet | Modified Canon T1i | QSI683WSG-8 | Celestron AVX mount | iOptron CEM60 mount | iOptron ZEQ25 mount --- My skies:
6" Baby PowerNewt ES 152mm Achro iOptron iEQ30 QHY12 Lodestar & 50mm Borg guidescope Luck
Home-built Newt: 10" f/4.5 Royce conical primary, Skywatcher NEQ6 (Astrotroniks tuned) iEQ45, Duo-T, 8" f/4 Skywatcher Quattro CF 120 ED f/7.5 Skywatcher Black Diamond 80ED Stellarvue
SVR90 Raptor QHY9C OSC Camera ZEQ25 EQ Mount Porta II Alt-Az
Metuchen N.J. C10ngt TV 85,102 2 cg5gts cube pro 13 ethos 27 pan 19 pan 24 pan Baader wedge,35 pan 6 radian 2xpowermat 4xpowermate 9 nagler jmi feathertouch 35 Panoptic pst Denk std Denk 2s&d21s+ Pst doublestack,SM40 12Nagler Questar hd pier DSI 2 color SBC 900NC Star seek module C 9.25 slt mount AT 80 apo IEQ 45
Quote:Michael,Two things...1. Make sure your saddle will not allow the scope dovetail to accidentally seat in a canted position. Paul discussed this in the Zeq25 thread.2. It sounds like they actually forgot to put springs under your tension knobs. There are supposed to be springs there on the Zeq25 mount and I bet they should be there on this mount as well. I would call ioptron about that...The mount looks like a beauty overall! Good luck!...John
Black Creek Observatory C11 EdgeHD C8 AT6RC Eon80mmED
8" GSO RC with CSL Moonlite FocuserTelevue TV60isLosmandy G11 with Gemini 2 (with Ovision upgrade)
SBIG STT-8300m with Self Guiding filter wheel
A wide assortment of lenses for my Canon.
Quote:Fantastic!What happened to the Pacman sound?
Meade LX200GPS 14", Meade LX200ACF 10" Celestron C8 SCT w/Hyperstar (CGEM Mounted) Explore Scientific AR152, 127mm APO, 102mm APO, 80mm APO AT 6" RC, William Optics GTF 102 Lunt LS60TDS & Cak B1200 QHY10, ATIK 460EX(M), 450C, Starlight Express H18 w/FW and OAG Orion StarShoot Pro V.2, Orion StarShoot SS III, NexImage 5 & PG Chameleon Meade LPI, DSI-C 1, Lodestar & SSAG (autoguiders) Canon XSi Digital Rebel Hap Modded Images Plus 4.0, MaxIM DL Pro 5.14, BackyardEOS
Astrophoto: Intes Micro ALTER-M606 (6" f/6 MCT), Astrotech AT6RC (6" f/9 RC), 2x Tair-3 lenses (300mm f/4.5)
Visual: Celestron 8 SCT ('77 Orange Tube, 8" f/10), Selsi #247 Refractor (aka Towa #339, 80mm f/15), Tasco 11TE-5 Newtonian (4.5" f/7.9), Galileoscope (50mm f/10)
Mounts: Celestron CI-700, iOptron ZEQ25GT, Celestron CG5-ASGT, plus a couple old EQ2s My Astrophotography Site: http://ap.x-wing.ca/
Quote:So Michael, the noise you heard during slewing was just the bolt rattling, not the gears, correct?
-DannyMy warehouseMy Channel
Quote:Exactly right. The CEM60 doesn't use springs as the worm block is held against the main gear via magnets. Really slick btw. The worm then rides smoothly along. I feel there is room to improve the way the knob rests when engaged and I excited to see how things go. iOptron has been very responsive to my feedback so far. Hopefully the clouds will clear, my 11" EdgeHD will arrive this week and I can start doing some actual testing.
My images: http://mtanous.wordpress.com
Quote:In your experimentation with the mount, can you see if you can find a way to check how secure that CW shaft mounting mechanism is? I am interested in the mount once it is past beta, but I am uncomfortable with the adjustable counterweight shaft, looks to me like a source of flexure.
Quote:Quote:Exactly right. The CEM60 doesn't use springs as the worm block is held against the main gear via magnets. Really slick btw. The worm then rides smoothly along. I feel there is room to improve the way the knob rests when engaged and I excited to see how things go. iOptron has been very responsive to my feedback so far. Hopefully the clouds will clear, my 11" EdgeHD will arrive this week and I can start doing some actual testing. Thanks for the review, the mount looks nice.The clutchless design is nice but you need to be very careful when disengage the worm wheel because it is very easy to damage the worms. I had a ZEQ25 and I didn't like the idea of disengaging the worm wheels just for balancing the mount. Another issue with this design is that every time you engage/disengage the periodic error profile is modified. I have no clue how the CEM60 is affected by this cause it uses magnets to keep the right tension of the worm.Cheers,Jose
Quote:I wonder how that impacts the little compass used to find north. Kind of like a dog chasing its tail with the magnets pulling the compass and constantly telling you to turn the mount left till eventually your head explodes from stress. I'm telling you, it's a conspiracy
Quote: As long as you can accurately line up RA when you engage, you *should* have no troubles with the PPEC profile.
Quote:It has stepper motor? How can encoder work with stepper motor? Is the encoder inside the stepper motor? Is it possible to have higher resolution encoder than a single step size of stepper motor? I searched for CEM60 and trying to find out whether this is absolute encoder or a simple ordinary high resolution encoder and cannot find the answer. Anyone else know?Peter
Ed Thomas Deep Space Products www.deepspaceproducts.com
Quote: Is it possible to have higher resolution encoder than a single step size of stepper motor?
Quote:If it's not absolute encoder, then it must be relative encoder. Nothing special about it and it's very common and nothing wrong with it. Relative encoders are accurate. I just don't like the way dealers advertise this product as "high resolution encoder" or "high end encoder" making almost look like absolute encoder. It's funny that iOptron web site made no mention of "high resolution encoder" for CEM60 and no operating manual is available for download.Sample dealer ad:http://www.hampshireastronomy.co.uk/product/cem60-high-resolution-encodershttp://www.optcorp.com/ioptron-cem60-w-high-end-encoders-7201.htmlNeither of them mention exactly the type of encoder used.Peter
Quote:FYI. I am not trying to bad mouth iOptron. I prefer to get as much accurate information before purchasing any products.It's obvious iOptron is trying to be innovative and they appear to be.Peter