Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
Get a Cloudy Nights T-Shirt Submit a Review / Article

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 GuÖ uh, User

Equipment Discussions >> Electronically Assisted Astronomy

Pages: 1 | 2 | 3 | 4 | 5 | (show all)
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Panasonic GH3 for near real time AP
      #5571855 - 12/15/12 12:41 AM Attachment (82 downloads)

Here are some sample Astro Photographs I took with the GH3. I was able to capture 15 objects in a single night. All of these images were out of the camera jpgs.

http://www.youtube.com/watch?v=UehRwMBEQR4

http://forums.dpreview.com/forums/thread/3351947

Some of these shots were in camera HDR shots. That mode works extremely well if you select the +-2 stop option and then shoot a 15 second ISO 3200 base image. The camera then will combine that image with a 60 second and a 4 second image to give you an image that compresses the scenes dynamic range by 4 stops.

This works very well on Orion's Nebula. However, I would like to find a way to use the bulb function with HDR so that we could use longer shutter durations. Also it would be nice to be able to do RAW HDR shots. The camera already can do unlimited in camera RAW stacking. However, it can't align those shots like the HDR mode does.

Edited by mpgxsvcd (12/15/12 12:53 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5571858 - 12/15/12 12:42 AM Attachment (107 downloads)

Horse Head

Edited by mpgxsvcd (12/15/12 12:45 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5571865 - 12/15/12 12:46 AM Attachment (105 downloads)

Horse Head in 30 Seconds. Remember this is an unmodified camera with the stock filter in place.

Edited by mpgxsvcd (12/15/12 12:49 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5571871 - 12/15/12 12:50 AM Attachment (92 downloads)

Running Man

Edited by mpgxsvcd (12/15/12 12:50 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5571872 - 12/15/12 12:51 AM Attachment (74 downloads)

The Flame

Edited by mpgxsvcd (12/15/12 12:51 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5571876 - 12/15/12 12:52 AM Attachment (103 downloads)

M31

Edited by mpgxsvcd (12/15/12 12:52 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
Zoomster
Vendor - Clear Sky Adventures
*****

Reged: 01/30/05

Loc: Tampa FL
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5572004 - 12/15/12 04:39 AM

Very nice work, looks like that series by Panasonic is quite capable, I have the G3 lumix and am still experimenting. I will try your settings soon and see what comes up.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Dwight J
scholastic sledgehammer
*****

Reged: 05/14/09

Loc: Lethbridge, Alberta, Canada
Re: Panasonic GH3 for near real time AP new [Re: Zoomster]
      #5573398 - 12/15/12 11:09 PM

Travis: have you tried DeepSkyStacker Live? It may allow you to stack and display the "live" image and continue to stack as more images are downloaded. This would entail using a computer to view the resulting image. I know it can stack Canon Raw files but I am not to sure about Panasonic Raw files. It can do jpeg, tiff, bitmap, etc. Best thing it is free so no cost to see if it can help. As it is, the images you are getting are coming along and are very good.

Post Extras: Print Post   Remind Me!   Notify Moderator  
nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5573587 - 12/16/12 03:36 AM

Excellent series of very clean DSO results Travis from your Panasonic GH3 cam under its own thread I find it very useful to see the cam listed in the thread title and see what other cams, other than the Mallincam, can do.

As this video-like form of imaging is at the extreme edge of cam sensitivity etc info on scope aperture / f/ratio / exposure etc with each image is very useful for guidance - thanks


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: nytecam]
      #5579223 - 12/19/12 04:23 PM Attachment (79 downloads)

I discovered a few more interesting things about the Panasonic GH3. Not only does it do in camera RAW stacking to reduce noise and increase sensitivity. It also has an option to reduce vignetting in camera. You can do the entire stacking process in camera. However, I am mostly to impatient to do any stacking at all so I shoot mostly single exposure or HDR images.

The HDR mode works wonderfully for Orion. Is there anything else that can take the picture below in camera?

If you really want to know about the other semi live view camera options you really should try to see what the GH3 can do.

It is so wonderful to be able to shoot my everyday pictures and videos with high quality lenses and then be able to use the same camera for near real time AP at night. The wireless streaming, playback, and transfer is simply unmatched by any other camera.

It was so nice to be able to go out last night and not pick just one object to concentrate on. It didnít matter what size or how dark it was. I could just point my scope at it and in less than 2 minutes I had a near real time picture that met my expectations.

Also some people downplay the benefits of not needing a PC or the connections that go with it. I hate cable clutter and I really donít want to deal with powering the PC for the 7 hours I was out last night. Much less bringing a table out to sit it on.

If you are truly interested in learning what other options are out there I would be glad to answer any questions about the camera.

This is an out of camera JPG. No editing except to resize to meet CN requirements. It looks exactly like this on the LCD display or on an external monitor.

Edited by mpgxsvcd (12/19/12 04:32 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5579233 - 12/19/12 04:33 PM Attachment (102 downloads)

Here is what it looks like when you don't use the HDR mode.

Edited by mpgxsvcd (12/19/12 04:34 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5579242 - 12/19/12 04:39 PM Attachment (87 downloads)

Horse Head in 2 minutes ISO 6400

Edited by mpgxsvcd (12/19/12 04:39 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5579244 - 12/19/12 04:39 PM Attachment (80 downloads)

M81 and M82

Edited by mpgxsvcd (12/19/12 04:40 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5579246 - 12/19/12 04:40 PM Attachment (66 downloads)

M31 oriented better than before.

