Click here if you are having trouble logging into the forums
Privacy Policy |
Please read our Terms
of Service | Signup and
Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User
Mike Loffland
Web Guru (Astronomics)
   
Reged: 09/03/04
Posts: 2442
Loc: Norman, Oklahoma
|
|
Goto or Not to Goto - Losmandy G11 Equatorial Mount with the Gemini Go-To System
-------------------- Whenever I’m about to do something...I think "would an idiot do that?" and if they would... I do not do that thing.
- Dwight Schrute, The Office
Meade Telescopes
Celestron Telescopes
Telescopes
|
lightfever
Pooh-Bah
   
Reged: 09/27/04
Posts: 1464
Loc: Macomb Michigan
|
|
Nice article.
Have been looking at those for a while. It will most likely be my next mount.
-------------------- Mark
Tasco 15-TE 76mm Sky Watcher 80mm ED AT-111
XT8i (with Woden re-figured mirror)
12.5" f/6.3 Dob (Underconstruction)
36mm Siebert, 24mm Pan, 13mmT6, 10mm XW, 4.7 UWA
8.8mm, 6.7mm, 4.7mm Meade 4000 UWA
Various Ortho's, Brandons, Nikon zoom and a Pentax 5mm XO
|
7331Peg
scholastic sledgehammer
   
Reged: 09/01/08
Posts: 958
Loc: North coast of Oregon
|
|
Very nice article. I went through the same debate with myself, and made the same decision. I don't need GOTO these days, the setting circles and star hopping work just fine, and the additional cost of the Gemini GOTO system was difficult for me to justify. KISS makes it easy to concentrate on observing instead of spending time or money on other complications. It's great to park a small 12 volt battery under the mount, plug it in, and go. By the way, the polar scope has now been modified so that the battery is incorporated within the knurled switch. It's still rather bright, but not so bright you can't work with it.
John
|
David Knisely
Postmaster
   
