Apertura 10" Dob Parracor, round table platform
TMB/APM 115 LZOS APO w/ silver CNC
Astro Tech 72ED
on CGE PRO
Quote:So lets say I am going to stay exclusively on the east side of the meridian. Where should I pick my 2 alignment stars? I am guessing on the east. Should I still do 4 calibration stars on the west even though I am never going to observe over there? Is there any way to pick them on the east and will that make it perform better?
Dave JessieOutreach Events
Quote:What is a "Keyspan"?
Quote:Read the manual. You can switch the routine to have the alignment stars be on either side. That way the calibration stars can be done on the side you are planning most of your visual use.
Takahashi TSA-120 & Explore Scientific 102mm APO Refractors
Lunt 60mm PT Ha
Celestron Edge 800 & Edge 1100 SCT's
Celestron AVX & CGEM Mount's
Televue Ethos 100* 21mm, 17mm, 13mm, 10mm and 6mm & Explore Scientific 82* 4.7mm Canon Rebel T3i DSLR SBIG STF-8300M, FW5-8300, OAG-8300, ST-Ic guide & planetary camera
AVX mount. 8SE. Explore Scientific ED80 APO, Comet Hunter & Twilight II mount. Orion XX14i w/Moonlight focuser. 10" Zhummel Dob Celestron XLT 120 on CG4 w/tracking. Orion ST 80 on Smart cube on survey tripod. Apogee 90 on Sunpak tripod Apogee RA-88-SA bino's 25x100 Tachyon 20x80 JT(?) 15x75 Skmaster C-90 Mak/Cas (Paper weight) Hyperions & a Paracor. http://sites.google.com/a/ericstarpage.net/www/home
Quote:And time for a question of my own...I have two AVX's. One I use for outreach since it's a bit banged on (from using it for outreach) and the other I was planning to use for AP. As I was using the AP mount I noticed odd behaviors.Problem #1: When I would be doing alignments and using the UP direction button on the controller it would pause and then there would be a big "jump" in the motion almost like it was releasing stored tension on the worm drive and catching up to the point where it should be. It would do this if I was centering an object in the EP as well after alignment.Problem #2: It would slew to the point where the OTA was pointing straight up and the weight bar was 90* to the ground with the head facing West and bar East. The motors would continue to run at full speed #9 but the mount would not move.Problem #3: When I would target something near zenith it would be several degrees off target. Yet anything below 70* elevation would be fine.This was not unique to one scope. It occurred with the 11" (where I first noticed it), the 8", and the Tak.Defective mount/worm gear? Or am I missing something. Balance is good on all three and locks are tight but not hard tight. Battery is fully charged and it occurs when I run it on line power from the garage as well. Those were the first three things I thought of and checked.
Deep Space Products
Quote:And to Shaka, I have had no problem what so ever with the goto finding and nearly centering every object regardless of it's location in the sky or the initial orientation of the alignment procedure. Just set up the scope and use it.
Quote:Can someone explain the "Get Axis Postn" command. I thought this would show me the Alt Az coordinates. But when I tried it on the moon last night it was showing me an Altitude of 357 degrees which is obviously impossible. Even when I'm pointing at the North Pole it says 90 alt and 90 azm.The mount has been aligned and it does show the proper RA Dec for any object. The gotos and tracking are otherwise perfect. I'm just wondering what is going on with these alt/az coordinates. Is there a bug here?
Quote: BUT with the vertical direction, it does NOT cooperate properly. When I ask it to make the star go to the top of the FOV and then bring it back to the centre, it then drifts downwards about 1/4 of the FOV towards the
Uncle Rod Uncle Rod's Astroblog: http://uncle-rods.blogspot.com/
Quote:"Vertical" is meaningless in this context, so I can't tell you which axis is affected, but I would guess declination. A little backlash (what is "rubberbanding"?), especially in dec, is to be expected in this and similar mounts at this price level.
In the above link I explained what I mean by rubber banding.
Paul B. Jones http://www.astrobin.com/users/bunyon/
Quote:... Now that I plan on getting this mount I'm not sure how to power it. Can I use a AC/DC converter like this particular one that I happen to own? http://www.amazon.com/Replacement-Monitor-Adapter-Power-Supply/dp/B0023Y9EQC/...If not, what AC/DC converter adapter can I use? Also, I will now need some kind of DC power supply for the rare times I go to a dark site(mostly into moon and planets). Are there any other power supplies that I can use other than the Celestron power tanks? The thought of powering a tank all year for the one or two times I go to a dark site seems wasteful. Another concern is ruining the tank by under of over charging. Are there tanks that have an over charge protection where I can just leave it plugged in all the time? Do I have to worry frying my hand control by too many amps or as long as it's 12volts and over 3 amps I need not worry about too many amps? Thanks, Carl
Quote:Quote:... Now that I plan on getting this mount I'm not sure how to power it. Can I use a AC/DC converter like this particular one that I happen to own? http://www.amazon.com/Replacement-Monitor-Adapter-Power-Supply/dp/B0023Y9EQC/...If not, what AC/DC converter adapter can I use? Also, I will now need some kind of DC power supply for the rare times I go to a dark site(mostly into moon and planets). Are there any other power supplies that I can use other than the Celestron power tanks? The thought of powering a tank all year for the one or two times I go to a dark site seems wasteful. Another concern is ruining the tank by under of over charging. Are there tanks that have an over charge protection where I can just leave it plugged in all the time? Do I have to worry frying my hand control by too many amps or as long as it's 12volts and over 3 amps I need not worry about too many amps? Thanks, Carl No such thing as "too many amps" capacity other than mundane matters of weight and cost. If your supply is "12V" (so-called 12V is probably between about 12V and 14V), the load (your mount) will draw the current it needs; if the supply has more current capacity, that's just cushion - it won't be used. If the DC plug on your AC/DC adapter is the right size and polarity it should work fine. If not, you can adapt it, but do be careful of the polarity! If you're starting from scratch, a small, cheap 7 Ah jump-start battery pack with built-in charging circuit and cigarette lighter receptacle from WalMart or auto supply store may be just the ticket. With this, if you're at home, you won't need an extension cord to hassle with and possibly trip over to power the mount, and it will power your mount all night long in a remote site to boot! As for leaving it plugged in all the time, I recharge mine overnight after using it, and every now and then if not used for many weeks at a time, but not constantly. It was cheap, about $40, but still going strong after three years. It may stand being constantly on charge, but I don't want to test this, and is easy enough to not do.
Quote:It actually doesn't matter what direction (up/right, down/left, etc.) is used as long as ...1) you're consistent in using that direction to finish all movements during your initial alignment 2) it matches the Goto Approach direction set (under Scope Setup)
Quote:Will PEC playback does/replicates Dec corrections i did on training, on AVX?