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Equipment Discussions >> Mounts

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Stew57
Carpal Tunnel
*****

Reged: 05/03/09

Loc: Silsbee Texas
Re: Celestron StarSense new [Re: brokenwave]
      #6138521 - 10/15/13 08:33 AM

The SSA may be a hot selling item but the reports keep piling up. The teamcelestron.com site is flooded with complaints about the performance of the SSA. I only hope Celestron rights this soon. The satisfied people seem to be beginners that just wanted something that would not align on the wrong star, and land an object in a wide view eyepiece. Those wanting a greater pointing accuracy than could be achieved with a 2+4 carefully done, have been disappointed, especially with the broken ASPA.
Now before someone responds I get x minutes subs with the ASPA, have you tested and measure the real accuracy? Celestron was not ready to release this yet but are working to solve the problems furiously. I don't know why they didn't see this coming though. I just hope they fix it soon.


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Stew57
Carpal Tunnel
*****

Reged: 05/03/09

Loc: Silsbee Texas
Re: Celestron StarSense new [Re: neilson]
      #6138569 - 10/15/13 08:57 AM

Have you updated the firmware? Before a firmware update a calibration point would make that area of the sky more accurate but the rest of the sky less so. The more calibration points I added the worse it became. If you have already updated the firmware try adding just 1 calibration point.

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scopenitout
member


Reged: 08/24/13

Loc: Mt. Belzoni
Re: Celestron StarSense new [Re: Stew57]
      #6138933 - 10/15/13 12:28 PM

That is interesting, Mark. I think you may be right as multiple Cal points did not seem to help my goto accuracy.
The manual says you can add up to 10 and implies it "improves the Goto mount modeling". I have done the 10 and doubt it helped any more than just 1 would have.


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UBobW
member


Reged: 06/27/13

Re: Celestron StarSense new [Re: Stew57]
      #6141608 - 10/16/13 07:17 PM Attachment (100 downloads)

Quote:

The SSA may be a hot selling item but the reports keep piling up. The teamcelestron.com site is flooded with complaints about the performance of the SSA. I only hope Celestron rights this soon. The satisfied people seem to be beginners that just wanted something that would not align on the wrong star, and land an object in a wide view eyepiece. Those wanting a greater pointing accuracy than could be achieved with a 2+4 carefully done, have been disappointed, especially with the broken ASPA.
Now before someone responds I get x minutes subs with the ASPA, have you tested and measure the real accuracy? Celestron was not ready to release this yet but are working to solve the problems furiously. I don't know why they didn't see this coming though. I just hope they fix it soon.




I am one of those beginners :-). I've found that I have similar pointing accuracy on my SSA that I did with the NexStar+ and a 2+4 Alignment, but the SSA takes me a lot less time to do the alignment and I don't have to get out of my chair to do it.

The attached pdf shows some Miloslick captures of some GoTos from my setup after doing the alignment, center cal, power cycle, alignment. Should I be getting better accuracy than this?

Thanks!
Bob


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neilson
professor emeritus


Reged: 08/22/10

Re: Celestron StarSense new [Re: UBobW]
      #6144052 - 10/18/13 12:34 AM

Hi,
I still have not had any success with my SS. I have done a factory reset and had several failed Automatic Alignments including one that locked up on the 3rd alignment point. and I did another camera calibration and my center calibration values are +653 / +374. I had more failed Automatic Alignments then I tried a Manual Alignment with points in the NW, SW, NE, and SE. This is the first time I got a Manual Alignment to pass. But Not one of my goto were in the eyepiece. Almost every one was at the edge of my finderscope. Even the Moon. I double checked my time, date, UTC, and Location. My CGE classic is level and Polar aligned.

Is anyone having any luck using the SS with a CGE Classic.

I did find one good thing. After calibrating the camera, the buttons lock up except for the slew keys so I have been manually slewing back to the home position before I cycle the power and realign. This time after I calibrated the camera, I just cycled the power, then I selected Automatic Alignment, and then Enter to set the switches. The mount automatically slewed all the way back to the Home Position and started the alignment. Nice.

Neilson


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scopenitout
member


Reged: 08/24/13

Loc: Mt. Belzoni
Re: Celestron StarSense new [Re: neilson]
      #6144879 - 10/18/13 01:11 PM

I'm afraid I'm starting to lose patience with the SSA. I have participated in the beta update program, but serious problems persist. To date, I have spent dozens of nights trying to get this thing to work. There seems to be a disturbing variability from one night to the next, as far as basic operation and pointing accuracy is concerned.

Another curious thing is that several users have claimed satisfactory operation and results on the same scopes that others have had nothing but failure. Are there a bunch of units out there that have manufacturing defects, and consequently, can never be properly upgraded?