Reged: 04/19/04
Posts: 8778
Loc: Beatrice, Nebraska
|
|
My main complaint is with the Gemini system. The manual and instructions on alignment are rather poorly written, and it took a lot longer to get it up and running than it does my old NexStar 9.25SCT. I tried to help an amateur at the Nebraska Star Party to get his Gemini working, but it was an exercise in frustration. The people who wrote that manual really need to sit down and re-think things. They need to get someone who has *never* used the system before, try and talk him through it, and write down every single question he asks while doing it. Then, they need to re-write that manual and put all the alignment procedures and terms in one section, rather than spreading things out (even if it means a little duplication now and then). Despite how bad the Celestron manuals are, on the Go-To system, they are better written than the Gemini's was. Clear skies to you.
-------------------- David W. Knisely
Hyde Memorial Observatory
http://www.hydeobservatory.info
Prairie Astronomy Club
http://www.prairieastronomyclub.org
|
quantumac
sage
Reged: 12/17/07
Posts: 486
|
|
I find there are enough challenges in DSO astrophotography without adding a requirement to star hop. Consider problems like maintaining collimation, keeping the scope focused as the scope changes orientation, drift aligning the scope for proper polar alignment, choosing a suitable guide star, finding said guide star, keeping the guide star centered during a long imaging run, keeping an eye on the clouds, blocking the wind, avoiding the dew, and monitoring the image quality. Last but not least, I try to stay awake so I can do all of the above.
I will never again choose a mount for astrophotography which does not have go-to. Go-to doesn't take anything away from the experience of being out under the stars. If I want to star hop, I always have my trusty Celestron binoculars.
Similarly, while I learned to program computers at a teletype, and I use command-line tools daily as a software developer for a Linux/Mac OS X based shop, I wouldn't want to give up a windowing environment in order to feel closer to the machine.
So put me in the automatic transmission category.
-------------------- Scope: Meade 10" LX200R
Guide/Planetary Camera: Imaging Source DBK41AF02.AS
DSO Camera: QHY8
Guide Hardware: Celestron OAG, Shoestring Astronomy GPUSB
Software: Mac OS X, Starry Night Pro, Nebulosity, PHD Guiding, PixInsight, Astro IIDC. No Windows anything.
|
dymo
member
Reged: 02/28/09
Posts: 29
Loc: Germany
|
|
I am also fairly new to this hobby, about 6 months into it. But I got into it for different reasons/goals. Mainly I wanted to focus on photography. I wanted a hobby that required a fair ammount of learning, a fair ammount outside in the fresh air, and something that let me use my computer skills. So I went for astrophotography.
I spent a fair ammount of time outside/on the balcony with binoculars, and using stellarium as a star chart to locate objects. I found it very time consuming to locate an object. I also spent time semisharing a 12inch lightbridge. After watching the time consumed star hopping and then trying to locate objects. I decided the time "used/wasted" trying to locate and center an object, was time that could have been used imaging.
So i went with a low range goto mount. Mainly as there is more than enough accessories still needed for imaging, that there really just wasnt enough money
And I have to say, with the ammount of learning still required and time required while imaging. The time need to really acheive great focus, assuming one doesnt have an expensive auto/motorfocus focuser. The time refocusing when changing filters, unless one has expensive parafocal filters, and a filter wheel.
Theres also a fair ammount of time needed to setup all the additional equipment required while imaging, camera, laptop, additional power requirements.
On top of that, comes the ammount of learning still required to be able to produce decent images, decent of course being relative to the person taking the image. for imaging you need to learn so many things, focusing becomes almost an art form in itself. Tracking, and later guiding, arent just plug and play. once you do have images, either color or LRGB you still need to process those images, and learning to really use photoshop (btw not cheap at all) or Gimp. Processing is a fairly steep learning curve, and is also time consuming, I have spent 2-3 times more time stacking processing images, than it actually took to take the images.
So for me personally, I think theres enough time still invested in getting images, and more than enough to learn about getting to the point of being able to image well, and then processing them. So needing to still learn star charts, star hopping, and locating objects with a non goto mount, just adds one more peice of complexity thats really note needed, esp for beginners in the hobby.
A final thought, although with a goto you dont have to know the sky all that well, doesnt stop you from still learning they sky thru the goto system. You learn the major stars while aligning. With my high precesion setting, before locating an object, it requires you to located a star on the way, so you can learn the locations of several stars along the way, as well the controller listing in which constilation its located in. I also use Stellarium as a secondary goto system connected to my mount, so I can browse the area I am imaging thru the program, while I am imaging.
and a really final thought, Imaging is BORING..... having another scope, like a dobson, is something I really still want to get, then I can view the object while I image it. Some of the magic of being out under the stars get lost in translation while looking at it thru laptop. But even if I wasnt imaging, I would still prefer a goto to a non-goto, I prefer to spend more time on the object, then looking for the object.
my two cents
-------------------- I have round thing with a mirror in the bottom, attached to spinny thing, and it lets me see shiny objects in the dark....
|
John Miele
professor emeritus
   
