EPL-1 on Telescope

Hi!
Some Pictures of my first tests with my EPL-1 on a 1000mm Telescope.

Since it gets dark very late, I choose the daylight Moon and Planes in their cruise Altitude of 36 000 and 38 000 feet.
Here are the first samples:

Qatar Airways A330-202 A7-ACH at 11278m on the way from London to Doha:





Singapore Airlines B777 at 36 000feet. Wrong ISO so slightly motion blurred.
Stitched from two frames.





And the Moon. Shot in broad daylight. PP: Converted to Greyscale and Contrast+





Linus

Nice pictures.. how do you attached your epl to your telescope?

I have a small 150-750 reflector and I was wondering if m43 could be suitable for taking pictures once I get some motors on my mount..

Thanks

Hi!

vtr said:

Nice pictures.. how do you attached your epl to your telescope?

I have a small 150-750 reflector and I was wondering if m43 could be suitable for taking pictures once I get some motors on my mount..

Click to expand...

I made the mount myself in about 30 minutes from stuff I found in the my parents garage.( I am on vacation at my parents place in Germany right now)

I does not look great (really!) but works perfekt and is very easy to adapt to the 3 cameras I use.
Just be creative ; )

I dont know what the focal length is. The telescope is a 1000mm f/8.

But since the okulars have a multiplication factor and the Camera lens is at 42mm....I have no clou...

Linus

The "academic" way to attach a telescope is to use a so-called M43 -> T2 adapter. It's a threaded mount with specific specs.

On the telescope, you also need a T2 adapter: It's a tube in which you can slide an eyepiece, and one end is the M43 a female T2 threading matching the camera adapter, the other end is the 31.85mm (medium) or 2" (large) cylindric attachment to the focusser.

I have a 480mm/f:6-ish ShortTube 90mm refractor, none of my eyepiece work well.

But direct attachment works well, it still makes a 960mm telephoto lens.

J-P

Linus M said:

vtr said:

Nice pictures.. how do you attached your epl to your telescope?

I have a small 150-750 reflector and I was wondering if m43 could be suitable for taking pictures once I get some motors on my mount..

Click to expand...

I made the mount myself in about 30 minutes from stuff I found in the my parents garage.( I am on vacation at my parents place in Germany right now)

I does not look great (really!) but works perfekt and is very easy to adapt to the 3 cameras I use.
Just be creative ; )

I dont know what the focal length is. The telescope is a 1000mm f/8.

But since the okulars have a multiplication factor and the Camera lens is at 42mm....I have no clou...

Linus

Click to expand...

so you are still using your m43 lens with the telescope or you attached only the body and used the telescope as camera lens?

Thanks for the explanation. I will research about the T2 adapter. I was wondering if it is possible to connect the camera to the telescope, without lens and eyepieces, so the telescope is the lens.. I know that with a traditional DLSR it is possible to make focus, but I didn't find any info regarding m43.

jpds said:

The "academic" way to attach a telescope is to use a so-called M43 -> T2 adapter. It's a threaded mount with specific specs.

On the telescope, you also need a T2 adapter: It's a tube in which you can slide an eyepiece, and one end is the M43 a female T2 threading matching the camera adapter, the other end is the 31.85mm (medium) or 2" (large) cylindric attachment to the focusser.

I have a 480mm/f:6-ish ShortTube 90mm refractor, none of my eyepiece work well.

But direct attachment works well, it still makes a 960mm telephoto lens.

J-P

Click to expand...

vtr said:

Linus M said:

vtr said:

Nice pictures.. how do you attached your epl to your telescope?

I have a small 150-750 reflector and I was wondering if m43 could be suitable for taking pictures once I get some motors on my mount..

Click to expand...

I made the mount myself in about 30 minutes from stuff I found in the my parents garage.( I am on vacation at my parents place in Germany right now)

I does not look great (really!) but works perfekt and is very easy to adapt to the 3 cameras I use.
Just be creative ; )

I dont know what the focal length is. The telescope is a 1000mm f/8.

But since the okulars have a multiplication factor and the Camera lens is at 42mm....I have no clou...

Linus

Click to expand...

so you are still using your m43 lens with the telescope or you attached only the body and used the telescope as camera lens?

Click to expand...

I use the Telescopes own eyepiece (or okular) with my 14-42mm m43 Lens.

Linus

In my case the tube is a little bit short so that I have to add the angle adapter to lengthen a little bit the light path between the front lens and the sensor.

So that having a variable length T2 scope adapter is ideal. Look at vendor's sites like Orion: http://www.telescope.com in the US to find what I mean.
The T2> M43 bodies adapter is common, easily findable "on the bay"

Jean-Pierre

Replying to myself

I realized that with Micro 4/3, we're in a world of shorter "register distance" (simply put thinner bodies) so that my advice for an extensible tube makes no sense, a collapsable one, if it existed, would be best. Standard astrophotography accessories designed for film cameras have an extra 25mm length in average.

I did some tests, and with the "rack and pinion" focuser extended at it's max length, with just the telescope to T2, and T2 to camera adapters, I'm missing about 10mm to get a focused image, on the other hand, using the standard Orion T2 photography adapter, it adds a 70mm extension tube, a not-so-rigid support for the hanging over camera, albeit lighter that classic film SLRs.

Fortunately, there are extension tubes of other sizes: 10, 15, 35mm and the shorter, the better, because most of the needed length is provided by the focuser, and the smaller hangover makes the whole setup less prone to shaking.

The bottom line: There are two options, both need an additional T2 to Micro 4/3 adapter...

• Use a standard astophoto kit: Telescope to T2/70mm M+F tube + replacement shorter T2 M+F tube.
• Compose your own astophoto kit: A telescope to T2 standalone adapter + T2 M+F tube, of less than 70mm.

Finally, because you don't use an eyepiece inserted in the tube, 31.75mm or 50.8mm on the telescope side could be both suitable. The larger can avoid an additional adapter with an even less shaky assembly. Some telescopes are designed for the larger diameter and provide a reducer ring to fit smaller eyepieces.

Hope this helps
Jean-Pierre