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Join our unique resource for Olympus Four Thirds E-System DSLR and Pen and OM-D Micro Four Thirds photographers. Show your images via our free e-group photo gallery. Please read the e-group.uk.net forum terms and conditions before posting for the first time. Above all, welcome!


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Foto Fair Post your photos for friendly, non-critical feedback. This is the place to show pictures if you aren't yet ready for full-blooded critique, or simply want to share an interesting picture with other e-group visitors.

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  #241  
Old 1st March 2019
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Re: Communal Night-Sky Photography Thread

Super set up...
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  #242  
Old 2nd March 2019
Jim Ford Jim Ford is offline
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Re: Communal Night-Sky Photography Thread

How about some images of people's setup?

Jim
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  #243  
Old 2nd March 2019
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Re: Communal Night-Sky Photography Thread

Quote:
Originally Posted by birdboy View Post
Dave

The round stars are the product of the Olympus 300mm lens perfect polar alignment using Sharpcap and PHD2 guiding which I am getting sub 2 arc seconds. I keep looking at going your route with new telescope, filters and mount. The one thing that is stopping me is that I have full remote control (USB lead) over the focusing using Olympus Capture. I keep DeepskyStacker Live monitoring the stars FWHM and when I see them drifting I can remotely re-focus without touching the mount. I have my laptop running inside the house connected to the camera and mount via a USB leads so only need to go outside to change the battery.
Sharpcap polar alignment just amazing I use it on my setup, it makes a huge difference.

Remote focusing control is certainly a big benefit of using the Oly, (or any DSLR) to get the same using a scope and CCD needs an electronic focuser (more ) or manual focusing out in the cold.

One benefit of using a GOTO mount and a CCD camera is it enables plate solving to be used. so you can get started actually imaging a lot quicker without having to struggle actually finding the target in the first place. The GOTO mounts by themselves are pretty good but not spot on.

I want to be able to go to remote control it gets bloody cold out there some nights and having your laptop covered in dew is an issue. So I am looking at ways to use a Rasberry pie to do all the local controlling and then access that via WiFi from a warm house.
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  #244  
Old 2nd March 2019
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Re: Communal Night-Sky Photography Thread

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Originally Posted by Jim Ford View Post
How about some images of people's setup?

Jim
here you go Jim





The coiled up cable is CAT6 (20m) used to connect to my laptop indoors, the USB extender has 4 USB 2 ports I am using 3 for each of the cameras. The setup is balanced. There are 3 dew tape heaters being used. I no longer use the polar align scope. I use a compass and then tune using Sharpcap.
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OM-D E-M1, 12-40 f2.8 Pro, Tamron 14-150mm f5.8, E5, E3, Zuiko 50-200mm SWD, Zuiko 12-60mm SWD, Zuiko ED 70-300mm f5.6, 50mmf2, Zuiko ED 9-18mm f5.6, Sigma 50-500mm f6.3, EC14, EC20, RM-1, VA-1
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  #245  
Old 2nd March 2019
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Re: Communal Night-Sky Photography Thread

Quote:
Originally Posted by wornish View Post
Sharpcap polar alignment just amazing I use it on my setup, it makes a huge difference.

Remote focusing control is certainly a big benefit of using the Oly, (or any DSLR) to get the same using a scope and CCD needs an electronic focuser (more ) or manual focusing out in the cold.

One benefit of using a GOTO mount and a CCD camera is it enables plate solving to be used. so you can get started actually imaging a lot quicker without having to struggle actually finding the target in the first place. The GOTO mounts by themselves are pretty good but not spot on.

I want to be able to go to remote control it gets bloody cold out there some nights and having your laptop covered in dew is an issue. So I am looking at ways to use a Rasberry pie to do all the local controlling and then access that via WiFi from a warm house.
Agree Sharpcap is amazing. I would go as far as saying you need remote focusing to do this stuff it is essential. Touching the scope or even cables to get sub 2 arc second precision on portable rigs just cannot work for me.

I have a GPCAMAR0130M on the polar axisand a GPCAMAR0130C on the guide camera aligned with the Olympus imaging camera and lens. I also use plate solve in Sharpcap using the guide camera. I take an image roughly where I think my DSO is then adjust the RA using the dial on the Star Adventurer. I have also fitted a graduated head to the fine tuning head and adjust the dec although this is not necessary after the first time of setting dec.

My only time outside is to set polar align and adjust in RA & Dec for target and of course when the battery needs changing.
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  #246  
Old 2nd March 2019
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Re: Communal Night-Sky Photography Thread

Here is mine indoors. No mount power and control cables or camera USB cables are attached. Cable management is a real challenge. I can replace the ZWO camera and Filter Wheel with my Oly if I want.


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  #247  
Old 2nd March 2019
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Re: Communal Night-Sky Photography Thread


Newtonian scope
by Mark Johnson, on Flickr

Simples!!

The duck in the pond has nothing to do with star gazing!
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  #248  
Old 7th March 2019
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Re: Communal Night-Sky Photography Thread

Star Identification

I want to identify some stars from a stacked photo I made recently. Using Stellarium, I can some of the idents, but cannot manage too far from the obvious stars. I thought I read here on thread about software or a website that will help. I have looked through this thread with no luck...……..



I have inverted the image to save ink when printing. The view is looking south at 11:30pm last night. Stripes are thin cloud....…….
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  #249  
Old 7th March 2019
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Re: Communal Night-Sky Photography Thread

Quote:
Originally Posted by MJ224 View Post
Star Identification

I want to identify some stars from a stacked photo I made recently. Using Stellarium, I can some of the idents, but cannot manage too far from the obvious stars. I thought I read here on thread about software or a website that will help. I have looked through this thread with no luck.....


I have inverted the image to save ink when printing. The view is looking south at 11:30pm last night. Stripes are thin cloud.....

If you upload your image to this site it will plate solve it for you.

http://nova.astrometry.net/upload


When solved there is a link that will take you to the World Wide Web Telescope and show you exactly where it is.
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  #250  
Old 7th March 2019
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Re: Communal Night-Sky Photography Thread

Thank-you Dave......
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  #251  
Old 7th March 2019
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Re: Communal Night-Sky Photography Thread


Orion Nebula
by Mark Johnson, on Flickr


Not in the masterclass, but taken with the 40-150mm at full blast. 15 frames at 15 seconds each. I should have increased the ISO, but forgot..

Also thought I had nailed the focus, but they are still blobby...…….(FFS.)

And what are the black bobs, maybe dust on the sensor??????????? Ain't easy is it...……….
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  #252  
Old 7th March 2019
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Re: Communal Night-Sky Photography Thread

I can't see any black blobs?

You do get dust bunnies, they are little specks of dust that stick to your lens, or even a finger print!

Doing long exposure astro shots its useful to take what are called flats as well as the actual target before you stack in something like Deep Sky Stacker. It's basically a picture of a plain white background with your camera set to Auto. Any dark areas can then be accounted for in the stacked image.

Very nice image though. Who told you astro was easy?
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  #253  
Old 8th March 2019
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Re: Communal Night-Sky Photography Thread



Even simpler setup...……………...

Taken with TG-5 and its flash. Not quite achieved focus in very dark conditions...…………..:-(
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  #254  
Old 10th March 2019
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Re: Communal Night-Sky Photography Thread



Waxing Moon 16.5% tonight...
by Mark Johnson, on Flickr

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  #255  
Old 11th March 2019
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Re: Communal Night-Sky Photography Thread

Mark what is that gizmo between your tripod and your camera? is it some type of tracker?
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