Reged: 05/29/05
Posts: 720
Loc: North Alabama
|
|
David,
Nice write-up but I am afraid you will soon regret not having goto. Frankly, I can't believe your fellow club members who image did not steer you into a goto mount with fierce determination! As you gain experience imaging, it will become very clear to you why. Good luck and clear skies!
-------------------- C11/Atlas Mount/Denk II BV
SV102ED/AT Voyager
DSI IIc, DSI II Pro
ST-80, Mallincam Hyper Plus B/W Video Camera
|
PAW
sage
Reged: 10/12/06
Posts: 258
|
|
In reference to the opening paragraph in the review, I am just getting into Solar System imaging with my SVP and getting ready to order the Dual Axis drives for that purpose. I thought for a beginner a SVP would be sufficient just to get started in AP, although based on the review this is apparently not true?
|
Ian Robinson
Pooh-Bah
Reged: 01/29/09
Posts: 1497
Loc: Gateshead.NSW Nth Coast,Austra...
|
|
I've never used Goto , only the reason my new GEM has it is because I couldn't get the mount without Goto.
Nothing wrong with finding things in the sky the old fashioned way and learning the sky in the process.
|
Bill Lee
newbie
Reged: 04/03/07
Posts: 2
Loc: Massacusetts
|
|
I have had a G11 since pre-Gemini days. This is a fine mount. The only thing that "got me" was that unlike my other autoguider (ST-237), the Orion autoguider doesn't need a relay box (opto- or electrical isolator). This is a good thing, just don't spend a whole night figuring it out like I did!
|
SkyscraperJim
professor emeritus
Reged: 07/29/07
Posts: 593
Loc: Providence, RI
|
|
Great article. I opted for the non-Gemini G11 because the price was right. I wanted an astro-imaging capable mount that I could grow into, since I had always been a visual observer and star hopper up until then.
I now do imaging maybe 20% of the time I have it out. When imagine I use the setting circles to get on target quickly. Its a shame many mounts these days don't even include setting circles. I guess with goto few people would actually use them.
If you get a G11 without Gemini, don't forget that it is always a later add-on.
When I feel the need for a more capable mount with goto, I will probably order a Mach1 and keep the G11 for visual-only use.
-------------------- Jim
TMB/APM 130/780 (#185) on G11
TMB/APM/Lomo 80/600
Tele Vue Pronto (#3533) on Half Hitch
|
PAW
sage
Reged: 10/12/06
Posts: 258
|
|
I still believe that a SVP mount can be successfully used for AP - even if for short exposure. I guess I will find out.
|
Castor
member
Reged: 03/26/08
Posts: 85
|
|
Very nice article and good title too!
I recently went through the same process and in the end made the same decision as the author for similar reasons.
The G-11 has been the mount of my dreams since 1993 when it was marketed by Celestron and adorned the back cover of Astronomy/Sky&Telescope magazines, but I could not afford it back then. A few weeks ago, when my economics allowed it and I could finally make my dream come true, I found myself in the middle of a dilemma: If I chose the non-Goto, I would probably not be able to afford the Gemini Goto later (it is much more expensive when purchased alone). If I chose the Goto version, and for any reason the complex electronics gave up too soon, I would not be able to buy the standard drive of the non-Goto G-11 to replace it (at least not as an off-the-shelf item from the regular dealers).
I am a visual observer and enjoy star-hopping, so although it would be nice to have the Gemini goto as an extra, most of the time I would use my mount manually. And also I was very concerned for the power hungry Gemini when used in the field. So as I said, in the end I went for the non-Goto G-11 and for the very brief time I've had the oportunity of using it, the Losmandy G-11 has turn out to be all I have ever dreamed of, and more.
I wonder why reviews of a mount as popular as the Losmandy G-11 are so rare? The author did a great service into bringing the subject to light. Thanks!
-------------------- Fidel
Scopes: TV NP127is f/5.2 • TV-85 f/7 • C6 SCT f/6.3 • 8” SCT f/10 • 10” SCT f/10
Mounts: G-11 • GM8 • GP2 • LXD55/2”Tripod • Gibraltar5 • Panoramic
EPs……: Naglers: 3.5, 5, 7, 9, 13 T6's; 9T1, 12T4, 17T4, 22T4; 31T5.
……………… Ethos: 13, 21. Panoptics: 19, 24, 35. 5x PMT.
……………… S4000: 6.7 UWA. Plössls, 2x Blw, f/6.3 FR.
Other…: 8x42 Binos …
|
bill w
Postmaster
   
Reged: 03/26/05
Posts: 7155
Loc: southern california
|
|
nice review just thought i'd point out that there are go to systems other than the gemini that can be added to the G11 which may be more powerful and less problematic e.g., PEC doesn't work correctly in the gemini system. eg http://www.siderealtechnology.com/
-------------------- -bill w
nexstar 8 GPS
canon 300D, Toucam Pro II
SXV-H9C, H9, SX Exview autoguider, SX-AO
FS 102 (OLV), FS60 CSV, 8" LX200R, G 11
http://astro.whwiii.net/
image processing monitor calibrated to just differentiate darkest boxes:
|
dmilone
member
Reged: 02/22/08
Posts: 39
|
|
The Orion SVP, I believe, is a good mount to use for solar system objects. Web-cam photography is quite a different process from DSLR or CCD Deep Sky Imaging. Since you are basically shooting a video, it’s ok if tracking isn’t perfect and the planet wobbles around a little bit. The Regi-stax program will align everything for you.
|
dmilone
member
Reged: 02/22/08
Posts: 39
|
|
I’d like to thank everyone for all of your feedback. I don’t want to leave anyone the impression that I’m totally against go-to. I’m not knocking it. It was strictly my own personal decision to choose not to get it at this time. We all have different needs and preferences.
|
John Wunderlin
Vendor - Spike-a Focusing Mask
   
