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Equipment Discussions >> Mounts

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Astronewb
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Reged: 09/19/11

Loc: Connecticut
75 minute guided exposure iOtpron ZEQ25
      #5847427 - 05/08/13 09:59 AM

Uhuh, 75 minutes, but certainly not on purpose. I was imaging the other night, and I started a session to capture some data of M101. Wanted to take 15, five minute images, but wound up with a 75 minute exposure instead due to an intervalometer failure:


4245secs on M101..oops by Astronewb2011, on Flickr

I was imaging with a AT6RC/CCDT67, so about 1000mm f/l, and guiding with a Lodestar/Borg50mm and PHD. All I did with the RAW image was pull the exposure down 2 stops in View NX so it wouldn't be so bright, then converted it to Jpeg.

The 4245 second accidental exposure shows me three good things.

1. The little 10 pound ZEQ25 'Z-Balanced' mount is a real performer with excellent tracking.

2. The light pollution in my Orange zone is not as bad as I thought it was.

3. The Heat Reduction mod on my Spencer modded D5100 seems to be working.

It also means I lost 75 minutes of perfectly good sky...:(

Clear skies all,

Paul


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Footbag
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5847458 - 05/08/13 10:12 AM

Holy moly! That is some nice performance. Some elongation, but if that mount can handle 10m exposures at that FL it's a performer. Looking at your exposure, I'd bet it could handle around 25m. I'd love to see what that could do with an 8" SCT.

Also, I see you have the Spencer Heat Reduction mod. Can you tell me anything about it? What kind of change in temp are you seeing? What exactly is the mod? There are a lot of people in the DSLR forum that would love to hear about it.


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zjc26138
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Footbag]
      #5847471 - 05/08/13 10:20 AM

That's very impressive. I hope iOptron comes out with a beefier version of the ZEQ. Maybe something that can handle 50-60lbs.

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Astronewb
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Reged: 09/19/11

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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Footbag]
      #5847489 - 05/08/13 10:29 AM

Quote:

Holy moly! That is some nice performance. Some elongation, but if that mount can handle 10m exposures at that FL it's a performer. Looking at your exposure, I'd bet it could handle around 25m. I'd love to see what that could do with an 8" SCT.

Also, I see you have the Spencer Heat Reduction mod. Can you tell me anything about it? What kind of change in temp are you seeing? What exactly is the mod? There are a lot of people in the DSLR forum that would love to hear about it.




Lol...I wondered if I was imaging at about 400mm if the image would have been even 'betterer'...)

Unfortunately, I can't tell you anything about the Spencer Heat reduction mod. I had it done with my Full Spectrum + Ha mod. Couldn't tell you if it's passive, electronic or what? And I also can't provide a 'before and after' image, because I sent him a new in the box D5100 body to mod for me.

I can tell you that I'm very happy with the camera as it is, it's pretty noise free compared to my previous unmodded D3100, and it gathers a heck of lot more Ha.

Best,

Paul


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Astronewb
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: zjc26138]
      #5847509 - 05/08/13 10:39 AM

Quote:

That's very impressive. I hope iOptron comes out with a beefier version of the ZEQ. Maybe something that can handle 50-60lbs.




Yes, I agree, I'm blown away by that 'mistake'.

If I were a company holding the patent on the Z-Balanced design, I'd be tooling up for a 20 pound version with a theoretical payload of 50-60 pounds. And what the heck, I'd put Renishaw encoders on it, just so idiots like me could image for 2 hrs per exposure @ ISO 100............:)

This is what the PHD graph looked like during the session:


zeq25_may6_at6rc by Astronewb2011, on Flickr

That's not an unusual graph, it looks like that almost every session. Guide rate in the mount set to 1.0, and PHD settings almost 'out of the box' except for bumping up the DEC aggression setting.

I converted the PHD log file in PecPrep and it shows a guided PE of under 2 arc-seconds, peak to peak, and an average PE of .8 arc seconds.

Now we wait to see how long it takes for iOptron to tool up...and for the other manufacturers to figure out how to copy the design without infringing on patents...lol.

Regards,

Paul


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psandelle
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5847538 - 05/08/13 10:55 AM

Wow, really nice that it tracks so smoothly. At least you got something out of your mistake - I set up a 90 minute set of subs and tilted the laptop screen down and didn't realize it put it into sleep mode, and came back to have nuthin'!

