APM/TMB 115/805 APO Celestron ED-80 Celestron 9.25
CG-5 Vixen Porta II
Naglers: 17T4, 13T6, 3-6 zoom UWANs: 28mm, 7mm Pentax 10XW, 10mm Radian
Misc EP: 50mm Parks, 42mm GSO, 2x TV Barlow, sundry plossls...
Live Life Right. Aim High, Think High
LX850 blog: www.LX-850.com
personal website: www.wadsworthobservatory.com
Orlando, Florida, 81° W, 28.5° N, Joined: 8/27/11
CGEM, C8, C11, AT72ED, NexStar 5SE
Orion Starshoot Pro V2 Color, NexImage 5 / ASI120MC Planetary imagers
My photos: http://astrobin.com/users/Steve/
Orion XT8 Classic, Self built EQ platform
AstroTech 72ED, AstroTech 6 Imaging Newt
Celestron Advanced VX EQ Mount
Celestron NexStar SE 4/5 Mount (for grab and go)
Canon T3i, Canon XT (Hap Griffin Baader Mod)
QHY5L-II Mono/Orion 50MM Mini
Fort Bend Astronomy Club
SV115 APO/CGEM Mount/SXV-H18 CCD/Orion SSAG & ST80 Autoguider System
This space for rent
Quote:How do you know you need a better mount? Use a reticle eyepiece, work on better polar alignment and figure out how to maximize what you have. Search for that mount on Astrobin and you'll find great photos made with it. Never been on a site where spending more money is regarded as such a magic bullet. Lol.
My PixInsight Tutorial
Pointer to Other Useful Threads of Mine
Quote: It is MUCH cheaper to get into auto-guiding. The alternative is to go old school and manually guide. It is worth doing once or twice to figure out why almost no one does it anymore.
Quote:The alternative is to go old school and manually guide. It is worth doing once or twice to figure out why almost no one does it anymore.
Tim Trice Celestron Nexstar 6 SE Orion Astrograph 10" IEQ45 Canon 60D ZWO ASI 120MM (Mono)
G11/Gemini-2/OPWB Canon 60D (unmodified) with 18/55mm kit lens and "nifty fifty" lens Assorted M42 screw mount lenses (28mm thru 300mm) Celestron 102GT refractor (Costco special) 8/10 inch astrograph someday. DeepSkyStacker 3.3.2 StarTools 1.3 http://www.astrobin.com/users/StarGale/ http://everettastro.org/
Cliff Hipsher ICC USN (Ret.) '03 883 XLH Meade 2080/LXD75 (Big Blue) Meade DSI Color Meade DSI Pro TEC Cooled Celestron Neximage Celestron Radial Guider Star Guider Filter Wheel Vixen Flip Mirror Some Eyepieces Swift 7x50's Empty Wallet I.A.M.B.K. I ride. There fore I am...
Astro-Tech AT8IN, AT72ED
Orion ST120, Orion ST80
Celestron CGEM (DIY Hypertuned)
QHYCCD QHY8 OSC Orion SSAG, StarShoot G3 OSC Canon T3 (unmodded)
My Astrobin images
Clear skies - Jim Crazy PNW imager !
A-P Mach1 on 12" concrete pier - ROR structure.
Tak FSQ85-EDX, Tak FS-128. Orion 8" f/3.9 w/MoonLite motorized - MPCC MkIII CCD:
SBIG 8300M/FW8, Astrodon 36mm LRGB, 5nm Ha, 3nm SII, OIII - Canon EOS 6D unmod SSI3, SSAG,
Skytools3pro, MaxImDLpro, PSCS5, PSPpro, TheSkyX, TheSky6, BYE, StarTools
Orion XX14g -for visual- diags, ep's, accy tubes, Binocs .
Quote:I recently got a 2 kg ioptron weight that I use with the Z71 on CG-5. You need to insert a small iron pin to tighten against the CW shaft. However you can do the east bias with your present CW?
Quote:Yes, with the 11 lb counterweight it needs to be almost all the way to the mount. I need to find a 5 lb. counterweight so it can be slid down further.
Quote:If you are using the C80ED scope it might be very tail heavy. I added a 2.5 lb. ankle weight to the dew cap on my scope to get it correctly balanced in that axis. Check this right away because it can be a major headache for your tracking.