Reged: 10/01/04
Posts: 855
Loc: Mineral Point, Wi
|
|
Just curious- does the non-gemini have an autoguider port? I ended up buying the Gemini because I wasn't sure if it had that or not. I agree the Gemini is pretty clunky to use- there just aren't enough buttons on the controller- navigating that menu system is not fun- especially when you can accidentally reverse the buttons on the controller and suddenly everything is backwards. Wow.
-------------------- John Wunderlin
Vendor - Spike-a Bahtinov Focusing Mask
Empire Ranch Observatory
Iowa County Astronomers
|
jrcrilly
Refractor wienie no more
   
Reged: 04/30/03
Posts: 25859
Loc: NE Ohio
|
|
Quote:
Just curious- does the non-gemini have an autoguider port?
Yes. It's the handbox port; the handbox is wired the same as a guider. You can use both at the same time with a "Y" cable.
-------------------- John C
Urban Observatory
A&M/Astreya 76mm F/6 APO
Meade 80mm F/6 APO
TMB/LOMO 80mm F/7.5 APO
Meade 152ED, 178ED F/9 "APO"
Meade 12" SCT
Teeter 20" F/3.8 truss Newt w/ServoCat
NJP, LXD700, CGE, GPDX/SS2KPC
ST-10XME, DSI Pro
|
John Wunderlin
Vendor - Spike-a Focusing Mask
   
Reged: 10/01/04
Posts: 855
Loc: Mineral Point, Wi
|
|
Thanks. There's $1k I'd like to get back... I do like the computer telling me where to go, but the push-to digital setting circles would have been fine with me. The G11's wonderful clutches make it a great push-to setup.
-------------------- John Wunderlin
Vendor - Spike-a Bahtinov Focusing Mask
Empire Ranch Observatory
Iowa County Astronomers
|
Bowmoreman
Post Laureate
   