Luckily, I purchased the SSA from a reputable dealer who will refund my money. I think it's coming down to that.
If Celestron ever gets the SSA fully sorted out, I can always buy another one.


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OneDaveT
sage
*****

Reged: 10/24/11

Loc: IL, USA
Re: Celestron StarSense new [Re: scopenitout]
      #6144967 - 10/18/13 02:07 PM

These forums tend to amplify the negative, since positive views have less incentive to air...so under that pretext.... This customer was doing a double fist pump.

Under a gibbous moon a couple days back, I hit the button and my CGEM DX with C14HD and SSA swung into action and almost exactly three minutes later it's done. The nearly dozen or so objects i told to goto were all within field of view (afov 100 @ 175x) I'm pretty happy.

Some dirty details, I'm running with (all beta) firmware version 1.6.13268 on SSA HC, and 1.6.13246 on camera. I have CFM 1.7.3274 also loaded. First two calibrations, SSA locked while acquiring third image. When that occurred, I just turned off the CGEM, and turned it on again, starting over. Third time no problem. I expect this behavior running beta firmware. Another point to make is that I'm just using this for visual at the moment.


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mamamia
super member
*****

Reged: 10/11/13

Re: Celestron StarSense new [Re: OneDaveT]
      #6146977 - 10/19/13 04:15 PM

WOndering if I should get one or not, after reading this mega thread it seems me that beginners are having some luck with SSA (Which I am).

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hrgreen
member


Reged: 02/02/13

Re: Celestron StarSense new [Re: mamamia]
      #6147325 - 10/19/13 07:28 PM

I had some initial problems with the SSA on my CGEM 925, although it worked until I did the Calibrate Center. Directions in the manual regarding Calibrate Center seem somewhat garbled, and in trying to get thru them, I somehow ended up with camera cal numbers way too high and could not Align at all.

Since re-doing it, my aligns always more or less work, but are sometimes off a degree or so, causing me to have to repeat the Calibrate Center. Now I think this may be caused because I remove and replace the camera every session. It's not my idea of a high quality mount to start with, and I think sometimes I haven't gotten the camera on all the way, so guess I'll start leaving it mounted and see if I get more consistent results.

Hal


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Stew57
Carpal Tunnel
*****

Reged: 05/03/09

Loc: Silsbee Texas
Re: Celestron StarSense new [Re: hrgreen]
      #6147340 - 10/19/13 07:38 PM

I made a bracket to mount the SSA directy to the CGEM. I did a calibrate center then removed the camear and slid it right back on. I did another calibrate center and it is abit different values obtained. This is using the larger mount base. I did the process several times and the values are always just a small amount different. For narrow FOV this could make a difference in performance. I did not try doing several iterations of the calibrate center without camera removal. I will try leaving mounted to the mount and see how consistant the center values stay.

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mamamia
super member
*****

Reged: 10/11/13

Re: Celestron StarSense new [Re: Stew57]
      #6147443 - 10/19/13 09:12 PM

Stew57, I know you were patiently waiting to get your Starsense fixed, is it fixed now? as a total noob, what do you suggest me to do, jump and get one or wait. :-/

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Stew57
Carpal Tunnel
*****

Reged: 05/03/09

Loc: Silsbee Texas
Re: Celestron StarSense new [Re: mamamia]
      #6147571 - 10/19/13 10:44 PM

If I had to do over I would wait until the ASPA is fixed and an official firmware revision is released. With the beta software and my CGEM, everything is working except the ASPA.

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mamamia
super member
*****

Reged: 10/11/13

Re: Celestron StarSense new [Re: Stew57]
      #6147639 - 10/19/13 11:28 PM

Quote:

If I had to do over I would wait until the ASPA is fixed and an official firmware revision is released. With the beta software and my CGEM, everything is working except the ASPA.




thanks, as I see there is little to do with Hardware here, a simple CMOS camera and some ARM derivative running embedded Linux (windriver?) is it incompetency of Celestron SW development can't get this right even after months together fixing this?


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neilson
professor emeritus


Reged: 08/22/10

Re: Celestron StarSense new [Re: mamamia]
      #6147773 - 10/20/13 01:43 AM

Hi,
I tested my SS for several hours. I had failed automatic alignments, some with lock ups on 3rd alignment point. I had some successful automatic and manual alignments but all the goto's were near the edge of the finderscope and add cal. points didn't help much. Sometimes it wouldn't go all the way to the home position when I tried goto home position. But it always went to home position when I set the switches at the beginning. I tried factory resets and calibrate camera with center value of +653 +375. I double checked location and time info. The mount is polar aligned.
My mount is a CGE classic.