Quote:I am *not* using rings, the Celestron ED-80 came with a ring cage of which a dovetail that sort-of-fits the CG-5 is a part. It's a TINY dovetail, and doesn't really let you move the scope forward or backward--but the price was right...I know astronomics has a set of 4" rings that they say will fit an ED80 as well as some 4" scopes--don't see how they can do both, but maybe they can. Haven't found ED80 rings advertised as such.
GM-8 GII (soon w/OPWB) ; Orion Sirius w/EQMOD
Orion 80ED; AT72ED; AT6RC
Atik 314L+; Atik 420C
Moonlite Focusers, Moonlite stepper motor
Astrodon 5nm Ha, LRGB; Baader OIII, SII
Starlight Xpress 7x1.25" FW
Sequence Generator Pro, PinPoint, PixInsight, PS CS 5
Quote:Not really--if I understand correctly , east bias means on the scope side. Scope, finder and camera just about balance the scope with the 11 lb counterweight in its closest position, but I need to pull the counterweight about 1/2" away else it hits the mount casing.
If I misunderstood "east bias" it wouldn't be the first time.
Quote:These are extruded aluminum but I have a set and they work ok.Item # Ring Inside Diameter (ID) Rings Fit 7371 100mm/3.9" Orion AstroView 100 Refractor Telescope, Orion SkyView Pro 100mm Refractor Telescopes, Orion 80mm ED Refractor Telescopes, 100mm f/6 telescope optical tube assembly
Quote: Quote:Not really--if I understand correctly , east bias means on the scope side. Scope, finder and camera just about balance the scope with the 11 lb counterweight in its closest position, but I need to pull the counterweight about 1/2" away else it hits the mount casing.If I misunderstood "east bias" it wouldn't be the first time. My understanding of "east bias" is there is more weight on the east side of the mount, whether it be from the OTA or the counterweights. If the OTA is providing the extra weight on the east side, it will be providing a "west bias" after a meridian flip, so a rebalancing would be necessary. A solution to avoid the need for rebalancing is to use a weight suspended from a string wrapped around the RA axis to provide the "east bias". Using this method the bias remains the same before and after the meridian flip. This is what I do with my G11.Another problem with not using the string method is that the "east bias" becomes vanishingly small and ineffective as you approach the meridian.Gale
Quote:Not really--if I understand correctly , east bias means on the scope side. Scope, finder and camera just about balance the scope with the 11 lb counterweight in its closest position, but I need to pull the counterweight about 1/2" away else it hits the mount casing.If I misunderstood "east bias" it wouldn't be the first time.
Quote:Jason, I flip through every single image. I don't care if I have 20 or 100. I generally do them as I take them but at times I have fallen asleep I make sure to do it as soon as possible. You're image is only as good as your worst data.
"My GOD, It's Full of Stars!" For the Obser: Atlas EQ-G w/moded SN8,JMI moto-focus, flocked tube,custom mirror cell.ED80 w/ACCUFocus,SSAG,DSI,EZ Guider. Modded Canon T1i,Pentax K-5II. For the field:14" Orion 14xxi,Flocked Tubes,Custom Paint,6 Fan Cooling,LED ground board lighting. Celestron CG5GT for film/digital photos w/EZ Guider, Atlas EQ-G w/an ES102ED/AT72 Piggy backed,EZ Guider. Various 1.25 & 2" Eyepieces.
Quote: How big a weight though? What percentage of the payload?
Quote:which I assume is same tube diameter as the Celestron ED80)
Quote:Quote:which I assume is same tube diameter as the Celestron ED80)They aren't.
Quote:Quote:Quote:which I assume is same tube diameter as the Celestron ED80)They aren't. Interesting--do you know what the Orion ED80 tube diameter is? It wasn't listed on their website. Other than that mystery item, the scope looks VERY much like the Celestron ED 80 (23.5" length, 80mm F7.5) but with a Crayford rather than R&P focuser.
Quote:Thank you for clarifying this!!!
It may also explain why I got much better stars on M2 and M15 than I got on Andromeda, when I started photographing those they were on the other side of the meridian, and my mount may have been better balanced on that side!
How big a weight though? What percentage of the payload?