Reged: 09/11/06
Posts: 4128
Loc: Bolton, MA
|
|
I very much enjoyed reading the article... but I have to question the assertion that Gemini isn't happy unless it has 15vDC or more...??? This is just simply not the case in my first hand experience.
I've been using my Gemini (in this case on my MI-250, a much more "robust" mount than a G11) for 4 months now with nary a hicup, feeding it at first from a 3A 13.8V RadioShack AC/DC converter, and now off my 12V Battery power supply (basically one of those car jump-starter gizmos)...
In both cases the measured voltage was around 13.5 - 13.8Volts...
I've had extremely accurate tracking and guiding with no hiccups... not once.
So, "complications around getting 12vDC" is NOT a reason to avoid Gemini.
Other observation (in response to another response above) in re: Gemini itself.
Is it "Arcane" (in comparison to, say NextStar)?
Yes.
Does it matter? It might (to some). Not me, though.
I - at first - found the manual a tough slog (yes it could be more "organized" to make a "better read"... (it is rather oriented more as a "technical manual" than a Users Guide after all!).
But, after re-reading it a couple of times, my initial experience with Gemini was pleasurable (well, once I realized that I'm 4 hours from UTC instead of 5 hours from UTC during daylight savings time that is!)...
My second and subsequent uses were a doddle - I haven't referred to the manual but one subsequent time - the night I setup to do my first autoguiding... Since then, it's been gathering cobwebs.
Gemini is a precision designed system that truly rewards (frequent/constant) use; with familiarity comes the ability to quite literally run ALL the controls - in the dark - without even LOOKING at the hand control...
Try that with NextStar or AutoStar or whatever else out there... 
It is complex precisely because it is so feature rich, and because it was clearly designed for the "power use" (not a beginner). In that sense, I find it rather reminds me of my old Teco/EMACS days (in contrast to the "easier/friendlier" command line editors that were the alternative). It rewarded learning with Power, Speed, and precision.
Those of you of THAT computer era will immediately understand whereof I speak!
I've used all 3 "main types" of HC controllers:
Celestron and Meade - which are *roughly* equivalent Vixen StarBook - the "full on video game" Gemini...
I'll take Gemini.
I've not more than pushed 3-4 buttons on my neighbors AP1200 - so can't comment there...
The G11 is a great mount, well made, and Gemini takes it to that next level for AP (IMO). Don't fear adding it later!
When I have a good 10-15 (or more) pointing model built up (takes very little time and only must be done if/when I physically move the moount) - the ability to literally land small targets virtually dead center on-chip for AP is a God Send! (especially when I can't see them in my 80mm Triplet or the Finders!
It means I can LEAVE my camera; precisely focused, on the OTA - and saves having to constantly re-do flats, etc...
GoTo is the only way (for me) for AP - huge time-saver.
Again, great article, and I really like how the pros/cons were "Weighed" and balanced...
clear enough skies
-------------------- Dave
Imaging: MI-250+ADM/SBS/Optec Libra: C11Hyperstar,TMB80SS
Visual: XT10i RTP
EP: 31T5,22T4,17T4,12T4,13Ethos,10XW,8Ethos;2x Powermate,Paracorr, 1.6X Antares, Hyperion8-24Zoom
Cameras: Mallincam Color Hyper Plus, QHY8
Guider: SBIG STV eFinder
Key Add-ons: Gerbings Heated clothes, WilderSkiesObservatory(BYO#90), Speco 9"Monitor
|
roystarman
newbie
Reged: 01/26/09
Posts: 1
|
|
Get Digital Setting Circles? NGC max or SKY Commander. This is kind of an inbetween the manual and a goto mount.
|
Restricted
member
Reged: 08/21/09
Posts: 16
|
|
New to the site, trying to learn as much as possible, your review was helpful and informative. Thanks for taking the time to do so.
|
Zotty
super member
Reged: 07/24/09
Posts: 180
Loc: The Netherlands
|
|
Finally got a powersupply to give my G11 a spin. Can't comment yet on details, but I do feel the need to add a note about the Gemini handcontroller. The quote "deluxe handcontroller" just feels extremely cheap compared to the mount itself. Cheap plastic housing and cheap - click click - buttons.
That's my only beef with it after playing with it for 1 hour. The menu structure settles quickly into your mind and I love the look of the display.
One other thing that new users should keep in mind is that an additional lighter counterweight could come in handy. Not having a main OTA yet - only a 72mm guidescope - I can tell you it's impossible to achieve balance with the included 21lbs weight... wish I had bought a lighter weight right from the start.
-------------------- GSO 8" RC ♦ WO Megrez 72FD ♦ Losmandy G11 Gemini ♦ Atik 314L+ ♦ Starlight Xpress 2" wheel with Astronomik filters ♦ QHY5
Gammelke observatory
|
Sarkikos
Carpal Tunnel
   