Edited by mpgxsvcd (12/19/12 04:40 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5579248 - 12/19/12 04:41 PM Attachment (70 downloads)

M33 with a plane through it. Couldn't they have picked any other space to fly through at that moment?

Edited by mpgxsvcd (12/19/12 04:42 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5579250 - 12/19/12 04:42 PM Attachment (74 downloads)

And our moon

Edited by mpgxsvcd (12/19/12 04:42 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
StarmanDan
Post Laureate
*****

Reged: 08/27/07

Loc: Deep in the heart of Texas
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5579797 - 12/19/12 10:50 PM

Very nice! I may just consider this camera to replace my aging 350D.

Post Extras: Print Post   Remind Me!   Notify Moderator  
mattflastro
Vendor - Astrovideo Systems


Reged: 07/31/09

Loc: Brevard County , FL
Re: Panasonic GH3 for near real time AP new [Re: StarmanDan]
      #5580077 - 12/20/12 04:53 AM

I asked you in your first "hypothetical" thread and got no answer so I'm doing it again here, please tell more about the wireless streaming and all the wondrous wireless capabilities of this camera . I too hate cable clutter but at this point you seem to have a great head start in eliminating it . Do you have some pics of your setup?

Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mattflastro]
      #5580342 - 12/20/12 10:06 AM

Quote:

I asked you in your first "hypothetical" thread and got no answer so I'm doing it again here, please tell more about the wireless streaming and all the wondrous wireless capabilities of this camera . I too hate cable clutter but at this point you seem to have a great head start in eliminating it . Do you have some pics of your setup?




Sorry I didnít see your original request in the other thread. This is how wireless works with my GH3 and Celestron CG-5 mount.

1. The GH3 generates its own wireless network. You can connect to that network from any device with wireless capabilities. However, the only way to control it right now is through either an Android or Apple app.

2. Once you connect to the GH3 you can bring up the app and it will show you exactly what the LCD displays. This isnít precisely real-time. However, it is essentially real-time. I have held the phone up next to the cameraís LCD and the difference in time for the video is less than the time it takes for you to move your eyes from one device to the other. Probably less than 60 Frames of delay(1 second). It is so much better than the GoPro App. That has some serious lag in the display.

3. I can control almost everything about the camera with the phone. I can control Shutter Speed, Aperture(For m4/3s lenses), ISO, White Balance, Lossless 10x Crop mode for Focusing, RAW vs. JPG, Image Resolution, and Color Mode(Including Sharpness, Contrast, Color, and Noise reduction).

4. The only things I canít control are that I canít turn on the fully electronic shutter or the HDR mode directly from the phone. However, I can set it up so that the when I shoot RAW+JPG it does not do HDR and when I switch to JPG only it will automatically switch to the HDR mode. Then I can control that from the phone.

5. I also have the wireless remote($150) for my CG-5 mount. That allows me to completely control my mount from my sonís itouch. It doesnít work with Android yet. However, I need two separate devices to control it so that doesnít really matter.

6. With both of those devices I can align objects, correct the exposure, take pictures, and review those images.

For me the biggest benefit is that I only have 2 cables on my entire setup. One Cable goes from my mount to my battery pack and the other cable goes from my scope to the battery pack for my dew fan. Where I live it is so humid that I have to run the fan year round.

There are a few drawbacks to the current wireless setup. I canít review or see video from the camera on the phone. That is because the camera records at a minimum of 22 mb/sec and that could never be streamed. That isnít a big deal though. Recording video is not useful for Deep space objects.

Also my live view is limited to no more than 2 seconds of shutter duration while viewing on the phone. Now that doesnít mean that I canít record an image with greater than 2 seconds exposure. I can actually go all the way to 60 seconds which is plenty when you can use ISO 6400 or even ISO 12,800 in some situations. It is just that I can go to 8 seconds when I am using the cameraís LCD for live view instead of the phone. They might change this with a firmware or app update though.

Edited by mpgxsvcd (12/20/12 10:08 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mattflastro
Vendor - Astrovideo Systems


Reged: 07/31/09

Loc: Brevard County , FL
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5580861 - 12/20/12 02:59 PM

Travis, thanks for sharing the details of your wireless setup. It sounds great.
There are a few details I didn't understand exactly though .
When you say the camera creates its own network, what does it mean?
Is it connecting via Bluetooth or Wifi (802.11 of some type b/g/n ) ?
Does it need an acces point or is it an ad-hoc connection (peer to peer)?
What form of security if any does this link offer WEP , WPA , WPA2 ?
How do you set up the camera network configuration, is there a cam menu or is it thru a computer connection ?
Did the camera ever refuse to connect to your wireless device or forget the settings ?
Beside the x10 live view crop mode, how do you focus ? Is there any possibility to control a Robofocus type of device , or a temperature compensated focuser from your wireless tablet/phone ?
Are there any limits on the shutter operation , such as max duration of shutter open?
How long does the battery last , and if not all night, can it take a grip with 2 batteries or external power ?
How is the real image noise ? In these reduced images it's impossible to see , please could you post a cropped unprocessed small black area with just the sky black background and a few low magnitude but properly exposed stars ?
Are there any software tools to assist with scope polar alignment , collimation or complete system collimation thru the wireless link ?
Does the camera have in camera image stabilisation , or in lens ? This question is unrelated to any existing application but is something I would need for something of my own.
Oops, my questions list is longer than I thought . If there are Android or iphone apps that answer my above questions that would be a great plus for this camera to have a simple clutterless setup with great potential .


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mattflastro]
      #5580948 - 12/20/12 03:50 PM

Let me first say that this setup is not meant to be a standalone maintenance free setup. For instance if you are thinking about setting it up in an observatory and then remote viewing via the network connection that probably isnít going to work.

