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maugi88
Pooh-Bah


Reged: 08/25/13

Loc: SE MN
new lx 850 owner
      #6049208 - 08/27/13 04:20 PM

I am a new 12" lx 850 owner. owned it a month only had two nights of viewing. It came without one of the two counter weights. This being the case I missed the last new moon with low humidity and smooth air. I was a little ticked. Anyway, when I did finally get to use it I too was impressed. My only other reference is a etx 90. So naturally this is a huge improvement. I was a little surprised during polar alignment that the mount cants off to the east about 30deg to make final Polaris alignment.
Book says nothing about that. At first I thought something must be wrong. Just went with it and mount and scope worked fine.
Is a little heavy for setting up myself. Finding it doable though.

Looking forward to next new moon. Although it is hot and humid here now.


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jrcrillyAdministrator
Refractor wienie no more
*****

Reged: 04/30/03

Loc: NE Ohio
Re: new lx 850 owner new [Re: maugi88]
      #6049242 - 08/27/13 04:37 PM

Quote:

I was a little surprised during polar alignment that the mount cants off to the east about 30deg to make final Polaris alignment.
Book says nothing about that.




It will rotate to whatever angle Polaris is from the pole at the time (360 degrees in about 24 hours) so it could be any angle.

Congratulations on the new acquisition! There are a few experienced users here so any questions you pose should find answers.


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maugi88
Pooh-Bah


Reged: 08/25/13

Loc: SE MN
Re: new lx 850 owner new [Re: jrcrilly]
      #6049435 - 08/27/13 06:41 PM

Yah but I already had the scope point right at Polaris with the ota directly above the mount. It surprised me to have it cant the ra axis to the right standing behind it when it was already pointed at Polaris
water under the bridge.

I really like the fact that people actually respond on this site. great forums, happy to have found it.


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nitegeezer
scholastic sledgehammer
*****

Reged: 11/27/07

Re: new lx 850 owner new [Re: maugi88]
      #6049863 - 08/27/13 11:21 PM

Polaris is not the true north point, but it is very close. For normal visual with a manual scope, just pointing to polaris is good enough, but to get added precision for gotos it slews slightly off and changes ra to the correct setting. When this happened to me with my wedge mount I had to scratch my head a bit but after thinking it all made sense.

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Spacetravelerx
Pooh-Bah


Reged: 12/23/12

Loc: New Mexico
Re: new lx 850 owner new [Re: maugi88]
      #6049877 - 08/27/13 11:26 PM

Quote:

I am a new 12" lx 850 owner. owned it a month only had two nights of viewing. It came without one of the two counter weights. This being the case I missed the last new moon with low humidity and smooth air. I was a little ticked. Anyway, when I did finally get to use it I too was impressed. My only other reference is a etx 90. So naturally this is a huge improvement. I was a little surprised during polar alignment that the mount cants off to the east about 30deg to make final Polaris alignment.
Book says nothing about that. At first I thought something must be wrong. Just went with it and mount and scope worked fine.
Is a little heavy for setting up myself. Finding it doable though.

Looking forward to next new moon. Although it is hot and humid here now.




Hello Maugi88 and Welcome to the LX850 club!

You have a great mount and telescope! Between weather and travel I have not been able to put my LX850 to use the last two months (I should be able to access it by mid-September again), but between all of us we should be able to lend some advice and a helping hand, so to speak!

Yes, the LX850 is a bit heavy, however it is great exercise!

And Polaris...what a trouble maker!


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maugi88
Pooh-Bah


Reged: 08/25/13

Loc: SE MN
Re: new lx 850 owner new [Re: Spacetravelerx]
      #6050519 - 08/28/13 11:37 AM

Andrew,
I must admit that I have read some of your posts before I purchased my lx850. I googled lx 850 and there were links to your threads. The descriptions you gave and pictures you posted of M51 or M101, maybe were part of the reason I went ahead with getting it. You should get a commission from meade. Anyway thanks to all.


