Quote:I cannot find it but it seems like I saw a video that suggested that the Orion Go-To dobs could be pushed manually as well as being Go-To.When you push manually, does the scope computer update the pointing position?Can I put in a target and have the option of pushing the scope to that location rather than having the motors slew there?Perhaps it would be easier to explain what I want to do.I want to use the Computer more like a digital setting circle for moving between objects, but once I get to the object, I want the scope to track.The goal is to use a small battery pack and conserve current by simply pushing the scope around rather than having it slew, which I am sure takes a lot of current.It would seem that the tracking would take very little current and that I should be able to run the scope for a typical session with a smallish 12v battery pack (rechargeable batteries, of course).I really don't need "Go-to" so much as I want tracking and DSCs, but I am hoping to eliminate power cords too if at all possible.Thanks....
Orion XT12G Telrad Orion Q70 32mm ES 82* 8.8mm ES 82* 6.7mm ES 82* 4.7mm Baader Hyperion Mark-2 Zoom Orion Skyline GLP + finder bracket Astro-Tech 2x Barlow for 2" and 1.25" Orion Variable Polarizing Eyepiece Moon Filter Orion UltraBlock Narrowband Filter GPS An awesome wife that bought me the telescope! Apertura AD8 with tweakers package Celestron 15x70 Starmaster Binoculars with tripod Celestron Neximage 5 Member CFAS http://www.astrobin.com/users/billytk/
Quote:... Also, your pointing is more accurate it you use the motors instead hand slewing....
Quote: Usualy I push manually the scope, and then I order the goto system to point the object
Dob guy for sure
XT10g w/cooling fan/Telrad Baader Hyperion MKIII Zoom ES 82°24MM Orion Edge-on 6MM/Televue 2X Barlow Orion Ultrablock/OPT Moon/Baader M&SG Filters Favorite Books: Star Watch/Celestial Sampler/Turn Left at Orion/ Software: SkySafari Plus Iphone 4s Temecula Valley Astronomers @ Facebook & Website
My eyepieces are made from the waste product of exploding stars. 10XTi 102XLT ST80A(2" Focuser) XW: All; XO: 2.58 Televue: Naglers-T1 Smoothside-full set, 17T4,12T4,Ethos 17,4.7; plossels-40,32,20,17,&7.4mm; Pans-22,24mm; Delos-6,8,12,17.3mm ES100: 5.5,9*,14,20 ES82: full set ES68: 16,20,24,34 NLV: 5,9,10,15 Ortho: HD-7,9; OPS-9,12 Meade RG 7mm Other: Pentax 12.5K(.965), 10mm Parks Zoom: Nag3-6 *=on b/o DAS Dark Site
Quote:Speaking of weight, I'm considering a XT12G.Will the GoTo/tracking motors play well with large eyepieces, like the ES 100? I heard something about needing counterweights. Is this true? I could not find any counterweights on the Orion website for their Dobs.
Quote:As the goto dobs track you can see the Stepping Movement during tracking and that should be expected. These scopes are designed for pure visual observation and are not designed for photography.
Quote:I can only see stepping movement very slightly at 200X and above. Nothing big or crazy and its only like every 20 seconds or so. Tim
Orion ED80 - AT Voyager with TNT,pier ext.,Vixon steel tray and Manny's mod.
Omni 120 cg4 with Orion pier ext. and RA drive
Orion XT10(Original F/5)
Jason Constellation Model 311(Modified with 1.25"Crawford Machine focuser & rings)
Binotron-27 (25mm & 17mm Sterlings)
Quote:The focuser's lifting power will give way before you need to add any counterweights
Dan Orion XT8g If your dob isn't broke, fix it anyway. Don't tell me what I want to hear, tell me the truth.
Quote: Quote:The focuser's lifting power will give way before you need to add any counterweights But, you may be able to tighten it up. My crayford had a "lifting power" issue when I received it. So I took it apart and re-assembled it. Now I can put a 2" ep, the (latest and heaviest) Orion SteadyPix camera mount and a camera on the focuser with no issue, and yet the operation of the focuser remains very smooth.BTW, this is a 2-speed focuser.
Quote:Focuser adjustmentTo Tighten: 1) Slightly and equally loosen the left and right parallelizing screws by turning CCW. 2) Slightly tighten the center tension adjustment screw by turning CW. 3) Equally tighten the L & R parallelizing screws by turning CW.To Loosen: 1) Slightly loosen the center tension adjustment screw by turning CCW. 2) Equally tighten the L & R parallelizing screws by turning CW.The purpose of the parallelizing screws is to keep the Teflon friction pad parallel to the focuser shaft. Notice that the pad is parallel to the shaft in the second picture. But you don't know if it's off, unless you disassemble the focuser. After you put it back together, you can carefully turn each parallelizing screw the same amount to insure you are not cocking the teflon pad.In this pic, the center screw is the tension adjustment screw and the screws on either side of it are the parallelizing screws.Be careful not to lose the o-rings. It's a pain putting the focuser back together with these small o-rings.