The second the "45" version comes out (with encoders); I'm on it.

Paul


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corpusse
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Reged: 04/11/10

Loc: Mississauga, Ontario, Canada
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: psandelle]
      #5847598 - 05/08/13 11:39 AM

Wow.

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tjugo
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Reged: 11/06/07

Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: corpusse]
      #5847621 - 05/08/13 11:59 AM

Paul,

Impressive! For subs of +20m your polar alignment must be very very good, I bet that's the reason you have slightly elongated stars.

Cheers,

Jose


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budman1961
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: tjugo]
      #5847646 - 05/08/13 12:11 PM

Wow.......that ZEQ is a real performer!

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Astronewb
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Reged: 09/19/11

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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: tjugo]
      #5847683 - 05/08/13 12:34 PM

Quote:

Paul,

Impressive! For subs of +20m your polar alignment must be very very good, I bet that's the reason you have slightly elongated stars.

Cheers,

Jose




Thanks Jose, I agree, this particular setup was just a polar align using the polar scope, followed by a One Star align to establish a pointing model. No drift align, no fine tuning of the polar offset, nothing else.

Regards,

Paul


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core
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5848991 - 05/08/13 10:52 PM

Paul,

Nicely done! - I've been looking at the ZEQ for a portable low-latitude 'travel' mount. However, imo for a 75min exposure on a dSLR/D5100 it's an awfully low level of photons/signal captured - I am guesstimating f/ratio is around f/6.6; how about iso? I'd have expected sky-fog to be reached well before 75min of exposure, especially from a suburban setting - in my backyard anything over ~5min @iso1600/f/5/broadband is basically a washout.


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Astronewb
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: core]
      #5849099 - 05/08/13 11:39 PM

Peter, the ota was a AT6RC with a CCDT 67 reducer, so about f6@1000mm. ISO was 400, and I'm fortunate enough to live in a orange zone.

Big plus, no moon. The image was a lot brighter, but I dropped the exposure 2 stops in Nikon View NX before I converted it to a jpeg.

The histogram was basically full...:)

Best,

Paul


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cuivienor
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Reged: 10/07/10

Loc: Tokyo, Japan
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5849172 - 05/09/13 01:16 AM Attachment (66 downloads)

Those mounts are really impressive - I'm a convert to iOptron these days.

By the way Paul your image once lightly treated with some "light pollution dark frames" and levels still looks much better than anything I've been able to achieve!

Cheers,

Yannick


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Astronewb
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: cuivienor]
      #5849348 - 05/09/13 07:30 AM

Quote:

Those mounts are really impressive - I'm a convert to iOptron these days.

By the way Paul your image once lightly treated with some "light pollution dark frames" and levels still looks much better than anything I've been able to achieve!




Wow Yannick, I never thought to try to process that sub...you did a nice job on it...:) That 75 minutes of data was supposed to be added to this data:


M101 w/AAT6RC by Astronewb2011, on Flickr

Now I really wish it had been broken up into smaller exposures...:( Oh well.

Thanks for the nice comment, clear skies to you in Japan.

Paul


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AstroWave77
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Reged: 04/19/11

Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5852838 - 05/10/13 10:08 PM

I need some input.
I need a mount for my C8 for visual and imaging.
It's either a HEQ5Pro or the ZEQ25.
I like the portability of the IOptron but am uncertain if it's solid enough for astrophotography.
Any thoughts?


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psandelle
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Reged: 06/18/08

Loc: Los Angeles
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: AstroWave77]
      #5852853 - 05/10/13 10:15 PM

The C8's 12.5 lbs (or, the new ones are, according to Celestron) and the AT6RC is supposedly 12.9 lbs (according to Astronomics). Paul got very, very nice 75 MINUTE! exposes (yeah, field rotation, but that's not the mount's fault, that's Paul's...shame on you Paul!). So, yeah, seems very solid for AP for that scope. Granted, how much other junk you add to it may make your mileage vary.

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Jesus Munoz
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: psandelle]
      #5853064 - 05/11/13 12:09 AM

Amazing PHD graph! It looks like my EM-200 on steady nights.

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orion69
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Jesus Munoz]
      #5853187 - 05/11/13 02:26 AM

Quote:

Amazing PHD graph! It looks like my EM-200 on steady nights.




That's because he's guiding with 50/250 scope, you have to convert that to imaging FL. It doesn't say too much about quality of guiding...