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galaxy_jason
Vendor


Reged: 05/22/07

Loc: Texas
Re: new lx 850 owner new [Re: maugi88]
      #6050613 - 08/28/13 12:30 PM

That's normal with any computer drive system to rotate from the initial home position to the proper hour angle of polaris. When you then move the mount to center Polaris you are now pointing at the pole.

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Spacetravelerx
Pooh-Bah


Reged: 12/23/12

Loc: New Mexico
Re: new lx 850 owner new [Re: maugi88]
      #6050952 - 08/28/13 03:59 PM

Quote:

Andrew,
I must admit that I have read some of your posts before I purchased my lx850. I googled lx 850 and there were links to your threads. The descriptions you gave and pictures you posted of M51 or M101, maybe were part of the reason I went ahead with getting it. You should get a commission from meade. Anyway thanks to all.




maugi88,

Lol thank-you for the commission suggestion, but I am just plain ol' happy with the LX850! Like I said, it is the real deal.

Yes, the live view of the M51 via the MallinCam X2 from the LX850 was simply breathtaking. My kids and I just stared and stared at the screen. My kids said the view was just like it was out of a text book (their friends were also amazed too and actually were suddenly VERY interested in Astronomy!). And actually when that test picture was taken I accidentally left the StarLock lens cap on - I was so excited with the LX850 I forgot to take it off! So this image was taken on with the mount crudely aligned, no StarLock, no PEC training! (I have remembered to take the cover off now, lol).

The only pain I have is with all my travel and poor weather (Monsoons in New Mexico), I have been unable to use the LX850 since early June, boooo. Fall should remedy all this. I am looking forward to sharing our experiences with the LX850!

Congrats on your new telescope!


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jrcrillyAdministrator
Refractor wienie no more
*****

Reged: 04/30/03

Loc: NE Ohio
Re: new lx 850 owner new [Re: Spacetravelerx]
      #6050968 - 08/28/13 04:11 PM Attachment (28 downloads)

It does a pretty nice job with conventional CCD imaging also.

Larger version: http://www.lx-850.com/wp-content/uploads/2013/08/rgb-5-1200.jpg

Edited by jrcrilly (08/28/13 04:12 PM)


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maugi88
Pooh-Bah


Reged: 08/25/13

Loc: SE MN
Re: new lx 850 owner new [Re: jrcrilly]
      #6051018 - 08/28/13 04:35 PM

Wow, great pic John C. That is just gorgeous. I doubt I will be able to buy a 16 mg camera any time soon. That really looks nice. Is that a planetary neb? I don't recognize it off hand.

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maugi88
Pooh-Bah


Reged: 08/25/13

Loc: SE MN
Re: new lx 850 owner new [Re: maugi88]
      #6051023 - 08/28/13 04:38 PM

Andrew, I am looking forward to it too.

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jrcrillyAdministrator
Refractor wienie no more
*****

Reged: 04/30/03

Loc: NE Ohio
Re: new lx 850 owner new [Re: maugi88]
      #6051218 - 08/28/13 06:23 PM

Quote:

I don't recognize it off hand.




Sorry; that's IC5146, informally referred to as the Cocoon nebula. It was captured with a QSI683 camera binned to 2MB through a 12" LX850.


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maugi88
Pooh-Bah


Reged: 08/25/13

Loc: SE MN
Re: new lx 850 owner new [Re: jrcrilly]
      #6051304 - 08/28/13 07:02 PM

You binned that down to 2mb. I live in a high light polluted area and would have to bin down images to get contrast. It's nice to know what can be achieved.
Do you have formal training or did you just teach yourself. I just started reading "the new ccd astronomy" by ron wodaski. Don't have a ccd yet.


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jrcrillyAdministrator
Refractor wienie no more
*****

Reged: 04/30/03

Loc: NE Ohio
Re: new lx 850 owner new [Re: maugi88]
      #6051350 - 08/28/13 07:27 PM

Quote:

You binned that down to 2mb.




Yes. At these focal lengths it would take a night of very good seeing to benefit from the smaller unbinned pixels. FWHM was around 3 arcseconds that night. There are better recent images on my blog but I hadn't posted that one on CN so I used it here.