Reged: 12/18/07
Posts: 1724
Loc: Suburban Maryland, USA
|
|
Ian,
Quote:
I've never used Goto , only the reason my new GEM has it is because I couldn't get the mount without Goto.
Nothing wrong with finding things in the sky the old fashioned way and learning the sky in the process.
Here, here. I second that. None of my scopes have goto or pushto and I do fine, thank you very much. Most anything I can't find would not be worth seeing once you do find it, because it'd be so faint and fuzzy. Though if I ever get a bigger scope - which probably won't be for at least a few more years - I'll probably get one with pushto, i.e., DSCs. But I don't think I would ever get goto. Sorry, but that still seems like a gimmick to me. Just tell me where the object is. I don't need the scope to move itself there! And I don't take pictures. I want to look at the object, not at a picture of the object. 
Clear Skies, Mike
-------------------- C10-NGT on 1stBase (DSO); Z8, Bosma 6" f12 MCT (NSO); 6" f5 Newt, 4.5" f4.4 Ball (Handheld RF w/GLP); C4-R, 130ST (NSO/RF/DS); 90mm f13 MCT (Luna/DS); ST80+Crayford (RF/DS); SkyMaster 25x100/15x70; Zhumell 20x80; Barska XWA 10x50/8x40 (9.5°!); CV 2.3x40 (26°!); BV-125C; CG5, CG4 (2d); SV AZ, 501HDV on 055XB, P+ on Oberwerk; QuikFinder, Telrad; 11x70 RACI Finder; Dynamo Pro, Dew-Not; Orion 5-Filter Wheel; ES 14 100°, Baader Zoom, Baader GO 9mm, Plossls, Orthos, Kellners; Barlows, Reducers
|
Alen K
newbie
Reged: 11/25/09
Posts: 4
|
|
"The Atlas is by far the least expensive mount. I really like the Orion Company. However, I already own a lot of equipment with the Orion brand name and felt like trying something different."
The G11 is a fine choice, no doubt about it, but I'm taken aback by this statement. A product is ruled out simply because you own too much from the same manufacturer? That only makes sense to me if you are disappointed by what you already own.
|
Jim Rosenstock
Post Laureate
   
Reged: 07/14/05
Posts: 4171
Loc: MD, south of the DC Nebula
|
|
Quote:
Here, here. I second that. None of my scopes have goto or pushto and I do fine, thank you very much. Most anything I can't find would not be worth seeing once you do find it, because it'd be so faint and fuzzy. Though if I ever get a bigger scope - which probably won't be for at least a few more years - I'll probably get one with pushto, i.e., DSCs. But I don't think I would ever get goto. Sorry, but that still seems like a gimmick to me. Just tell me where the object is. I don't need the scope to move itself there! And I don't take pictures. I want to look at the object, not at a picture of the object. 
I'm with you, Pal! We don't need no stinkin' go-to!!! 
Jim
|
David Knisely
Postmaster
   
Reged: 04/19/04
Posts: 8778
Loc: Beatrice, Nebraska
|
|
Quote:
Ian,
Quote:
I've never used Goto , only the reason my new GEM has it is because I couldn't get the mount without Goto.
Nothing wrong with finding things in the sky the old fashioned way and learning the sky in the process.
Here, here. I second that. None of my scopes have goto or pushto and I do fine, thank you very much. Most anything I can't find would not be worth seeing once you do find it, because it'd be so faint and fuzzy. Though if I ever get a bigger scope - which probably won't be for at least a few more years - I'll probably get one with pushto, i.e., DSCs. But I don't think I would ever get goto. Sorry, but that still seems like a gimmick to me. Just tell me where the object is. I don't need the scope to move itself there! And I don't take pictures. I want to look at the object, not at a picture of the object. 
Clear Skies, Mike
You know, I used to think much as you do. I had a German Equatorial home-brew Newtonian that I could (and still can) find about anything I want to that is within range of the instrument. I had been star-hopping for nearly 30 years with simple un-driven instruments. I could run rings around some of those using Dobs, as I had the "right-angle sweep" star-hopping technique that was extremely reliable and fast. All was well, that is until Cloudynights sent me the NexStar 9.25GPS to review. The more I used it, the more I liked it. Eventually, I just bit the bullet and bought the review instrument, because I discovered that I was starting to like the ability to Go-To objects without having to pour over star charts and squint in a finder to try and find the faint "take-off" star for my right-angle sweep. I liked that fact that the Go-To was allowing me to spend more time on observing the object and less on finding it, making me a more efficient observer. I liked the fact that on nights when the moon made finding take-off stars difficult to impossible, I could still observe things anyway just with the push of a few buttons. It took a while, but eventually, I began to like Go-To a lot more than I thought I ever would. I won't knock anyone who wishes to use whatever technique they like for finding objects. However, I have gained a new appreciation for the convenience and greater efficiency that Go-To has brought me. Clear skies to you.
-------------------- David W. Knisely
Hyde Memorial Observatory
http://www.hydeobservatory.info
Prairie Astronomy Club
http://www.prairieastronomyclub.org
|
coutleef
Carpal Tunnel
   