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Astronewb
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: orion69]
      #5853419 - 05/11/13 09:18 AM

Quote:

That's because he's guiding with 50/250 scope, you have to convert that to imaging FL. It doesn't say too much about quality of guiding...




Really....??


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Footbag
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5853427 - 05/11/13 09:27 AM

I think you have to multiply your RMS by your pixel scale. For a true read on on the mounts PE, you would want to run PEMpro. There is also a program I just found called PHDLAb. I never played with it live, but it looks like it has similar features to PEMPro, but works in conjunction with PHD.


Some limited info on RMS and FL here...


Edited by Footbag (05/11/13 09:28 AM)


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orion69
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Reged: 05/09/10

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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5853457 - 05/11/13 09:46 AM

Quote:

Quote:

That's because he's guiding with 50/250 scope, you have to convert that to imaging FL. It doesn't say too much about quality of guiding...




Really....??




Yes.
If you try to guide with OAG you'll notice that PHD graph is not so nice but stars will be tighter...


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AstroWave77
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Reged: 04/19/11

Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5853465 - 05/11/13 09:50 AM

Hi:
Further to my inquiry of yesterday about HEQ5Pro vs ZEQ25 I make the following comment.
IOPTRON offers a choice of a 5Kg. tripod and a 8Kg. one. I think the heavier 8Kg. one is to compensate for the lighter mount when using a larger telescope. If so, then the lighter mount argument becomes irrelevant, doesn't it?
Regards,
AstroWave77


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Astronewb
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: AstroWave77]
      #5853481 - 05/11/13 09:58 AM

Quote:

Yes.
If you try to guide with OAG you'll notice that PHD graph is not so nice but stars will be tighter...




Ah...I agree with you, OAG is much better for accurate tracking/guiding, since the guider and imaging camera are using the same fov.

I don't have a Off Axis Guider, so I have to make do with the little 50mm Borg and Lodestar. But even with that combination, the stars are pretty tight...:) Here's 3 hrs of fine minute exposures, not one sub lost due to trailing, with a 90mm Stellarvue on the ZEQ25:


NGC 7023 the Iris Nebula 3hrs.. by Astronewb2011, on Flickr

If you look at the larger resolution images, you can see the quality of the stars, but excuse my processing...:)

Best,

paul


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Astronewb
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: AstroWave77]
      #5853498 - 05/11/13 10:08 AM

Quote:

Hi:
Further to my inquiry of yesterday about HEQ5Pro vs ZEQ25 I make the following comment.
IOPTRON offers a choice of a 5Kg. tripod and a 8Kg. one. I think the heavier 8Kg. one is to compensate for the lighter mount when using a larger telescope. If so, then the lighter mount argument becomes irrelevant, doesn't it?
Regards,
AstroWave77




Hi, just for reference, I do all my imaging off the 1.5" tripod. The 2" tripod would be overkill, and would definitely detract from the portability of the mount.

But, if you think you need the extra heft of the 2" tripod, then I guess psychologically, it's the best choice.

Regards,

Paul


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psandelle
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5853517 - 05/11/13 10:20 AM

Paul,

I think people are forgetting that (with the polar scope) this is a $850 mount. I have one of the first iEQ30's (more bucks) and if I had to buy a mount right now for what I do, I'd get the ZEQ25 and save money and get equally nice stars. It's an excellent mount from everything you've shown and said, with an excellent polar scope, bells, whistles and still only $850. That's pretty good to me.

I'm waiting for the iEQ45 version of the Z (whatever weight class it ends up being) with the encoders. I've been so happy with my mount and the iOptron customer service, that I'd be willing to give that a try.

If I were going all-out, I'd get an ASA mount...but then I'd also get an observatory. On the Big Island, up near the summit. If one is going to really invest, might as well go whole-hog.

I've toyed with getting a future Mach 1 (the Ferrari of small portable mounts), but I'd like to try the bigger, encoder'd Z. If this ZEQ25 is any indication, should be really great bang-for-the-buck.

Paul


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Raginar
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Footbag]
      #5853558 - 05/11/13 10:55 AM

Astronewb,

He's right about it being a smoother curve with a simpler a guider and that you could really figure out your PE (guided and unguided) using a program like PEMPRO.

No biggie though; the smooth graph does mean that PHD wasn't having any problems with your mount. For instance, before the new firmware, many CGEMs demonstrated a 'sawtooth' pattern in the declination axis. So, you can see that the graph can tell you something.