Then at the end I tried another Automatic alignment. My goto Adromeda was close to centered, the moon was not in the eyepiece. Vega was close. Lagoon and Swan nebulas in the south were just outside the eyepiece so I added a calibration point since it wasn't very far off like all the other times.
Both were dead center now, Vega and Andromeda were dead center now. And the moon was dead center now. This was the first time I got good results from my SS ever and not only good but great. Goto's were dead center all over the sky.

Now I know for sure my Starsense is capable of dead on goto's in the entire sky, and with an automatic alignment and an added calibration point. Now it's just a matter of getting consistency and getting the bugs out on CGE classic mounts.

Neilson


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mamamia
super member
*****

Reged: 10/11/13

Re: Celestron StarSense new [Re: neilson]
      #6147779 - 10/20/13 01:56 AM

Quote:

Hi,
I tested my SS for several hours. I had failed automatic alignments, some with lock ups on 3rd alignment point. I had some successful automatic and manual alignments but all the goto's were near the edge of the finderscope and add cal. points didn't help much. Sometimes it wouldn't go all the way to the home position when I tried goto home position. But it always went to home position when I set the switches at the beginning. I tried factory resets and calibrate camera with center value of +653 +375. I double checked location and time info. The mount is polar aligned.
My mount is a CGE classic.

Then at the end I tried another Automatic alignment. My goto Adromeda was close to centered, the moon was not in the eyepiece. Vega was close. Lagoon and Swan nebulas in the south were just outside the eyepiece so I added a calibration point since it wasn't very far off like all the other times.
Both were dead center now, Vega and Andromeda were dead center now. And the moon was dead center now. This was the first time I got good results from my SS ever and not only good but great. Goto's were dead center all over the sky.

Now I know for sure my Starsense is capable of dead on goto's in the entire sky, and with an automatic alignment and an added calibration point. Now it's just a matter of getting consistency and getting the bugs out on CGE classic mounts.

Neilson




Happy Birthday Neilson.

You were the once the fence sitter on SS, do you regret getting this?


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neilson
professor emeritus


Reged: 08/22/10

Re: Celestron StarSense new [Re: mamamia]
      #6147825 - 10/20/13 03:37 AM

Hi,Thank You,
No, I do not regret getting my SS but I was starting to get worried until it worked so good the very last time I tried it last night. Now it's just a matter of getting the bugs out for use on the CGE classic mounts as well as on other mounts. I see no reason to return it. The more information we post on Team Celestron from testing, The sooner the Engineers will be able to figure out and fix all the problems.
If you haven't bought one yet you might want to wait a little while longer until they get the rest of the problems fixed.

Neilson


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Stew57
Carpal Tunnel
*****

Reged: 05/03/09

Loc: Silsbee Texas
Re: Celestron StarSense new [Re: neilson]
      #6148108 - 10/20/13 09:59 AM

It seems to me flexure in the system as well as mirror shift is the limiting factor in the accuracy of alignment. Seems the high precision pointing will be key to the success of SSA.

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rmollise
Postmaster
*****

Reged: 07/06/07

Re: Celestron StarSense new [Re: Stew57]
      #6148136 - 10/20/13 10:13 AM

Quote:

It seems to me flexure in the system as well as mirror shift is the limiting factor in the accuracy of alignment. Seems the high precision pointing will be key to the success of SSA.




At the focal length of the SS lens, flexure is just not a big factor.


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neilson
professor emeritus


Reged: 08/22/10

Re: Celestron StarSense new [Re: rmollise]
      #6148198 - 10/20/13 10:54 AM

I was wondering how soon after sunset others are able to get a successful alignment. With my 2+4 I can align as soon as it's dark enough to see Polaris in my finderscope. With my SS it say's too few stars for a half hour after I can see Polaris. Then it can see only less than 50 stars for about another half hour. It was a good hour after I could see Polaris in my finderscope before my SS could see 70 to 100 stars. I know I cant do much imaging until it's that dark but I'm usually doing my ASPA then realignment and sometimes a drift then realignment during that hour. I'm wondering if it's just because the bugs are not all fixed or will I just have to start an hour later when it's darker. I thought I had read some people were getting alignments before it got dark.

Neilson


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Stew57
Carpal Tunnel
*****

Reged: 05/03/09

Loc: Silsbee Texas
Re: Celestron StarSense new [Re: rmollise]
      #6148314 - 10/20/13 12:13 PM

But the precived accuracy when looking through an eyepiece or camera in the main scope would be affected. When measuring the pointing I measure how centered a selected object is the the center of the mallinam chip from the main scope. Differential flexture, mirror shift, and flex in the tripod will all make a difference.

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