Reged: 02/21/08
Posts: 2125
Loc: Montréal and Saint-Donat, Québ...
|
|
Quote:
Quote:
Ian,
Quote:
I've never used Goto , only the reason my new GEM has it is because I couldn't get the mount without Goto.
Nothing wrong with finding things in the sky the old fashioned way and learning the sky in the process.
Here, here. I second that. None of my scopes have goto or pushto and I do fine, thank you very much. Most anything I can't find would not be worth seeing once you do find it, because it'd be so faint and fuzzy. Though if I ever get a bigger scope - which probably won't be for at least a few more years - I'll probably get one with pushto, i.e., DSCs. But I don't think I would ever get goto. Sorry, but that still seems like a gimmick to me. Just tell me where the object is. I don't need the scope to move itself there! And I don't take pictures. I want to look at the object, not at a picture of the object. 
Clear Skies, Mike
You know, I used to think much as you do. I had a German Equatorial home-brew Newtonian that I could (and still can) find about anything I want to that is within range of the instrument. I had been star-hopping for nearly 30 years with simple un-driven instruments. I could run rings around some of those using Dobs, as I had the "right-angle sweep" star-hopping technique that was extremely reliable and fast. All was well, that is until Cloudynights sent me the NexStar 9.25GPS to review. The more I used it, the more I liked it. Eventually, I just bit the bullet and bought the review instrument, because I discovered that I was starting to like the ability to Go-To objects without having to pour over star charts and squint in a finder to try and find the faint "take-off" star for my right-angle sweep. I liked that fact that the Go-To was allowing me to spend more time on observing the object and less on finding it, making me a more efficient observer. I liked the fact that on nights when the moon made finding take-off stars difficult to impossible, I could still observe things anyway just with the push of a few buttons. It took a while, but eventually, I began to like Go-To a lot more than I thought I ever would. I won't knock anyone who wishes to use whatever technique they like for finding objects. However, I have gained a new appreciation for the convenience and greater efficiency that Go-To has brought me. Clear skies to you.
You sum it up very nicely David.
'Go to' is just a tool not a philosophy. Very useful for those living in skies with LP, for those who prefer to look at the object rather then trying to find it or for those who want to learn the skies.
It is untrue that you do not learn the skies because of 'go to' scopes. Quite the opposite. I often do not use my computer. But when i do not find my target, it becomes very useful. I stop spending frustrating hours on objects that can not be seen from my Light polluted skies. If i cannot find it, the go to can not bring the target into sight, then i go to another object. By experience, the object is there but cannot be seen in my skies with LP.
From a dark site, it is soo easy to star hop. But from my skies in the city, forget it. There are always some target i would have never seen without go to. WHen you have to keep on looking at one spot for 20 minutes before you can see the object, you have to make sure you are at the right place and not spend that 20 minutes on emptiness.
-------------------- François
Scopes: Nexstar 8 SE with Ron's rail and Denk S1 Powerswitch. EPs list is on my Bio.
|
Alen K
newbie
Reged: 11/25/09
Posts: 4
|
|
Quote:
'Go to' is just a tool not a philosophy. Very useful for those living in skies with LP, for those who prefer to look at the object rather then trying to find it or for those who want to learn the skies.
It's also a great aid for astrophotography, especially when you're aiming for objects near the zenith. With my old non-GOTO mount I used to have to kneel down beside the scope and star hop to the vicinity of the usually invisible object with the finder. Then try to compare nearby stars in the camera's viewfinder (those few that are visible) to frame the object properly. Sometimes took a lot of time. Now I just tell the mount to go there and I _know_ the objects in the middle of the field. Usually the only other step necessary is rotation of the camera. MUCH faster.
|
|
2 registered and 7 anonymous users are browsing this forum.
Moderator: spaceydee
Print Thread
|
Forum Permissions
You cannot start new topics
You cannot reply to topics
HTML is disabled
UBBCode is enabled
|
Thread views: 1411
|
|
|
|
|
|
|