I think it's pretty amazing myself. Looks like you got a good copy of it!

Chris


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Astronewb
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Raginar]
      #5853969 - 05/11/13 03:00 PM

Quote:

He's right about it being a smoother curve with a simpler a guider and that you could really figure out your PE (guided and unguided) using a program like PEMPRO.




I did convert the guiding graph using the PHD log file in PecPrep, this is the result (not compensated for DEC):


PecPrep 6 May 2013 ZEQ25 by Astronewb2011, on Flickr

Some night when I'm not after a dso, I should turn off PHD guiding and run a 30 minute log file to see what the mount's PE looks like.

CLear skies,

Paul


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Footbag
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5854054 - 05/11/13 04:01 PM

I'm not sure if I'm applying this correctly, but I think we can just take the Borg 50mm and Lodestar pixel scale to get 6.75 arcsec/pixel. Then multiply that by your measured PE of ~2, and we'll get a PE of 13.5.

Hey, smarter people... Did I do that right?

Either way, the mount is a performer at a good price. You don't need to look at a graph to see whether your stars look good. Now someone just has to see how far it can be pushed.

EDIT: BTW Great Iris nebula! My favorite target!

Edited by Footbag (05/11/13 04:43 PM)


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dennilfloss
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Reged: 01/06/13

Loc: Ottawa, Canada
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Footbag]
      #5854377 - 05/11/13 08:44 PM

Impressive tracking. There's probably some software you can use to demotion-blur those stars. or just use Photoshop.

http://www.ehow.com/how_6954394_remove-motion-blur-photoshop.html

Edit: just gave it a quick go with Focus Magic (I forgot this can also do motion deblur). Excuse my bad eyesight.

http://i.imgur.com/lRJQIhw.jpg



Edited by dennilfloss (05/11/13 10:50 PM)


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vdb
sage


Reged: 12/08/09

Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Footbag]
      #5854745 - 05/12/13 02:08 AM

Quote:

I'm not sure if I'm applying this correctly, but I think we can just take the Borg 50mm and Lodestar pixel scale to get 6.75 arcsec/pixel. Then multiply that by your measured PE of ~2, and we'll get a PE of 13.5.

Hey, smarter people... Did I do that right?






Don't think so, this is guided en PecPrep asks pixel size and focal length, so this is the real error and means you have 2 arcsec P-P ...
Side remark, the seeing is in there as well ...


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Astronewb
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Reged: 09/19/11

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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: vdb]
      #5855048 - 05/12/13 09:05 AM

Quote:

Edit: just gave it a quick go with Focus Magic (I forgot this can also do motion deblur). Excuse my bad eyesight.

http://i.imgur.com/lRJQIhw.jpg




Wow...that worked great, and so much easier than using layer masks to do it? With a flat applied to get rid of the reducer vignetting, that would be a great single exposure of M101. Going to look at 'Focus Magic' real quick...lol.

Thanks for showing me that, all the best,

Paul


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Footbag
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: vdb]
      #5855083 - 05/12/13 09:30 AM

Quote:

Quote:

I'm not sure if I'm applying this correctly, but I think we can just take the Borg 50mm and Lodestar pixel scale to get 6.75 arcsec/pixel. Then multiply that by your measured PE of ~2, and we'll get a PE of 13.5.

Hey, smarter people... Did I do that right?






Don't think so, this is guided en PecPrep asks pixel size and focal length, so this is the real error and means you have 2 arcsec P-P ...
Side remark, the seeing is in there as well ...




Oh. If you enter your FL and pixel size then it already calculates that. I was assuming a default of 1arcsec/pixel. But is 2arcsecs peak to peak really possible? That's usually $10k mount territory.

One thing to consider is that you should be aquiring the PEC curve at a very long FL. I seem to remember barlowing my cpc-800 to get my PE.


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Raginar
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Footbag]
      #5855101 - 05/12/13 09:37 AM

Adam,

You're right about the long focal length too. But, you have to take into account the mount. The RC6 that he's using probably is about as close to the max weight of the mount as it can handle realistically anyways. Plus, that's guided. So, 2" PE is what you 'should' get it to (or smaller).

Knez, didn't realize you shouldn't have a normal graph with an OAG. Good to know.


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Footbag
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Raginar]
      #5855136 - 05/12/13 10:11 AM

Quote:

Adam,

You're right about the long focal length too. But, you have to take into account the mount. The RC6 that he's using probably is about as close to the max weight of the mount as it can handle realistically anyways. Plus, that's guided. So, 2" PE is what you 'should' get it to (or smaller).

Knez, didn't realize you shouldn't have a normal graph with an OAG. Good to know.




I didn't take into account that its guided.

As far as fl, I belive the OP used his Borg to record this. Not the RC. The RC would give a better read on PE.


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Astronewb
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Reged: 09/19/11

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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Footbag]
      #5855518 - 05/12/13 01:46 PM

Quote:

I didn't take into account that its guided.

As far as fl, I belive the OP used his Borg to record this. Not the RC. The RC would give a better read on PE.




Yep, I was using a Borg 50mm as a guide scope, focal length of the Borg is 250mm. I entered the Borg's focal length into PecPrep, which is what you're supposed to do. The focal length of the AT6RC w/CCDT67 reducer is approx. 950-1000mm with my current spacing.

I assume that using a OAG, at the focal length of the imaging scope would result in a more approximate PE value?

It's still a pretty good result with a 10# mount on a 1.5" tripod, considering it took all of about 10 minutes from setup to imaging.

Regards,

Paul


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Raginar
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5855786 - 05/12/13 03:40 PM

Paul, I think you're doing pretty good . Makes me want one! I was thinking about getting a GM8 but this might be a good portable alternative.

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Footbag
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Raginar]
      #5856146 - 05/12/13 07:13 PM

All things considered, it seems like a very good mount. When you have great images, and have to critique PE graphs; you're typically paying thousands to split hairs. It's nice to be able to do that with a sub-1k mount.

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dennilfloss
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Reged: 01/06/13

Loc: Ottawa, Canada
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5856279 - 05/12/13 08:34 PM

Quote:

Quote:

Edit: just gave it a quick go with Focus Magic (I forgot this can also do motion deblur). Excuse my bad eyesight.

http://i.imgur.com/lRJQIhw.jpg




Wow...that worked great, and so much easier than using layer masks to do it? With a flat applied to get rid of the reducer vignetting, that would be a great single exposure of M101. Going to look at 'Focus Magic' real quick...lol.

Thanks for showing me that, all the best,

Paul




You can try it for free on 10 images. If you like it enough to buy it, it's $45US.


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psandelle
professor emeritus


Reged: 06/18/08

Loc: Los Angeles
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: dennilfloss]
      #5856359 - 05/12/13 09:14 PM

Hadn't heard of Focus Magic - thanks for the info. Am going to test it in the future and probably buy.

Paul


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FishInPercolator
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Reged: 04/30/13

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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Footbag]
      #5856430 - 05/12/13 10:00 PM

Paul, would you recommend the ZEQ25? What's the total weight with counter and all. I'm considering it for either an 8" newt or 8" EdgeHD.

I was originally considering the iEQ30.

Edited by FishInPercolator (05/12/13 10:03 PM)


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FishInPercolator
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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: FishInPercolator]
      #5856442 - 05/12/13 10:13 PM

In addition, how do you think the ZEQ25 will hold up with a Celestron Advanced VX 8" f/5 Newtonian? It's about 27" long and weighs 14 pounds. My primary concern is the wind...

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Astronewb
scholastic sledgehammer
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Reged: 09/19/11

Loc: Connecticut
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: FishInPercolator]
      #5856596 - 05/12/13 11:37 PM

Quote:

In addition, how do you think the ZEQ25 will hold up with a Celestron Advanced VX 8" f/5 Newtonian? It's about 27" long and weighs 14 pounds. My primary concern is the wind...




The ZEQ25 weighs 33 pounds loaded.

Mount: 10.4
Counterweight: 10.4
C/w shaft: 1.5
Tripod: 11.0

Specs are here: http://www.ioptron.com/index.cfm?select=productdetails&phid=931ce45f-3778...

I've imaged with a payload of 22 pounds, with excellent results. I really believe the working capacity is greater than stated, but if your imaging rig, OTA and guider and camera is around this weight, I can highly recommend it.

The mount is so well balanced, that with a 22 pound payload and 20 pounds of counterweights, you can adjust the latitude adjuster with two fingers easily. Perfect balance.