"The New Ccd Astronomy" by Ron Wodaski is excellent (I still have my copy). It's fairly old but except for some references to obsolete equipment it has aged very well and the principles it explains haven't changed. Good imaging is a matter of some study and lots of practice.

p.s. I'm in a red zone myself but bin only when seeing makes it appropriate or when I'm in a hurry and want to keep exposures short. On a good night I shoot unbinned luminance.

Edited by jrcrilly (08/28/13 07:34 PM)


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maugi88
Pooh-Bah


Reged: 08/25/13

Loc: SE MN
Re: new lx 850 owner new [Re: jrcrilly]
      #6051398 - 08/28/13 07:53 PM

I checked out your gallery, very nice. I noticed you are using a rc ota. My acf will need some field flattening to get results like yours will it not?

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jrcrillyAdministrator
Refractor wienie no more
*****

Reged: 04/30/03

Loc: NE Ohio
Re: new lx 850 owner new [Re: maugi88]
      #6051436 - 08/28/13 08:15 PM

Quote:

I noticed you are using a rc ota. My acf will need some field flattening to get results like yours will it not?




The last couple of sessions used a borrowed 12" LX850 OTA and no flattener. Neither is truly flat but the curvature seems to be bearable with either across the 8300 chip. I believe that the shallower curves of both secondaries compared to that in a standard SCT provide flatter fields than a conventional SCT. I have old images captured with a 12" F/10 around here somewhere and I intend to compare them at some point. If I have the ACF long enough I'll fiddle with some flatteners I have on hand.


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maugi88
Pooh-Bah


Reged: 08/25/13

Loc: SE MN
Re: new lx 850 owner new [Re: jrcrilly]
      #6051449 - 08/28/13 08:25 PM

I have preordered a meade flattener and focal reducer for the acf, that was supposed to be released with the lx800 but I suppose with all that happened they have not had time to refine it. I doubt I will ever see it. I don't want the one available for the sct because I don't need coma correction.

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Spacetravelerx
Pooh-Bah


Reged: 12/23/12

Loc: New Mexico
Re: new lx 850 owner new [Re: jrcrilly]
      #6051495 - 08/28/13 09:03 PM

Quote:

It does a pretty nice job with conventional CCD imaging also.

Larger version: http://www.lx-850.com/wp-content/uploads/2013/08/rgb-5-1200.jpg




Nice pictures as always!


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maugi88
Pooh-Bah


Reged: 08/25/13

Loc: SE MN
Re: new lx 850 owner new [Re: Spacetravelerx]
      #6052509 - 08/29/13 12:56 PM


spacetravelerx,

Or do you prefer Andrew? Do I remember reading you use sky safari connected to you 14" lx850? I just downloaded it and it seams really cool at first glance.


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Spacetravelerx
Pooh-Bah


Reged: 12/23/12

Loc: New Mexico
Re: new lx 850 owner new [Re: maugi88]
      #6053598 - 08/30/13 12:00 AM

Quote:


spacetravelerx,

Or do you prefer Andrew? Do I remember reading you use sky safari connected to you 14" lx850? I just downloaded it and it seams really cool at first glance.




Andrew is fine! Most folks call me that

Yes, SkySafari is really cool and it plays really nice with the LX850. The key is make sure StarLock is pointing to the same object as your telescope/SkySafari; Even with everything snug, Starlock might be pointing at one spot of the sky while you telescope might be looking 0.2-2 deg off. Also per the manual - "Whenever you change eyepieces, diagonals or cameras, the center field of view may shift slightly. Starlock can compensate for this slight difference". This is an easy fix - "When slewing has been completed, re-center the star in the eyepiece or camera. Then hold the “ENTER” key for 2 seconds. Then press “ENTER” again to confirm your position."

Once done, SkySafari, Starlock and the eyepiece view should be in sync.

BTW, HPP is amazing to watch in action and it nails the target dead on every time. I will record a video of this operation (using my MallinCam) once I get home AND I get clear skies!


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