What I use it for is simply staying out of the cold. You still need to have access to the scope for the initial polar alignment and to set the initial focus. I guess you could get an automated focus motor but I donít have that.

The steps I have to do manually are listed below. All of my observing can be done remotely after these things are setup. I checked and the wireless works from at least 70 feet away and through several walls.

1. You have to manually polar align the scope. There is no way to affect the polar alignment remotely. Well I guess you could do it if you have a motor on the mount.

2. Focusing must be done manually at the scope. Once my focus is set I use the focus lock on the scope and it doesnít need to be adjusted after that.

3. Collimation cannot be done remotely.

Once I do those things. I can simply go inside where it is warm and where I can watch TV. I can monitor the cameraís live view remotely or review the pictures that it has already taken and move the mount with the iTouch.

The camera itself is limited to 1 hour exposures or less in B mode. However, the app does not support ďBĒ mode yet so exposures are limited to 1 minute or less. You can get a lot in 1 minute or less when ISO 6400/12,800 is useful.

The GH3 simply creates a standard wireless network that any wireless device can connect to. It looks like any other wireless connection when I bring up the available wireless connections on my phone. It supports WEP and maybe the other encryption schemes. I wasnít too concerned with security so I just went with the basic WEP I believe.

The Battery on the GH3 is simply incredible. It lasts twice as long as the one in the GH2. It is MUCH larger though. Also it takes 4 hours to recharge the battery. I have two of them and 1 more on the way.

I was out imaging the other night from 6:15 PM till 2:00 AM the next day. I imagined the entire time and used the LCD. The battery still had at least 50% power when I left. It will go all night without any worries. The big benefit of mirrorless cameras like the GH3 is that they donít have to use power to leave the shutter open. The natural state of the GH3ís shutter is open and it doesnít have a mirror to move of course.

You can buy a battery grip for the GH3 but it is unnecessary. It just adds weight to the camera.

The sensor in the GH3 is reported to be a brand new sensor made by Sony. It is also the same sensor used in the new Olympus OMD camera and quite possibly very similar to the sensors in the Sony NEX line.

The noise at ISO 6400 is very minimal even in long exposures and without using the in camera noise reduction. My GH2 was simply horrible for noise in long exposures. That is why I actually used my very old GF1 camera for AP before the GH3 came out.

Simply put. I think they actually designed the GH3 to do Astro Photography. They included all of the necessary features to do good wireless AP.

I know some of you scoff at the idea that a CMOS based interchangeable lens camera could be better than a purpose built CCD camera. However, technology specifically in software is advancing very rapidly. There is a lot that they can do to overcome the problems of the past.

I will try some stacking the next time we get clear weather to see if this camera is as good or perhaps better than the Cannon offerings. For now, I am completely thrilled with the results I have been getting for near real time work.

My ultimate goal is to do the Messier Marathon in the spring. I want to get every single messier object with a single shot. The challenge is ďCan someone take a single ďgoodĒ exposure for every single Messier object without retaking any of themĒ.

I want to have a single SD card with every Messier image on it in sequence. That way if I am doing outreach with kids and the conditions are not right I can still show them what the objects would look like if the conditions had been better.

Edited by mpgxsvcd (12/20/12 04:12 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5580969 - 12/20/12 04:01 PM Attachment (102 downloads)

Here is a single 60 second exposure from the GH2 with the lens cap on. This is with the in camera noise reduction that makes the exposure twice as long.

Trust me you don't want to see it without the Noise Reduction. It is hard to believe but it is even worse.

Keep in mind that this is a straight 800x600 crop of the original jpg file. No other editing was done and the in camera regular(Non dark frame) noise reduction was dialed down to -2.

Edited by mpgxsvcd (12/20/12 04:12 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5580980 - 12/20/12 04:08 PM Attachment (117 downloads)

Here is the GH3 ISO 3200 60 second exposure with the lens cap on but without the noise reduction that takes twice as long.

Edited by mpgxsvcd (12/20/12 04:08 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5580982 - 12/20/12 04:09 PM Attachment (98 downloads)

And here is the GH3 with the dark frame noise reduction. 60 seconds ISO 3200 with an extra 60 seconds of dark frame noise reduction.

I would call this a vast improvement over the GH2. Wouldn't you? Just getting rid of the pink glow helps a lot.

Edited by mpgxsvcd (12/20/12 04:12 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mattflastro
Vendor - Astrovideo Systems


Reged: 07/31/09

Loc: Brevard County , FL
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5581028 - 12/20/12 04:39 PM

For collimating I should've said software assist , since you are right, there are no motors on scopes . I was thinking of software like Metaguide that improve collimation accuracy greatly. Or like CCDinspector , which allows you to analyse collimation or detect flexure and misalignment in your optical train .
Similarly, for polar alignment I should've said software assist , since there are no motors on mounts for polar align. Software like PoleAlignMax or Pempro .


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mattflastro]
      #5581040 - 12/20/12 04:46 PM

Tommorrow night will be a good test for this setup. It will be below freezing here with winds above 20 mph. However, the humidity will be the lowest it has been all year with very clear skies.

No chance I would sit outside in those conditions all night. However, with the GH3 I might actually be able to image just fine.

I will try to block the wind by putting the scope near the house. That still might not block it enough though. 20+ mph wind is pretty strong. At least I won't freeze to death though. Wind Chill will be miserable for a southern like me.