I've imaged in wind gusts up to 10 mph, the mount just shrugs it off. Typically, in a string of 15 images, I might cull 2 due to elongated stars...and I'm OCD about oblong stars, I check my images at 100-200% magnification and delete before stacking. Of course, that's with a AT6RC, which is not as much of a 'sail' as a Newt...:)

Hope the info helps,

Paul

Edited by Astronewb (05/12/13 11:39 PM)


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dennilfloss
sage


Reged: 01/06/13

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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5856619 - 05/12/13 11:52 PM

Just played a couple of minutes with a Jupiter pic gleaned from the solar system imaging forum to see what Focus Magic could do for planets.

http://i.imgur.com/a8T3xy5.jpg


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Paulimer
super member


Reged: 08/08/03

Loc: Hong Kong
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: dennilfloss]
      #5856682 - 05/13/13 12:41 AM

Paul,
Do you think it would work if I put a 10" F6 newtonian on it for visual only? The scope only weighs 9kg (carbon fibre truss), but its very long...

Paul


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Astronewb
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Reged: 09/19/11

Loc: Connecticut
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Paulimer]
      #5856736 - 05/13/13 01:17 AM

Quote:

Paul,
Do you think it would work if I put a 10" F6 newtonian on it for visual only? The scope only weighs 9kg (carbon fibre truss), but its very long...

Paul




It would probably be okay for visual at that weight, but the momentum of a tube that long might be an issue..?

To wit, I can spin a 4" long pencil between two fingers and control it pretty easily. A 12" long pencil, not so much.

There will be larger versions of this mount available before the end of the year, I'm sure. And I'm pretty sure the next version will be able to handle a 10" or 12" Newt with no problems.

I would wait....

Paul


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Paulimer
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Reged: 08/08/03

Loc: Hong Kong
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5856782 - 05/13/13 02:29 AM

Thanks for the info. My first plan is to put my new Borg 125SD on it for imaging to replace my Tak EM11 (yes i'm serious)

The money I get from the difference may finance me a bigger version of that mount for my newt.


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Astronewb
scholastic sledgehammer
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Reged: 09/19/11

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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Paulimer]
      #5857064 - 05/13/13 09:27 AM

Quote:

Thanks for the info. My first plan is to put my new Borg 125SD on it for imaging to replace my Tak EM11 (yes i'm serious)




I'm pretty jealous, the Borg 125SD is what I'll eventually wind up with to replace my 80 and 90mm refractors, and my 6" Newt. Depending on what reducer you use, you've got all the FOVs covered, with an OTA that only weighs 9 pounds soaking wet.

Congratulations Paul, looking forward to some first light reports when you get that setup sorted out.

Clear skies,

Paul


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rkayakr
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Reged: 10/27/10

Loc: Northeast Ohio
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5857095 - 05/13/13 09:55 AM

dennilfloss
Nice improvement. Have you tried any other deconvolution methods like those in Photoshop "smart sharpen", Maxim DL, Images Plus or Raw Therapee?
Bob


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coinboy1
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Reged: 05/03/11

Loc: Tulsa, OK
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: rkayakr]
      #5857402 - 05/13/13 12:34 PM

I am totally amazed with this mount! For the price point and autoguided exposure lengths. My current mount, the celestron ASGT, I would be lucky to get 5 minute SUBS due to DEC guiding problems. And I also use an AT6RC and cant do narrowband photography because of this. This mount seems like an ideal solution. Any cons to this mount with the AT6RC? Does this mount seem to be an ideal match with this scope? This could be the answer to all my astrophotography problems and its cheap, lightweight, and accurate.

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dennilfloss
sage


Reged: 01/06/13

Loc: Ottawa, Canada
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: rkayakr]
      #5858303 - 05/13/13 06:40 PM

Quote:

dennilfloss
Nice improvement. Have you tried any other deconvolution methods like those in Photoshop "smart sharpen", Maxim DL, Images Plus or Raw Therapee?
Bob




I don't do astroimaging. Never have as I'm strictly visual. I've been scopeless for a few years and plan to get a grab n' go ED refractor this summer to get back into astronomy. As for Photoshop, I don't think my Photoshop 5.5 has an option for smart sharpen. I got Focus magic recently to help restore some old pics for my vintage battleship photographs blog. Just took 2 minutes to see what it could do on the pic in the OP.

Edited by dennilfloss (05/13/13 06:43 PM)


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brokenwave
sage


Reged: 05/10/11

Loc: Scottsdale, AZ
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: dennilfloss]
      #5858405 - 05/13/13 07:21 PM

The last 3 versions of PS have Smart sharpen options.

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Paulimer
super member


Reged: 08/08/03

Loc: Hong Kong
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5858682 - 05/13/13 09:51 PM

Quote:


I'm pretty jealous, the Borg 125SD is what I'll eventually wind up with to replace my 80 and 90mm refractors, and my 6" Newt. Depending on what reducer you use, you've got all the FOVs covered, with an OTA that only weighs 9 pounds soaking wet.





Yes I'm replacing a lot of stuff with that as well. I'm planning to put a borg 7870 triplet reducer on it, which gives it 525mm F4.2.

I already have a TS zero power flattener: at 750mm F6 it gives decent image scale but is still fast enough. The flattener with 68mm screws directly onto the moonlite focuser i got from Hutech. The focuser may add a little bit of weight, but its much better than the original drawtube style focuser I think.


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Astronewb
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Reged: 09/19/11

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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Paulimer]
      #5858749 - 05/13/13 10:25 PM

Quote:

I'm planning to put a borg 7870 triplet reducer on it, which gives it 525mm F4.2




Very nice reducer, I have it along with the flattener and the .85 reducer, all good equipment. Borgs are like Legos, with the right components you can build almost anything..:)

Quote:

Any cons to this mount with the AT6RC?




Not yet, except not enough clear sky. I did replace the upper vixen rail with a ADM Mini Dovetail, and put a Feathertouch Lightweight focuser on it to minimize the weight...shaved about 2-3 pounds off the total package.

You will need an additional counterweight to balance.

Cheers guys,

Paul


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FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5859922 - 05/14/13 01:25 PM

Thank you Paul. I read in another forum that you are a bit hesitant to recommend the ZEQ25 for 8" SCTs... Based on what you said here, has your opinion changed?

I'm just considering the ZEQ25 over the IEQ30 due to cost savings and weight. I'm going to see the Edge HD 800 in person today...


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Astronewb
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Reged: 09/19/11

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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: FishInPercolator]
      #5860306 - 05/14/13 04:18 PM

Quote:

Thank you Paul. I read in another forum that you are a bit hesitant to recommend the ZEQ25 for 8" SCTs... Based on what you said here, has your opinion changed?

I'm just considering the ZEQ25 over the IEQ30 due to cost savings and weight. I'm going to see the Edge HD 800 in person today...




Hi, the current 8" Edge HD appears to weigh 14 pounds? That should come in under 20 pounds with imaging gear, and if so, the mount will handle it.

Some of the older deforked 8" SCTs are very heavy and are too much payload to successfully image with, imo..

As I said, I'm currently at 21-22 lbs with the AT6RC and imaging gear, and it's excellent. The Edge 8" is not overly long either, also a plus.

Clear skies,

Paul


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FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5861221 - 05/14/13 11:24 PM

I saw the youtube clip you put up with that 32 pounder... wow

I'm seriously considering the ZEQ25, just a bit concerned about how it handles period error.

Edited by FishInPercolator (05/14/13 11:25 PM)


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MRNUTTY
Carpal Tunnel
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Reged: 11/22/11

Loc: Mendon, MA
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5861867 - 05/15/13 10:59 AM

Hi Paul! cool stuff :-) Did you trade in your AT10RC for the 6 inch? the 10 was a beast!

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Astronewb
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Reged: 09/19/11

Loc: Connecticut
Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: MRNUTTY]
      #5866407 - 05/17/13 03:50 AM

Quote:

Hi Paul! cool stuff :-) Did you trade in your AT10RC for the 6 inch? the 10 was a beast!




No John, still have the 10", but that's reserved for the iEQ45 and TDM. I am having a ton of fun with the AT6RC though....:)

Best,

Paul


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MRNUTTY
Carpal Tunnel
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Reged: 11/22/11

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Re: 75 minute guided exposure iOtpron ZEQ25 new [Re: Astronewb]
      #5866691 - 05/17/13 09:27 AM

sweet! I didn't see it in your sig, but then looking again I don't see a lot of stuff you have either :-) sig space too small on CN... I knocked a bunch of stuff off to, and severely compressed what's left.

Two mounts is enough for me!

Edited by MRNUTTY (05/17/13 09:33 AM)


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