Post Extras: Print Post   Remind Me!   Notify Moderator  
GlennLeDrew
Postmaster
*****

Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5583040 - 12/21/12 07:06 PM

Travis,
The in-camera noise reduction on the GH3 looks impressive, indeed! At what temperature was this test series performed?

And the single-frame DSO shots are most intriguing, as well. This camera certainly looks like a contender.

Have you identified the source of the significant, diffuse halos surrounding the bright stars?


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: GlennLeDrew]
      #5586475 - 12/23/12 11:57 PM

Quote:

Travis,
The in-camera noise reduction on the GH3 looks impressive, indeed! At what temperature was this test series performed?

And the single-frame DSO shots are most intriguing, as well. This camera certainly looks like a contender.

Have you identified the source of the significant, diffuse halos surrounding the bright stars?




The test shots were at room temperature. I am not certain what caused the halos. It was super humid that night though. I think I had moisture in my scope. Maybe it was some sort of reflection?


Post Extras: Print Post   Remind Me!   Notify Moderator  
mattflastro
Vendor - Astrovideo Systems


Reged: 07/31/09

Loc: Brevard County , FL
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5587520 - 12/24/12 05:00 PM

The very low noise WITHOUT the in camera noise reduction is impressive.
I'm sure cameras like this will eventually become mainstream and replace the aging Canon DSLR's . The image quality and low noise is there already .
There are significant mechanical advantages such as lighter weight, lack of mirror , shorter mount flange to sensor distance reducing backfocus requirements .
One could only hope that software such as BackyardEOS , MaximDL and others will evolve and become compatible with the new cameras and not stuck with Canon forever .


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mattflastro]
      #5589162 - 12/26/12 02:11 AM

With the GH3 there is no need to have software or a computer at all while you are observing. You can completely control all aspects of the camera either through the camera itself or remotely through the app.

BackyardEOS is a great program. However, I would rather get rid of the computer and programs all together than make them work with other cameras.


Post Extras: Print Post   Remind Me!   Notify Moderator  
mattflastro
Vendor - Astrovideo Systems


Reged: 07/31/09

Loc: Brevard County , FL
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5592071 - 12/28/12 01:33 AM

you need a computer for mount control. Nothing on tablets and iphones has the capability of creating a mount pointing model like TPoint . Also if you want to automate your picture taking , plan and schedule , or have a multitude of ASCOM stuff , temp compensated focuser , adaptive optics , etc.

Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: mattflastro]
      #5883179 - 05/24/13 10:05 PM

Very lovely... so far I've learned the GH3, E-PM2, and 60Da are three highly capable SLR cameras. With the exception of 60Da, is it recommended to have them modified for IR?

Post Extras: Print Post   Remind Me!   Notify Moderator  
ScottAz
Fleet Navigator
*****

Reged: 02/06/05

Loc: Kenosha, Wisconsin
Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5885309 - 05/26/13 10:08 AM

I'm really starting to like some of the aspects of the Panasonic GH-3 for quick-session, live viewing with my high-school astronomy students. In camera RAW stacking, HDMI output and in-camera HDR capabilities sounds cool. I especially like the wireless sharing aspect, as all my students seem to have iPads and iPhones and such!

I wonder how it compares to Panasonic's new (forthcoming?) G6? Still researching, but so far I believe that there are some features that GH3 doesn't have but G6 has. For example NFC +better Wi-Fi: the G6 has wireless recording function with start/stop recording and 30fps video stream feed to tablet/smartphone. GH3 can only start recording/no video stream feed.

Anyway ... looks like either one would very much compliment something like a Mallincam Jr. or VSS+ in our observatory for near real time AP and public outreach.


Post Extras: Print Post   Remind Me!   Notify Moderator  
mclewis1
Thread Killer
*****

Reged: 02/25/06

Loc: New Brunswick, Canada
Re: Panasonic GH3 for near real time AP new [Re: ScottAz]
      #5885326 - 05/26/13 10:21 AM

Scott,

It would probably better compliment to the longer exposure VSS+ rather than the Jr. That would make for an interesting combination of capabilities - Small sensor, high sensitivity, long exposures with SD video vs. larger sensor, less sensitivity, and more features with HD video.

It's great to see extended features/functions on these consumer oriented products, it helps drive the price down for other uses in the future (wireless, onboard stacking, etc.).


Post Extras: Print Post   Remind Me!   Notify Moderator  
chasing photons
member


Reged: 03/19/13

Loc: Minnesota
Re: Panasonic GH3 for near real time AP new [Re: ScottAz]
      #5887657 - 05/27/13 06:51 PM

I so very much want to pull the trigger on the G6 as I have been waiting a long time for so many of its new features. The Wi-Fi and NFC implementation for near real time remote observing is fantastic, but the in camera generation of time lapse and stop motion video files just blows me away. Yeah, that's right; I am not a bit interested in any post processing.

Let me do simple, near real time observing at night with a fast telescope and simple, quality stills and video during the day with the same moderately priced camera and I am a happy camper. Then throw in basic wide angle night sky time lapse and the fun I've always wanted to have playing with basic stop motion animation.

But the big question that still remains is how will the G6 compare to the GH3 in low light and low noise performance in long exposures up to 60 seconds? Hopefully, Panasonic has tweaked the image sensor and new Venus engine to approach the excellent performance of the GH3.


Post Extras: Print Post   Remind Me!   Notify Moderator  
ccs_hello
Postmaster
*****

Reged: 07/03/04

Re: Panasonic GH3 for near real time AP new [Re: chasing photons]
      #5887902 - 05/27/13 08:56 PM

Todd,

Per DPR, G6 is using the same sensor as GH2 (Panny made).
We know that GH3, Oly's EM-D M5, E-PL5, and E-PM2 are using newer SONY Exmor IMX109 (baby IMX071) sensor.

Of course, for selection, it's not just the sensor but the total package. Some astro-friendly features are hard to come by.

Clear Skies!

ccs_hello


Post Extras: Print Post   Remind Me!   Notify Moderator  
chasing photons
member


Reged: 03/19/13

Loc: Minnesota
Re: Panasonic GH3 for near real time AP new [Re: ccs_hello]
      #5888098 - 05/27/13 11:23 PM

Although many are already lamenting Panasonic's decision not to use the GH3 sensor in the G6, so far the majority of reviewers of the preproduction G6 are very excited about the performance improvements over the GH2 and G5. I am keeping my fingers crossed that Panasonic has solved the low light noise issues of the GH2 with the G6. If not, I will probably go with the GH3 or hold out for the GH5.

Post Extras: Print Post   Remind Me!   Notify Moderator  
jdbastro
sage


Reged: 08/18/07

Loc: W. Coast
Re: Panasonic GH3 for near real time AP new [Re: ccs_hello]
      #5888236 - 05/28/13 01:03 AM

Quote:

Todd,

Per DPR, G6 is using the same sensor as GH2 (Panny made).
We know that GH3, Oly's EM-D M5, E-PL5, and E-PM2 are using newer SONY Exmor IMX109 (baby IMX071) sensor.

Of course, for selection, it's not just the sensor but the total package. Some astro-friendly features are hard to come by.

Clear Skies!

ccs_hello




I own a Panny GH3. How do you know what sensor is in this camera? Do you have a reference? Sony EXMOR? Wow, that's great if true.


Post Extras: Print Post   Remind Me!   Notify Moderator  
ccs_hello
Postmaster
*****

Reged: 07/03/04

Re: Panasonic GH3 for near real time AP new [Re: chasing photons]
      #5888457 - 05/28/13 07:51 AM

Quote:

...I am keeping my fingers crossed that Panasonic has solved the low light noise issues of the GH2 with the G6. ...



In the realm of CMOS Active Pixel Sensor (APS), the fate is sealed when then sensor was made in the fab.
Its digital output is the resulted raw image. Everything after the APS is post-processing.

Clear Skies!

ccs_hello


Post Extras: Print Post   Remind Me!   Notify Moderator  
ccs_hello
Postmaster
*****

Reged: 07/03/04

Re: Panasonic GH3 for near real time AP new [Re: jdbastro]
      #5888465 - 05/28/13 07:54 AM

See E-PM2 analysis:
http://www.dpreview.com/forums/post/50885809

The rest can be interpreted from Dxomark's sensor comparison thru interpolation.

Clear Skies!

ccs_hello


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: ccs_hello]
      #5888611 - 05/28/13 10:01 AM

Quote:


In the realm of CMOS Active Pixel Sensor (APS), the fate is sealed when then sensor was made in the fab.
Its digital output is the resulted raw image. Everything after the APS is post-processing.

Clear Skies!

ccs_hello




That is a true statement but a pessimistic way of looking at it. Yes anything you do to the RAW file is post processing. However, that doesnít mean that the post processing does not improve the image.

In the past post processing could only be done in a non-real-time fashion. However, with more and more cameras including post processing techniques like Stacking, HDR, and Noise Reduction post processing is becoming a near real time function.


Post Extras: Print Post   Remind Me!   Notify Moderator  
ccs_hello
Postmaster
*****

Reged: 07/03/04

Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5889624 - 05/28/13 07:51 PM

Travis,

May be "fate is sealed" is too strong a statement . I am in the school that best (or g......) in then best (g......) out so naturally I like to see a good sensor to be used in the first place.

I could also say the G6 has an opportunity to excel after GH2 would be a hard sell to me. Both are using the same sensor (still very good one) and I am thinking the image science (post-processing) has not reach a significant advancement that G6 would produce a significant improvement than GH2's. Beside, from marketing "tiers" point of view, it does not make sense for a lower tier to excel than its higher sibling.

Clear Skies!

ccs_hello


Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5893421 - 05/31/13 12:03 AM

Is a GEM necessary for taking these HDR photos? I'm looking at a modded canon t3i and I believe it supports it...

Post Extras: Print Post   Remind Me!   Notify Moderator  
ccs_hello
Postmaster
*****

Reged: 07/03/04

Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5893756 - 05/31/13 08:14 AM

AFAIK, none of the current Canon products support near realtime view for DSO low light viewing.

HDR is taking multiple shots then digitally combine. Some niche cams do it in the camera body (almost immediately)
while most cams don't and need post-processing by a PC (not near realtime though.) If these shots varies too much (e.g., tracking error, field rotation) HDR will look horrible.

Clear Skies!

ccs_hello


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: ccs_hello]
      #5893851 - 05/31/13 09:16 AM

Quote:

AFAIK, none of the current Canon products support near realtime view for DSO low light viewing.

HDR is taking multiple shots then digitally combine. Some niche cams do it in the camera body (almost immediately)
while most cams don't and need post-processing by a PC (not near realtime though.) If these shots varies too much (e.g., tracking error, field rotation) HDR will look horrible.

Clear Skies!

ccs_hello




I finally got a chance to really test the GH3 out last night in a darker location. I will try to post the pictures a little later.

Yes the HDR and internal stacking features require not only good tracking but also guiding for optimal results. If the image is out of alignment at all then the subs wonít match up exactly and it will be apparent. That being said the HDR mode works best at ISO 12,800 and it has a max exposure time of 1 minute and 8 seconds.

Those subs are fairly short and alignment errors donít show up as much with the HDR mode. However, they show up a lot in the internal stacking mode because it is limited to ISO 3200 and below.

I took some interesting in camera stacked shots last night. It worked great for getting a nice clean image in a relatively short amount of time. However, the RAW Stacking definitely required guiding. My guiding was good at first. However, the humidity crept up last night and after a couple of hours my guidescope was all fogged up.

I really need to get a dew heater for the guidescope.


Post Extras: Print Post   Remind Me!   Notify Moderator  
mattflastro
Vendor - Astrovideo Systems


Reged: 07/31/09

Loc: Brevard County , FL
Re: Panasonic GH3 for near real time AP new [Re: ccs_hello]
      #5894039 - 05/31/13 11:02 AM

Quote:

AFAIK, none of the current Canon products support near realtime view for DSO low light viewing.

HDR is taking multiple shots then digitally combine. Some niche cams do it in the camera body (almost immediately)
while most cams don't and need post-processing by a PC (not near realtime though.) If these shots varies too much (e.g., tracking error, field rotation) HDR will look horrible.

Clear Skies!

ccs_hello



You are correct that Canons don't support frame integration out of the box.
However, Canon DSLR's have a long history of being hacked , beginning with the old 300D which got that "Russian hack" that basically turned it into a 10D .

For DSO viewing with FRAME INTEGRATION up to 4 sec there's this free firmware called "Magic Lantern" .

You may find here all the info and download :

http://www.magiclantern.fm/

Hope it helps.


Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5894048 - 05/31/13 11:05 AM

Hmm, and here I was wondering how viable HDR would be for short altaz exposures...

Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5894087 - 05/31/13 11:31 AM

Quote:

Hmm, and here I was wondering how viable HDR would be for short altaz exposures...




The Panasonic HDR mode will do some very minor aligning. However, it really isn't that much. For diffuse objects with lots of dynamic range(Orion's Nebula) it would work. For anything with lots of stars(Clusters) it won't work. You will see the misalignment there.

I still haven't heard what really want out of this. You simply won't be able to have it all in your budget. However, you will be to get a lot if you pick the right equipment.

Here is how I see it.

1. You must have a low focal ratio. F4.0 or below. This will help you no matter what you are doing.

2. You must have some sort of tracking. Whether it requires Alt/Az or GEM depends on where in the sky you are looking.

3. You must find a light weight solution if you are going to carry all of this by hand.

If you satisfy the 3 criteria above I think whatever system you choose will work out in the end. If you can't satisfy those 3 criteria I doubt you will be successful at this in the scenarios that you have described before.

Edited by mpgxsvcd (05/31/13 11:32 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5894094 - 05/31/13 11:35 AM

Yeah Travis, I've decided. The 6SE it is for now and I'll fiddle around with AP to learn how to use whatever camera I'll eventually end up getting and how to get the most out of an altaz mount. Then I'll take a step forward and acquire the ZEQ25 for long exposures.

Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5894159 - 05/31/13 12:11 PM

Quote:

Yeah Travis, I've decided. The 6SE it is for now and I'll fiddle around with AP to learn how to use whatever camera I'll eventually end up getting and how to get the most out of an altaz mount. Then I'll take a step forward and acquire the ZEQ25 for long exposures.




Start researching what focal reducer will work with the C6 and whatever camera you buy. I donít think the Hyperstar will work with a 6 inch scope. I think that you will find that the focal reducer will determine which camera you have to buy. There are not that many cameras that will work well with an aggressive 1.25Ē focal reducer.


Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5894163 - 05/31/13 12:15 PM

How about the Celestron f/6.3, Mallincam MR5 f/3 and f/5, and Matth's f/1.8? There is a hyperstar for the C6 but I don't think people use it often due to the small 6" aperture and large cameras.

Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5894165 - 05/31/13 12:16 PM

Oh, I was looking at a modded t3i so with Matt's firmware suggestion that could potentially be fun to play around with.

Post Extras: Print Post   Remind Me!   Notify Moderator  
mclewis1
Thread Killer
*****

Reged: 02/25/06

Loc: New Brunswick, Canada
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5894177 - 05/31/13 12:22 PM

There is certainly a Hyperstar setup for C6 scopes. You just won't/can't use a DSLR in that configuration. It's limited to smaller diameter cameras (for example video without fans, or canister style CCD imagers).

Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: mclewis1]
      #5894189 - 05/31/13 12:30 PM

Quote:

There is certainly a Hyperstar setup for C6 scopes. You just won't/can't use a DSLR in that configuration. It's limited to smaller diameter cameras (for example video without fans, or canister style CCD imagers).




Will the Mallincam work with a 6" Hyperstar?


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5894194 - 05/31/13 12:31 PM

Quote:

How about the Celestron f/6.3, Mallincam MR5 f/3 and f/5, and Matth's f/1.8? There is a hyperstar for the C6 but I don't think people use it often due to the small 6" aperture and large cameras.




Are those 1.25" reducers or does the C6se have a 2" back?


Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5894217 - 05/31/13 12:41 PM

the C6se is 1.25" so I would figure if these reducers are 2" then I could get an adapter.

Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5894223 - 05/31/13 12:44 PM

Per mallincamusa.com -

"Below is a collage of Lunar images. The scope was a Celestron 6SE and 5mm and 10mm Extension Rings were placed between the cells of the MFR-5 and between the MFR-5 and the MallinCam to achieve different levels of focal reduction."


Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5894246 - 05/31/13 01:01 PM

The Olympus PEN Mini E-PM2 seems to have HDR too. How does it compare with the GH3?

Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5894288 - 05/31/13 01:20 PM

Quote:

the C6se is 1.25" so I would figure if these reducers are 2" then I could get an adapter.




Probably not. Depending on how big the sensor in the camera is. I tried to use 2" SCT reducers with a 4 inch SCT scope and I was not successful.

For your T3i I doubt you will be able to use aggressive focal reduction with a 6 inch scope. The camera is too big for a Hyperstar and the sensor is too big for the 1.25" focal reducers.

Edited by mpgxsvcd (05/31/13 01:24 PM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5894291 - 05/31/13 01:23 PM

Quote:

Per mallincamusa.com -

"Below is a collage of Lunar images. The scope was a Celestron 6SE and 5mm and 10mm Extension Rings were placed between the cells of the MFR-5 and between the MFR-5 and the MallinCam to achieve different levels of focal reduction."




That is right. The Mallincam will work with the 1.25" focal reducers. Your T3i will not if you use aggressive spacing.


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5894295 - 05/31/13 01:25 PM

Quote:

The Olympus PEN Mini E-PM2 seems to have HDR too. How does it compare with the GH3?




I haven't tried the Olympus HDR yet.


Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5894299 - 05/31/13 01:29 PM

So you are saying the t3i will not if I use these? I guess that implies f/6.3 as my limit.

Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: mattflastro]
      #5894327 - 05/31/13 01:40 PM

Travis, use of HDR given that the longest exposure is 60 seconds and these are deep sky objects, could I get by with alt-az or is this something more appropriate for when I eventually get the CEM?

Post Extras: Print Post   Remind Me!   Notify Moderator  
Undermidnight
BEOTS "Tweener Cup" winner
*****

Reged: 05/25/04

Loc: Untermitternacht
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5894335 - 05/31/13 01:44 PM

Quote:

Will the Mallincam work with a 6" Hyperstar?




It appears Starizona sells an adapter for the Mallincams for the 6" Hyperstar. Link.

Jason


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: Undermidnight]
      #5894395 - 05/31/13 02:15 PM

Quote:

Quote:

Will the Mallincam work with a 6" Hyperstar?




It appears Starizona sells an adapter for the Mallincams for the 6" Hyperstar. Link.

Jason




I just saw that as well. That is really cool an F1.9 300mm scope would give you a great field of view and exposure with that Hyperstar.

Honestly, that is probably the only viable option I see for a 6 inch SCT scope and an alt az mount. That scope and camera combination are fast enough to negate the equatorial mount necessity. However, that is still a lot of money to spend.


Post Extras: Print Post   Remind Me!   Notify Moderator  
mclewis1
Thread Killer
*****

Reged: 02/25/06

Loc: New Brunswick, Canada
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5894409 - 05/31/13 02:21 PM

Quote:

Will the Mallincam work with a 6" Hyperstar?



Yeah, Jack H (the US Mallincam distributor) has the setup. It's very interesting, it makes for an amazing type of imaging on those extended Ha objects (North American, Pelican, Veil nebulas for example) and popular stuff like the Lagoon, Swan, Eagle and Triffid are nicely framed with lots of "space" around them. On the other hand most globulars, planetaries, and galaxies are not much fun, they're just too tiny at 300mm (the biggest examples though do work out quite well). With a Hyperstar/C6/Mallincam setup the fov is over 1 degree.

The combination of the sensitivity of the Mallincam and the speed of the Hyperstar is scary. You often reach the sky fog levels in a matter of seconds so it's very tough to use under light polluted skies.


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5894411 - 05/31/13 02:21 PM

Quote:

Travis, use of HDR given that the longest exposure is 60 seconds and these are deep sky objects, could I get by with alt-az or is this something more appropriate for when I eventually get the CEM?




Just depends on the Sky Location, Focal length(If your tracking is not great), and your focal ratio. The HDR mode worked great on my GH3 with my 800mm F4.0 scope without guiding if the object was low. Not so much when it was really high.

Down low is where the really hard core light pollution is. There are always trade offs.

How much are you going to spend on the 6SE and T3i? What is your absolute max for budget?


Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5894463 - 05/31/13 02:53 PM

For a camera I would like to spend less than a grand, and I'm willing to buy factory refurbs if they need to get modified.

Post Extras: Print Post   Remind Me!   Notify Moderator  
jchaller
Pooh-Bah


Reged: 05/29/08

Loc: Tenino, WA.
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5894630 - 05/31/13 04:21 PM Attachment (14 downloads)

Quote:

Quote:

Yeah Travis, I've decided. The 6SE it is for now and I'll fiddle around with AP to learn how to use whatever camera I'll eventually end up getting and how to get the most out of an altaz mount. Then I'll take a step forward and acquire the ZEQ25 for long exposures.




Start researching what focal reducer will work with the C6 and whatever camera you buy. I donít think the Hyperstar will work with a 6 inch scope. I think that you will find that the focal reducer will determine which camera you have to buy. There are not that many cameras that will work well with an aggressive 1.25Ē focal reducer.




I use the following focal reducers in combination on both my CPC1100 and Nexstar 6se using the Samsung camera.

http://agenaastro.com/antares-f-6-3-focal-reducer-schmidt-cassegrain-telescop...

http://agenaastro.com/antares-1-25-0-5x-focal-reducer.html

When used with the diagonal the 6se would not reach focus. I cut down the camera nosepiece and was able to reach focus.

The following is an image captured with that config. on the 6se.


Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: jchaller]
      #5894634 - 05/31/13 04:23 PM

Wait, the 650D has in-camera HDR doesn't it?

Post Extras: Print Post   Remind Me!   Notify Moderator  
Footbag
Postmaster
*****

Reged: 04/13/09

Loc: Scranton, PA
Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5894641 - 05/31/13 04:26 PM

Quote:

Travis, use of HDR given that the longest exposure is 60 seconds and these are deep sky objects, could I get by with alt-az or is this something more appropriate for when I eventually get the CEM?




When I was imaging in alt-az with my CPC-800, I couldn't get over 30s exposures. But I could get a decent image by stacking lots of exposures.

One problem I see with in camera stacking is that it doesn't fix for field rotation. Deep sky stacker will fix for rotation between exposures. Not with a single exposure, though.

Even with a GEM without guiding, you will have similar limitations. Guiding is what gets you long exposures, a GEM just allows you to get there.


Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: Footbag]
      #5894648 - 05/31/13 04:31 PM

Hey Adam,

Yeah I'm aware of it but thanks for pointing it out again. I suppose it could serve to give me an idea of what I'm getting in real time, only to be tweaked and all later in post.


Post Extras: Print Post   Remind Me!   Notify Moderator  
mpgxsvcd
Carpal Tunnel


Reged: 12/21/11

Loc: Raleigh, North Carolina
Re: Panasonic GH3 for near real time AP new [Re: jchaller]
      #5894698 - 05/31/13 05:01 PM

Quote:



I use the following focal reducers in combination on both my CPC1100 and Nexstar 6se using the Samsung camera.

http://agenaastro.com/antares-f-6-3-focal-reducer-schmidt-cassegrain-telescop...

http://agenaastro.com/antares-1-25-0-5x-focal-reducer.html

When used with the diagonal the 6se would not reach focus. I cut down the camera nosepiece and was able to reach focus.

The following is an image captured with that config. on the 6se.




Can you put the standard SCT threaded 6.3 focal reducer on the 6se or does it require a smaller diameter adapter? Sorry it is not clear from the documentation what the thread on the back of the 6SE is unless I am just missing something.

Those stacked focal reducers look great. I am surprised it worked that well but it looks good.


Post Extras: Print Post   Remind Me!   Notify Moderator  
jchaller
Pooh-Bah


Reged: 05/29/08

Loc: Tenino, WA.
Re: Panasonic GH3 for near real time AP new [Re: mpgxsvcd]
      #5894760 - 05/31/13 05:41 PM Attachment (13 downloads)

That focal reducer screws directly to the back of the 6se.
The C11 comes with an adapter for a 1 1/14 visual back.

Pic of the 6se


Post Extras: Print Post   Remind Me!   Notify Moderator  
jchaller
Pooh-Bah


Reged: 05/29/08

Loc: Tenino, WA.
Re: Panasonic GH3 for near real time AP new [Re: jchaller]
      #5894761 - 05/31/13 05:42 PM Attachment (12 downloads)

Pic of the C11

Post Extras: Print Post   Remind Me!   Notify Moderator  
ccs_hello
Postmaster
*****

Reged: 07/03/04

Re: Panasonic GH3 for near real time AP new [Re: jchaller]
      #5894843 - 05/31/13 06:43 PM

On the magic of "Magic Lantern" firmware hack for Canon DSLRs...

1. The firmware hack is available on some Canon DSLR models. Luckily T3i is one of them.

2. I being the unlucky one happen to own few models that M.L. does not support so I cannot validate the fancy features that would benefit astro near-realtime viewing, including HDR with in-camera stacking ( <-- I did not find it as a feature in the main trunk. )

3. It's unofficial thus YMMV.

Clear Skies!

ccs_hello


Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: ccs_hello]
      #5895314 - 06/01/13 12:08 AM

Is it possible to backup or reflash original firmware? Seems kinda cool...

Post Extras: Print Post   Remind Me!   Notify Moderator  
ccs_hello
Postmaster
*****

Reged: 07/03/04

Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5896632 - 06/01/13 07:24 PM

Jason,

M.L. is easily reversible. Just use a different SD memory card while powering up the DSLR.

Look, if M.L. is the magic answer, the solution (the silver bullet) must have been discussed many times in the past, yet there is none.

Clear Skies!

ccs_hello


Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: ccs_hello]
      #5896850 - 06/01/13 09:57 PM

I'll be sure to give it a try if I end up obtaining a t3i. I like the performance of the GH3 however, wow. It's just a bit over my budget. A Mark III would be lovely as well

Post Extras: Print Post   Remind Me!   Notify Moderator  
ccs_hello
Postmaster
*****

Reged: 07/03/04

Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5896888 - 06/01/13 10:25 PM

Jason,

My suggestion and my own observation:
As a new comer, you asked many questions then (seem to) have a tendency to jump into a conclusion based on few selected attributes of your own chosen criteria.
IMHO, it's not a good strategy to go with unless you have unlimited budget and endless tolerance of frustration.

In another word, learn from experienced users. When the real-life knowledge grows, then consider jumping out the norm into uncharted territory. Not the other way around.

Just my 2 cents and not intended to be personal.

Clear Skies!

ccs_hello


Post Extras: Print Post   Remind Me!   Notify Moderator  
FishInPercolator
professor emeritus


Reged: 04/30/13

Loc: NYC
Re: Panasonic GH3 for near real time AP new [Re: FishInPercolator]
      #5896944 - 06/01/13 10:50 PM

If that was a reference to the Mark III, I was kidding.

I'm just learning by reading about other people's experiences.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1 | 2 | 3 | 4 | 5 | (show all)


Extra information
6 registered and 5 anonymous users are browsing this forum.

Moderator:  droid, David Pavlich, JayinUT 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 6181

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics